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Flaky test: `TestLaunch`
Happened when running unit tests in vagrant for openbsd platform: https://github.com/docker/buildx/actions/runs/18729739901/job/53423646001?pr=3453#step:7:1208
Just fyi to keep track of it in case it happens again on native runners.
=== RUN TestLaunch
adapter_test.go:111: [client] send: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false}}
adapter_test.go:128: [server] recv: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false,"pathFormat":"path"}}
adapter_test.go:111: [server] send: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:128: [client] recv: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:111: [client] send: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:128: [server] recv: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:111: [server] send: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:111: [server] send: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:128: [client] recv: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:128: [client] recv: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:58:
Error Trace: /vagrant/dap/adapter_test.go:58
/vagrant/vendor/golang.org/x/sync/errgroup/errgroup.go:93
/usr/local/go/src/runtime/asm_amd64.s:1693
Error: did not receive initialized event
Test: TestLaunch
adapter_test.go:111: [client] send: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:128: [server] recv: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:111: [server] send: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:128: [client] recv: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:123: [server] recv error: context canceled
adapter_test.go:123: [client] recv error: context canceled
--- FAIL: TestLaunch (0.00s)
This can be reproduced quite easily by spamming -count=1000.
$ go test -count=1000 -timeout 30s -run ^TestLaunch$ github.com/docker/buildx/dap
--- FAIL: TestLaunch (10.00s)
adapter_test.go:111: [client] send: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false}}
adapter_test.go:128: [server] recv: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false,"pathFormat":"path"}}
adapter_test.go:111: [server] send: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:128: [client] recv: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:111: [client] send: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:128: [server] recv: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:111: [server] send: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:128: [client] recv: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:58:
Error Trace: .../buildx/dap/adapter_test.go:58
.../buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:93
/usr/local/go/src/runtime/asm_arm64.s:1268
Error: did not receive initialized event
Test: TestLaunch
adapter_test.go:111: [server] send: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:128: [client] recv: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:111: [client] send: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:128: [server] recv: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:111: [server] send: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:128: [client] recv: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:123: [server] recv error: context deadline exceeded
adapter_test.go:64:
Error Trace: .../buildx/dap/adapter_test.go:64
.../buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:93
/usr/local/go/src/runtime/asm_arm64.s:1268
Error: did not receive configurationDone response
Test: TestLaunch
adapter_test.go:123: [client] recv error: context canceled
panic: sync: WaitGroup is reused before previous Wait has returned
goroutine 12659 [running]:
sync.(*WaitGroup).Wait(0x14000a88f88)
/usr/local/go/src/sync/waitgroup.go:208 +0x14c
golang.org/x/sync/errgroup.(*Group).Wait(0x14000a88f80)
.../buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:56 +0x28
github.com/docker/buildx/dap.(*Server).Serve.func4()
.../buildx/dap/server.go:61 +0x50
golang.org/x/sync/errgroup.(*Group).Go.func1()
.../buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:93 +0x4c
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 12591
.../buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:78 +0x90
FAIL github.com/docker/buildx/dap 10.543s
FAIL
Got it again with openbsd in https://github.com/docker/buildx/actions/runs/19291895364/job/55164364388?pr=3462#step:7:1209
=== RUN TestLaunch
adapter_test.go:176: [client] send: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false}}
adapter_test.go:193: [server] recv: {"seq":1,"type":"request","command":"initialize","arguments":{"adapterID":"","linesStartAt1":false,"columnsStartAt1":false,"pathFormat":"path"}}
adapter_test.go:176: [server] send: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:193: [client] recv: {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true}}
adapter_test.go:176: [client] send: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:193: [server] recv: {"seq":2,"type":"request","command":"launch","arguments":null}
adapter_test.go:176: [server] send: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:176: [server] send: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:193: [client] recv: {"seq":2,"type":"response","request_seq":2,"success":true,"command":"launch"}
adapter_test.go:193: [client] recv: {"seq":3,"type":"event","event":"initialized"}
adapter_test.go:59:
Error Trace: /vagrant/dap/adapter_test.go:59
/vagrant/vendor/golang.org/x/sync/errgroup/errgroup.go:93
/usr/local/go/src/runtime/asm_amd64.s:1693
Error: did not receive initialized event
Test: TestLaunch
adapter_test.go:176: [client] send: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:193: [server] recv: {"seq":3,"type":"request","command":"configurationDone"}
adapter_test.go:176: [server] send: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:193: [client] recv: {"seq":4,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
adapter_test.go:188: [server] recv error: context canceled
adapter_test.go:188: [client] recv error: context canceled
--- FAIL: TestLaunch (0.00s)