observability: data race #5423
Description
Failing run on GA: https://github.com/grpc/grpc-go/runs/6889009694?check_suite_focus=true
Race detector output
==================
WARNING: DATA RACE
Read at 0x00c0002d86c3 by goroutine 7:
testing.(*common).logDepth()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:882 +0x4ce
testing.(*common).log()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:869 +0x9c
testing.(*common).Logf()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:920 +0x67
google.golang.org/grpc/gcp/observability.(*fakeOpenCensusExporter).ExportView()
/home/runner/work/grpc-go/grpc-go/gcp/observability/observability_test.go:369 +0x1f3
go.opencensus.io/stats/view.(*worker).reportView()
/home/runner/go/pkg/mod/[email protected]/stats/view/worker.go:357 +0x406
go.opencensus.io/stats/view.(*worker).reportUsage()
/home/runner/go/pkg/mod/[email protected]/stats/view/worker.go:365 +0x130
go.opencensus.io/stats/view.(*worker).start()
/home/runner/go/pkg/mod/[email protected]/stats/view/worker.go:280 +0x1c4
go.opencensus.io/stats/view.init.0.func1()
/home/runner/go/pkg/mod/[email protected]/stats/view/worker.go:34 +0x39
Previous write at 0x00c0002d86c3 by goroutine 10:
testing.tRunner.func1()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1426 +0x7af
runtime.deferreturn()
/opt/hostedtoolcache/go/1.18.3/x64/src/runtime/panic.go:436 +0x32
testing.(*T).Run.func1()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1486 +0x47
Goroutine 7 (running) created at:
go.opencensus.io/stats/view.init.0()
/home/runner/go/pkg/mod/[email protected]/stats/view/worker.go:34 +0xf6
Goroutine 10 (finished) created at:
testing.(*T).Run()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1486 +0x724
testing.runTests.func1()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1839 +0x99
testing.tRunner()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1439 +0x213
testing.runTests()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1837 +0x7e4
testing.(*M).Run()
/opt/hostedtoolcache/go/1.18.3/x64/src/testing/testing.go:1719 +0xa71
main.main()
_testmain.go:47 +0x2e4
==================
Found 1 data race(s)
FAIL google.golang.org/grpc/gcp/observability 0.281s