Do not expose internal exception.

Author: isoos

pkg/pub_worker/lib/src/analyze.dart

@@ -161,11 +161,10 @@ Future<void> _analyzePackage(
             .transform(LineSplitter())
             .forEach(log.writeln),
         pana.exitOrTimeout(_panaTimeout, () {
-          log.writeln('TIMEOUT: pana sending SIGTERM/SIGKILL');
+          log.writeln('TIMEOUT: sending SIGTERM/SIGKILL to pana.');
         }),
       ]).catchError((e, st) {
-        log.writeln('Error waiting for pana process: $e');
-        log.writeln(st);
+        log.writeln('TIMEOUT: sending SIGKILL to pana.');
         // kill the process if not already killed
         try {
           pana.kill(ProcessSignal.sigkill);