t.Errorf("Wait error = %v; want exit status 1", err)
		}
	})
}

// TestConcurrentExec is a regression test for https://go.dev/issue/61080.
//
// Forking multiple child processes concurrently would sometimes hang on darwin.
// (This test hung on a gomote with -count=100 after only a few iterations.)
func TestConcurrentExec(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())