Request bug report if fletch crashes

pkg/fletchc/lib/src/please_report_crash.dart

+// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE.md file.
+
+library fletchc.please_report_crash;
+
+bool crashReportRequested = false;
+
+// TODO(ahe): Include build ID.
+const String requestBugReportOnCompilerCrashMessage = """
+The Fletch compiler is broken.
+
+When compiling the above element, the compiler crashed. It is not
+possible to tell if this is caused by a problem in your program or
+not. Regardless, the compiler should not crash.
+
+The Fletch team would greatly appreciate if you would take a moment to
+report this problem at https://github.com/dart-lang/fletch/issues/new
+
+Please include the following information:
+
+* the name and version of your operating system
+
+* the entire message you see here (including the full stack trace
+  below as well as the source location above)
+""";
+
+// TODO(ahe): Include build ID.
+const String requestBugReportOnOtherCrashMessage = """
+The Fletch program is broken and has crashed.
+
+The Fletch team would greatly appreciate if you would take a moment to
+report this problem at https://github.com/dart-lang/fletch/issues/new
+
+Please include the following information:
+
+* the name and version of your operating system
+
+* the entire message you see here (including the full stack trace below)
+""";