Bugzilla

I'm running into a similar issue when I try to build the latest on bookmarks/central/autoland locally. Central builds fine for me at the moment. Like Ben, I use git cinnabar.

Results of `./mach build` on autoland branch:
```
0:06.39     raise ParameterMismatch(
 0:06.39 taskgraph.parameters.ParameterMismatch: Don't know how to determine file URL for non-githubrepo: hg::https://hg.mozilla.org/mozilla-unified
 0:06.39 WARNING: Don't know how to determine file URL for non-githubrepo: hg::https://hg.mozilla.org/mozilla-unified
 0:06.39 checking for wget... not found
 0:06.41 checking for ccache... not found
 0:06.41 DEBUG: ccache: Looking for sccache
 0:06.41 ERROR: Cannot find ccache
Error running mach:

    ['build']

The error occurred in code that was called by the mach command. This is either
a bug in the called code itself or in the way that mach is calling it.
You can invoke |./mach busted| to check if this issue is already on file. If it
isn't, please use |./mach busted file build| to report it. If |./mach busted| is
misbehaving, you can also inspect the dependencies of bug 1543241.

If filing a bug, please include the full output of mach, including this error
message.

The details of the failure are as follows:

Exception: Process executed with non-0 exit code 1: ['/Users/mviar/mozilla-central/obj-x86_64-apple-darwin21.1.0/_virtualenvs/build/bin/python', '/Users/mviar/mozilla-central/configure.py']

  File "/Users/mviar/mozilla-central/python/mozbuild/mozbuild/build_commands.py", line 220, in build
    return driver.build(
  File "/Users/mviar/mozilla-central/python/mozbuild/mozbuild/controller/building.py", line 1296, in build
    config_rc = self.configure(
  File "/Users/mviar/mozilla-central/python/mozbuild/mozbuild/controller/building.py", line 1677, in configure
    status = self._run_command_in_objdir(
  File "/Users/mviar/mozilla-central/python/mozbuild/mozbuild/base.py", line 857, in _run_command_in_objdir
    return self.run_process(cwd=self.topobjdir, **args)
  File "/Users/mviar/mozilla-central/python/mach/mach/mixin/process.py", line 180, in run_process
    raise Exception(
```

(moved comment to main bug)