net/http: TestResponseControllerEnableFullDuplex/h2 failures

[gopherbot]

#!watchflakes
default <- pkg == "net/http" && test == "TestResponseControllerEnableFullDuplex/h2"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestResponseControllerEnableFullDuplex/h2
=== PAUSE TestResponseControllerEnableFullDuplex/h2
=== CONT  TestResponseControllerEnableFullDuplex/h2
==================
WARNING: DATA RACE
Read at 0x00c0005d8ee3 by goroutine 12954:
  testing.(*common).logDepth()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1023 +0x504
  testing.(*common).log()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1010 +0xa4
...
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2159 +0x8be
  testing.(*M).Run()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2027 +0xf17
  net/http_test.TestMain()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/net/http/main_test.go:24 +0x64
  main.main()
      _testmain.go:1225 +0x2d4
==================
    testing.go:1398: race detected during execution of test
--- FAIL: TestResponseControllerEnableFullDuplex/h2 (0.12s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "net/http" && test == "TestResponseControllerEnableFullDuplex/h2"

2024-03-21 11:49 gotip-linux-amd64-race go@68a508cd net/http.TestResponseControllerEnableFullDuplex/h2 (log)

=== RUN   TestResponseControllerEnableFullDuplex/h2
=== PAUSE TestResponseControllerEnableFullDuplex/h2
=== CONT  TestResponseControllerEnableFullDuplex/h2
==================
WARNING: DATA RACE
Read at 0x00c0005d8ee3 by goroutine 12954:
  testing.(*common).logDepth()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1023 +0x504
  testing.(*common).log()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1010 +0xa4
...
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2159 +0x8be
  testing.(*M).Run()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2027 +0xf17
  net/http_test.TestMain()
      /home/swarming/.swarming/w/ir/x/w/goroot/src/net/http/main_test.go:24 +0x64
  main.main()
      _testmain.go:1225 +0x2d4
==================
    testing.go:1398: race detected during execution of test
--- FAIL: TestResponseControllerEnableFullDuplex/h2 (0.12s)

— watchflakes

[cherrymui]

Dup of #66519.