if (!stderr.equals(output.getStderr())) {
throw new Exception("getStderr() returned '" + output.getStderr() + "', expected '" + stderr + "'");
}
try {
output.shouldContain(stdout);
output.stdoutShouldContain(stdout);
output.shouldContain(stderr);
output.stderrShouldContain(stderr);
} catch (RuntimeException e) {
throw new Exception("shouldContain() failed", e);