error building hgcli

[Chuck Tuffli]

I'm new to the rust hgcli and am hitting an error. What is the error
message trying to tell me?

  Building wheel for mercurial (PEP 517): finished with status 'done'
  Created wheel for mercurial:
filename=mercurial-5.7.1+hg412.e2f7b2695ba1-cp38-cp38-linux_x86_64.whl
size=4899690 sha256=ca4503f9d7a6570e5468e34320dfddba87650a3dde9a22214f681dd6493f7059
  Stored in directory:
/tmp/pip-ephem-wheel-cache-_apc34xv/wheels/cb/5f/83/fea064d8a4ef765f3522ef8ae2919da8f589cf20a8cbb7f665
Successfully built mercurial
Installing collected packages: mercurial

Successfully installed mercurial-5.7.1+hg412.e2f7b2695ba1
Removed build tracker: '/tmp/pip-req-tracker-dbx8taye'
error[PYOXIDIZER_BUILD]: extension module
hgext.fsmonitor.pywatchman.bser cannot be loaded from memory but
memory loading required
  --> ./pyoxidizer.bzl:70:5
   |
70 |     exe.add_python_resources(exe.pip_install(["--verbose", ROOT]))
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
add_python_resources()


error: extension module hgext.fsmonitor.pywatchman.bser cannot be
loaded from memory but memory loading required

This is with a recent version of default (changeset:
46794:e2f7b2695ba1) on an Ubuntu 20.04 system.

--chuck