I am having trouble using mock on Fedora 15 and am not sure what the problem is. Here are the error messages I am getting:
[bradbell@brad-home cppad]$ fedpkg mockbuild warning: Could not canonicalize hostname: brad-home.localdomain Wrote: /home/bradbell/fedpkg/cppad/cppad-20110101.5-1.fc17.src.rpm ERROR: Must be member of 'mock' group to run mock! ([]) ... snip ...
[bradbell@brad-home cppad]$ mock --version ERROR: Must be member of 'mock' group to run mock! ([])
[bradbell@brad-home cppad]$ groups mock