Add `CI_ONLY_WHEN_CHANNEL` and run `x86_64-gnu-stable` only on nightly#87550

Merged

bors merged 1 commit intorust-lang:masterfrom pietroalbini:ci-only-when-channel

Jul 29, 2021

+42-25

Commits on Jul 28, 2021

add CI_ONLY_WHEN_CHANNEL and run x86_64-gnu-stable only on nightly
pietroalbini
committed