Repair hg : invalid branchheads cache (visible): tip differs

[Jensen, Aaron]

> On Thu, 2014-06-19 at 18:26 +0000, Jensen, Aaron wrote:
> > Whenever I run hg branches with the debug switch
> > 
> >     > hg branches --debug
> > 
> > I get this message from stderr along with branch information:
> > 
> >     hg : invalid branchheads cache (visible): tip differs
> > 
> > When I run without `--debug`, no stderr message, just branch info.
> > 
> > Is there anyway of repairing this to make this message go away? Google didn't 
> > turn up anything, neither did a scan down Mercurial's debug commands.
> 
> This message says:
>
> "Hey, we looked at the branch cache and it was built when the tip was X.. but 
> we've never heard of X. So I guess we can't use that cache and have to start 
> over. No big deal, I wouldn't mention it except you seemed extra-curious."
>
> If you get it repeatedly, it probably means that there are problems 
> overwriting the cache when it's rebuilt. This is a natural occurrence on 
> multi-user systems, so it doesn't generally warrant a message either. But we 
> should probably add a debug-level message for that.

For posterity's sake, I fixed this by deleting my repository's .hg\cache\branchheads-* files. The next time I ran `hg branches`, Mercurial re-created these files.