c.Assert(err, IsNil)
cr.RunArvMount = func([]string, string) (*exec.Cmd, error) { return nil, nil }
cr.MkArvClient = func(token string) (IArvadosClient, IKeepClient, *arvados.Client, error) {
c.Assert(err, IsNil)
cr.RunArvMount = func([]string, string) (*exec.Cmd, error) { return nil, nil }
cr.MkArvClient = func(token string) (IArvadosClient, IKeepClient, *arvados.Client, error) {