svn-checkin broken :-(

Yikes - just tried checking in my current changes and got the following errors:

1st try:
svn ci ...
Transmitting file data .........svn: Commit failed (details follow):
svn: MERGE request failed on '/braindump/trunk/vendor/plugins'
svn: Failed to start '/var/www/vhosts/beanstalkapp.com/subversion/beanstalk.storage/156/braindump/hooks/pre-commit' hook
svn: Your commit message was left in a temporary file:
svn: '/Users/joerg/Development/abc/svn-commit.tmp'

2nd try:
svn ci ...
Transmitting file data .........svn: Commit failed (details follow):
svn: MERGE request failed on '/braindump/trunk/vendor/plugins'
svn: 'pre-commit' hook failed with error output:
/usr/bin/ruby: error while loading shared libraries: libruby.so.1.8: failed to map segment from shared object: Cannot allocate memory

svn: Your commit message was left in a temporary file:
svn: '/Users/joerg/Development/abc/svn-commit.tmp'