cmd/cue/cmd: remove exit code from test output

May be different on different OS-es.

Change-Id: I10b41040558d6062e00c830005be13d11b9ae036
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/2281
Reviewed-by: Marcel van Lohuizen <mpvl@google.com>
diff --git a/cmd/cue/cmd/common_test.go b/cmd/cue/cmd/common_test.go
index 49b6f87..3399c63 100644
--- a/cmd/cue/cmd/common_test.go
+++ b/cmd/cue/cmd/common_test.go
@@ -21,6 +21,7 @@
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"regexp"
 	"testing"
 
 	"cuelang.org/go/cue/errors"
@@ -96,6 +97,8 @@
 			})
 			g.Go(func() error {
 				bOut, err = ioutil.ReadAll(rOut)
+				re := regexp.MustCompile(`exit status \d`)
+				bOut = re.ReplaceAll(bOut, []byte("non-zero exist code"))
 				return err
 			})
 			if err := g.Wait(); err != nil {
diff --git a/cmd/cue/cmd/testdata/tasks/cmd_errcode.out b/cmd/cue/cmd/testdata/tasks/cmd_errcode.out
index b42cb26..08e9a2b 100644
--- a/cmd/cue/cmd/testdata/tasks/cmd_errcode.out
+++ b/cmd/cue/cmd/testdata/tasks/cmd_errcode.out
@@ -1 +1 @@
-command "ls --badflags" failed: exit status 1
+command "ls --badflags" failed: non-zero exist code