>>> Checking gridflow-0.9.3.tar.gz's mtime...
>>> WORKDIR is up-to-date, keeping...
>>> Compiling source in /var/tmp/portage/media-plugins/gridflow-0.9.3/work/gridflow-0.9.3 ...
/var/tmp/portage/media-plugins/gridflow-0.9.3/work /var/tmp/portage/media-plugins/gridflow-0.9.3/work/gridflow-0.9.3
 [31;01m*[0m Cannot find GEM workdir. (/var/tmp/portage/gem-0.90.0/work/gem-0.90.0)
 [31;01m*[0m You can solve this by rebuilding gem with:
 [31;01m*[0m 
 [31;01m*[0m FEATURES=keepwork emerge gem gridflow
 [31;01m*[0m 
 [31;01m*[0m ERROR: media-plugins/gridflow-0.9.3 failed.
 [31;01m*[0m Call stack:
 [31;01m*[0m               ebuild.sh, line   49:  Called src_compile
 [31;01m*[0m             environment, line 2332:  Called die
 [31;01m*[0m The specific snippet of code:
 [31;01m*[0m               die;
 [31;01m*[0m  The die message:
 [31;01m*[0m   (no error message)
 [31;01m*[0m 
 [31;01m*[0m If you need support, post the topmost build error, and the call stack if relevant.
 [31;01m*[0m A complete build log is located at '/var/tmp/portage/media-plugins/gridflow-0.9.3/temp/build.log'.
 [31;01m*[0m The ebuild environment file is located at '/var/tmp/portage/media-plugins/gridflow-0.9.3/temp/environment'.
 [31;01m*[0m