Fix collision doc tests randomly failing. #9434
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JohnTitor
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Update cargo 7 commits in 4369396ce7d270972955d876eaa4954bea56bcd9..f3e13226d6d17a2bc5f325303494b43a45f53b7f 2021-04-27 14:35:53 +0000 to 2021-04-30 21:50:27 +0000 - Fix problem with metrics test. (rust-lang/cargo#9440) - Show transfer rate when fetching/updating registry index (rust-lang/cargo#9395) - Fix collision doc tests randomly failing. (rust-lang/cargo#9434) - Add missing tracking issues and unstable docs. (rust-lang/cargo#9429) - Fix dep-info files emitting paths relative to deps' roots (rust-lang/cargo#9421) - Upgrade to GitHub-native Dependabot (rust-lang/cargo#9428) - Only deny the `unused_mut` lint (rust-lang/cargo#9425)
JohnTitor
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May 1, 2021
Update cargo 7 commits in 4369396ce7d270972955d876eaa4954bea56bcd9..f3e13226d6d17a2bc5f325303494b43a45f53b7f 2021-04-27 14:35:53 +0000 to 2021-04-30 21:50:27 +0000 - Fix problem with metrics test. (rust-lang/cargo#9440) - Show transfer rate when fetching/updating registry index (rust-lang/cargo#9395) - Fix collision doc tests randomly failing. (rust-lang/cargo#9434) - Add missing tracking issues and unstable docs. (rust-lang/cargo#9429) - Fix dep-info files emitting paths relative to deps' roots (rust-lang/cargo#9421) - Upgrade to GitHub-native Dependabot (rust-lang/cargo#9428) - Only deny the `unused_mut` lint (rust-lang/cargo#9425)
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This fixes some tests that were randomly failing on CI. The cause is that #9419 added a remove_dir_all on the
docdirectory. However, if two jobs are trying to write to that directory at the same time, this can cause errors. The failure rate is low (a little over 1%), and I was unable to reproduce locally (only on GitHub's CI and only on the Windows job).The solution is to run the jobs with -j1 so they run serially.
I only saw errors for
collision_doc_sources, but to be on the safe side I added j1 to similar tests.