// the original working directory.
			panic(err)
		}
	}()

	// Note the deferred Wait must be called after the deferred close(done),
	// to ensure the N goroutines have been released even if the main goroutine
	// calls Fatalf. It must be called before the Chdir back to the original
	// directory, and before the deferred deletion implied by TempDir,

//
// Deprecated: Use [Request.WithContext] to create a request with a
// cancelable context instead. CancelRequest cannot cancel HTTP/2
// requests. This may become a no-op in a future release of Go.
func (t *Transport) CancelRequest(req *Request) {
	t.reqMu.Lock()
	cancel := t.reqCanceler[req]
	t.reqMu.Unlock()
	if cancel != nil {
		cancel(errRequestCanceled)
	}
}

//