race-detector: data race in tests

[srenatus]

ok  	github.com/open-policy-agent/opa/runtime	0.546s
==================
WARNING: DATA RACE
Read at 0x00c000496030 by goroutine 47:
  github.com/open-policy-agent/opa/logging/test.(*Logger).append()
      /src/logging/test/test.go:94 +0x164
  github.com/open-policy-agent/opa/logging/test.(*Logger).Debug()
      /src/logging/test/test.go:56 +0x64
  github.com/open-policy-agent/opa/download.(*Downloader).loop()
      /src/download/download.go:223 +0x511
  github.com/open-policy-agent/opa/download.(*Downloader).doStart.func1()
      /src/download/download.go:167 +0x58

Previous write at 0x00c000496030 by goroutine 38:
  github.com/open-policy-agent/opa/logging/test.(*Logger).append()
      /src/logging/test/test.go:94 +0x266
  github.com/open-policy-agent/opa/logging/test.(*Logger).Info()
      /src/logging/test/test.go:61 +0x64
  github.com/open-policy-agent/opa/plugins/bundle.(*Plugin).Stop()
      /src/plugins/bundle/plugin.go:139 +0x33d
  github.com/open-policy-agent/opa/plugins.(*Manager).Stop()
      /src/plugins/plugins.go:626 +0x194
  github.com/open-policy-agent/opa/sdk.(*OPA).Stop()
      /src/sdk/opa.go:211 +0x9d
  github.com/open-policy-agent/opa/sdk_test.TestPrintStatements.func2()
      /src/sdk/opa_test.go:837 +0x58
  runtime.deferreturn()
      /usr/local/go/src/runtime/panic.go:436 +0x32
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:1439 +0x213
  testing.(*T).Run.func1()
      /usr/local/go/src/testing/testing.go:1486 +0x47

Goroutine 47 (running) created at:
  github.com/open-policy-agent/opa/download.(*Downloader).doStart()
      /src/download/download.go:167 +0x119
  github.com/open-policy-agent/opa/download.(*Downloader).Start.func1()
      /src/download/download.go:158 +0x58

Goroutine 38 (running) created at:
  testing.(*T).Run()
      /usr/local/go/src/testing/testing.go:1486 +0x724
  testing.runTests.func1()
      /usr/local/go/src/testing/testing.go:1839 +0x99
  testing.tRunner()
      /usr/local/go/src/testing/testing.go:1439 +0x213
  testing.runTests()
      /usr/local/go/src/testing/testing.go:1837 +0x7e4
  testing.(*M).Run()
      /usr/local/go/src/testing/testing.go:1719 +0xa71
  main.main()
      _testmain.go:79 +0x2e4
==================
--- FAIL: TestPrintStatements (0.02s)
    testing.go:1[312](https://github.com/open-policy-agent/opa/runs/6192759383?check_suite_focus=true#step:3:312): race detected during execution of test
FAIL
FAIL	github.com/open-policy-agent/opa/sdk	0.495s

This isn't found every time, but it happened more than once.

[stale]

This issue has been automatically marked as inactive because it has not had any activity in the last 30 days.

[ashutosh-narkar]

Lets re-open if we observe this again.