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0intro opened this issue Nov 10, 2017 · 10 comments
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cmd/go: TestGoTestJSON failing on Plan 9, DragonFly BSD and Solaris #22665

0intro opened this issue Nov 10, 2017 · 10 comments
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FrozenDueToAge OS-Dragonfly OS-NetBSD OS-Plan9 OS-Solaris
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Go1.10

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@0intro
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0intro commented Nov 10, 2017 •
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CL 76873 added TestGoTestJSON. This test is failing on Plan 9, DragonFly BSD and Solaris.

--- FAIL: TestGoTestJSON (5.27s)
	go_test.go:5088: running testgo [test -json -short -v sleepy1 sleepy2]
	go_test.go:5088: standard output:
	go_test.go:5088: {"Time":"2017-11-10T14:07:26.035849323-05:00","Action":"run","Package":"sleepy1","Test":"Test1"}
		{"Time":"2017-11-10T14:07:26.037243908-05:00","Action":"output","Package":"sleepy1","Test":"Test1","Output":"=== RUN   Test1\n"}
		{"Time":"2017-11-10T14:07:26.246511787-05:00","Action":"output","Package":"sleepy1","Test":"Test1","Output":"--- PASS: Test1 (0.21s)\n"}
		{"Time":"2017-11-10T14:07:26.246597273-05:00","Action":"pass","Package":"sleepy1","Test":"Test1","Elapsed":0.21}
		{"Time":"2017-11-10T14:07:26.246789196-05:00","Action":"output","Package":"sleepy1","Output":"PASS\n"}
		{"Time":"2017-11-10T14:07:26.247186451-05:00","Action":"output","Package":"sleepy1","Output":"ok  \tsleepy1\t0.233s\n"}
		{"Time":"2017-11-10T14:07:26.247250146-05:00","Action":"pass","Package":"sleepy1","Elapsed":0.233}
		{"Time":"2017-11-10T14:07:26.877004862-05:00","Action":"run","Package":"sleepy2","Test":"Test1"}
		{"Time":"2017-11-10T14:07:26.877110462-05:00","Action":"output","Package":"sleepy2","Test":"Test1","Output":"=== RUN   Test1\n"}
		{"Time":"2017-11-10T14:07:27.086531712-05:00","Action":"output","Package":"sleepy2","Test":"Test1","Output":"--- PASS: Test1 (0.21s)\n"}
		{"Time":"2017-11-10T14:07:27.08660295-05:00","Action":"pass","Package":"sleepy2","Test":"Test1","Elapsed":0.21}
		{"Time":"2017-11-10T14:07:27.08665994-05:00","Action":"output","Package":"sleepy2","Output":"PASS\n"}
		{"Time":"2017-11-10T14:07:27.087113348-05:00","Action":"output","Package":"sleepy2","Output":"ok  \tsleepy2\t0.231s\n"}
		{"Time":"2017-11-10T14:07:27.087177881-05:00","Action":"pass","Package":"sleepy2","Elapsed":0.232}
		
	go_test.go:5088: running testgo [test -json -short -v sleepy1 sleepy2]
	go_test.go:5088: standard output:
	go_test.go:5088: {"Time":"2017-11-10T14:07:28.503063301-05:00","Action":"run","Package":"sleepy1","Test":"Test1"}
		{"Time":"2017-11-10T14:07:28.503983526-05:00","Action":"output","Package":"sleepy1","Test":"Test1","Output":"=== RUN   Test1\n"}
		{"Time":"2017-11-10T14:07:28.70668328-05:00","Action":"output","Package":"sleepy1","Test":"Test1","Output":"--- PASS: Test1 (0.20s)\n"}
		{"Time":"2017-11-10T14:07:28.706766251-05:00","Action":"pass","Package":"sleepy1","Test":"Test1","Elapsed":0.2}
		{"Time":"2017-11-10T14:07:28.706829946-05:00","Action":"output","Package":"sleepy1","Output":"PASS\n"}
		{"Time":"2017-11-10T14:07:28.707235582-05:00","Action":"output","Package":"sleepy1","Output":"ok  \tsleepy1\t0.228s\n"}
		{"Time":"2017-11-10T14:07:28.707303468-05:00","Action":"pass","Package":"sleepy1","Elapsed":0.228}
		{"Time":"2017-11-10T14:07:29.210961306-05:00","Action":"run","Package":"sleepy2","Test":"Test1"}
		{"Time":"2017-11-10T14:07:29.211088696-05:00","Action":"output","Package":"sleepy2","Test":"Test1","Output":"=== RUN   Test1\n"}
		{"Time":"2017-11-10T14:07:29.416782952-05:00","Action":"output","Package":"sleepy2","Test":"Test1","Output":"--- PASS: Test1 (0.21s)\n"}
		{"Time":"2017-11-10T14:07:29.416905314-05:00","Action":"pass","Package":"sleepy2","Test":"Test1","Elapsed":0.21}
		{"Time":"2017-11-10T14:07:29.416950571-05:00","Action":"output","Package":"sleepy2","Output":"PASS\n"}
		{"Time":"2017-11-10T14:07:29.417348664-05:00","Action":"output","Package":"sleepy2","Output":"ok  \tsleepy2\t0.230s\n"}
		{"Time":"2017-11-10T14:07:29.417411521-05:00","Action":"pass","Package":"sleepy2","Elapsed":0.23}
		
	go_test.go:5106: did not find fmt interlaced with math
FAIL
FAIL	cmd/go	271.191s

See https://build.golang.org/log/16d3232d3e0ff30e3239e6a139f65267b9f2bab2

@rsc
@0intro 0intro added this to the Go1.10 milestone Nov 10, 2017
@0intro 0intro self-assigned this Nov 10, 2017
@0intro
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0intro commented Nov 10, 2017 •
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This test seems to succeed only on SMP machines.

@ALTree
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ALTree commented Nov 10, 2017

I see linux/386 failures, too

https://build.golang.org/log/b6647d0a867799ff03d09540c1f1e6c40940815a

and here on linux/amd64:

https://build.golang.org/log/43557fbe0bd51a2e49a16899b26bde30fc791aa1

I think it's just flaky.

@0intro
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0intro commented Nov 10, 2017

Yes, it's flaky, but it also never works on the plan9/386 builder which is uniprocessor.
I suspect that the dragonfly/amd64 builder is uniprocessor as well.

I reproduced the issue at home by running the test on the same Plan 9 machine with SMP enabled and SMP disabled: the test only works when SMP is enabled.

@gopherbot
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Change https://golang.org/cl/77130 mentions this issue: cmd/go: skip TestGoTestJSON on uniprocessor machines

@0intro
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0intro commented Nov 10, 2017

The flakiness can probably be reduced by increasing the number of tries.

@ALTree
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ALTree commented Nov 10, 2017

Ah, thanks. We'll need another issue to track the flakiness, then.

@0intro
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0intro commented Nov 10, 2017

I think it should be fine to track it here.

@timdarbydotnet
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Yes, the Dragonfly builder happens to be uniprocessor.

@gopherbot
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Change https://golang.org/cl/77310 mentions this issue: cmd/go: deflake TestGoTestJSON further

@ianlancetaylor
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Another failure in https://storage.googleapis.com/go-build-log/c325a08a/openbsd-amd64-60_d57a4740.log

@bradfitz bradfitz reopened this Nov 15, 2017
@bradfitz bradfitz mentioned this issue Nov 15, 2017
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@golang golang locked and limited conversation to collaborators Nov 16, 2018
@rsc rsc unassigned 0intro Jun 23, 2022
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