cmd/go: TestScript/build_cache_pgo failures #81780

Activity

1. gopherbot commented on Sep 27, 2026

   

   gopherbot

   on Sep 27, 2026

   ContributorAuthor

   More actions

   Found new dashboard test flakes for:

   #!watchflakes
   default <- pkg == "cmd/go" && test == "TestScript/build_cache_pgo"
   

   2026-09-25 17:27 gotip-windows-arm64 go@53d7fa81 cmd/go.TestScript/build_cache_pgo (log)

   === RUN   TestScript/build_cache_pgo
   === PAUSE TestScript/build_cache_pgo
   === CONT  TestScript/build_cache_pgo
       script_test.go:141: 2026-09-27T03:16:25Z
       script_test.go:143: $WORK=C:\Users\swarming\.swarming\w\ir\x\t\cmd-go-test-1234942769\tmpdir1023591262\build_cache_pgo2571988248
       script_test.go:165: 
           PATH=C:\Users\swarming\.swarming\w\ir\x\t\cmd-go-test-1234942769\tmpdir1023591262\testbin;C:\Users\swarming\.swarming\w\ir\x\w\goroot\bin;C:\Users\swarming\.swarming\w\ir\x\w\goroot\bin;C:\Users\swarming\.swarming\w\ir\x\w\goroot\bin;C:\Users\swarming\.swarming\w\ir\cache\tools\bin;C:\Users\swarming\.swarming\w\ir\bbagent_utility_packages;C:\Users\swarming\.swarming\w\ir\bbagent_utility_packages\bin;C:\Users\swarming\.swarming\w\ir\cipd_bin_packages;C:\Users\swarming\.swarming\w\ir\cipd_bin_packages\bin;C:\Users\swarming\.swarming\w\ir\cache\cipd_client;C:\Users\swarming\.swarming\w\ir\cache\cipd_client\bin;C:\Users\swarming\.swarming\cipd_cache\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\ProgramData\chocolatey\bin;C:\Users\swarming\AppData\Local\Programs\Python\Python313-arm64\Scripts\;C:\Users\swarming\AppData\Local\Programs\Python\Python313-arm64\;C:\Users\swarming\AppData\Local\Programs\Python\Launcher\;C:\Users\swarming\AppData\Local\Microsoft\WindowsApps;C:\Users\swarming\.swarming\w\ir\cache\tools\cc\windows\gcc64\bin
           USERPROFILE=/no-home
           CCACHE_DISABLE=1
           GOARCH=arm64
   ...
           matched: "C:\\Users\\swarming\\.swarming\\w\\ir\\x\\w\\goroot\\pkg\\tool\\windows_arm64\\preprofile.exe" -o "$WORK\\b002\\pgo.preprofile" -i "C:\\Users\\swarming\\.swarming\\w\\ir\\x\\t\\cmd-go-test-1234942769\\tmpdir1023591262\\build_cache_pgo2571988248\\gopath\\src\\default.pgo"
           # ... building a different package should not run preprofile again, instead
           # using a profile from cache.
           #
           # Note we can't directly look for $GOCACHE in the regex below because the
           # Windows slashes would need to be escaped. Instead just look for the "gocache"
           # component (specified above) as an approximation. (0.030s)
           > go build -x -pgo=default.pgo lib2.go
       script_test.go:165: FAIL: testdata\script\build_cache_pgo.txt:23: go build -x -pgo=default.pgo lib2.go: exit status 1
   --- FAIL: TestScript/build_cache_pgo (0.94s)
   

   — watchflakes
2. gopherbot

   added

   AutomationIssues created by gopherbot or watchflakes automation.Issues created by gopherbot or watchflakes automation.

   on Sep 27, 2026
3. gopherbot

   added this to Test Flakeson Sep 27, 2026
4. prattmic commented on Sep 29, 2026

   

   prattmic

   on Sep 29, 2026

   Member

   More actions

   cc @golang/windows windows-arm64 timeout
5. prattmic

   added

   NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

   on Sep 29, 2026