Gracefully ignore transaction failure in plugin-babel-cached

[Rob--W]

Before this PR, any DB transaction error prevents the plugin from completing. Since the cache is a best-efforts attempt, I fix this by ignoring the error (instead of rethrowing the error).

[timvandermeij]

/botio-linux preview

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_preview from @timvandermeij received. Current queue size: 0

Live output at: http://54.67.70.0:8877/a66ab426fd42981/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.67.70.0:8877/a66ab426fd42981/output.txt

Total script time: 2.03 mins

Published

• Viewer: http://54.67.70.0:8877/a66ab426fd42981/web/viewer.html
• Extension: http://54.67.70.0:8877/a66ab426fd42981/extensions/firefox/pdf.js.xpi

[timvandermeij]

/botio test

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_test from @timvandermeij received. Current queue size: 0

Live output at: http://54.215.176.217:8877/41f62a9c72c697e/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Received

Command cmd_test from @timvandermeij received. Current queue size: 0

Live output at: http://54.67.70.0:8877/b9442ecdaf24d03/output.txt

[pdfjsbot]

From: Bot.io (Linux m4)

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Failed

Full output at http://54.67.70.0:8877/b9442ecdaf24d03/output.txt

Total script time: 20.94 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: FAILED

Image differences available at: http://54.67.70.0:8877/b9442ecdaf24d03/reftest-analyzer.html#web=eq.log

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://54.215.176.217:8877/41f62a9c72c697e/output.txt

Total script time: 25.74 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[timvandermeij]

Looks good, thank you!