x/build/cmd/watchflakes, x/net/http2: flaky test timeout

[gopherbot]

#!watchflakes
post <- pkg == "golang.org/x/net/http2" && test == "" && `panic: test timed out`

Bug automatically created to track these flakes.

— watchflakes

[gopherbot]

Found new matching flaky dashboard failures for:

#!watchflakes
post <- pkg == "golang.org/x/net/http2" && test == "" && `panic: test timed out`

2022-09-19 23:24 darwin-arm64-11 net@f2f64ebc go@1e7e160d golang.org/x/net/http2 (log)

panic: test timed out after 10m0s

goroutine 9181 [running]:
testing.(*M).startAlarm.func1()
	/tmp/buildlet/go/src/testing/testing.go:2083 +0x88
created by time.goFunc
	/tmp/buildlet/go/src/time/sleep.go:176 +0x38

2022-09-19 23:24 darwin-arm64-12 net@f2f64ebc go@1e7e160d golang.org/x/net/http2 (log)

panic: test timed out after 10m0s

goroutine 8406 [running]:
testing.(*M).startAlarm.func1()
	/tmp/buildlet/go/src/testing/testing.go:2083 +0x88
created by time.goFunc
	/tmp/buildlet/go/src/time/sleep.go:176 +0x38

2022-09-19 23:24 linux-amd64-wsl net@f2f64ebc go@1e7e160d golang.org/x/net/http2 (log)

panic: test timed out after 10m0s

goroutine 8823 [running]:
testing.(*M).startAlarm.func1()
	/tmp/workdir-host-linux-amd64-wsl/go/src/testing/testing.go:2083 +0x8e
created by time.goFunc
	/tmp/workdir-host-linux-amd64-wsl/go/src/time/sleep.go:176 +0x32

2022-09-19 23:24 linux-amd64-wsl net@f2f64ebc go@cf53990b golang.org/x/net/http2 (log)

panic: test timed out after 10m0s

goroutine 8726 [running]:
testing.(*M).startAlarm.func1()
	/tmp/workdir-host-linux-amd64-wsl/go/src/testing/testing.go:2083 +0x8e
created by time.goFunc
	/tmp/workdir-host-linux-amd64-wsl/go/src/time/sleep.go:176 +0x32

— watchflakes

[rsc]

This is a bug in deflaking - the entire commit net@f2f64ebc is broken.