Strange, after clearing all files generated by buildout, and bootstrapping everything again, this error disappeared, so now I can't reproduce it.
Maybe there was some thing with my buildout environment. Also I always run buildout with -N flag, but now, for testing I removed -N, so some packages was upgraded, maybe this also fixes problem.
Strange, after clearing all files generated by buildout, and bootstrapping everything again, this error disappeared, so now I can't reproduce it.
Maybe there was some thing with my buildout environment. Also I always run buildout with -N flag, but now, for testing I removed -N, so some packages was upgraded, maybe this also fixes problem.