From 3615827f0e42389633c63050302ab20b3dd61bc9 Mon Sep 17 00:00:00 2001
From: Adam Barth <abarth@chromium.org>
Date: Thu, 7 Jan 2016 09:56:44 -0800
Subject: [PATCH] `flutter start` crashes when port 8181 is in use

Catch the error and log a warning.

Fixes #1050
---
 packages/flutter_tools/lib/src/device.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index 36409fe630..b8cdb6eaa2 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -772,7 +772,11 @@ class AndroidDevice extends Device {
   void _forwardObservatoryPort() {
     // Set up port forwarding for observatory.
     String portString = 'tcp:$_observatoryPort';
-    runCheckedSync(adbCommandForDevice(['forward', portString, portString]));
+    try {
+      runCheckedSync(adbCommandForDevice(['forward', portString, portString]));
+    } catch (e) {
+      logging.warning('Unable to forward observatory port ($_observatoryPort):\n$e');
+    }
   }
 
   bool startBundle(AndroidApk apk, String bundlePath, {