I'm trying to run squeak-ci on OS X machines (courtesy of the good
folk at Travis CI), and am trying to debug a build failure. The full
log is here - https://travis-ci.org/squeak-smalltalk/squeak-ci/jobs/105019185
- but the juicy bit is this:

spawning command 0 with timeout 600 seconds: unset DISPLAY &&
"/var/folders/gw/_2jq29095y7b__wtby9dg_5h0000gn/T/d20160126-547-19ihlo2/Contents/MacOS/Squeak
VM Opt" "-vm-display-null"
"/Users/travis/build/squeak-smalltalk/squeak-ci/target/TrunkImage.image"
"../save-image.st"
(Command started with PID 556)
sh: /var/folders/gw/_2jq29095y7b__wtby9dg_5h0000gn/T/d20160126-547-19ihlo2/Contents/MacOS/Squeak
VM Opt: Permission denied
rake aborted!
Process 556 failed with exit status 126

Would some kind soul please do the following, and report the results?
* git clone https://github.com/squeak-smalltalk/squeak-ci
* cd squeak-ci
* comment out this line:
https://github.com/squeak-smalltalk/squeak-ci/blob/master/lib/squeak-ci/build.rb#L48
* bundle install
* bundle exec rake

I'm particularly interested in whether this works on your machine.
Hopefully it fails in the same way, giving us something debuggable. If
so, what are the permissions of "Squeak VM Opt" ?

frank