clone: fall back to pull source repo cannot be locked,
937ee88da3ef was a noop
937ee88da3ef was a noop, it was missing the wait keyword
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://www.selenic.com/mercurial/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.