+++ This bug was initially created as a clone of Bug #204074 +++ There is a second beta out (http://trac.edgewall.org/wiki/TracDownload#LatestBetaRelease0.11b2beta2) I've just changed the ebuild name from trac-0.11_beta1.ebuild to trac-0.11_beta2.ebuild and upgraded my 0.11_beta1 installation. Is working fine. Maybe we could have this as masked ebuild, too.
Bumped, thanks for your contribution to Gentoo.