c.Check(exited, check.Equals, 0)
c.Check(stdout.String(), check.Matches, `arvados-client dev \(go[0-9\.]+\)\n`)
c.Check(stderr.String(), check.Equals, "")
c.Check(exited, check.Equals, 0)
c.Check(stdout.String(), check.Matches, `arvados-client dev \(go[0-9\.]+\)\n`)
c.Check(stderr.String(), check.Equals, "")