There are two places that log failure to start, tweak the message to tell

testing/iossim/iossim.mm

Index: testing/iossim/iossim.mm
===================================================================
--- testing/iossim/iossim.mm	(revision 150090)
+++ testing/iossim/iossim.mm	(working copy)
@@ -668,7 +668,7 @@
   if (started) {
     [[NSRunLoop mainRunLoop] run];
   } else {
-    LogError(@"Simulator failed to start:  \"%@\" (%@:%ld)",
+    LogError(@"Simulator failed request to start:  \"%@\" (%@:%ld)",

[rohitrao (ping after 24h), 2012/08/06 16:21:55]

I don't understand what this new error message means or how it's different from
the old one.  This is enough to dedup, but can the message itself be more
descriptive?

If this makes sense to both you and Lane, feel free to ignore.

[TVL, 2012/08/06 16:23:27]

The other case also just had "Simulator failed to start:", so this way the
strings are just enough different you can tell in logs.

              [error localizedDescription],
              [error domain], static_cast<long int>([error code]));
   }