Mark span status as error when fatal error occurs.

Before this only recorded errors instead of setting the span status,
which makes it harder to dig through.
Now an error that bubbles is reflected in the span status.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

build/build.go

@@ -217,8 +217,7 @@ func resolveDrivers(ctx context.Context, drivers []DriverInfo, auth Auth, opt ma
 	}
 
 	err = eg.Wait()
-	span.RecordError(err)
-	span.End()
+	tracing.FinishWithError(span, err)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -684,8 +683,7 @@ func Build(ctx context.Context, drivers []DriverInfo, opt map[string]Options, do
 			eg.Go(func() (err error) {
 				defer func() {
 					if span != nil {
-						span.RecordError(err)
-						span.End()
+						tracing.FinishWithError(span, err)
 					}
 				}()
 				pw := progress.WithPrefix(w, "default", false)