diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
index 028623aa7aa9c..b0e06731330a1 100644
--- a/src/bootstrap/builder.rs
+++ b/src/bootstrap/builder.rs
@@ -359,7 +359,6 @@ impl<'a> Builder<'a> {
                 test::Tidy,
                 test::Ui,
                 test::CompileFail,
-                test::RunFail,
                 test::RunPassValgrind,
                 test::MirOpt,
                 test::Codegen,
@@ -370,7 +369,6 @@ impl<'a> Builder<'a> {
                 test::UiFullDeps,
                 test::Rustdoc,
                 test::Pretty,
-                test::RunFailPretty,
                 test::RunPassValgrindPretty,
                 test::Crate,
                 test::CrateLibrustc,
diff --git a/src/bootstrap/mk/Makefile.in b/src/bootstrap/mk/Makefile.in
index e0a1f46078d32..d8c97fc741478 100644
--- a/src/bootstrap/mk/Makefile.in
+++ b/src/bootstrap/mk/Makefile.in
@@ -48,7 +48,6 @@ check:
 	$(Q)$(BOOTSTRAP) test $(BOOTSTRAP_ARGS)
 check-aux:
 	$(Q)$(BOOTSTRAP) test \
-		src/test/run-fail/pretty \
 		src/test/run-pass-valgrind/pretty \
 		$(AUX_ARGS) \
 		$(BOOTSTRAP_ARGS)
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index 0cf47d20ead06..ad3fd0d64a307 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -898,8 +898,6 @@ default_test!(CompileFail {
     suite: "compile-fail"
 });
 
-default_test!(RunFail { path: "src/test/run-fail", mode: "run-fail", suite: "run-fail" });
-
 default_test!(RunPassValgrind {
     path: "src/test/run-pass-valgrind",
     mode: "run-pass-valgrind",
@@ -929,13 +927,6 @@ host_test!(UiFullDeps { path: "src/test/ui-fulldeps", mode: "ui", suite: "ui-ful
 host_test!(Rustdoc { path: "src/test/rustdoc", mode: "rustdoc", suite: "rustdoc" });
 
 host_test!(Pretty { path: "src/test/pretty", mode: "pretty", suite: "pretty" });
-test!(RunFailPretty {
-    path: "src/test/run-fail/pretty",
-    mode: "pretty",
-    suite: "run-fail",
-    default: false,
-    host: true
-});
 test!(RunPassValgrindPretty {
     path: "src/test/run-pass-valgrind/pretty",
     mode: "pretty",
diff --git a/src/test/run-fail/bug-811.rs b/src/test/run-fail/bug-811.rs
deleted file mode 100644
index e36ec0f59010b..0000000000000
--- a/src/test/run-fail/bug-811.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-// error-pattern:quux
-
-use std::marker::PhantomData;
-
-fn test00_start(ch: chan_t<isize>, message: isize) {
-    send(ch, message);
-}
-
-type task_id = isize;
-type port_id = isize;
-
-struct chan_t<T> {
-    task: task_id,
-    port: port_id,
-    marker: PhantomData<*mut T>,
-}
-
-fn send<T: Send>(_ch: chan_t<T>, _data: T) {
-    panic!();
-}
-
-fn main() {
-    panic!("quux");
-}
diff --git a/src/test/run-fail/overflowing-lsh-1.rs b/src/test/run-fail/overflowing-lsh-1.rs
deleted file mode 100644
index 977cfea0fe05d..0000000000000
--- a/src/test/run-fail/overflowing-lsh-1.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift left with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = 1_i32 << 32;
-}
diff --git a/src/test/run-fail/overflowing-lsh-2.rs b/src/test/run-fail/overflowing-lsh-2.rs
deleted file mode 100644
index 3517dacde3aa3..0000000000000
--- a/src/test/run-fail/overflowing-lsh-2.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift left with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = 1 << -1;
-}
diff --git a/src/test/run-fail/overflowing-lsh-3.rs b/src/test/run-fail/overflowing-lsh-3.rs
deleted file mode 100644
index 4a575c3fa7f6a..0000000000000
--- a/src/test/run-fail/overflowing-lsh-3.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift left with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = 1_u64 << 64;
-}
diff --git a/src/test/run-fail/overflowing-rsh-1.rs b/src/test/run-fail/overflowing-rsh-1.rs
deleted file mode 100644
index 4592b2b6260bd..0000000000000
--- a/src/test/run-fail/overflowing-rsh-1.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = -1_i32 >> 32;
-}
diff --git a/src/test/run-fail/overflowing-rsh-2.rs b/src/test/run-fail/overflowing-rsh-2.rs
deleted file mode 100644
index 066267b770db2..0000000000000
--- a/src/test/run-fail/overflowing-rsh-2.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = -1_i32 >> -1;
-}
diff --git a/src/test/run-fail/overflowing-rsh-3.rs b/src/test/run-fail/overflowing-rsh-3.rs
deleted file mode 100644
index 67e78482866cb..0000000000000
--- a/src/test/run-fail/overflowing-rsh-3.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _x = -1_i64 >> 64;
-}
diff --git a/src/test/run-fail/overflowing-rsh-5.rs b/src/test/run-fail/overflowing-rsh-5.rs
deleted file mode 100644
index 20ef324a82aeb..0000000000000
--- a/src/test/run-fail/overflowing-rsh-5.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-
-fn main() {
-    let _n = 1i64 >> [64][0];
-}
diff --git a/src/test/run-fail/overflowing-rsh-6.rs b/src/test/run-fail/overflowing-rsh-6.rs
deleted file mode 100644
index 589a98bab0401..0000000000000
--- a/src/test/run-fail/overflowing-rsh-6.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
-// compile-flags: -C debug-assertions
-
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
-#![feature(const_indexing)]
-
-fn main() {
-    let _n = 1i64 >> [64][0];
-}
diff --git a/src/test/run-fail/panic-macro-any.rs b/src/test/run-fail/panic-macro-any.rs
deleted file mode 100644
index 72d42e5b799cd..0000000000000
--- a/src/test/run-fail/panic-macro-any.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-// error-pattern:panicked at 'Box<Any>'
-
-#![feature(box_syntax)]
-
-fn main() {
-    panic!(box 413 as Box<::std::any::Any + Send>);
-}
diff --git a/src/test/run-fail/unwind-unique.rs b/src/test/run-fail/unwind-unique.rs
deleted file mode 100644
index 7b761faad9534..0000000000000
--- a/src/test/run-fail/unwind-unique.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-// error-pattern:fail
-
-fn failfn() {
-    panic!();
-}
-
-fn main() {
-    Box::new(0);
-    failfn();
-}
diff --git a/src/test/run-fail/bounds-check-no-overflow.rs b/src/test/ui/array-slice-vec/bounds-check-no-overflow.rs
similarity index 77%
rename from src/test/run-fail/bounds-check-no-overflow.rs
rename to src/test/ui/array-slice-vec/bounds-check-no-overflow.rs
index 3943f87f7fe0c..3caf5f4499522 100644
--- a/src/test/run-fail/bounds-check-no-overflow.rs
+++ b/src/test/ui/array-slice-vec/bounds-check-no-overflow.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds
+// ignore-emscripten no processes
 
 use std::usize;
 use std::mem::size_of;
diff --git a/src/test/run-fail/dst-raw-slice.rs b/src/test/ui/array-slice-vec/dst-raw-slice.rs
similarity index 81%
rename from src/test/run-fail/dst-raw-slice.rs
rename to src/test/ui/array-slice-vec/dst-raw-slice.rs
index 2575de7cc5833..371d16f093a74 100644
--- a/src/test/run-fail/dst-raw-slice.rs
+++ b/src/test/ui/array-slice-vec/dst-raw-slice.rs
@@ -1,5 +1,9 @@
 // Test bounds checking for DST raw slices
+
+// run-fail
 // error-pattern:index out of bounds
+// ignore-emscripten no processes
+
 #[allow(unconditional_panic)]
 fn main() {
     let a: *const [_] = &[1, 2, 3];
diff --git a/src/test/run-fail/binop-fail-3.rs b/src/test/ui/binop/binop-fail-3.rs
similarity index 74%
rename from src/test/run-fail/binop-fail-3.rs
rename to src/test/ui/binop/binop-fail-3.rs
index a7696fffda0c2..49f635e0c11d6 100644
--- a/src/test/run-fail/binop-fail-3.rs
+++ b/src/test/ui/binop/binop-fail-3.rs
@@ -1,9 +1,11 @@
+// run-fail
 // error-pattern:quux
+// ignore-emscripten no processes
+
 fn foo() -> ! {
     panic!("quux");
 }
 
-#[allow(resolve_trait_on_defaulted_unit)]
 fn main() {
     foo() == foo(); // these types wind up being defaulted to ()
 }
diff --git a/src/test/run-fail/binop-panic.rs b/src/test/ui/binop/binop-panic.rs
similarity index 75%
rename from src/test/run-fail/binop-panic.rs
rename to src/test/ui/binop/binop-panic.rs
index dba5cecc67e11..44cdfffeeb7a7 100644
--- a/src/test/run-fail/binop-panic.rs
+++ b/src/test/ui/binop/binop-panic.rs
@@ -1,8 +1,12 @@
+// run-fail
 // error-pattern:quux
+// ignore-emscripten no processes
+
 fn my_err(s: String) -> ! {
     println!("{}", s);
     panic!("quux");
 }
+
 fn main() {
     3_usize == my_err("bye".to_string());
 }
diff --git a/src/test/run-fail/borrowck-local-borrow.rs b/src/test/ui/borrowck/borrowck-local-borrow.rs
similarity index 77%
rename from src/test/run-fail/borrowck-local-borrow.rs
rename to src/test/ui/borrowck/borrowck-local-borrow.rs
index d07f76b6252dc..ea4589338c46f 100644
--- a/src/test/run-fail/borrowck-local-borrow.rs
+++ b/src/test/ui/borrowck/borrowck-local-borrow.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panic 1
+// ignore-emscripten no processes
 
 // revisions: migrate mir
 //[mir]compile-flags: -Z borrowck=mir
diff --git a/src/test/run-fail/diverging-closure.rs b/src/test/ui/closures/diverging-closure.rs
similarity index 69%
rename from src/test/run-fail/diverging-closure.rs
rename to src/test/ui/closures/diverging-closure.rs
index a92e07a21fe4f..1213a883ef0a3 100644
--- a/src/test/run-fail/diverging-closure.rs
+++ b/src/test/ui/closures/diverging-closure.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:oops
+// ignore-emscripten no processes
 
 fn main() {
     let func = || -> ! {
diff --git a/src/test/run-fail/promoted_div_by_zero.rs b/src/test/ui/consts/promoted_div_by_zero.rs
similarity index 73%
rename from src/test/run-fail/promoted_div_by_zero.rs
rename to src/test/ui/consts/promoted_div_by_zero.rs
index dc6719ce025f2..b4503f691ffd9 100644
--- a/src/test/run-fail/promoted_div_by_zero.rs
+++ b/src/test/ui/consts/promoted_div_by_zero.rs
@@ -1,6 +1,8 @@
 #![allow(unconditional_panic, const_err)]
 
+// run-fail
 // error-pattern: attempt to divide by zero
+// ignore-emscripten no processes
 
 fn main() {
     let x = &(1 / (1 - 1));
diff --git a/src/test/run-fail/expr-fn-panic.rs b/src/test/ui/fn/expr-fn-panic.rs
similarity index 65%
rename from src/test/run-fail/expr-fn-panic.rs
rename to src/test/ui/fn/expr-fn-panic.rs
index 0532c32ec7028..123b57f97a4ec 100644
--- a/src/test/run-fail/expr-fn-panic.rs
+++ b/src/test/ui/fn/expr-fn-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn f() -> ! {
     panic!()
diff --git a/src/test/run-fail/generator-resume-after-panic.rs b/src/test/ui/generator/generator-resume-after-panic.rs
similarity index 90%
rename from src/test/run-fail/generator-resume-after-panic.rs
rename to src/test/ui/generator/generator-resume-after-panic.rs
index 1a7c2e8062901..55704f40e9f2b 100644
--- a/src/test/run-fail/generator-resume-after-panic.rs
+++ b/src/test/ui/generator/generator-resume-after-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:generator resumed after panicking
+// ignore-emscripten no processes
 
 // Test that we get the correct message for resuming a panicked generator.
 
diff --git a/src/test/run-fail/hashmap-capacity-overflow.rs b/src/test/ui/hashmap/hashmap-capacity-overflow.rs
similarity index 86%
rename from src/test/run-fail/hashmap-capacity-overflow.rs
rename to src/test/ui/hashmap/hashmap-capacity-overflow.rs
index 038f2756ff322..5f88683f4adfc 100644
--- a/src/test/run-fail/hashmap-capacity-overflow.rs
+++ b/src/test/ui/hashmap/hashmap-capacity-overflow.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:capacity overflow
+// ignore-emscripten no processes
 
 use std::collections::hash_map::HashMap;
 use std::usize;
diff --git a/src/test/ui/hashmap-iter-value-lifetime.nll.stderr b/src/test/ui/hashmap/hashmap-iter-value-lifetime.nll.stderr
similarity index 100%
rename from src/test/ui/hashmap-iter-value-lifetime.nll.stderr
rename to src/test/ui/hashmap/hashmap-iter-value-lifetime.nll.stderr
diff --git a/src/test/ui/hashmap-iter-value-lifetime.rs b/src/test/ui/hashmap/hashmap-iter-value-lifetime.rs
similarity index 100%
rename from src/test/ui/hashmap-iter-value-lifetime.rs
rename to src/test/ui/hashmap/hashmap-iter-value-lifetime.rs
diff --git a/src/test/ui/hashmap-iter-value-lifetime.stderr b/src/test/ui/hashmap/hashmap-iter-value-lifetime.stderr
similarity index 100%
rename from src/test/ui/hashmap-iter-value-lifetime.stderr
rename to src/test/ui/hashmap/hashmap-iter-value-lifetime.stderr
diff --git a/src/test/ui/hashmap-lifetimes.nll.stderr b/src/test/ui/hashmap/hashmap-lifetimes.nll.stderr
similarity index 100%
rename from src/test/ui/hashmap-lifetimes.nll.stderr
rename to src/test/ui/hashmap/hashmap-lifetimes.nll.stderr
diff --git a/src/test/ui/hashmap-lifetimes.rs b/src/test/ui/hashmap/hashmap-lifetimes.rs
similarity index 100%
rename from src/test/ui/hashmap-lifetimes.rs
rename to src/test/ui/hashmap/hashmap-lifetimes.rs
diff --git a/src/test/ui/hashmap-lifetimes.stderr b/src/test/ui/hashmap/hashmap-lifetimes.stderr
similarity index 100%
rename from src/test/ui/hashmap-lifetimes.stderr
rename to src/test/ui/hashmap/hashmap-lifetimes.stderr
diff --git a/src/test/ui/hashmap-memory.rs b/src/test/ui/hashmap/hashmap-memory.rs
similarity index 100%
rename from src/test/ui/hashmap-memory.rs
rename to src/test/ui/hashmap/hashmap-memory.rs
diff --git a/src/test/run-fail/expr-if-panic-fn.rs b/src/test/ui/if/expr-if-panic-fn.rs
similarity index 80%
rename from src/test/run-fail/expr-if-panic-fn.rs
rename to src/test/ui/if/expr-if-panic-fn.rs
index 660b1396e38a9..36e49785a49d0 100644
--- a/src/test/run-fail/expr-if-panic-fn.rs
+++ b/src/test/ui/if/expr-if-panic-fn.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn f() -> ! {
     panic!()
diff --git a/src/test/run-fail/expr-if-panic.rs b/src/test/ui/if/expr-if-panic.rs
similarity index 76%
rename from src/test/run-fail/expr-if-panic.rs
rename to src/test/ui/if/expr-if-panic.rs
index 36aaf459a56ee..520ee0870ee15 100644
--- a/src/test/run-fail/expr-if-panic.rs
+++ b/src/test/ui/if/expr-if-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn main() {
     let _x = if false {
diff --git a/src/test/run-fail/if-check-panic.rs b/src/test/ui/if/if-check-panic.rs
similarity index 87%
rename from src/test/run-fail/if-check-panic.rs
rename to src/test/ui/if/if-check-panic.rs
index f9a4b8fcb38a5..037cd427ccf36 100644
--- a/src/test/run-fail/if-check-panic.rs
+++ b/src/test/ui/if/if-check-panic.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:Number is odd
+// ignore-emscripten no processes
+
 fn even(x: usize) -> bool {
     if x < 2 {
         return false;
diff --git a/src/test/run-fail/if-cond-bot.rs b/src/test/ui/if/if-cond-bot.rs
similarity index 75%
rename from src/test/run-fail/if-cond-bot.rs
rename to src/test/ui/if/if-cond-bot.rs
index c680cad258f24..bcd114678528c 100644
--- a/src/test/run-fail/if-cond-bot.rs
+++ b/src/test/ui/if/if-cond-bot.rs
@@ -1,8 +1,12 @@
+// run-fail
 // error-pattern:quux
+// ignore-emscripten no processes
+
 fn my_err(s: String) -> ! {
     println!("{}", s);
     panic!("quux");
 }
+
 fn main() {
     if my_err("bye".to_string()) {
     }
diff --git a/src/test/run-fail/glob-use-std.rs b/src/test/ui/imports/glob-use-std.rs
similarity index 68%
rename from src/test/run-fail/glob-use-std.rs
rename to src/test/ui/imports/glob-use-std.rs
index d19a782986b16..ef06cc570d557 100644
--- a/src/test/run-fail/glob-use-std.rs
+++ b/src/test/ui/imports/glob-use-std.rs
@@ -1,6 +1,8 @@
 // Issue #7580
 
+// run-fail
 // error-pattern:panic works
+// ignore-emscripten no processes
 
 use std::*;
 
diff --git a/src/test/run-fail/issue-12920.rs b/src/test/ui/issues/issue-12920.rs
similarity index 65%
rename from src/test/run-fail/issue-12920.rs
rename to src/test/ui/issues/issue-12920.rs
index 0819e992d1378..a0cfea055be2b 100644
--- a/src/test/run-fail/issue-12920.rs
+++ b/src/test/ui/issues/issue-12920.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 pub fn main() {
     panic!();
diff --git a/src/test/run-fail/issue-13202.rs b/src/test/ui/issues/issue-13202.rs
similarity index 68%
rename from src/test/run-fail/issue-13202.rs
rename to src/test/ui/issues/issue-13202.rs
index cf3a6b3d986f5..16debb5b6c4a6 100644
--- a/src/test/run-fail/issue-13202.rs
+++ b/src/test/ui/issues/issue-13202.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:bad input
+// ignore-emscripten no processes
 
 fn main() {
     Some("foo").unwrap_or(panic!("bad input")).to_string();
diff --git a/src/test/run-fail/issue-18576.rs b/src/test/ui/issues/issue-18576.rs
similarity index 85%
rename from src/test/run-fail/issue-18576.rs
rename to src/test/ui/issues/issue-18576.rs
index ca9d1e5f5e7de..389cf108b05ee 100644
--- a/src/test/run-fail/issue-18576.rs
+++ b/src/test/ui/issues/issue-18576.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:stop
+// ignore-emscripten no processes
 
 // #18576
 // Make sure that calling an extern function pointer in an unreachable
@@ -10,4 +12,5 @@ fn main() {
     let pointer = other;
     pointer();
 }
+
 extern "C" fn other() {}
diff --git a/src/test/run-fail/issue-20971.rs b/src/test/ui/issues/issue-20971.rs
similarity index 72%
rename from src/test/run-fail/issue-20971.rs
rename to src/test/ui/issues/issue-20971.rs
index 6c2de783c0166..2e10418178c42 100644
--- a/src/test/run-fail/issue-20971.rs
+++ b/src/test/ui/issues/issue-20971.rs
@@ -1,6 +1,8 @@
 // Regression test for Issue #20971.
 
+// run-fail
 // error-pattern:Hello, world!
+// ignore-emscripten no processes
 
 pub trait Parser {
     type Input;
@@ -12,7 +14,7 @@ impl Parser for () {
     fn parse(&mut self, input: ()) {}
 }
 
-pub fn many() -> Box<Parser<Input = <() as Parser>::Input> + 'static> {
+pub fn many() -> Box<dyn Parser<Input = <() as Parser>::Input> + 'static> {
     panic!("Hello, world!")
 }
 
diff --git a/src/test/run-fail/issue-23354-2.rs b/src/test/ui/issues/issue-23354-2.rs
similarity index 80%
rename from src/test/run-fail/issue-23354-2.rs
rename to src/test/ui/issues/issue-23354-2.rs
index 8f7baff56dc55..c291d8a5eaf3d 100644
--- a/src/test/run-fail/issue-23354-2.rs
+++ b/src/test/ui/issues/issue-23354-2.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panic evaluated
+// ignore-emscripten no processes
 
 #[allow(unused_variables)]
 fn main() {
diff --git a/src/test/run-fail/issue-23354.rs b/src/test/ui/issues/issue-23354.rs
similarity index 72%
rename from src/test/run-fail/issue-23354.rs
rename to src/test/ui/issues/issue-23354.rs
index 4c2fb022a6bf6..8b7c2eef2fc1b 100644
--- a/src/test/run-fail/issue-23354.rs
+++ b/src/test/ui/issues/issue-23354.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panic evaluated
+// ignore-emscripten no processes
 
 #[allow(unused_variables)]
 fn main() {
diff --git a/src/test/run-fail/issue-2444.rs b/src/test/ui/issues/issue-2444.rs
similarity index 51%
rename from src/test/run-fail/issue-2444.rs
rename to src/test/ui/issues/issue-2444.rs
index 17f89e4d20d3e..ac0d0506a342d 100644
--- a/src/test/run-fail/issue-2444.rs
+++ b/src/test/ui/issues/issue-2444.rs
@@ -1,12 +1,14 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 use std::sync::Arc;
 
-enum e<T> {
-    ee(Arc<T>),
+enum Err<T> {
+    Errr(Arc<T>),
 }
 
-fn foo() -> e<isize> {
+fn foo() -> Err<isize> {
     panic!();
 }
 
diff --git a/src/test/run-fail/bug-2470-bounds-check-overflow.rs b/src/test/ui/issues/issue-2470-bounds-check-overflow.rs
similarity index 94%
rename from src/test/run-fail/bug-2470-bounds-check-overflow.rs
rename to src/test/ui/issues/issue-2470-bounds-check-overflow.rs
index b4e3f24699118..f0e8e185e5633 100644
--- a/src/test/run-fail/bug-2470-bounds-check-overflow.rs
+++ b/src/test/ui/issues/issue-2470-bounds-check-overflow.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds
+// ignore-emscripten no processes
 
 use std::mem;
 
diff --git a/src/test/run-fail/issue-2761.rs b/src/test/ui/issues/issue-2761.rs
similarity index 64%
rename from src/test/run-fail/issue-2761.rs
rename to src/test/ui/issues/issue-2761.rs
index 84d90930d2d23..3ba098abbe65a 100644
--- a/src/test/run-fail/issue-2761.rs
+++ b/src/test/ui/issues/issue-2761.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:custom message
+// ignore-emscripten no processes
 
 fn main() {
     assert!(false, "custom message");
diff --git a/src/test/run-fail/issue-28934.rs b/src/test/ui/issues/issue-28934.rs
similarity index 92%
rename from src/test/run-fail/issue-28934.rs
rename to src/test/ui/issues/issue-28934.rs
index 5915372b6920f..1e48878f632e5 100644
--- a/src/test/run-fail/issue-28934.rs
+++ b/src/test/ui/issues/issue-28934.rs
@@ -1,7 +1,9 @@
 // Regression test: issue had to do with "givens" in region inference,
 // which were not being considered during the contraction phase.
 
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 struct Parser<'i: 't, 't>(&'i u8, &'t u8);
 
diff --git a/src/test/run-fail/issue-29798.rs b/src/test/ui/issues/issue-29798.rs
similarity index 77%
rename from src/test/run-fail/issue-29798.rs
rename to src/test/ui/issues/issue-29798.rs
index b06aa5fc728d9..5eff5d1915bad 100644
--- a/src/test/run-fail/issue-29798.rs
+++ b/src/test/ui/issues/issue-29798.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 5 but the index is 5
+// ignore-emscripten no processes
 
 const fn test(x: usize) -> i32 {
     [42;5][x]
diff --git a/src/test/run-fail/issue-3029.rs b/src/test/ui/issues/issue-3029.rs
similarity index 83%
rename from src/test/run-fail/issue-3029.rs
rename to src/test/ui/issues/issue-3029.rs
index face808b68ff3..a5d30960a4cdb 100644
--- a/src/test/run-fail/issue-3029.rs
+++ b/src/test/ui/issues/issue-3029.rs
@@ -1,9 +1,11 @@
+// run-fail
+// error-pattern:so long
+// ignore-emscripten no processes
+
 #![allow(unused_allocation)]
 #![allow(unreachable_code)]
 #![allow(unused_variables)]
 
-
-// error-pattern:so long
 fn main() {
     let mut x = Vec::new();
     let y = vec![3];
diff --git a/src/test/run-fail/issue-30380.rs b/src/test/ui/issues/issue-30380.rs
similarity index 94%
rename from src/test/run-fail/issue-30380.rs
rename to src/test/ui/issues/issue-30380.rs
index 036071a89c7a4..48b329c5de148 100644
--- a/src/test/run-fail/issue-30380.rs
+++ b/src/test/ui/issues/issue-30380.rs
@@ -1,7 +1,9 @@
 // check that panics in destructors during assignment do not leave
 // destroyed values lying around for other destructors to observe.
 
+// run-fail
 // error-pattern:panicking destructors ftw!
+// ignore-emscripten no processes
 
 struct Observer<'a>(&'a mut FilledOnDrop);
 
diff --git a/src/test/run-fail/issue-44216-add-instant.rs b/src/test/ui/issues/issue-44216-add-instant.rs
similarity index 78%
rename from src/test/run-fail/issue-44216-add-instant.rs
rename to src/test/ui/issues/issue-44216-add-instant.rs
index 76ad0a3d41bf8..c2f3598f645bb 100644
--- a/src/test/run-fail/issue-44216-add-instant.rs
+++ b/src/test/ui/issues/issue-44216-add-instant.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:overflow
+// ignore-emscripten no processes
 
 use std::time::{Instant, Duration};
 
diff --git a/src/test/run-fail/issue-44216-add-system-time.rs b/src/test/ui/issues/issue-44216-add-system-time.rs
similarity index 78%
rename from src/test/run-fail/issue-44216-add-system-time.rs
rename to src/test/ui/issues/issue-44216-add-system-time.rs
index aa861f7d5993e..9a88cb7c18916 100644
--- a/src/test/run-fail/issue-44216-add-system-time.rs
+++ b/src/test/ui/issues/issue-44216-add-system-time.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:overflow
+// ignore-emscripten no processes
 
 use std::time::{Duration, SystemTime};
 
diff --git a/src/test/run-fail/issue-44216-sub-instant.rs b/src/test/ui/issues/issue-44216-sub-instant.rs
similarity index 78%
rename from src/test/run-fail/issue-44216-sub-instant.rs
rename to src/test/ui/issues/issue-44216-sub-instant.rs
index 8bc1f47ae2d96..2decd88bbc06b 100644
--- a/src/test/run-fail/issue-44216-sub-instant.rs
+++ b/src/test/ui/issues/issue-44216-sub-instant.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:overflow
+// ignore-emscripten no processes
 
 use std::time::{Instant, Duration};
 
diff --git a/src/test/run-fail/issue-44216-sub-system-time.rs b/src/test/ui/issues/issue-44216-sub-system-time.rs
similarity index 78%
rename from src/test/run-fail/issue-44216-sub-system-time.rs
rename to src/test/ui/issues/issue-44216-sub-system-time.rs
index 37ab0e7c3f99f..e58a31a41a5e9 100644
--- a/src/test/run-fail/issue-44216-sub-system-time.rs
+++ b/src/test/ui/issues/issue-44216-sub-system-time.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:overflow
+// ignore-emscripten no processes
 
 use std::time::{Duration, SystemTime};
 
diff --git a/src/test/run-fail/issue-51345.rs b/src/test/ui/issues/issue-51345-2.rs
similarity index 75%
rename from src/test/run-fail/issue-51345.rs
rename to src/test/ui/issues/issue-51345-2.rs
index c62f98ea78d1e..52f342a85005e 100644
--- a/src/test/run-fail/issue-51345.rs
+++ b/src/test/ui/issues/issue-51345-2.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern: thread 'main' panicked at 'explicit panic'
+// ignore-emscripten no processes
 
 fn main() {
     let mut vec = vec![];
diff --git a/src/test/run-fail/issue-6458-1.rs b/src/test/ui/issues/issue-6458-1.rs
similarity index 64%
rename from src/test/run-fail/issue-6458-1.rs
rename to src/test/ui/issues/issue-6458-1.rs
index 550bb2b832f44..184e4832b90b0 100644
--- a/src/test/run-fail/issue-6458-1.rs
+++ b/src/test/ui/issues/issue-6458-1.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn foo<T>(t: T) {}
 fn main() {
diff --git a/src/test/ui/issues/issue-811.rs b/src/test/ui/issues/issue-811.rs
new file mode 100644
index 0000000000000..f929d388819a9
--- /dev/null
+++ b/src/test/ui/issues/issue-811.rs
@@ -0,0 +1,26 @@
+// run-fail
+// error-pattern:quux
+// ignore-emscripten no processes
+
+use std::marker::PhantomData;
+
+fn test00_start(ch: Chan<isize>, message: isize) {
+    send(ch, message);
+}
+
+type TaskId = isize;
+type PortId = isize;
+
+struct Chan<T> {
+    task: TaskId,
+    port: PortId,
+    marker: PhantomData<*mut T>,
+}
+
+fn send<T: Send>(_ch: Chan<T>, _data: T) {
+    panic!();
+}
+
+fn main() {
+    panic!("quux");
+}
diff --git a/src/test/run-fail/issue-948.rs b/src/test/ui/issues/issue-948.rs
similarity index 82%
rename from src/test/run-fail/issue-948.rs
rename to src/test/ui/issues/issue-948.rs
index 8f1c6587f030a..b9bbeb3951e47 100644
--- a/src/test/run-fail/issue-948.rs
+++ b/src/test/ui/issues/issue-948.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:beep boop
+// ignore-emscripten no processes
 
 #![allow(unused_variables)]
 
diff --git a/src/test/run-fail/for-each-loop-panic.rs b/src/test/ui/loops/for-each-loop-panic.rs
similarity index 68%
rename from src/test/run-fail/for-each-loop-panic.rs
rename to src/test/ui/loops/for-each-loop-panic.rs
index d24e81e152c3c..5156999f4db9c 100644
--- a/src/test/run-fail/for-each-loop-panic.rs
+++ b/src/test/ui/loops/for-each-loop-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:moop
+// ignore-emscripten no processes
 
 fn main() {
     for _ in 0_usize..10_usize {
diff --git a/src/test/run-fail/assert-as-macro.rs b/src/test/ui/macros/assert-as-macro.rs
similarity index 62%
rename from src/test/run-fail/assert-as-macro.rs
rename to src/test/ui/macros/assert-as-macro.rs
index f715e21f781bd..23c0548081333 100644
--- a/src/test/run-fail/assert-as-macro.rs
+++ b/src/test/ui/macros/assert-as-macro.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:assertion failed: 1 == 2
+// ignore-emscripten no processes
 
 fn main() {
     assert!(1 == 2);
diff --git a/src/test/run-fail/assert-eq-macro-panic.rs b/src/test/ui/macros/assert-eq-macro-panic.rs
similarity index 76%
rename from src/test/run-fail/assert-eq-macro-panic.rs
rename to src/test/ui/macros/assert-eq-macro-panic.rs
index 863fec12d7475..5e505c30b3503 100644
--- a/src/test/run-fail/assert-eq-macro-panic.rs
+++ b/src/test/ui/macros/assert-eq-macro-panic.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:assertion failed: `(left == right)`
 // error-pattern: left: `14`
 // error-pattern:right: `15`
+// ignore-emscripten no processes
 
 fn main() {
     assert_eq!(14, 15);
diff --git a/src/test/run-fail/assert-macro-explicit.rs b/src/test/ui/macros/assert-macro-explicit.rs
similarity index 66%
rename from src/test/run-fail/assert-macro-explicit.rs
rename to src/test/ui/macros/assert-macro-explicit.rs
index 3689323c999d6..578ef5632780f 100644
--- a/src/test/run-fail/assert-macro-explicit.rs
+++ b/src/test/ui/macros/assert-macro-explicit.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'assertion failed: false'
+// ignore-emscripten no processes
 
 fn main() {
     assert!(false);
diff --git a/src/test/run-fail/assert-macro-fmt.rs b/src/test/ui/macros/assert-macro-fmt.rs
similarity index 73%
rename from src/test/run-fail/assert-macro-fmt.rs
rename to src/test/ui/macros/assert-macro-fmt.rs
index 9fbfb085c2fa5..b8d319d85f404 100644
--- a/src/test/run-fail/assert-macro-fmt.rs
+++ b/src/test/ui/macros/assert-macro-fmt.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-assert-fmt 42 rust'
+// ignore-emscripten no processes
 
 fn main() {
     assert!(false, "test-assert-fmt {} {}", 42, "rust");
diff --git a/src/test/run-fail/assert-macro-owned.rs b/src/test/ui/macros/assert-macro-owned.rs
similarity index 71%
rename from src/test/run-fail/assert-macro-owned.rs
rename to src/test/ui/macros/assert-macro-owned.rs
index bd58d35eb719f..b50fe65c0150f 100644
--- a/src/test/run-fail/assert-macro-owned.rs
+++ b/src/test/ui/macros/assert-macro-owned.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-assert-owned'
+// ignore-emscripten no processes
 
 fn main() {
     assert!(false, "test-assert-owned".to_string());
diff --git a/src/test/run-fail/assert-macro-static.rs b/src/test/ui/macros/assert-macro-static.rs
similarity index 69%
rename from src/test/run-fail/assert-macro-static.rs
rename to src/test/ui/macros/assert-macro-static.rs
index 650aaeab4f66f..dc5274a7e8880 100644
--- a/src/test/run-fail/assert-macro-static.rs
+++ b/src/test/ui/macros/assert-macro-static.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-assert-static'
+// ignore-emscripten no processes
 
 fn main() {
     assert!(false, "test-assert-static");
diff --git a/src/test/run-fail/assert-ne-macro-panic.rs b/src/test/ui/macros/assert-ne-macro-panic.rs
similarity index 76%
rename from src/test/run-fail/assert-ne-macro-panic.rs
rename to src/test/ui/macros/assert-ne-macro-panic.rs
index f55ef2b3ff5ca..4f507d7b54d99 100644
--- a/src/test/run-fail/assert-ne-macro-panic.rs
+++ b/src/test/ui/macros/assert-ne-macro-panic.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:assertion failed: `(left != right)`
 // error-pattern: left: `14`
 // error-pattern:right: `14`
+// ignore-emscripten no processes
 
 fn main() {
     assert_ne!(14, 14);
diff --git a/src/test/run-fail/die-macro.rs b/src/test/ui/macros/die-macro-2.rs
similarity index 55%
rename from src/test/run-fail/die-macro.rs
rename to src/test/ui/macros/die-macro-2.rs
index 846b9ea24d3b7..ebbce528a18fa 100644
--- a/src/test/run-fail/die-macro.rs
+++ b/src/test/ui/macros/die-macro-2.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:test
+// ignore-emscripten no processes
 
 fn main() {
     panic!("test");
diff --git a/src/test/run-fail/die-macro-expr.rs b/src/test/ui/macros/die-macro-expr.rs
similarity index 62%
rename from src/test/run-fail/die-macro-expr.rs
rename to src/test/ui/macros/die-macro-expr.rs
index 70413f978969c..c4b5f68ddf9ff 100644
--- a/src/test/run-fail/die-macro-expr.rs
+++ b/src/test/ui/macros/die-macro-expr.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:test
+// ignore-emscripten no processes
 
 fn main() {
     let __isize: isize = panic!("test");
diff --git a/src/test/run-fail/die-macro-pure.rs b/src/test/ui/macros/die-macro-pure.rs
similarity index 62%
rename from src/test/run-fail/die-macro-pure.rs
rename to src/test/ui/macros/die-macro-pure.rs
index cec0742d5035b..588fbe61b0e76 100644
--- a/src/test/run-fail/die-macro-pure.rs
+++ b/src/test/ui/macros/die-macro-pure.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:test
+// ignore-emscripten no processes
 
 fn f() {
     panic!("test");
diff --git a/src/test/run-fail/unimplemented-macro-panic.rs b/src/test/ui/macros/unimplemented-macro-panic.rs
similarity index 59%
rename from src/test/run-fail/unimplemented-macro-panic.rs
rename to src/test/ui/macros/unimplemented-macro-panic.rs
index 4d9cb740fc609..e7169903f8ea5 100644
--- a/src/test/run-fail/unimplemented-macro-panic.rs
+++ b/src/test/ui/macros/unimplemented-macro-panic.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:not implemented
+// ignore-emscripten no processes
+
 fn main() {
     unimplemented!()
 }
diff --git a/src/test/run-fail/unreachable-fmt-msg.rs b/src/test/ui/macros/unreachable-fmt-msg.rs
similarity index 74%
rename from src/test/run-fail/unreachable-fmt-msg.rs
rename to src/test/ui/macros/unreachable-fmt-msg.rs
index ac2a52163b4de..eb17ed92711c9 100644
--- a/src/test/run-fail/unreachable-fmt-msg.rs
+++ b/src/test/ui/macros/unreachable-fmt-msg.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:internal error: entered unreachable code: 6 is not prime
+// ignore-emscripten no processes
+
 fn main() {
     unreachable!("{} is not {}", 6u32, "prime");
 }
diff --git a/src/test/run-fail/unreachable-macro-panic.rs b/src/test/ui/macros/unreachable-macro-panic.rs
similarity index 65%
rename from src/test/run-fail/unreachable-macro-panic.rs
rename to src/test/ui/macros/unreachable-macro-panic.rs
index 597a01447228d..55e2102e2cc6f 100644
--- a/src/test/run-fail/unreachable-macro-panic.rs
+++ b/src/test/ui/macros/unreachable-macro-panic.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:internal error: entered unreachable code
+// ignore-emscripten no processes
+
 fn main() {
     unreachable!()
 }
diff --git a/src/test/run-fail/unreachable-static-msg.rs b/src/test/ui/macros/unreachable-static-msg.rs
similarity index 68%
rename from src/test/run-fail/unreachable-static-msg.rs
rename to src/test/ui/macros/unreachable-static-msg.rs
index 40a2881cc5714..55edf3af7d9e5 100644
--- a/src/test/run-fail/unreachable-static-msg.rs
+++ b/src/test/ui/macros/unreachable-static-msg.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:internal error: entered unreachable code: uhoh
+// ignore-emscripten no processes
+
 fn main() {
     unreachable!("uhoh")
 }
diff --git a/src/test/run-fail/unreachable.rs b/src/test/ui/macros/unreachable.rs
similarity index 65%
rename from src/test/run-fail/unreachable.rs
rename to src/test/ui/macros/unreachable.rs
index 597a01447228d..55e2102e2cc6f 100644
--- a/src/test/run-fail/unreachable.rs
+++ b/src/test/ui/macros/unreachable.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:internal error: entered unreachable code
+// ignore-emscripten no processes
+
 fn main() {
     unreachable!()
 }
diff --git a/src/test/run-fail/expr-match-panic-fn.rs b/src/test/ui/match/expr-match-panic-fn.rs
similarity index 80%
rename from src/test/run-fail/expr-match-panic-fn.rs
rename to src/test/ui/match/expr-match-panic-fn.rs
index 120df61b4bfe6..ea471717e883a 100644
--- a/src/test/run-fail/expr-match-panic-fn.rs
+++ b/src/test/ui/match/expr-match-panic-fn.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn f() -> ! {
     panic!()
diff --git a/src/test/run-fail/expr-match-panic.rs b/src/test/ui/match/expr-match-panic.rs
similarity index 73%
rename from src/test/run-fail/expr-match-panic.rs
rename to src/test/ui/match/expr-match-panic.rs
index b2f0179a08323..53f8a8bd30ddb 100644
--- a/src/test/run-fail/expr-match-panic.rs
+++ b/src/test/ui/match/expr-match-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn main() {
     let _x = match true {
diff --git a/src/test/run-fail/match-bot-panic.rs b/src/test/ui/match/match-bot-panic.rs
similarity index 84%
rename from src/test/run-fail/match-bot-panic.rs
rename to src/test/ui/match/match-bot-panic.rs
index f4da8c4e43fb6..e4a6f6d6fe44a 100644
--- a/src/test/run-fail/match-bot-panic.rs
+++ b/src/test/ui/match/match-bot-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:explicit panic
+// ignore-emscripten no processes
 
 #![allow(unreachable_code)]
 #![allow(unused_variables)]
diff --git a/src/test/run-fail/match-disc-bot.rs b/src/test/ui/match/match-disc-bot.rs
similarity index 77%
rename from src/test/run-fail/match-disc-bot.rs
rename to src/test/ui/match/match-disc-bot.rs
index a9312fbb1fb35..18cfd5e23950b 100644
--- a/src/test/run-fail/match-disc-bot.rs
+++ b/src/test/ui/match/match-disc-bot.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:quux
+// ignore-emscripten no processes
+
 fn f() -> ! {
     panic!("quux")
 }
diff --git a/src/test/run-fail/match-wildcards.rs b/src/test/ui/match/match-wildcards.rs
similarity index 87%
rename from src/test/run-fail/match-wildcards.rs
rename to src/test/ui/match/match-wildcards.rs
index 7a65ad5255896..43f6e4913ac76 100644
--- a/src/test/run-fail/match-wildcards.rs
+++ b/src/test/ui/match/match-wildcards.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:squirrelcupcake
+// ignore-emscripten no processes
+
 fn cmp() -> isize {
     match (Some('a'), None::<char>) {
         (Some(_), _) => {
diff --git a/src/test/run-fail/meta-revision-bad.rs b/src/test/ui/meta-revision-bad.rs
similarity index 96%
rename from src/test/run-fail/meta-revision-bad.rs
rename to src/test/ui/meta-revision-bad.rs
index 17f6398b73554..01f1518c1c6ed 100644
--- a/src/test/run-fail/meta-revision-bad.rs
+++ b/src/test/ui/meta-revision-bad.rs
@@ -1,6 +1,7 @@
 // Meta test for compiletest: check that when we give the wrong error
 // patterns, the test fails.
 
+// run-fail
 // revisions: foo bar
 // should-fail
 //[foo] error-pattern:bar
diff --git a/src/test/run-fail/meta-revision-ok.rs b/src/test/ui/meta-revision-ok.rs
similarity index 87%
rename from src/test/run-fail/meta-revision-ok.rs
rename to src/test/ui/meta-revision-ok.rs
index 8693ee5f4ef96..7df9a6ea48fae 100644
--- a/src/test/run-fail/meta-revision-ok.rs
+++ b/src/test/ui/meta-revision-ok.rs
@@ -1,9 +1,11 @@
 // Meta test for compiletest: check that when we give the right error
 // patterns, the test passes. See all `meta-revision-bad.rs`.
 
+// run-fail
 // revisions: foo bar
 //[foo] error-pattern:foo
 //[bar] error-pattern:bar
+// ignore-emscripten no processes
 
 #[cfg(foo)]
 fn die() {
diff --git a/src/test/run-fail/mir_codegen_calls_converging_drops.rs b/src/test/ui/mir/mir_codegen_calls_converging_drops.rs
similarity index 89%
rename from src/test/run-fail/mir_codegen_calls_converging_drops.rs
rename to src/test/ui/mir/mir_codegen_calls_converging_drops.rs
index ee0dc98ce6819..b562f93081419 100644
--- a/src/test/run-fail/mir_codegen_calls_converging_drops.rs
+++ b/src/test/ui/mir/mir_codegen_calls_converging_drops.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:converging_fn called
 // error-pattern:0 dropped
 // error-pattern:exit
+// ignore-emscripten no processes
 
 struct Droppable(u8);
 impl Drop for Droppable {
diff --git a/src/test/run-fail/mir_codegen_calls_converging_drops_2.rs b/src/test/ui/mir/mir_codegen_calls_converging_drops_2.rs
similarity index 90%
rename from src/test/run-fail/mir_codegen_calls_converging_drops_2.rs
rename to src/test/ui/mir/mir_codegen_calls_converging_drops_2.rs
index ee2c25ce8565e..e9446da9e3911 100644
--- a/src/test/run-fail/mir_codegen_calls_converging_drops_2.rs
+++ b/src/test/ui/mir/mir_codegen_calls_converging_drops_2.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:complex called
 // error-pattern:dropped
 // error-pattern:exit
+// ignore-emscripten no processes
 
 struct Droppable;
 impl Drop for Droppable {
diff --git a/src/test/run-fail/mir_codegen_calls_diverging.rs b/src/test/ui/mir/mir_codegen_calls_diverging.rs
similarity index 77%
rename from src/test/run-fail/mir_codegen_calls_diverging.rs
rename to src/test/ui/mir/mir_codegen_calls_diverging.rs
index dceae0a4e4a03..736d580e2da18 100644
--- a/src/test/run-fail/mir_codegen_calls_diverging.rs
+++ b/src/test/ui/mir/mir_codegen_calls_diverging.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:diverging_fn called
+// ignore-emscripten no processes
 
 fn diverging_fn() -> ! {
     panic!("diverging_fn called")
diff --git a/src/test/run-fail/mir_codegen_calls_diverging_drops.rs b/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
similarity index 88%
rename from src/test/run-fail/mir_codegen_calls_diverging_drops.rs
rename to src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
index 187e526f7c092..796d744779391 100644
--- a/src/test/run-fail/mir_codegen_calls_diverging_drops.rs
+++ b/src/test/ui/mir/mir_codegen_calls_diverging_drops.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:diverging_fn called
 // error-pattern:0 dropped
+// ignore-emscripten no processes
 
 struct Droppable(u8);
 impl Drop for Droppable {
diff --git a/src/test/run-fail/mir_drop_panics.rs b/src/test/ui/mir/mir_drop_panics.rs
similarity index 88%
rename from src/test/run-fail/mir_drop_panics.rs
rename to src/test/ui/mir/mir_drop_panics.rs
index bda555b926288..bf269ee901b93 100644
--- a/src/test/run-fail/mir_drop_panics.rs
+++ b/src/test/ui/mir/mir_drop_panics.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:panic 1
 // error-pattern:drop 2
+// ignore-emscripten no processes
 
 struct Droppable(u32);
 impl Drop for Droppable {
diff --git a/src/test/run-fail/mir_dynamic_drops_1.rs b/src/test/ui/mir/mir_dynamic_drops_1.rs
similarity index 93%
rename from src/test/run-fail/mir_dynamic_drops_1.rs
rename to src/test/ui/mir/mir_dynamic_drops_1.rs
index db8d0af29db2c..a77b2368d3baa 100644
--- a/src/test/run-fail/mir_dynamic_drops_1.rs
+++ b/src/test/ui/mir/mir_dynamic_drops_1.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:drop 1
 // error-pattern:drop 2
 // ignore-cloudabi no std::process
+// ignore-emscripten no processes
 
 /// Structure which will not allow to be dropped twice.
 struct Droppable<'a>(&'a mut bool, u32);
diff --git a/src/test/run-fail/mir_dynamic_drops_2.rs b/src/test/ui/mir/mir_dynamic_drops_2.rs
similarity index 92%
rename from src/test/run-fail/mir_dynamic_drops_2.rs
rename to src/test/ui/mir/mir_dynamic_drops_2.rs
index 21d3a042b1e31..088a16d338787 100644
--- a/src/test/run-fail/mir_dynamic_drops_2.rs
+++ b/src/test/ui/mir/mir_dynamic_drops_2.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:drop 1
 // ignore-cloudabi no std::process
+// ignore-emscripten no processes
 
 /// Structure which will not allow to be dropped twice.
 struct Droppable<'a>(&'a mut bool, u32);
diff --git a/src/test/run-fail/mir_dynamic_drops_3.rs b/src/test/ui/mir/mir_dynamic_drops_3.rs
similarity index 94%
rename from src/test/run-fail/mir_dynamic_drops_3.rs
rename to src/test/ui/mir/mir_dynamic_drops_3.rs
index b90499686823a..029bdcd9a1590 100644
--- a/src/test/run-fail/mir_dynamic_drops_3.rs
+++ b/src/test/ui/mir/mir_dynamic_drops_3.rs
@@ -1,8 +1,10 @@
+// run-fail
 // error-pattern:unwind happens
 // error-pattern:drop 3
 // error-pattern:drop 2
 // error-pattern:drop 1
 // ignore-cloudabi no std::process
+// ignore-emscripten no processes
 
 /// Structure which will not allow to be dropped twice.
 struct Droppable<'a>(&'a mut bool, u32);
diff --git a/src/test/run-fail/mir_indexing_oob_1.rs b/src/test/ui/mir/mir_indexing_oob_1.rs
similarity index 80%
rename from src/test/run-fail/mir_indexing_oob_1.rs
rename to src/test/ui/mir/mir_indexing_oob_1.rs
index 1cd53e309ebf9..6d769b6b23a84 100644
--- a/src/test/run-fail/mir_indexing_oob_1.rs
+++ b/src/test/ui/mir/mir_indexing_oob_1.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 5 but the index is 10
+// ignore-emscripten no processes
 
 const C: [u32; 5] = [0; 5];
 
diff --git a/src/test/run-fail/mir_indexing_oob_2.rs b/src/test/ui/mir/mir_indexing_oob_2.rs
similarity index 81%
rename from src/test/run-fail/mir_indexing_oob_2.rs
rename to src/test/ui/mir/mir_indexing_oob_2.rs
index 64b260993c994..a9e8505701536 100644
--- a/src/test/run-fail/mir_indexing_oob_2.rs
+++ b/src/test/ui/mir/mir_indexing_oob_2.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 5 but the index is 10
+// ignore-emscripten no processes
 
 const C: &'static [u8; 5] = b"hello";
 
diff --git a/src/test/run-fail/mir_indexing_oob_3.rs b/src/test/ui/mir/mir_indexing_oob_3.rs
similarity index 80%
rename from src/test/run-fail/mir_indexing_oob_3.rs
rename to src/test/ui/mir/mir_indexing_oob_3.rs
index 3688088439bbf..4f5cab59bfc67 100644
--- a/src/test/run-fail/mir_indexing_oob_3.rs
+++ b/src/test/ui/mir/mir_indexing_oob_3.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 5 but the index is 10
+// ignore-emscripten no processes
 
 const C: &'static [u8; 5] = b"hello";
 
diff --git a/src/test/run-fail/return-never-coerce.rs b/src/test/ui/never_type/return-never-coerce.rs
similarity index 84%
rename from src/test/run-fail/return-never-coerce.rs
rename to src/test/ui/never_type/return-never-coerce.rs
index 18182ff0f9d47..d615940eff1f0 100644
--- a/src/test/run-fail/return-never-coerce.rs
+++ b/src/test/ui/never_type/return-never-coerce.rs
@@ -1,6 +1,8 @@
 // Test that ! coerces to other types.
 
+// run-fail
 // error-pattern:aah!
+// ignore-emscripten no processes
 
 fn call_another_fn<T, F: FnOnce() -> T>(f: F) -> T {
     f()
diff --git a/src/test/run-fail/divide-by-zero.rs b/src/test/ui/numbers-arithmetic/divide-by-zero.rs
similarity index 72%
rename from src/test/run-fail/divide-by-zero.rs
rename to src/test/ui/numbers-arithmetic/divide-by-zero.rs
index ba93563154a3b..30e0e6c1bdd4c 100644
--- a/src/test/run-fail/divide-by-zero.rs
+++ b/src/test/ui/numbers-arithmetic/divide-by-zero.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:attempt to divide by zero
+// ignore-emscripten no processes
+
 #[allow(unconditional_panic)]
 fn main() {
     let y = 0;
diff --git a/src/test/run-fail/mod-zero.rs b/src/test/ui/numbers-arithmetic/mod-zero.rs
similarity index 76%
rename from src/test/run-fail/mod-zero.rs
rename to src/test/ui/numbers-arithmetic/mod-zero.rs
index f70b3ac920c61..083716394124a 100644
--- a/src/test/run-fail/mod-zero.rs
+++ b/src/test/ui/numbers-arithmetic/mod-zero.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:attempt to calculate the remainder with a divisor of zero
+// ignore-emscripten no processes
+
 #[allow(unconditional_panic)]
 fn main() {
     let y = 0;
diff --git a/src/test/run-fail/overflowing-add.rs b/src/test/ui/numbers-arithmetic/overflowing-add.rs
similarity index 80%
rename from src/test/run-fail/overflowing-add.rs
rename to src/test/ui/numbers-arithmetic/overflowing-add.rs
index 5ca91314d95a2..b0f22a74b4a8f 100644
--- a/src/test/run-fail/overflowing-add.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-add.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to add with overflow'
 // compile-flags: -C debug-assertions
+// ignore-emscripten no processes
 
 #![allow(arithmetic_overflow)]
 
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-1.rs b/src/test/ui/numbers-arithmetic/overflowing-lsh-1.rs
new file mode 100644
index 0000000000000..e5ce80336397d
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-1.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = 1_i32 << 32;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-1.stderr b/src/test/ui/numbers-arithmetic/overflowing-lsh-1.stderr
new file mode 100644
index 0000000000000..54008d33968bc
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-1.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-lsh-1.rs:7:14
+   |
+LL |     let _x = 1_i32 << 32;
+   |              ^^^^^^^^^^^ attempt to shift left with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-lsh-1.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-2.rs b/src/test/ui/numbers-arithmetic/overflowing-lsh-2.rs
new file mode 100644
index 0000000000000..7fd3407a056ef
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-2.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = 1 << -1;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-2.stderr b/src/test/ui/numbers-arithmetic/overflowing-lsh-2.stderr
new file mode 100644
index 0000000000000..872e71bb73796
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-2.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-lsh-2.rs:7:14
+   |
+LL |     let _x = 1 << -1;
+   |              ^^^^^^^ attempt to shift left with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-lsh-2.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-3.rs b/src/test/ui/numbers-arithmetic/overflowing-lsh-3.rs
new file mode 100644
index 0000000000000..e007eb4a2e2f7
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-3.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = 1_u64 << 64;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-3.stderr b/src/test/ui/numbers-arithmetic/overflowing-lsh-3.stderr
new file mode 100644
index 0000000000000..d55ed4a046c9d
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-3.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-lsh-3.rs:7:14
+   |
+LL |     let _x = 1_u64 << 64;
+   |              ^^^^^^^^^^^ attempt to shift left with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-lsh-3.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/run-fail/overflowing-lsh-4.rs b/src/test/ui/numbers-arithmetic/overflowing-lsh-4.rs
similarity index 85%
rename from src/test/run-fail/overflowing-lsh-4.rs
rename to src/test/ui/numbers-arithmetic/overflowing-lsh-4.rs
index 0d3912ce13f81..738d013391579 100644
--- a/src/test/run-fail/overflowing-lsh-4.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-4.rs
@@ -1,15 +1,15 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift left with overflow'
+// build-fail
 // compile-flags: -C debug-assertions
 
 // This function is checking that our automatic truncation does not
 // sidestep the overflow checking.
 
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
+#![deny(arithmetic_overflow, const_err)]
 
 fn main() {
     // this signals overflow when checking is on
     let x = 1_i8 << 17;
+    //~^ ERROR: this arithmetic operation will overflow
 
     // ... but when checking is off, the fallback will truncate the
     // input to its lower three bits (= 1). Note that this is *not*
diff --git a/src/test/ui/numbers-arithmetic/overflowing-lsh-4.stderr b/src/test/ui/numbers-arithmetic/overflowing-lsh-4.stderr
new file mode 100644
index 0000000000000..1ef8dd3466c0a
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-lsh-4.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-lsh-4.rs:11:13
+   |
+LL |     let x = 1_i8 << 17;
+   |             ^^^^^^^^^^ attempt to shift left with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-lsh-4.rs:7:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/run-fail/overflowing-mul.rs b/src/test/ui/numbers-arithmetic/overflowing-mul.rs
similarity index 80%
rename from src/test/run-fail/overflowing-mul.rs
rename to src/test/ui/numbers-arithmetic/overflowing-mul.rs
index 2dfc9bb5ae472..34ab5d8fad5e6 100644
--- a/src/test/run-fail/overflowing-mul.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-mul.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to multiply with overflow'
+// ignore-emscripten no processes
 // compile-flags: -C debug-assertions
 
 #![allow(arithmetic_overflow)]
diff --git a/src/test/run-fail/overflowing-neg.rs b/src/test/ui/numbers-arithmetic/overflowing-neg.rs
similarity index 80%
rename from src/test/run-fail/overflowing-neg.rs
rename to src/test/ui/numbers-arithmetic/overflowing-neg.rs
index f512aa35beda6..fe77544641cc1 100644
--- a/src/test/run-fail/overflowing-neg.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-neg.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to negate with overflow'
+// ignore-emscripten no processes
 // compile-flags: -C debug-assertions
 
 #![allow(arithmetic_overflow)]
diff --git a/src/test/run-fail/overflowing-pow-signed.rs b/src/test/ui/numbers-arithmetic/overflowing-pow-signed.rs
similarity index 77%
rename from src/test/run-fail/overflowing-pow-signed.rs
rename to src/test/ui/numbers-arithmetic/overflowing-pow-signed.rs
index c539c685faf9e..b59efe6f21278 100644
--- a/src/test/run-fail/overflowing-pow-signed.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-pow-signed.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to multiply with overflow'
+// ignore-emscripten no processes
 // compile-flags: -C debug-assertions
 
 fn main() {
diff --git a/src/test/run-fail/overflowing-pow-unsigned.rs b/src/test/ui/numbers-arithmetic/overflowing-pow-unsigned.rs
similarity index 77%
rename from src/test/run-fail/overflowing-pow-unsigned.rs
rename to src/test/ui/numbers-arithmetic/overflowing-pow-unsigned.rs
index 1d4fa3b5c7eb8..f2643c1646316 100644
--- a/src/test/run-fail/overflowing-pow-unsigned.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-pow-unsigned.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to multiply with overflow'
+// ignore-emscripten no processes
 // compile-flags: -C debug-assertions
 
 fn main() {
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-1.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-1.rs
new file mode 100644
index 0000000000000..f1488cf8559a2
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-1.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = -1_i32 >> 32;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-1.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-1.stderr
new file mode 100644
index 0000000000000..236303e2e9aa3
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-1.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-1.rs:7:14
+   |
+LL |     let _x = -1_i32 >> 32;
+   |              ^^^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-1.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-2.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-2.rs
new file mode 100644
index 0000000000000..39127b9703b6b
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-2.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = -1_i32 >> -1;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-2.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-2.stderr
new file mode 100644
index 0000000000000..981c8986f76b9
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-2.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-2.rs:7:14
+   |
+LL |     let _x = -1_i32 >> -1;
+   |              ^^^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-2.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-3.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-3.rs
new file mode 100644
index 0000000000000..8ee6dde93eafe
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-3.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _x = -1_i64 >> 64;
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-3.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-3.stderr
new file mode 100644
index 0000000000000..c2994503f0efc
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-3.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-3.rs:7:14
+   |
+LL |     let _x = -1_i64 >> 64;
+   |              ^^^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-3.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/run-fail/overflowing-rsh-4.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-4.rs
similarity index 85%
rename from src/test/run-fail/overflowing-rsh-4.rs
rename to src/test/ui/numbers-arithmetic/overflowing-rsh-4.rs
index 1877d5c968526..ce7f818e330b9 100644
--- a/src/test/run-fail/overflowing-rsh-4.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-4.rs
@@ -1,15 +1,15 @@
-// error-pattern:thread 'main' panicked at 'attempt to shift right with overflow'
+// build-fail
 // compile-flags: -C debug-assertions
 
 // This function is checking that our (type-based) automatic
 // truncation does not sidestep the overflow checking.
 
-#![warn(arithmetic_overflow)]
-#![warn(const_err)]
+#![deny(arithmetic_overflow, const_err)]
 
 fn main() {
     // this signals overflow when checking is on
     let x = 2_i8 >> 17;
+    //~^ ERROR: this arithmetic operation will overflow
 
     // ... but when checking is off, the fallback will truncate the
     // input to its lower three bits (= 1). Note that this is *not*
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-4.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-4.stderr
new file mode 100644
index 0000000000000..3db1da06dbed8
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-4.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-4.rs:11:13
+   |
+LL |     let x = 2_i8 >> 17;
+   |             ^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-4.rs:7:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-5.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-5.rs
new file mode 100644
index 0000000000000..88928c9959666
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-5.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _n = 1i64 >> [64][0];
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-5.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-5.stderr
new file mode 100644
index 0000000000000..bd3eae82977e3
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-5.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-5.rs:7:14
+   |
+LL |     let _n = 1i64 >> [64][0];
+   |              ^^^^^^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-5.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-6.rs b/src/test/ui/numbers-arithmetic/overflowing-rsh-6.rs
new file mode 100644
index 0000000000000..88928c9959666
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-6.rs
@@ -0,0 +1,9 @@
+// build-fail
+// compile-flags: -C debug-assertions
+
+#![deny(arithmetic_overflow, const_err)]
+
+fn main() {
+    let _n = 1i64 >> [64][0];
+    //~^ ERROR: this arithmetic operation will overflow
+}
diff --git a/src/test/ui/numbers-arithmetic/overflowing-rsh-6.stderr b/src/test/ui/numbers-arithmetic/overflowing-rsh-6.stderr
new file mode 100644
index 0000000000000..5d76639fb50f3
--- /dev/null
+++ b/src/test/ui/numbers-arithmetic/overflowing-rsh-6.stderr
@@ -0,0 +1,14 @@
+error: this arithmetic operation will overflow
+  --> $DIR/overflowing-rsh-6.rs:7:14
+   |
+LL |     let _n = 1i64 >> [64][0];
+   |              ^^^^^^^^^^^^^^^ attempt to shift right with overflow
+   |
+note: the lint level is defined here
+  --> $DIR/overflowing-rsh-6.rs:4:9
+   |
+LL | #![deny(arithmetic_overflow, const_err)]
+   |         ^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/run-fail/overflowing-sub.rs b/src/test/ui/numbers-arithmetic/overflowing-sub.rs
similarity index 80%
rename from src/test/run-fail/overflowing-sub.rs
rename to src/test/ui/numbers-arithmetic/overflowing-sub.rs
index fb096c31957ee..66685ac961a17 100644
--- a/src/test/run-fail/overflowing-sub.rs
+++ b/src/test/ui/numbers-arithmetic/overflowing-sub.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'attempt to subtract with overflow'
+// ignore-emscripten no processes
 // compile-flags: -C debug-assertions
 
 #![allow(arithmetic_overflow)]
diff --git a/src/test/run-fail/promoted_overflow.rs b/src/test/ui/numbers-arithmetic/promoted_overflow.rs
similarity index 92%
rename from src/test/run-fail/promoted_overflow.rs
rename to src/test/ui/numbers-arithmetic/promoted_overflow.rs
index 3c42da4b1d8ed..da59e81ed6bf7 100644
--- a/src/test/run-fail/promoted_overflow.rs
+++ b/src/test/ui/numbers-arithmetic/promoted_overflow.rs
@@ -1,5 +1,6 @@
 #![allow(arithmetic_overflow)]
 
+// run-fail
 // error-pattern: overflow
 // compile-flags: -C overflow-checks=yes
 
diff --git a/src/test/run-fail/unwind-interleaved.rs b/src/test/ui/panic-runtime/unwind-interleaved.rs
similarity index 59%
rename from src/test/run-fail/unwind-interleaved.rs
rename to src/test/ui/panic-runtime/unwind-interleaved.rs
index c163678ae9873..a8b3f3493097c 100644
--- a/src/test/run-fail/unwind-interleaved.rs
+++ b/src/test/ui/panic-runtime/unwind-interleaved.rs
@@ -1,4 +1,6 @@
-// error-pattern:fail
+// run-fail
+// error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn a() {}
 
diff --git a/src/test/run-fail/unwind-rec.rs b/src/test/ui/panic-runtime/unwind-rec.rs
similarity index 63%
rename from src/test/run-fail/unwind-rec.rs
rename to src/test/ui/panic-runtime/unwind-rec.rs
index 83ac19ff4a533..a9b7ee8ec7d4a 100644
--- a/src/test/run-fail/unwind-rec.rs
+++ b/src/test/ui/panic-runtime/unwind-rec.rs
@@ -1,5 +1,6 @@
-// error-pattern:fail
-
+// run-fail
+// error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn build() -> Vec<isize> {
     panic!();
diff --git a/src/test/run-fail/unwind-rec2.rs b/src/test/ui/panic-runtime/unwind-rec2.rs
similarity index 76%
rename from src/test/run-fail/unwind-rec2.rs
rename to src/test/ui/panic-runtime/unwind-rec2.rs
index 4dfc282b6c0f5..a130f9e879f2d 100644
--- a/src/test/run-fail/unwind-rec2.rs
+++ b/src/test/ui/panic-runtime/unwind-rec2.rs
@@ -1,5 +1,6 @@
-// error-pattern:fail
-
+// run-fail
+// error-pattern:explicit panic
+// ignore-emscripten no processes
 
 fn build1() -> Vec<isize> {
     vec![0, 0, 0, 0, 0, 0, 0]
diff --git a/src/test/ui/panic-runtime/unwind-unique.rs b/src/test/ui/panic-runtime/unwind-unique.rs
new file mode 100644
index 0000000000000..d66e39110eaca
--- /dev/null
+++ b/src/test/ui/panic-runtime/unwind-unique.rs
@@ -0,0 +1,12 @@
+// run-fail
+// error-pattern:explicit panic
+// ignore-emscripten no processes
+
+fn failfn() {
+    panic!();
+}
+
+fn main() {
+    Box::new(0);
+    failfn();
+}
diff --git a/src/test/run-fail/args-panic.rs b/src/test/ui/panics/args-panic.rs
similarity index 78%
rename from src/test/run-fail/args-panic.rs
rename to src/test/ui/panics/args-panic.rs
index 9a62652dde1e1..322054caf1161 100644
--- a/src/test/run-fail/args-panic.rs
+++ b/src/test/ui/panics/args-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:meep
+// ignore-emscripten no processes
 
 #![feature(box_syntax)]
 
diff --git a/src/test/run-fail/doublepanic.rs b/src/test/ui/panics/doublepanic.rs
similarity index 68%
rename from src/test/run-fail/doublepanic.rs
rename to src/test/ui/panics/doublepanic.rs
index 10d303e491e44..c1fcc875c3613 100644
--- a/src/test/run-fail/doublepanic.rs
+++ b/src/test/ui/panics/doublepanic.rs
@@ -1,6 +1,9 @@
 #![allow(unreachable_code)]
 
+// run-fail
 // error-pattern:One
+// ignore-emscripten no processes
+
 fn main() {
     panic!("One");
     panic!("Two");
diff --git a/src/test/run-fail/explicit-panic-msg.rs b/src/test/ui/panics/explicit-panic-msg.rs
similarity index 80%
rename from src/test/run-fail/explicit-panic-msg.rs
rename to src/test/ui/panics/explicit-panic-msg.rs
index 35e0518b9be57..1789e2e62c8b2 100644
--- a/src/test/run-fail/explicit-panic-msg.rs
+++ b/src/test/ui/panics/explicit-panic-msg.rs
@@ -1,7 +1,10 @@
 #![allow(unused_assignments)]
 #![allow(unused_variables)]
 
+// run-fail
 // error-pattern:wooooo
+// ignore-emscripten no processes
+
 fn main() {
     let mut a = 1;
     if 1 == 1 {
diff --git a/src/test/run-fail/explicit-panic.rs b/src/test/ui/panics/explicit-panic.rs
similarity index 53%
rename from src/test/run-fail/explicit-panic.rs
rename to src/test/ui/panics/explicit-panic.rs
index 11ea6b4122128..27c73d3493cb8 100644
--- a/src/test/run-fail/explicit-panic.rs
+++ b/src/test/ui/panics/explicit-panic.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:explicit
+// ignore-emscripten no processes
+
 fn main() {
     panic!();
 }
diff --git a/src/test/run-fail/fmt-panic.rs b/src/test/ui/panics/fmt-panic.rs
similarity index 70%
rename from src/test/run-fail/fmt-panic.rs
rename to src/test/ui/panics/fmt-panic.rs
index 5749991914c02..87fb2e6dd54b9 100644
--- a/src/test/run-fail/fmt-panic.rs
+++ b/src/test/ui/panics/fmt-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:meh
+// ignore-emscripten no processes
 
 fn main() {
     let str_var: String = "meh".to_string();
diff --git a/src/test/run-fail/main-panic.rs b/src/test/ui/panics/main-panic.rs
similarity index 60%
rename from src/test/run-fail/main-panic.rs
rename to src/test/ui/panics/main-panic.rs
index 3a9409562db6a..023ab47012596 100644
--- a/src/test/run-fail/main-panic.rs
+++ b/src/test/ui/panics/main-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at
+// ignore-emscripten no processes
 
 fn main() {
     panic!()
diff --git a/src/test/run-fail/panic-arg.rs b/src/test/ui/panics/panic-arg.rs
similarity index 68%
rename from src/test/run-fail/panic-arg.rs
rename to src/test/ui/panics/panic-arg.rs
index c164ff94630b1..f7c2dbb096f29 100644
--- a/src/test/run-fail/panic-arg.rs
+++ b/src/test/ui/panics/panic-arg.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:woe
+// ignore-emscripten no processes
+
 fn f(a: isize) {
     println!("{}", a);
 }
diff --git a/src/test/run-fail/panic-macro-any-wrapped.rs b/src/test/ui/panics/panic-macro-any-wrapped.rs
similarity index 65%
rename from src/test/run-fail/panic-macro-any-wrapped.rs
rename to src/test/ui/panics/panic-macro-any-wrapped.rs
index 83eb39a538f16..80c87c6f32c4b 100644
--- a/src/test/run-fail/panic-macro-any-wrapped.rs
+++ b/src/test/ui/panics/panic-macro-any-wrapped.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'Box<Any>'
+// ignore-emscripten no processes
 
 fn main() {
     panic!(Box::new(612_i64));
diff --git a/src/test/ui/panics/panic-macro-any.rs b/src/test/ui/panics/panic-macro-any.rs
new file mode 100644
index 0000000000000..ffc7114c1f5f2
--- /dev/null
+++ b/src/test/ui/panics/panic-macro-any.rs
@@ -0,0 +1,9 @@
+// run-fail
+// error-pattern:panicked at 'Box<Any>'
+// ignore-emscripten no processes
+
+#![feature(box_syntax)]
+
+fn main() {
+    panic!(box 413 as Box<dyn std::any::Any + Send>);
+}
diff --git a/src/test/run-fail/panic-macro-explicit.rs b/src/test/ui/panics/panic-macro-explicit.rs
similarity index 61%
rename from src/test/run-fail/panic-macro-explicit.rs
rename to src/test/ui/panics/panic-macro-explicit.rs
index f632034807cd4..ac4d6f8128b87 100644
--- a/src/test/run-fail/panic-macro-explicit.rs
+++ b/src/test/ui/panics/panic-macro-explicit.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'explicit panic'
+// ignore-emscripten no processes
 
 fn main() {
     panic!();
diff --git a/src/test/run-fail/panic-macro-fmt.rs b/src/test/ui/panics/panic-macro-fmt.rs
similarity index 71%
rename from src/test/run-fail/panic-macro-fmt.rs
rename to src/test/ui/panics/panic-macro-fmt.rs
index 658ae56e7e49f..a755ebc0f4e3a 100644
--- a/src/test/run-fail/panic-macro-fmt.rs
+++ b/src/test/ui/panics/panic-macro-fmt.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-fail-fmt 42 rust'
+// ignore-emscripten no processes
 
 fn main() {
     panic!("test-fail-fmt {} {}", 42, "rust");
diff --git a/src/test/run-fail/panic-macro-owned.rs b/src/test/ui/panics/panic-macro-owned.rs
similarity index 66%
rename from src/test/run-fail/panic-macro-owned.rs
rename to src/test/ui/panics/panic-macro-owned.rs
index 9b935717638bc..b898fde77a3b6 100644
--- a/src/test/run-fail/panic-macro-owned.rs
+++ b/src/test/ui/panics/panic-macro-owned.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-fail-owned'
+// ignore-emscripten no processes
 
 fn main() {
     panic!("test-fail-owned");
diff --git a/src/test/run-fail/panic-macro-static.rs b/src/test/ui/panics/panic-macro-static.rs
similarity index 67%
rename from src/test/run-fail/panic-macro-static.rs
rename to src/test/ui/panics/panic-macro-static.rs
index 31ac488beb234..a1d467cbfb524 100644
--- a/src/test/run-fail/panic-macro-static.rs
+++ b/src/test/ui/panics/panic-macro-static.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:panicked at 'test-fail-static'
+// ignore-emscripten no processes
 
 fn main() {
     panic!("test-fail-static");
diff --git a/src/test/run-fail/panic-main.rs b/src/test/ui/panics/panic-main.rs
similarity index 54%
rename from src/test/run-fail/panic-main.rs
rename to src/test/ui/panics/panic-main.rs
index 881eb7b5823b7..87df7688f0b40 100644
--- a/src/test/run-fail/panic-main.rs
+++ b/src/test/ui/panics/panic-main.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:moop
+// ignore-emscripten no processes
+
 fn main() {
     panic!("moop");
 }
diff --git a/src/test/run-fail/panic-parens.rs b/src/test/ui/panics/panic-parens.rs
similarity index 86%
rename from src/test/run-fail/panic-parens.rs
rename to src/test/ui/panics/panic-parens.rs
index e7f98e58c4f39..59ab544464967 100644
--- a/src/test/run-fail/panic-parens.rs
+++ b/src/test/ui/panics/panic-parens.rs
@@ -1,6 +1,9 @@
 // Fail macros without arguments need to be disambiguated in
 // certain positions
+
+// run-fail
 // error-pattern:oops
+// ignore-emscripten no processes
 
 fn bigpanic() {
     while (panic!("oops")) {
diff --git a/src/test/run-fail/panic-set-handler.rs b/src/test/ui/panics/panic-set-handler.rs
similarity index 81%
rename from src/test/run-fail/panic-set-handler.rs
rename to src/test/ui/panics/panic-set-handler.rs
index ea2b152c6c45a..3c00183e253d7 100644
--- a/src/test/run-fail/panic-set-handler.rs
+++ b/src/test/ui/panics/panic-set-handler.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:greetings from the panic handler
+// ignore-emscripten no processes
 
 use std::panic;
 
diff --git a/src/test/run-fail/panic-set-unset-handler.rs b/src/test/ui/panics/panic-set-unset-handler.rs
similarity index 83%
rename from src/test/run-fail/panic-set-unset-handler.rs
rename to src/test/ui/panics/panic-set-unset-handler.rs
index f8809c2f3889e..dde0c72f76550 100644
--- a/src/test/run-fail/panic-set-unset-handler.rs
+++ b/src/test/ui/panics/panic-set-unset-handler.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'foobar'
+// ignore-emscripten no processes
 
 use std::panic;
 
diff --git a/src/test/run-fail/panic-take-handler-nop.rs b/src/test/ui/panics/panic-take-handler-nop.rs
similarity index 73%
rename from src/test/run-fail/panic-take-handler-nop.rs
rename to src/test/ui/panics/panic-take-handler-nop.rs
index bb191a38f8473..41cbac97c443f 100644
--- a/src/test/run-fail/panic-take-handler-nop.rs
+++ b/src/test/ui/panics/panic-take-handler-nop.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:thread 'main' panicked at 'foobar'
+// ignore-emscripten no processes
 
 use std::panic;
 
diff --git a/src/test/run-fail/panic-task-name-none.rs b/src/test/ui/panics/panic-task-name-none.rs
similarity index 96%
rename from src/test/run-fail/panic-task-name-none.rs
rename to src/test/ui/panics/panic-task-name-none.rs
index c7f504046baed..4e95fb5bdb803 100644
--- a/src/test/run-fail/panic-task-name-none.rs
+++ b/src/test/ui/panics/panic-task-name-none.rs
@@ -1,3 +1,4 @@
+// run-fail
 // error-pattern:thread '<unnamed>' panicked at 'test'
 // ignore-emscripten Needs threads
 
diff --git a/src/test/run-fail/panic-task-name-owned.rs b/src/test/ui/panics/panic-task-name-owned.rs
similarity index 97%
rename from src/test/run-fail/panic-task-name-owned.rs
rename to src/test/ui/panics/panic-task-name-owned.rs
index 58f76ff787f9f..f85be7bb8e299 100644
--- a/src/test/run-fail/panic-task-name-owned.rs
+++ b/src/test/ui/panics/panic-task-name-owned.rs
@@ -1,3 +1,4 @@
+// run-fail
 // error-pattern:thread 'owned name' panicked at 'test'
 // ignore-emscripten Needs threads.
 
diff --git a/src/test/run-fail/panic.rs b/src/test/ui/panics/panic.rs
similarity index 55%
rename from src/test/run-fail/panic.rs
rename to src/test/ui/panics/panic.rs
index 95f20dedad26c..b6227a582ce0b 100644
--- a/src/test/run-fail/panic.rs
+++ b/src/test/ui/panics/panic.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:1 == 2
+// ignore-emscripten no processes
+
 fn main() {
     assert!(1 == 2);
 }
diff --git a/src/test/run-fail/result-get-panic.rs b/src/test/ui/panics/result-get-panic.rs
similarity index 79%
rename from src/test/run-fail/result-get-panic.rs
rename to src/test/ui/panics/result-get-panic.rs
index cddf20ee49df3..461f30b9134b0 100644
--- a/src/test/run-fail/result-get-panic.rs
+++ b/src/test/ui/panics/result-get-panic.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:called `Result::unwrap()` on an `Err` value
+// ignore-emscripten no processes
 
 use std::result::Result::Err;
 
diff --git a/src/test/run-fail/test-panic.rs b/src/test/ui/panics/test-panic.rs
similarity index 68%
rename from src/test/run-fail/test-panic.rs
rename to src/test/ui/panics/test-panic.rs
index 92f5146b710f2..85c9279cdf27b 100644
--- a/src/test/run-fail/test-panic.rs
+++ b/src/test/ui/panics/test-panic.rs
@@ -1,5 +1,5 @@
+// run-fail
 // check-stdout
-// error-pattern:thread 'test_foo' panicked at
 // compile-flags: --test
 // ignore-emscripten
 
diff --git a/src/test/run-fail/test-should-fail-bad-message.rs b/src/test/ui/panics/test-should-fail-bad-message.rs
similarity index 75%
rename from src/test/run-fail/test-should-fail-bad-message.rs
rename to src/test/ui/panics/test-should-fail-bad-message.rs
index 3c69bb07d3b18..701f267764858 100644
--- a/src/test/run-fail/test-should-fail-bad-message.rs
+++ b/src/test/ui/panics/test-should-fail-bad-message.rs
@@ -1,5 +1,5 @@
+// run-fail
 // check-stdout
-// error-pattern:thread 'test_foo' panicked at
 // compile-flags: --test
 // ignore-emscripten
 
diff --git a/src/test/run-fail/test-should-panic-bad-message.rs b/src/test/ui/panics/test-should-panic-bad-message.rs
similarity index 72%
rename from src/test/run-fail/test-should-panic-bad-message.rs
rename to src/test/ui/panics/test-should-panic-bad-message.rs
index b73d4d7377a34..a82c4e1440aae 100644
--- a/src/test/run-fail/test-should-panic-bad-message.rs
+++ b/src/test/ui/panics/test-should-panic-bad-message.rs
@@ -1,7 +1,8 @@
+// run-fail
 // compile-flags: --test
-
-// error-pattern:panicked at 'bar'
 // check-stdout
+// ignore-emscripten no processes
+
 #[test]
 #[should_panic(expected = "foo")]
 pub fn test_bar() {
diff --git a/src/test/run-fail/test-should-panic-no-message.rs b/src/test/ui/panics/test-should-panic-no-message.rs
similarity index 72%
rename from src/test/run-fail/test-should-panic-no-message.rs
rename to src/test/ui/panics/test-should-panic-no-message.rs
index b18389ec7440e..13f67a41cdd53 100644
--- a/src/test/run-fail/test-should-panic-no-message.rs
+++ b/src/test/ui/panics/test-should-panic-no-message.rs
@@ -1,7 +1,8 @@
+// run-fail
 // compile-flags: --test
-
-// error-pattern:panicked at 'explicit panic'
 // check-stdout
+// ignore-emscripten no processes
+
 #[test]
 #[should_panic(expected = "foo")]
 pub fn test_explicit() {
diff --git a/src/test/run-fail/unique-panic.rs b/src/test/ui/panics/unique-panic.rs
similarity index 84%
rename from src/test/run-fail/unique-panic.rs
rename to src/test/ui/panics/unique-panic.rs
index adefd796af492..22e0d63d5946f 100644
--- a/src/test/run-fail/unique-panic.rs
+++ b/src/test/ui/panics/unique-panic.rs
@@ -1,3 +1,4 @@
+// run-fail
 // error-pattern: panic
 
 fn main() {
diff --git a/src/test/run-fail/while-body-panics.rs b/src/test/ui/panics/while-body-panics.rs
similarity index 76%
rename from src/test/run-fail/while-body-panics.rs
rename to src/test/ui/panics/while-body-panics.rs
index 76acb4ba42de4..2c05eb389ccfe 100644
--- a/src/test/run-fail/while-body-panics.rs
+++ b/src/test/ui/panics/while-body-panics.rs
@@ -1,6 +1,9 @@
 #![allow(while_true)]
 
+// run-fail
 // error-pattern:quux
+// ignore-emscripten no processes
+
 fn main() {
     let _x: isize = {
         while true {
diff --git a/src/test/run-fail/while-panic.rs b/src/test/ui/panics/while-panic.rs
similarity index 77%
rename from src/test/run-fail/while-panic.rs
rename to src/test/ui/panics/while-panic.rs
index a0827591729f7..857f65a225228 100644
--- a/src/test/run-fail/while-panic.rs
+++ b/src/test/ui/panics/while-panic.rs
@@ -1,6 +1,9 @@
 #![allow(while_true)]
 
+// run-fail
 // error-pattern:giraffe
+// ignore-emscripten no processes
+
 fn main() {
     panic!({
         while true {
diff --git a/src/test/run-fail/tls-exit-status.rs b/src/test/ui/process/tls-exit-status.rs
similarity index 79%
rename from src/test/run-fail/tls-exit-status.rs
rename to src/test/ui/process/tls-exit-status.rs
index f15fd4f6894f7..36d6aff9e7730 100644
--- a/src/test/run-fail/tls-exit-status.rs
+++ b/src/test/ui/process/tls-exit-status.rs
@@ -1,6 +1,8 @@
+// run-fail
 // error-pattern:nonzero
 // exec-env:RUST_NEWRT=1
 // ignore-cloudabi no std::env
+// ignore-emscripten no processes
 
 use std::env;
 
diff --git a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs
similarity index 84%
rename from src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs
rename to src/test/ui/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs
index 796729ac4cc28..10dc6115dcb20 100644
--- a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs
+++ b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-box-dyn-error.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:returned Box<dyn Error> from main()
 // failure-status: 1
+// ignore-emscripten no processes
 
 use std::error::Error;
 use std::io;
diff --git a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-never.rs b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-never.rs
similarity index 60%
rename from src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-never.rs
rename to src/test/ui/rfc-1937-termination-trait/termination-trait-for-never.rs
index cb37b8e067090..faf2526c8d8fd 100644
--- a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-never.rs
+++ b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-never.rs
@@ -1,4 +1,6 @@
+// run-fail
 // error-pattern:oh, dear
+// ignore-emscripten no processes
 
 fn main() -> ! {
     panic!("oh, dear");
diff --git a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs
similarity index 83%
rename from src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs
rename to src/test/ui/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs
index 2f3a73a30ad95..6a625fb05e8f8 100644
--- a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs
+++ b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-result-box-error_err.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern:returned Box<Error> from main()
 // failure-status: 1
+// ignore-emscripten no processes
 
 use std::io::{Error, ErrorKind};
 
diff --git a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-str.rs b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-str.rs
similarity index 75%
rename from src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-str.rs
rename to src/test/ui/rfc-1937-termination-trait/termination-trait-for-str.rs
index bd6fa8af93513..94f16c6fd0212 100644
--- a/src/test/run-fail/rfc-1937-termination-trait/termination-trait-for-str.rs
+++ b/src/test/ui/rfc-1937-termination-trait/termination-trait-for-str.rs
@@ -1,5 +1,7 @@
+// run-fail
 // error-pattern: An error message for you
 // failure-status: 1
+// ignore-emscripten no processes
 
 fn main() -> Result<(), &'static str> {
     Err("An error message for you")
diff --git a/src/test/run-fail/str-overrun.rs b/src/test/ui/str/str-overrun.rs
similarity index 80%
rename from src/test/run-fail/str-overrun.rs
rename to src/test/ui/str/str-overrun.rs
index e566308a08767..a3ec8941322d5 100644
--- a/src/test/run-fail/str-overrun.rs
+++ b/src/test/ui/str/str-overrun.rs
@@ -1,4 +1,7 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 5 but the index is 5
+// ignore-emscripten no processes
+
 fn main() {
     let s: String = "hello".to_string();
 
diff --git a/src/test/run-fail/rhs-type.rs b/src/test/ui/structs/rhs-type.rs
similarity index 85%
rename from src/test/run-fail/rhs-type.rs
rename to src/test/ui/structs/rhs-type.rs
index 6efbeadd70421..c48e7c08ed2da 100644
--- a/src/test/run-fail/rhs-type.rs
+++ b/src/test/ui/structs/rhs-type.rs
@@ -1,6 +1,9 @@
 // Tests that codegen treats the rhs of pth's decl
 // as a _|_-typed thing, not a str-typed thing
+
+// run-fail
 // error-pattern:bye
+// ignore-emscripten no processes
 
 #![allow(unreachable_code)]
 #![allow(unused_variables)]
diff --git a/src/test/run-fail/run-unexported-tests.rs b/src/test/ui/test-attrs/run-unexported-tests.rs
similarity index 79%
rename from src/test/run-fail/run-unexported-tests.rs
rename to src/test/ui/test-attrs/run-unexported-tests.rs
index 11e100e716eb4..f533a3ef885d6 100644
--- a/src/test/run-fail/run-unexported-tests.rs
+++ b/src/test/ui/test-attrs/run-unexported-tests.rs
@@ -1,4 +1,4 @@
-// error-pattern:ran an unexported test
+// run-fail
 // compile-flags:--test
 // check-stdout
 
diff --git a/src/test/run-fail/task-spawn-barefn.rs b/src/test/ui/threads-sendsync/task-spawn-barefn.rs
similarity index 97%
rename from src/test/run-fail/task-spawn-barefn.rs
rename to src/test/ui/threads-sendsync/task-spawn-barefn.rs
index 497c5ea71804f..e5b899e0af967 100644
--- a/src/test/run-fail/task-spawn-barefn.rs
+++ b/src/test/ui/threads-sendsync/task-spawn-barefn.rs
@@ -1,3 +1,4 @@
+// run-fail
 // error-pattern:Ensure that the child thread runs by panicking
 // ignore-emscripten Needs threads.
 
diff --git a/src/test/run-fail/test-tasks-invalid-value.rs b/src/test/ui/threads-sendsync/test-tasks-invalid-value.rs
similarity index 95%
rename from src/test/run-fail/test-tasks-invalid-value.rs
rename to src/test/ui/threads-sendsync/test-tasks-invalid-value.rs
index 2dae1b4592c0f..6411421429c4c 100644
--- a/src/test/run-fail/test-tasks-invalid-value.rs
+++ b/src/test/ui/threads-sendsync/test-tasks-invalid-value.rs
@@ -1,6 +1,7 @@
 // This checks that RUST_TEST_THREADS not being 1, 2, ... is detected
 // properly.
 
+// run-fail
 // error-pattern:should be a positive integer
 // compile-flags: --test
 // exec-env:RUST_TEST_THREADS=foo
diff --git a/src/test/run-fail/vec-overrun.rs b/src/test/ui/vec/vec-overrun.rs
similarity index 83%
rename from src/test/run-fail/vec-overrun.rs
rename to src/test/ui/vec/vec-overrun.rs
index 2be945f736cb7..bdc7d507d5305 100644
--- a/src/test/run-fail/vec-overrun.rs
+++ b/src/test/ui/vec/vec-overrun.rs
@@ -1,5 +1,6 @@
+// run-fail
 // error-pattern:index out of bounds: the len is 1 but the index is 2
-
+// ignore-emscripten no processes
 
 fn main() {
     let v: Vec<isize> = vec![10];