net: TestUDPServer failures

[gopherbot]

#!watchflakes
post <- pkg == "net" && test == "TestUDPServer"

Bug automatically created to track these flakes.

— watchflakes

[gopherbot]

Found new matching flaky dashboard failures for:

#!watchflakes
post <- pkg == "net" && test == "TestUDPServer"

2022-08-11 20:16 windows-amd64-2016 go@502b6057 net.TestUDPServer (log)

--- FAIL: TestUDPServer (0.00s)
    server_test.go:255: skipping udp :0<-127.0.0.1 test
    server_test.go:255: skipping udp 0.0.0.0:0<-127.0.0.1 test
    server_test.go:255: skipping udp [::ffff:0.0.0.0]:0<-127.0.0.1 test
    server_test.go:255: skipping udp [::]:0<-::1 test
    server_test.go:255: skipping udp :0<-::1 test
    server_test.go:255: skipping udp 0.0.0.0:0<-::1 test
    server_test.go:255: skipping udp [::ffff:0.0.0.0]:0<-::1 test
    server_test.go:255: skipping udp [::]:0<-127.0.0.1 test
    server_test.go:255: skipping udp :0<-127.0.0.1 test
    server_test.go:255: skipping udp 0.0.0.0:0<-127.0.0.1 test
    server_test.go:255: skipping udp [::ffff:0.0.0.0]:0<-127.0.0.1 test
    server_test.go:255: skipping udp [::]:0<-::1 test
    server_test.go:255: skipping udp :0<-::1 test
    server_test.go:255: skipping udp 0.0.0.0:0<-::1 test
    server_test.go:255: skipping udp [::ffff:0.0.0.0]:0<-::1 test
    server_test.go:255: skipping udp [::]:0<-127.0.0.1 test
    server_test.go:308: #17: read 0; want 15
    server_test.go:255: skipping udp4 :0<-127.0.0.1 test
    server_test.go:255: skipping udp4 0.0.0.0:0<-127.0.0.1 test
    server_test.go:255: skipping udp4 [::ffff:0.0.0.0]:0<-127.0.0.1 test
    server_test.go:255: skipping udp6 :0<-::1 test
    server_test.go:255: skipping udp6 [::]:0<-::1 test

— watchflakes

[rsc]

Stopped.

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net" && test == "TestUDPServer"

2023-05-19 13:42 darwin-amd64-longtest go@ade3f3f5 net.TestUDPServer (log)

panic: test timed out after 15m0s
running tests:
	TestUDPServer (14m56s)

runtime.gopark(0xc00014bcb0?, 0x100d885?, 0xc0?, 0x8d?, 0x50?)
	/tmp/buildlet/go/src/runtime/proc.go:398 +0xce fp=0xc00014bc48 sp=0xc00014bc28 pc=0x103976e
runtime.chanrecv(0xc00050f0e0, 0xc00014be78, 0x1)
	/tmp/buildlet/go/src/runtime/chan.go:583 +0x3cd fp=0xc00014bcc0 sp=0xc00014bc48 pc=0x1006ded
runtime.chanrecv2(0x1282d91?, 0x12842fa?)
	/tmp/buildlet/go/src/runtime/chan.go:447 +0x12 fp=0xc00014bce8 sp=0xc00014bcc0 pc=0x1006a12
net.TestUDPServer(0xc000345380)
	/tmp/buildlet/go/src/net/server_test.go:307 +0xcba fp=0xc00014bf70 sp=0xc00014bce8 pc=0x11de3fa
testing.tRunner(0xc000345380, 0x129a180)

— watchflakes