17284:8b5ccd3ec19a tip
$ go test -race -short -cpu=1,8 std
sometimes reports:

WARNING: DATA RACE
Write by goroutine 7:
  log/syslog.TestConcurrentReconnect()
      src/pkg/log/syslog/syslog_test.go:297 +0x68
  testing.tRunner()
      src/pkg/testing/testing.go:360 +0x10e

Previous read by goroutine 50:
  log/syslog.func·001()
      src/pkg/log/syslog/syslog_test.go:61 +0x129

Goroutine 7 (running) created at:
  testing.RunTests()
      src/pkg/testing/testing.go:440 +0xaf1
  testing.Main()
      src/pkg/testing/testing.go:372 +0xad
  main.main()
      log/syslog/_test/_testmain.go:61 +0xdc

Goroutine 50 (finished) created at:
  log/syslog.runStreamSyslog()
      src/pkg/log/syslog/syslog_test.go:69 +0x152
  log/syslog.func·003()
      src/pkg/log/syslog/syslog_test.go:113 +0xc2