t.Fatalf("Server logs count mismatch\ngot %d, want %d\n\nGot\n%s\n", g, w, blob)
			}

			lastSpuriousLine := <-lastLine
			firstSpuriousLine := lastSpuriousLine - 3
			// Now ensure that the regexes match exactly.
			//      "http: superfluous response.WriteHeader call from <fn>.func\d.\d (<curFile>:lastSpuriousLine-[1, 3]"
			for i, logEntry := range logEntries {
				wantLine := firstSpuriousLine + i