### Please describe the problem.

git-annex exists with "illegal hardware instruction" on OSX

### What steps will reproduce the problem?

git annex webapp

### What version of git-annex are you using? On what operating system?

git annex 5.20131230-g9a495e6
OSX 10.9.1

### Please provide any additional information below.

[[!format sh """

start git assistant with "git annex web app"
safari open tab, but shows connection refused
git annex crashed with "illegal hardware instruction"

# End of transcript or log.
"""]]

> [[fixed|done]] --[[Joey]]
