net: TestLookupContextCancel failure with nil-error conversion panic on windows-arm64-10 #51084
Description
--- FAIL: TestLookupContextCancel (0.00s)
panic: interface conversion: error is nil, not *net.DNSError [recovered]
panic: interface conversion: error is nil, not *net.DNSError
goroutine 185 [running]:
panic({0x7ff6c6976fa0, 0x4000257920})
C:/workdir/go/src/runtime/panic.go:941 +0x3d8 fp=0x400006db50 sp=0x400006da90 pc=0x7ff6c67b6658
testing.tRunner.func1.2({0x7ff6c6976fa0, 0x4000257920})
C:/workdir/go/src/testing/testing.go:1389 +0x1c8 fp=0x400006dc00 sp=0x400006db50 pc=0x7ff6c68651d8
testing.tRunner.func1()
C:/workdir/go/src/testing/testing.go:1392 +0x380 fp=0x400006dd70 sp=0x400006dc00 pc=0x7ff6c6864d40
runtime.deferCallSave(0x400006de50, 0x40000c9f88?)
C:/workdir/go/src/runtime/panic.go:750 +0x94 fp=0x400006dd80 sp=0x400006dd70 pc=0x7ff6c67b6224
runtime.runOpenDeferFrame(0x4000064050?, 0x4000064000)
C:/workdir/go/src/runtime/panic.go:723 +0x1b8 fp=0x400006ddd0 sp=0x400006dd80 pc=0x7ff6c67b6048
panic({0x7ff6c6976fa0, 0x4000257920})
C:/workdir/go/src/runtime/panic.go:838 +0x20c fp=0x400006de90 sp=0x400006ddd0 pc=0x7ff6c67b648c
runtime.panicdottypeE(...)
C:/workdir/go/src/runtime/iface.go:262
runtime.panicdottypeI(0x7ff6c6b33900?, 0x7ff6c697a2c0, 0x7ff6c6978340)
C:/workdir/go/src/runtime/iface.go:272 +0x78 fp=0x400006dec0 sp=0x400006de90 pc=0x7ff6c6789618
net.TestLookupContextCancel(0x40001a4ea0)
C:/workdir/go/src/net/lookup_test.go:891 +0x230 fp=0x400006df60 sp=0x400006dec0 pc=0x7ff6c69031b0
testing.tRunner(0x40001a4ea0, 0x7ff6c69bd7a0)
C:/workdir/go/src/testing/testing.go:1439 +0x110 fp=0x400006dfb0 sp=0x400006df60 pc=0x7ff6c68648f0
testing.(*T).Run.func1()
C:/workdir/go/src/testing/testing.go:1486 +0x30 fp=0x400006dfd0 sp=0x400006dfb0 pc=0x7ff6c6865660
runtime.goexit()
C:/workdir/go/src/runtime/asm_arm64.s:1259 +0x4 fp=0x400006dfd0 sp=0x400006dfd0 pc=0x7ff6c67e62b4
created by testing.(*T).Run
C:/workdir/go/src/testing/testing.go:1486 +0x328
greplogs --dashboard -md -l -e 'FAIL: TestLookupContextCancel .*\npanic: interface conversion'