x/build: missing test output in case of timeouts #34576
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x/build issues (builders, bots, dashboards)
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NeedsInvestigation
Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Testing
An issue that has been verified to require only test changes, not just a test failure.
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The test log at https://build.golang.org/log/5f3ee279eff750a1e1fbb46a5866d993c36ca7a0 ends with the following output:
That seems to imply that the test has deadlocked, but in order to diagnose the deadlock we need the goroutine dump, which is not present.
It is not obvious to me whether the lack of goroutine dump is a bug in the builder/buildlet sharding and logging path, in
cmd/dist
, or in the runtime.Probably we should start the investigation with the builders.
CC @bradfitz @toothrot @dmitshur
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