Print the new bug-report URL.

lib/src/command_runner.dart

Index: lib/src/command_runner.dart
diff --git a/lib/src/command_runner.dart b/lib/src/command_runner.dart
index 1addc1528c898bd92bf88ec641b3fa6b68c81cc9..ca6bb87a4d599df9fa17aaaa5fffaa9a42dca9d9 100644
--- a/lib/src/command_runner.dart
+++ b/lib/src/command_runner.dart
@@ -144,7 +144,7 @@ This is an unexpected error. Please run
 
     pub --trace ${options.arguments.map(protectArgument).join(' ')}
 
-and include the results in a bug report on http://dartbug.com/new.
+and include the logs in an issue on https://github.com/dart-lang/pub/issues/new
 """);
       }