stacktrace of a src_compile failure

stacktrace.log (text/x-log), 858 bytes, created by Raphaël Droz on 2014-02-13 22:02:33 UTC

 * ERROR: app-misc/pyCardDAV-0.7.0 failed (compile phase):
 *   USE Flag 'python_targets_python2_6' not in IUSE for app-misc/pyCardDAV-0.7.0
 * 
 * Call stack:
 *          ebuild.sh, line   93:  Called src_compile
 *        environment, line 3285:  Called distutils-r1_src_compile
 *        environment, line 1041:  Called _distutils-r1_run_foreach_impl 'distutils-r1_python_compile'
 *        environment, line  258:  Called python_parallel_foreach_impl 'distutils-r1_run_phase' 'distutils-r1_python_compile'
 *        environment, line 3148:  Called _python_obtain_impls
 *        environment, line  679:  Called _python_validate_useflags
 *        environment, line  781:  Called use 'python_targets_python2_6'
 *   phase-helpers.sh, line  203:  Called die
 * The specific snippet of code:
 *   				die "USE Flag '${u}' not in IUSE for ${CATEGORY}/${PF}"