X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-dev.git/blobdiff_plain/209f1da1f4b13941e75a41e1091e79bdda4c4f56..80f29320f6b602f9cd9961d83c59ba21b874ea94:/python/invirt/builder.py

diff --git a/python/invirt/builder.py b/python/invirt/builder.py
index b4a7abf..2e2e405 100644
--- a/python/invirt/builder.py
+++ b/python/invirt/builder.py
@@ -151,8 +151,8 @@ def validateBuild(pocket, package, commit):
 
         # Almost by definition, A is a fast-forward of B if B..A is
         # empty
-        if not c.captureOutput(['git', 'rev-list', '%s..%s' % (commit, branch)],
-                               cwd=package_repo):
+        if c.captureOutput(['git', 'rev-list', '%s..%s' % (commit, branch)],
+                           cwd=package_repo):
             raise InvalidBuild('New commit %s of %s is not a fast-forward of'
                                'commit currently in pocket %s' %
                                (commit, package, pocket))