net/http: TestOnlyWriteTimeout failures

[gopherbot]

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout" && `timeout waiting for .* error`

Issue created automatically to collect these failures.

Example (log):

2023/01/09 20:31:43 http: TLS handshake error from 127.0.0.1:50632: read tcp 127.0.0.1:50625->127.0.0.1:50632: use of closed network connection
2023/01/09 20:31:49 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc0001f9938 127.0.0.1:50815 in state active
2023/01/09 20:31:49 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc00017e090 127.0.0.1:50819 in state active
--- FAIL: TestOnlyWriteTimeout (15.12s)
    serve_test.go:968: timeout waiting for Get error

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout"

2023-01-09 21:17 darwin-amd64-nocgo go@071a1ed0 net/http.TestOnlyWriteTimeout (log)

2023/01/09 20:31:43 http: TLS handshake error from 127.0.0.1:50632: read tcp 127.0.0.1:50625->127.0.0.1:50632: use of closed network connection
2023/01/09 20:31:49 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc0001f9938 127.0.0.1:50815 in state active
2023/01/09 20:31:49 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc00017e090 127.0.0.1:50819 in state active
--- FAIL: TestOnlyWriteTimeout (15.12s)
    serve_test.go:968: timeout waiting for Get error

— watchflakes

[bcmills]

(attn @neild)

The failure mode — a darwin platform and an error matching timeout waiting for .* error — is strikingly similar to #57599.

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout"

2023-01-09 21:17 darwin-amd64-12_0 go@071a1ed0 net/http.TestOnlyWriteTimeout (log)

1 second passes in backend, proxygone= false
1 second passes in backend, proxygone= false
2023/01/09 20:36:36 http: TLS handshake error from 127.0.0.1:51093: read tcp 127.0.0.1:51092->127.0.0.1:51093: read: connection reset by peer
--- FAIL: TestOnlyWriteTimeout (13.03s)
    serve_test.go:968: timeout waiting for Get error

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout" && `timeout waiting for .* error`

2023-02-24 07:13 darwin-amd64-nocgo go@ddb423a7 net/http.TestOnlyWriteTimeout (log)

2023/02/23 23:28:55 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc00047e7d8 127.0.0.1:50627 in state active
--- FAIL: TestOnlyWriteTimeout (0.00s)
    --- FAIL: TestOnlyWriteTimeout/h1 (22.39s)
        serve_test.go:1008: timeout waiting for Get error
2023/02/23 23:29:04 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *tls.Conn 0xc000d6ca80 127.0.0.1:50895 in state idle

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout" && `timeout waiting for .* error`

2023-02-27 19:59 darwin-amd64-13 go@ce025d90 net/http.TestOnlyWriteTimeout (log)

2023/02/28 06:03:20 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc0005080d8 127.0.0.1:50443 in state active
2023/02/28 06:03:20 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc0000a8068 127.0.0.1:50447 in state active
--- FAIL: TestOnlyWriteTimeout (11.88s)
    serve_test.go:968: timeout waiting for Get error

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "net/http" && test == "TestOnlyWriteTimeout" && `timeout waiting for .* error`

2023-04-03 20:02 darwin-amd64-nocgo go@7a5787f3 net/http.TestOnlyWriteTimeout (log)

2023/04/03 15:21:25 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc000012008 127.0.0.1:50764 in state active
--- FAIL: TestOnlyWriteTimeout (24.85s)
    serve_test.go:968: timeout waiting for Get error
2023/04/03 15:21:48 httptest.Server blocked in Close after 5 seconds, waiting for connections:
  *net.TCPConn 0xc0005b8038 127.0.0.1:50880 in state active

— watchflakes

[bcmills]

This failure mode is no longer possible after CL 476035. It may still occur on the release branches, though.