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testing: timeout failure text attributed to irrelevant, passing test #67705

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mknyszek opened this issue May 29, 2024 · 3 comments
Closed

testing: timeout failure text attributed to irrelevant, passing test #67705

mknyszek opened this issue May 29, 2024 · 3 comments
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@mknyszek
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With LUCI, we use the structured JSON output from tests to get a structured presentation in the UI.

Recently, a failure on the gotip-linux-amd64-clang15 builder (https://ci.chromium.org/ui/p/golang/builders/ci-workers/gotip-linux-amd64-clang15-test_only/b8746575115407893665/overview) had a curious group of failures for a timeout where no test output actually showed the timeout. However, the timeout text is visible in the JSON and clearly pointing at TestLibFuzzer/libfuzzer1, but the output is attributed to TestLibFuzzer/libfuzzer2 (https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8746575115407893665/+/u/step/11/log/3#L1536_14). In case that link disappears, a copy of the JSON output is below.

TestLibFuzzer/libfuzzer2 JSON output 
{"Time":"2024-05-29T20:12:21.250480701Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"panic: test timed out after 3m0s\n"}
 {"Time":"2024-05-29T20:12:21.250523589Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\trunning tests:\n"}
 {"Time":"2024-05-29T20:12:21.250529187Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t\tTestLibFuzzer/libfuzzer1 (2m59s)\n"}
 {"Time":"2024-05-29T20:12:21.250532644Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.250536374Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 24 gp=0xc0000e6700 m=5 mp=0xc000100008 [running]:\n"}
 {"Time":"2024-05-29T20:12:21.25054129Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"panic({0x5742e0?, 0xc0001142b0?})\n"}
 {"Time":"2024-05-29T20:12:21.250550773Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:804 +0x168 fp=0xc000118f10 sp=0xc000118e60 pc=0x46f368\n"}
 {"Time":"2024-05-29T20:12:21.250561789Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*M).startAlarm.func1()\n"}
 {"Time":"2024-05-29T20:12:21.250565105Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2373 +0x385 fp=0xc000118fe0 sp=0xc000118f10 pc=0x4f0a45\n"}
 {"Time":"2024-05-29T20:12:21.250568432Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.25057205Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000118fe8 sp=0xc000118fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.250575443Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by time.goFunc\n"}
 {"Time":"2024-05-29T20:12:21.250580267Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/time/sleep.go:214 +0x2d\n"}
 {"Time":"2024-05-29T20:12:21.250583511Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.250587041Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 1 gp=0xc0000061c0 m=nil [chan receive]:\n"}
 {"Time":"2024-05-29T20:12:21.250597981Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0xb7d40?, 0x7fc57ffb31a8?, 0x18?, 0x0?, 0x582080?)\n"}
 {"Time":"2024-05-29T20:12:21.250601793Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc00007d9c8 sp=0xc00007d9a8 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.250605377Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv(0xc0000a2540, 0xc00007daaf, 0x1)\n"}
 {"Time":"2024-05-29T20:12:21.250610753Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:639 +0x41c fp=0xc00007da40 sp=0xc00007d9c8 pc=0x407edc\n"}
 {"Time":"2024-05-29T20:12:21.250616138Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv1(0x6ee3e0?, 0x5742e0?)\n"}
 {"Time":"2024-05-29T20:12:21.250652506Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:489 +0x12 fp=0xc00007da68 sp=0xc00007da40 pc=0x407ab2\n"}
 {"Time":"2024-05-29T20:12:21.250671486Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Run(0xc0000c44e0, {0x5a7543?, 0x0?}, 0x5b3e08)\n"}
 {"Time":"2024-05-29T20:12:21.250689064Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1751 +0x3ab fp=0xc00007db28 sp=0xc00007da68 pc=0x4ed52b\n"}
 {"Time":"2024-05-29T20:12:21.25069668Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.runTests.func1(0xc0000c44e0)\n"}
 {"Time":"2024-05-29T20:12:21.250713687Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2168 +0x37 fp=0xc00007db68 sp=0xc00007db28 pc=0x4ef797\n"}
 {"Time":"2024-05-29T20:12:21.250723343Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner(0xc0000c44e0, 0xc00007dc70)\n"}
 {"Time":"2024-05-29T20:12:21.250740007Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1690 +0xf4 fp=0xc00007dbb8 sp=0xc00007db68 pc=0x4ec694\n"}
 {"Time":"2024-05-29T20:12:21.250779238Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.runTests(0xc000012048, {0x6e9500, 0x6, 0x6}, {0x46ded0?, 0x46db3a?, 0x6ee720?})\n"}
 {"Time":"2024-05-29T20:12:21.250793673Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2166 +0x43d fp=0xc00007dca0 sp=0xc00007dbb8 pc=0x4ef67d\n"}
 {"Time":"2024-05-29T20:12:21.250801891Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*M).Run(0xc0000b20a0)\n"}
 {"Time":"2024-05-29T20:12:21.25082049Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2034 +0x64a fp=0xc00007ded0 sp=0xc00007dca0 pc=0x4ee0aa\n"}
 {"Time":"2024-05-29T20:12:21.250828973Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"main.main()\n"}
 {"Time":"2024-05-29T20:12:21.250844226Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t_testmain.go:55 +0x9b fp=0xc00007df50 sp=0xc00007ded0 pc=0x56353b\n"}
 {"Time":"2024-05-29T20:12:21.250852721Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.main()\n"}
 {"Time":"2024-05-29T20:12:21.250868391Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:272 +0x28b fp=0xc00007dfe0 sp=0xc00007df50 pc=0x43a9cb\n"}
 {"Time":"2024-05-29T20:12:21.250874367Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.250894458Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00007dfe8 sp=0xc00007dfe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.25090256Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.250907471Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 2 gp=0xc000006c40 m=nil [force gc (idle)]:\n"}
 {"Time":"2024-05-29T20:12:21.250935736Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)\n"}
 {"Time":"2024-05-29T20:12:21.250951033Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc000066fa8 sp=0xc000066f88 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.250959181Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goparkunlock(...)\n"}
 {"Time":"2024-05-29T20:12:21.250965188Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:430\n"}
 {"Time":"2024-05-29T20:12:21.250970331Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.forcegchelper()\n"}
 {"Time":"2024-05-29T20:12:21.250983661Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:337 +0xb3 fp=0xc000066fe0 sp=0xc000066fa8 pc=0x43ad13\n"}
 {"Time":"2024-05-29T20:12:21.250992032Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.251007814Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000066fe8 sp=0xc000066fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.251016591Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by runtime.init.7 in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.25102165Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:325 +0x1a\n"}
 {"Time":"2024-05-29T20:12:21.251026731Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.251035125Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 3 gp=0xc000007180 m=nil [GC sweep wait]:\n"}
 {"Time":"2024-05-29T20:12:21.251058842Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)\n"}
 {"Time":"2024-05-29T20:12:21.251075861Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc000067780 sp=0xc000067760 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.251084416Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goparkunlock(...)\n"}
 {"Time":"2024-05-29T20:12:21.251089852Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:430\n"}
 {"Time":"2024-05-29T20:12:21.25109495Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.bgsweep(0xc000094000)\n"}
 {"Time":"2024-05-29T20:12:21.25112067Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:277 +0x94 fp=0xc0000677c8 sp=0xc000067780 pc=0x423914\n"}
 {"Time":"2024-05-29T20:12:21.25112752Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gcenable.gowrap1()\n"}
 {"Time":"2024-05-29T20:12:21.251134681Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:203 +0x25 fp=0xc0000677e0 sp=0xc0000677c8 pc=0x4180a5\n"}
 {"Time":"2024-05-29T20:12:21.251143104Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.251159363Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0000677e8 sp=0xc0000677e0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.251167542Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by runtime.gcenable in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.251174464Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:203 +0x66\n"}
 {"Time":"2024-05-29T20:12:21.251182274Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.251187294Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 4 gp=0xc000007340 m=nil [GC scavenge wait]:\n"}
 {"Time":"2024-05-29T20:12:21.251209611Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0xc000094000?, 0x5e2770?, 0x1?, 0x0?, 0xc000007340?)\n"}
 {"Time":"2024-05-29T20:12:21.251226504Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc000067f78 sp=0xc000067f58 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.251234809Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goparkunlock(...)\n"}
 {"Time":"2024-05-29T20:12:21.251240344Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:430\n"}
 {"Time":"2024-05-29T20:12:21.251245632Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.(*scavengerState).park(0x6ee7a0)\n"}
 {"Time":"2024-05-29T20:12:21.251260518Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcscavenge.go:425 +0x49 fp=0xc000067fa8 sp=0xc000067f78 pc=0x421349\n"}
 {"Time":"2024-05-29T20:12:21.251268775Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.bgscavenge(0xc000094000)\n"}
 {"Time":"2024-05-29T20:12:21.251282676Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcscavenge.go:653 +0x3c fp=0xc000067fc8 sp=0xc000067fa8 pc=0x4218bc\n"}
 {"Time":"2024-05-29T20:12:21.251295654Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gcenable.gowrap2()\n"}
 {"Time":"2024-05-29T20:12:21.251304228Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:204 +0x25 fp=0xc000067fe0 sp=0xc000067fc8 pc=0x418045\n"}
 {"Time":"2024-05-29T20:12:21.251309267Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.251328707Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000067fe8 sp=0xc000067fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.251337072Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by runtime.gcenable in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.251342303Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:204 +0xa5\n"}
 {"Time":"2024-05-29T20:12:21.251347429Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.251354045Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 5 gp=0xc000007c00 m=nil [finalizer wait]:\n"}
 {"Time":"2024-05-29T20:12:21.251379154Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0x70e510?, 0x40e8a5?, 0xb0?, 0x1?, 0xc0000061c0?)\n"}
 {"Time":"2024-05-29T20:12:21.251414918Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc000066620 sp=0xc000066600 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.251425491Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.runfinq()\n"}
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 {"Time":"2024-05-29T20:12:21.25170332Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0000dffe8 sp=0xc0000dffe0 pc=0x4773c1\n"}
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 {"Time":"2024-05-29T20:12:21.251907107Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"internal/poll.(*FD).Read(0xc000134540, {0xc0001792d6, 0xd2a, 0xd2a})\n"}
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 {"Time":"2024-05-29T20:12:21.252003935Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os.(*fileWithoutWriteTo).Read(0xc0001244e0?, {0xc0001792d6?, 0x40c31f?, 0x57e820?})\n"}
 {"Time":"2024-05-29T20:12:21.252018941Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t\u003cautogenerated\u003e:1 +0x25 fp=0xc00011cd28 sp=0xc00011ccf8 pc=0x4a9e25\n"}
 {"Time":"2024-05-29T20:12:21.252037817Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"bytes.(*Buffer).ReadFrom(0xc0001244e0, {0x5e4ee0, 0xc0001160b0})\n"}
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 {"Time":"2024-05-29T20:12:21.252107945Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:415 +0x151 fp=0xc00011cdf8 sp=0xc00011cd80 pc=0x49b3d1\n"}
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 {"Time":"2024-05-29T20:12:21.252216193Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"io.copyBuffer({0x5e5180, 0xc0001244e0}, {0x5e4f60, 0xc000116098}, {0x0, 0x0, 0x0})\n"}
 {"Time":"2024-05-29T20:12:21.252232864Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:411 +0x9d fp=0xc00011cf00 sp=0xc00011ce88 pc=0x49b31d\n"}
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 {"Time":"2024-05-29T20:12:21.252297691Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os/exec.(*Cmd).Start.gowrap1()\n"}
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 {"Time":"2024-05-29T20:12:21.252340821Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by os/exec.(*Cmd).Start in goroutine 34\n"}
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 {"Time":"2024-05-29T20:12:21.252438716Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:639 +0x41c fp=0xc000119d90 sp=0xc000119d18 pc=0x407edc\n"}
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 {"Time":"2024-05-29T20:12:21.252514948Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/cmd/cgo/internal/testsanitizers/cshared_test.go:23 +0x75 fp=0xc000119f70 sp=0xc000119e50 pc=0x55fc35\n"}
 {"Time":"2024-05-29T20:12:21.252526556Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner(0xc0000c49c0, 0x5b3e18)\n"}
 {"Time":"2024-05-29T20:12:21.25253627Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1690 +0xf4 fp=0xc000119fc0 sp=0xc000119f70 pc=0x4ec694\n"}
 {"Time":"2024-05-29T20:12:21.252544725Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Run.gowrap1()\n"}
 {"Time":"2024-05-29T20:12:21.252557069Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x25 fp=0xc000119fe0 sp=0xc000119fc0 pc=0x4ed685\n"}
 {"Time":"2024-05-29T20:12:21.252565702Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.252580124Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000119fe8 sp=0xc000119fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.252588995Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by testing.(*T).Run in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.252594192Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x390\n"}
 {"Time":"2024-05-29T20:12:21.25259925Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.252605092Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 13 gp=0xc000104380 m=nil [chan receive]:\n"}
 {"Time":"2024-05-29T20:12:21.252638206Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0xc0000b7c28?, 0xc000016060?, 0x0?, 0x0?, 0xc000079cc0?)\n"}
 {"Time":"2024-05-29T20:12:21.252651636Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc000079c70 sp=0xc000079c50 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.252665519Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv(0xc0000a21c0, 0x0, 0x1)\n"}
 {"Time":"2024-05-29T20:12:21.252684499Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:639 +0x41c fp=0xc000079ce8 sp=0xc000079c70 pc=0x407edc\n"}
 {"Time":"2024-05-29T20:12:21.252694523Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv1(0x6ee3e0?, 0x5742e0?)\n"}
 {"Time":"2024-05-29T20:12:21.252713604Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:489 +0x12 fp=0xc000079d10 sp=0xc000079ce8 pc=0x407ab2\n"}
 {"Time":"2024-05-29T20:12:21.252721984Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Parallel(0xc0000c4820)\n"}
 {"Time":"2024-05-29T20:12:21.252736077Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1484 +0x215 fp=0xc000079da8 sp=0xc000079d10 pc=0x4ec3f5\n"}
 {"Time":"2024-05-29T20:12:21.252744677Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"cmd/cgo/internal/testsanitizers_test.TestASANLinkerX(0xc0000c4820)\n"}
 {"Time":"2024-05-29T20:12:21.252760668Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/cmd/cgo/internal/testsanitizers/asan_test.go:128 +0x369 fp=0xc000079f70 sp=0xc000079da8 pc=0x55c369\n"}
 {"Time":"2024-05-29T20:12:21.252769059Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner(0xc0000c4820, 0x5b3e00)\n"}
 {"Time":"2024-05-29T20:12:21.252786358Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1690 +0xf4 fp=0xc000079fc0 sp=0xc000079f70 pc=0x4ec694\n"}
 {"Time":"2024-05-29T20:12:21.252795065Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Run.gowrap1()\n"}
 {"Time":"2024-05-29T20:12:21.252805841Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x25 fp=0xc000079fe0 sp=0xc000079fc0 pc=0x4ed685\n"}
 {"Time":"2024-05-29T20:12:21.252814077Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.252829736Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000079fe8 sp=0xc000079fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.252838003Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by testing.(*T).Run in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.252845048Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x390\n"}
 {"Time":"2024-05-29T20:12:21.252848592Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.252854305Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 15 gp=0xc0000e6380 m=nil [chan receive]:\n"}
 {"Time":"2024-05-29T20:12:21.252878675Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.gopark(0xc0000e1d78?, 0x40d34c?, 0x0?, 0x0?, 0xc00002a830?)\n"}
 {"Time":"2024-05-29T20:12:21.252895642Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:424 +0xce fp=0xc0000e1d40 sp=0xc0000e1d20 pc=0x46f74e\n"}
 {"Time":"2024-05-29T20:12:21.252907198Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv(0xc0000a2620, 0x0, 0x1)\n"}
 {"Time":"2024-05-29T20:12:21.252928116Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:639 +0x41c fp=0xc0000e1db8 sp=0xc0000e1d40 pc=0x407edc\n"}
 {"Time":"2024-05-29T20:12:21.252936874Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.chanrecv1(0xc0000a24d0?, 0x5742e0?)\n"}
 {"Time":"2024-05-29T20:12:21.25295808Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:489 +0x12 fp=0xc0000e1de0 sp=0xc0000e1db8 pc=0x407ab2\n"}
 {"Time":"2024-05-29T20:12:21.25296626Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner.func1()\n"}
 {"Time":"2024-05-29T20:12:21.252980131Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1651 +0x49b fp=0xc0000e1f70 sp=0xc0000e1de0 pc=0x4ecbdb\n"}
 {"Time":"2024-05-29T20:12:21.252988973Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner(0xc0000c4b60, 0x5b3e08)\n"}
 {"Time":"2024-05-29T20:12:21.253006376Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1696 +0x12d fp=0xc0000e1fc0 sp=0xc0000e1f70 pc=0x4ec6cd\n"}
 {"Time":"2024-05-29T20:12:21.25301477Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Run.gowrap1()\n"}
 {"Time":"2024-05-29T20:12:21.25302558Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x25 fp=0xc0000e1fe0 sp=0xc0000e1fc0 pc=0x4ed685\n"}
 {"Time":"2024-05-29T20:12:21.253033803Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.253049541Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc0000e1fe8 sp=0xc0000e1fe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.253057972Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by testing.(*T).Run in goroutine 1\n"}
 {"Time":"2024-05-29T20:12:21.253064676Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x390\n"}
 {"Time":"2024-05-29T20:12:21.253072649Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\n"}
 {"Time":"2024-05-29T20:12:21.25307815Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"goroutine 34 gp=0xc0000e6540 m=4 mp=0xc00006d508 [syscall]:\n"}
 {"Time":"2024-05-29T20:12:21.253109931Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"syscall.Syscall6(0xf7, 0x3, 0xb, 0xc00011ab98, 0x4, 0xc00014c1b0, 0x0)\n"}
 {"Time":"2024-05-29T20:12:21.253123403Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/syscall/syscall_linux.go:95 +0x39 fp=0xc00011ab58 sp=0xc00011aaf8 pc=0x487cb9\n"}
 {"Time":"2024-05-29T20:12:21.253130997Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os.(*Process).pidfdWait(0xc00012c2d0)\n"}
 {"Time":"2024-05-29T20:12:21.253147074Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/pidfd_linux.go:84 +0xdb fp=0xc00011ac48 sp=0xc00011ab58 pc=0x4a623b\n"}
 {"Time":"2024-05-29T20:12:21.253155772Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os.(*Process).wait(0xc00012c2d0)\n"}
 {"Time":"2024-05-29T20:12:21.253172214Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/exec_unix.go:37 +0x34 fp=0xc00011acc0 sp=0xc00011ac48 pc=0x4a3674\n"}
 {"Time":"2024-05-29T20:12:21.253180872Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os.(*Process).Wait(...)\n"}
 {"Time":"2024-05-29T20:12:21.253184408Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/exec.go:135\n"}
 {"Time":"2024-05-29T20:12:21.253189374Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os/exec.(*Cmd).Wait(0xc00012e420)\n"}
 {"Time":"2024-05-29T20:12:21.253201508Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/exec/exec.go:897 +0x45 fp=0xc00011ad20 sp=0xc00011acc0 pc=0x4f9d45\n"}
 {"Time":"2024-05-29T20:12:21.253209674Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os/exec.(*Cmd).Run(0xc00012e420)\n"}
 {"Time":"2024-05-29T20:12:21.253223417Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/exec/exec.go:607 +0x2d fp=0xc00011ad38 sp=0xc00011ad20 pc=0x4f89cd\n"}
 {"Time":"2024-05-29T20:12:21.25323167Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"os/exec.(*Cmd).CombinedOutput(0xc00012e420)\n"}
 {"Time":"2024-05-29T20:12:21.253249146Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/os/exec/exec.go:1012 +0x85 fp=0xc00011ad60 sp=0xc00011ad38 pc=0x4fa5e5\n"}
 {"Time":"2024-05-29T20:12:21.253257574Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"cmd/cgo/internal/testsanitizers_test.TestLibFuzzer.func1(0xc0000c4d00)\n"}
 {"Time":"2024-05-29T20:12:21.253273533Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/cmd/cgo/internal/testsanitizers/libfuzzer_test.go:69 +0x7f4 fp=0xc00011af70 sp=0xc00011ad60 pc=0x561874\n"}
 {"Time":"2024-05-29T20:12:21.253282515Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.tRunner(0xc0000c4d00, 0xc0000a0280)\n"}
 {"Time":"2024-05-29T20:12:21.253293203Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1690 +0xf4 fp=0xc00011afc0 sp=0xc00011af70 pc=0x4ec694\n"}
 {"Time":"2024-05-29T20:12:21.253301443Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"testing.(*T).Run.gowrap1()\n"}
 {"Time":"2024-05-29T20:12:21.253313662Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x25 fp=0xc00011afe0 sp=0xc00011afc0 pc=0x4ed685\n"}
 {"Time":"2024-05-29T20:12:21.253321893Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"runtime.goexit({})\n"}
 {"Time":"2024-05-29T20:12:21.25333572Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00011afe8 sp=0xc00011afe0 pc=0x4773c1\n"}
 {"Time":"2024-05-29T20:12:21.253344201Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"created by testing.(*T).Run in goroutine 15\n"}
 {"Time":"2024-05-29T20:12:21.253352727Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Output":"\t/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1743 +0x390\n"}
 {"Time":"2024-05-29T20:12:21.254136009Z","Action":"pass","Package":"cmd/cgo/internal/testsanitizers","Test":"TestLibFuzzer/libfuzzer2","Elapsed":70.53}
 {"Time":"2024-05-29T20:12:21.254164129Z","Action":"output","Package":"cmd/cgo/internal/testsanitizers","Output":"FAIL\tcmd/cgo/internal/testsanitizers\t180.052s\n"}
 {"Time":"2024-05-29T20:12:21.254179233Z","Action":"fail","Package":"cmd/cgo/internal/testsanitizers","Elapsed":180.052}

IMO, this timeout output should really be surfaced as part of the package-level output, which is clearly marked with a fail.

CC @adonovan @neild
@mknyszek mknyszek added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Jun 3, 2024
@mknyszek mknyszek added this to the Backlog milestone Jun 3, 2024
@seankhliao
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is this a dupe of #57305 ?

@mknyszek
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Yeah, I think you're right. Thanks for digging that up.

@seankhliao
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Duplicate of #57305

@seankhliao seankhliao marked this as a duplicate of #57305 Jun 16, 2024
@seankhliao seankhliao closed this as not planned Won't fix, can't repro, duplicate, stale Jun 16, 2024
@gabyhelp gabyhelp mentioned this issue Jun 19, 2024
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