net/http: TestKeepAliveFinalChunkWithEOF failures

[gopherbot]

#!watchflakes
post <- pkg == "net/http" && test == "TestKeepAliveFinalChunkWithEOF" && `connection not reused`

Issue created automatically to collect these failures.

Example (log):

--- FAIL: TestKeepAliveFinalChunkWithEOF (0.15s)
    serve_test.go:1220: connection not reused
2022/11/30 11:10:56 http: TLS handshake error from 127.0.0.1:51048: EOF
2022/11/30 11:10:56 http: TLS handshake error from 127.0.0.1:51049: EOF

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

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

2022-11-30 18:33 darwin-amd64-race go@9f443332 net/http.TestKeepAliveFinalChunkWithEOF (log)

--- FAIL: TestKeepAliveFinalChunkWithEOF (0.15s)
    serve_test.go:1220: connection not reused
2022/11/30 11:10:56 http: TLS handshake error from 127.0.0.1:51048: EOF
2022/11/30 11:10:56 http: TLS handshake error from 127.0.0.1:51049: EOF

— watchflakes

[bcmills]

(CC @neild; this is in the cluster of “connection reuse” failures)