Test failure (flaky)

[rumpl]

Sometimes, in the CI our tests fail with:

2026/01/20 20:02:27 INFO Migrated aliases from legacy file path=/tmp/TestConfig_MigrateWhenConfigEmpty2747535613/001/aliases.yaml count=1
2026/01/20 20:02:27 WARN Failed to parse legacy aliases file path=/tmp/TestConfig_MigrateFromLegacy_MalformedFile50155862/001/aliases.yaml error="[1:6] mapping value is not allowed in this context\n>  1 | not: valid: yaml: content\n            ^\n"
2026/01/20 20:02:27 INFO Migrated aliases from legacy file path=/tmp/TestConfig_MigrateFromLegacy2825870813/001/aliases.yaml count=2
fatal error: concurrent map writes

goroutine 43 [running]:
internal/runtime/maps.fatal({0x6feace?, 0x6b0aa0?})
	/opt/hostedtoolcache/go/1.25.5/x64/src/runtime/panic.go:1046 +0x18
github.com/docker/cagent/pkg/userconfig.(*Config).SetAlias(0xc000094d50, {0x6f97a5, 0x8}, 0xc00021ddd0)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig.go:197 +0x6b
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc0000e4540)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:84 +0x70
testing.tRunner(0xc0000e4540, 0xc0000d14f0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 1 [chan receive]:
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1891 +0x451
testing.tRunner(0xc0001108c0, 0xc000159c70)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1940 +0x123
testing.runTests(0xc000012108, {0x96ca00, 0x15, 0x15}, {0x7?, 0xc000016c40?, 0x973900?})
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2475 +0x4b4
testing.(*M).Run(0xc00007eaa0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2337 +0x63a
main.main()
	_testmain.go:85 +0x9b

goroutine 11 [chan receive]:
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1891 +0x451
testing.tRunner(0xc000111500, 0x7119a8)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1940 +0x123
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 12 [chan receive]:
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1891 +0x451
testing.tRunner(0xc000111880, 0x7119c8)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1940 +0x123
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 48 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000e56c0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000e56c0)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000e56c0, 0xc0000b8b40)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 15 [runnable]:
github.com/goccy/go-yaml/token.String(...)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/token/token.go:886
github.com/goccy/go-yaml/token.New({0x0, 0x0}, {0x0, 0x0}, 0xc00028b5c0)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/token/token.go:760 +0x185
github.com/goccy/go-yaml.(*Encoder).encodeStruct(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca860?, 0xc0002cab70?, 0x16?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:874 +0xbf
github.com/goccy/go-yaml.(*Encoder).encodeValue(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca860?, 0xc0002cab70?, 0x6ce160?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:493 +0x68a
github.com/goccy/go-yaml.(*Encoder).encodeValue(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6a6480?, 0xc0002cab70?, 0x98?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:467 +0x43e
github.com/goccy/go-yaml.(*Encoder).encodeMap(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6b0aa0?, 0xc0002ca500?, 0x6b0aa0?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:694 +0x457
github.com/goccy/go-yaml.(*Encoder).encodeValue(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6b0aa0?, 0xc0002ca500?, 0x6b0aa0?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:498 +0x3cb
github.com/goccy/go-yaml.(*Encoder).encodeStruct(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca920?, 0xc0002ca4e0?, 0x16?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:907 +0x5ec
github.com/goccy/go-yaml.(*Encoder).encodeValue(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca920?, 0xc0002ca4e0?, 0xc000041208?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:493 +0x68a
github.com/goccy/go-yaml.(*Encoder).encodeValue(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca9e0?, 0xc0002ca4e0?, 0x7f5e1314cf30?}, 0x1)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:467 +0x43e
github.com/goccy/go-yaml.(*Encoder).EncodeToNodeContext(0xc00029a1e0, {0x7671c8, 0x9942c0}, {0x6ca9e0, 0xc0002ca4e0})
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:128 +0x231
github.com/goccy/go-yaml.(*Encoder).EncodeContext(0xc00029a1e0, {0x7671c8?, 0x9942c0?}, {0x6ca9e0?, 0xc0002ca4e0?})
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/encode.go:91 +0x30
github.com/goccy/go-yaml.MarshalContext({0x7671c8, 0x9942c0}, {0x6ca9e0, 0xc0002ca4e0}, {0x0, 0x0, 0x0})
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/yaml.go:156 +0x1b3
github.com/goccy/go-yaml.MarshalWithOptions(...)
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/yaml.go:150
github.com/goccy/go-yaml.Marshal({0x6ca9e0?, 0xc0002ca4e0?})
	/home/runner/go/pkg/mod/github.com/goccy/go-yaml@v1.19.2/yaml.go:145 +0x39
github.com/docker/cagent/pkg/userconfig.(*Config).saveTo(0xc0002ca4e0, {0xc00028ca00, 0x3b})
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig.go:154 +0xac
github.com/docker/cagent/pkg/userconfig.loadFrom({0xc00028ca00, 0x3b}, {0xc00028ca40, 0x3c})
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig.go:74 +0x7f
github.com/docker/cagent/pkg/userconfig.TestConfig_MigrateFromLegacy(0xc000172380)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:185 +0x18a
testing.tRunner(0xc000172380, 0x711958)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 19 [runnable]:
syscall.Syscall(0x4a, 0x8, 0x0, 0x0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/syscall/syscall_linux.go:74 +0x25
syscall.Fsync(0xc0000ae690?)
	/opt/hostedtoolcache/go/1.25.5/x64/src/syscall/zsyscall_linux_amd64.go:463 +0x25
internal/poll.(*FD).Fsync.func1(...)
	/opt/hostedtoolcache/go/1.25.5/x64/src/internal/poll/fd_fsync_posix.go:18
internal/poll.ignoringEINTR(...)
	/opt/hostedtoolcache/go/1.25.5/x64/src/internal/poll/fd_posix.go:74
internal/poll.(*FD).Fsync(0xc0000aa258?)
	/opt/hostedtoolcache/go/1.25.5/x64/src/internal/poll/fd_fsync_posix.go:17 +0xe7
os.(*File).Sync(0xc0000aa258)
	/opt/hostedtoolcache/go/1.25.5/x64/src/os/file_posix.go:166 +0x3b
github.com/natefinch/atomic.WriteFile({0xc0000a6940, 0x40}, {0x765ca0, 0xc000308990})
	/home/runner/go/pkg/mod/github.com/natefinch/atomic@v1.0.1/atomic.go:43 +0x30c
github.com/docker/cagent/pkg/userconfig.(*Config).saveTo(0xc000095c80, {0xc0000a6940, 0x40})
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig.go:159 +0x165
github.com/docker/cagent/pkg/userconfig.loadFrom({0xc0000a6940, 0x40}, {0xc0000ae3c0, 0x41})
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig.go:74 +0x7f
github.com/docker/cagent/pkg/userconfig.TestConfig_MigrateWhenConfigEmpty(0xc000172e00)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:253 +0x22c
testing.tRunner(0xc000172e00, 0x711968)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 35 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000828c0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc0000828c0)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc0000828c0, 0xc0000d0ff0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 36 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc000082c40)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc000082c40)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc000082c40, 0xc0000d1090)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 37 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc000082fc0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc000082fc0)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc000082fc0, 0xc0000d1130)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 38 [runnable]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc000083340)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc000083340)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc000083340, 0xc0000d11d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 39 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000836c0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc0000836c0)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc0000836c0, 0xc0000d1270)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 40 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc000083a40)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestConfig_SetAlias_Validation.func1(0xc000083a40)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:83 +0x2a
testing.tRunner(0xc000083a40, 0xc0000d1310)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 42 [runnable]:
fmt.(*pp).fmtFloat(0xc000288000?, 0x3eb2fde729a2ef36?, 0x40?, 0x66?)
	/opt/hostedtoolcache/go/1.25.5/x64/src/fmt/print.go:452 +0xd1
fmt.(*pp).printArg(0xc000288000, {0x698e60, 0xc0000156d0}, 0x66)
	/opt/hostedtoolcache/go/1.25.5/x64/src/fmt/print.go:713 +0x325
fmt.(*pp).doPrintf(0xc000288000, {0x6f8be3, 0x5}, {0xc00005fd28, 0x1, 0x1})
	/opt/hostedtoolcache/go/1.25.5/x64/src/fmt/print.go:1173 +0x989
fmt.Sprintf({0x6f8be3, 0x5}, {0xc0000e3528, 0x1, 0x1})
	/opt/hostedtoolcache/go/1.25.5/x64/src/fmt/print.go:239 +0x53
testing.fmtDuration(0xc0000e3588?)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:877 +0x9c
testing.(*T).report(0xc0000e41c0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2390 +0x47
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1917 +0x5cf
testing.tRunner(0xc0000e41c0, 0xc0000d1450)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1940 +0x123
created by testing.(*T).Run in goroutine 11
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 49 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000e5880)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000e5880)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000e5880, 0xc0000b8bc0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 50 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000e5c00)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000e5c00)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000e5c00, 0xc0000b8c20)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 51 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000ea000)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000ea000)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000ea000, 0xc0000b8ca0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 52 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000ea380)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000ea380)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000ea380, 0xc0000b8d00)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 53 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000ea700)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000ea700)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000ea700, 0xc0000b8d40)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 54 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000eaa80)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000eaa80)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000eaa80, 0xc0000b8da0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 55 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000eae00)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000eae00)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000eae00, 0xc0000b8e00)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 56 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000eb180)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000eb180)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000eb180, 0xc0000b8e60)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 57 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000eb500)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000eb500)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000eb500, 0xc0000b8ec0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 58 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000eb880)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000eb880)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000eb880, 0xc0000b8f20)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 59 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000ebc00)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000ebc00)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000ebc00, 0xc0000b8f80)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 60 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000f6000)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000f6000)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000f6000, 0xc0000b8fe0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 61 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000f6380)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000f6380)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000f6380, 0xc0000b9040)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 62 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000f6700)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000f6700)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000f6700, 0xc0000b90a0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465

goroutine 63 [chan receive]:
testing.(*testState).waitParallel(0xc0001442d0)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:2116 +0xaa
testing.(*T).Parallel(0xc0000f6a80)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1709 +0x245
github.com/docker/cagent/pkg/userconfig.TestValidateAliasName.func1(0xc0000f6a80)
	/home/runner/work/cagent/cagent/pkg/userconfig/userconfig_test.go:121 +0x36
testing.tRunner(0xc0000f6a80, 0xc0000b9120)
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 12
	/opt/hostedtoolcache/go/1.25.5/x64/src/testing/testing.go:1997 +0x465
FAIL	github.com/docker/cagent/pkg/userconfig	0.015s
?   	github.com/docker/cagent/pkg/version	[no test files]
FAIL

[rumpl]

We should either make the userconfig thread safe, or change our tests to not run in parallel

[Pnkcaht]

I'll look into it and send a pull request

[Pnkcaht]

Details

@rumpl

• The issue was caused by concurrent access to Config.Aliases.
• I added a mutex to Config and synchronized all alias reads and writes.
• No behavior or public API changes were introduced.
• Validated by running the userconfig test suite multiple times without flakiness.

PR: #1456

thanks for the report :) 👍🏻