Merge pull request #9738 from chrisroberts/e-trace-report

Disable report on exception by default

bin/vagrant

@@ -5,6 +5,11 @@
 # initializing which have historically resulted in stack traces.
 Signal.trap("INT") { abort }
 
+# Disable exception reporting by default if available
+if Thread.respond_to?(:report_on_exception=)
+  Thread.report_on_exception = false
+end
+
 # Split arguments by "--" if its there, we'll recombine them later
 argv = ARGV.dup
 argv_extra = []