add error channel

cmd/dep/status.go

@@ -363,9 +363,12 @@ func runStatusAll(ctx *dep.Ctx, out outputter, p *dep.Project, sm gps.SourceMana
 
 		logger.Println("Checking upstream projects:")
 
-		// BasicStatus channel
+		// BasicStatus channel to collect all the BasicStatus
 		bsCh := make(chan *BasicStatus, len(slp))
 
+		// Error channel to collect all the errors
+		errorCh := make(chan error, len(slp))
+
 		var wg sync.WaitGroup
 
 		for i, proj := range slp {
@@ -387,7 +390,7 @@ func runStatusAll(ctx *dep.Ctx, out outputter, p *dep.Project, sm gps.SourceMana
 					ptr, err := sm.ListPackages(proj.Ident(), proj.Version())
 
 					if err != nil {
-						// return digestMismatch, hasMissingPkgs, errors.Wrapf(err, "analysis of %s package failed", proj.Ident().ProjectRoot)
+						errorCh <- err
 					}
 
 					prm, _ := ptr.ToReachMap(true, false, false, nil)
@@ -452,8 +455,18 @@ func runStatusAll(ctx *dep.Ctx, out outputter, p *dep.Project, sm gps.SourceMana
 
 		wg.Wait()
 		close(bsCh)
+		close(errorCh)
 		logger.Println()
 
+		if len(errorCh) > 0 {
+			bsErr := errors.New("failed to fetch updates")
+			for err := range errorCh {
+				ctx.Err.Println(err.Error())
+			}
+			ctx.Err.Println()
+			return digestMismatch, hasMissingPkgs, bsErr
+		}
+
 		// A map of ProjectRoot and *BasicStatus. This is used in maintain the
 		// order of BasicStatus in output by collecting all the BasicStatus and
 		// then using them in order.