Bugzilla

This is on mozilla-central rev f44e64a61ed1
No changes to the source tree, no local commits. hg diff is empty.
Note that artifact builds are mentioned a few times in the error messages but I'm not trying to do an artifact build.
```
 ./mach bootstrap                       

[...]

Would you like to run a configuration wizard to ensure Mercurial is
optimally configured? (Yn): n
 0:03.86 Setting up artifact node.tar.xz
 0:03.86 Using artifact from local cache: /Users/tim/.mozbuild/toolchains/46c579dc11a71cd1-node.tar.xz
 0:03.90 rm tree: /Users/tim/.mozbuild/node
 0:04.30 untarring "/Users/tim/.mozbuild/node.tar.xz"
 0:03.93 Setting up artifact fix-stacks.tar.xz
 0:03.93 Using artifact from local cache: /Users/tim/.mozbuild/toolchains/2d7a56f8b2600435-fix-stacks.tar.xz
 0:03.93 rm tree: /Users/tim/.mozbuild/fix-stacks
 0:03.93 untarring "/Users/tim/.mozbuild/fix-stacks.tar.xz"
 0:02.90 Could not find artifacts for a toolchain build named `macosx64-minidump-stackwalk`. Local commits and other changes in your checkout may cause this error. Try updating to a fresh checkout of mozilla-central to use artifact builds.
Error running mach:

    ['bootstrap']

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| 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:

subprocess.CalledProcessError: Command '['/usr/local/opt/python/bin/python3.7', '/Users/tim/ffandroid/src/mach', 'artifact', 'toolchain', '--from-build', 'macosx64-minidump-stackwalk']' returned non-zero exit status 1.

  File "/Users/tim/ffandroid/src/python/mozboot/mozboot/mach_commands.py", line 44, in bootstrap
    bootstrapper.bootstrap()
  File "/Users/tim/ffandroid/src/python/mozboot/mozboot/bootstrap.py", line 540, in bootstrap
    checkout_root)
  File "/Users/tim/ffandroid/src/python/mozboot/mozboot/bootstrap.py", line 396, in maybe_install_private_packages_or_exit
    self.instance.ensure_minidump_stackwalk_packages(state_dir, checkout_root)
  File "/Users/tim/ffandroid/src/python/mozboot/mozboot/osx.py", line 568, in ensure_minidump_stackwalk_packages
    minidump_stackwalk.MACOS_MINIDUMP_STACKWALK)
  File "/Users/tim/ffandroid/src/python/mozboot/mozboot/base.py", line 358, in install_toolchain_artifact
    subprocess.check_call(cmd, cwd=state_dir)
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 363, in check_call
    raise CalledProcessError(retcode, cmd)
```