Error running this command: svn --non-interactive --config-dir /tmp list --xml -r 31 'file:////svn/qaz_libs/qaz_libs/trunk/8b10b'

svn: warning: W160013: File not found: revision 50, path '/qaz_libs/trunk/8b10b'
svn: E200009: Could not list all targets because some targets don't exist