pubsub: TestStreamingPullMultipleFetches failed

[flaky-bot]

This test failed!

To configure my behavior, see the Flaky Bot documentation.

If I'm commenting on this issue too often, add the flakybot: quiet label and
I will stop commenting.

---

commit: 049e632
buildURL: Build Status, Sponge
status: failed

[flaky-bot]

Looks like this issue is flaky. 😟

I'm going to leave this open and stop commenting.

A human should fix and close this.

---

When run at the same commit (049e632), this test passed in one build (Build Status, Sponge) and failed in another build (Build Status, Sponge).

[bhshkh]

Error from logs:

=== RUN   TestStreamingPullMultipleFetches
==================
WARNING: DATA RACE
Read at 0x00c0008aabd0 by goroutine 21722:
  runtime.raceread()
      :1 +0x1e
  cloud.google.com/go/pubsub.(*mockServer).StreamingPull()
      /tmpfs/src/google-cloud-go/pubsub/mock_test.go:103 +0x70
  cloud.google.com/go/pubsub/apiv1/pubsubpb._Subscriber_StreamingPull_Handler()
      /tmpfs/src/google-cloud-go/pubsub/apiv1/pubsubpb/pubsub.pb.go:9307 +0xe8
  google.golang.org/grpc.(*Server).processStreamingRPC()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:1690 +0x1ffb
  google.golang.org/grpc.(*Server).handleStream()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:1814 +0x134d
  google.golang.org/grpc.(*Server).serveStreams.func2.1()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:1030 +0x158

Previous write at 0x00c0008aabd0 by goroutine 21651:
  runtime.racewrite()
      :1 +0x1e
  cloud.google.com/go/pubsub.(*mockServer).wait()
      /tmpfs/src/google-cloud-go/pubsub/mock_test.go:99 +0xbfd
  cloud.google.com/go/pubsub.testStreamingPullIteration()
      /tmpfs/src/google-cloud-go/pubsub/streaming_pull_test.go:115 +0xc00
  cloud.google.com/go/pubsub.TestStreamingPullMultipleFetches()
      /tmpfs/src/google-cloud-go/pubsub/streaming_pull_test.go:65 +0x1fb
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:1690 +0x226
  testing.(*T).Run.gowrap1()
      /usr/local/go/src/testing/testing.go:1743 +0x44

Goroutine 21722 (running) created at:
  google.golang.org/grpc.(*Server).serveStreams.func2()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:1041 +0x224
  google.golang.org/grpc/internal/transport.(*http2Server).operateHeaders()
      /go/pkg/mod/google.golang.org/[email protected]/internal/transport/http2_server.go:626 +0x384a
  google.golang.org/grpc/internal/transport.(*http2Server).HandleStreams()
      /go/pkg/mod/google.golang.org/[email protected]/internal/transport/http2_server.go:667 +0x415
  google.golang.org/grpc.(*Server).serveStreams()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:1024 +0x69b
  google.golang.org/grpc.(*Server).handleRawConn.func1()
      /go/pkg/mod/google.golang.org/[email protected]/server.go:959 +0x86

Goroutine 21651 (running) created at:
  testing.(*T).Run()
      /usr/local/go/src/testing/testing.go:1743 +0x825
  testing.runTests.func1()
      /usr/local/go/src/testing/testing.go:2168 +0x85
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:1690 +0x226
  testing.runTests()
      /usr/local/go/src/testing/testing.go:2166 +0x8be
  testing.(*M).Run()
      /usr/local/go/src/testing/testing.go:2034 +0xf17
  main.main()
      _testmain.go:285 +0x164
==================
    testing.go:1399: race detected during execution of test
--- FAIL: TestStreamingPullMultipleFetches (0.01s)