Fix

cmd/build/build-image.go

@@ -247,7 +247,7 @@ func (this *buildImage) createAnnotations(ctx context.Context, e edition, additi
 		}
 	}
 
-	return nil, err
+	return result, err
 }
 
 func (this *buildImage) createdMerged(ctx context.Context, e edition, as buildArtifacts) (result *buildArtifact, _ error) {
@@ -263,7 +263,7 @@ func (this *buildImage) createdMerged(ctx context.Context, e edition, as buildAr
 	}
 
 	var manifest gcv1.ImageIndex = empty.Index
-	mutate.IndexMediaType(manifest, types.DockerManifestList)
+	manifest = mutate.IndexMediaType(manifest, types.DockerManifestList)
 	manifest = mutate.Annotations(manifest, annotations).(gcv1.ImageIndex)
 
 	var adds []mutate.IndexAddendum

cmd/build/build.go

@@ -363,7 +363,7 @@ func (this *build) publish(ctx context.Context, as buildArtifacts) error {
 		}
 	}
 
-	ll := l.With("duration", time.Now().Sub(start).Truncate(time.Millisecond))
+	ll := l.With("duration", time.Since(start).Truncate(time.Millisecond))
 	if l.IsDebugEnabled() {
 		ll.Info("publish release...DONE!")
 	} else {

cmd/build/repo-releases.go

@@ -134,7 +134,7 @@ func (this *repoRelease) uploadAsset(ctx context.Context, name, mediaType, label
 		return fail(err)
 	}
 
-	ll := l.With("duration", time.Now().Sub(start).Truncate(time.Millisecond))
+	ll := l.With("duration", time.Since(start).Truncate(time.Millisecond))
 	if l.IsDebugEnabled() {
 		ll.Info("uploading asset... DONE!")
 	} else {