==================
WARNING: DATA RACE
Read by goroutine 13:
  runtime.mapiternext()
      /tmp/workdir/go/src/runtime/hashmap.go:621 +0x0
  net/http/fcgi.(*child).cleanUp()
      /tmp/workdir/go/src/net/http/fcgi/child.go:292 +0x136
  net/http/fcgi.(*child).serve()
      /tmp/workdir/go/src/net/http/fcgi/child.go:151 +0x156

Previous write by goroutine 14:
  runtime.mapdelete()
      /tmp/workdir/go/src/runtime/hashmap.go:511 +0x0
  net/http/fcgi.(*child).serveRequest()
      /tmp/workdir/go/src/net/http/fcgi/child.go:272 +0x605

Goroutine 13 (running) created at:
  net/http/fcgi.TestChildServeCleansUp()
      /tmp/workdir/go/src/net/http/fcgi/fcgi_test.go:252 +0x6e2
  testing.tRunner()
      /tmp/workdir/go/src/testing/testing.go:455 +0xdc

Goroutine 14 (finished) created at:
  net/http/fcgi.(*child).handleRecord()
      /tmp/workdir/go/src/net/http/fcgi/child.go:221 +0x14c6
  net/http/fcgi.(*child).serve()
      /tmp/workdir/go/src/net/http/fcgi/child.go:153 +0x17d
==================
Found 1 data race(s)
FAIL    net/http/fcgi   1.019s