Dependency build of maturin fails with [code]error: failed to acquire package cache lock[/code]

[ikky2002fly]

I hope I'm posting in the right place. I'm attempting to build mongodb, which has a set of python dependencies with very specific versions including poetry 1.5.1. For poetry and a few other dependencies I get a "failed to acquire package cache lock".

Is the package cache lock a FreeBSD or rust issue? What is it telling me is wrong and how might I fix/debug this issue? All help is appreciated!
I do not want to use pkg manager in my use case.

[FONT=Calibri]bash
cd ~/mongodb_src2/mongo-r8.0.4
 python3 -m venv .venv
source python3-venv/bin/activate
pip install 'poetry==1.5.1'
...[/FONT]
  error: subprocess-exited-with-error

  × pip subprocess to install build dependencies did not run successfully.
  │ exit code: 1
  ╰─> [49 lines of output]
      Collecting maturin<2.0,>=1.2
        Using cached maturin-1.8.1.tar.gz (197 kB)
        Installing build dependencies: started
        Installing build dependencies: finished with status 'done'
        Getting requirements to build wheel: started
        Getting requirements to build wheel: finished with status 'done'
        Preparing metadata (pyproject.toml): started
        Preparing metadata (pyproject.toml): finished with status 'done'
      Building wheels for collected packages: maturin
        Building wheel for maturin (pyproject.toml): started
        Building wheel for maturin (pyproject.toml): finished with status 'error'
        error: subprocess-exited-with-error

        × Building wheel for maturin (pyproject.toml) did not run successfully.
        │ exit code: 1
        ╰─> [27 lines of output]
            running bdist_wheel
            running build
            running build_py
            creating build/lib.freebsd-14.1-RELEASE-p5-amd64-cpython-311/maturin
            copying maturin/__init__.py -> build/lib.freebsd-14.1-RELEASE-p5-amd64-cpython-311/maturin
            copying maturin/__main__.py -> build/lib.freebsd-14.1-RELEASE-p5-amd64-cpython-311/maturin
            running egg_info
            writing maturin.egg-info/PKG-INFO
            writing dependency_links to maturin.egg-info/dependency_links.txt
            writing requirements to maturin.egg-info/requires.txt
            writing top-level names to maturin.egg-info/top_level.txt
            reading manifest file 'maturin.egg-info/SOURCES.txt'
            reading manifest template 'MANIFEST.in'
            warning: no files found matching '*.json' under directory 'src/python_interpreter'
            writing manifest file 'maturin.egg-info/SOURCES.txt'
            running build_ext
            running build_rust
            error: failed to acquire package cache lock

            Caused by:
              failed to lock file: /u/kinkade/.cargo/.package-cache

            Caused by:
              No locks available (os error 77)
            error: `cargo metadata --manifest-path Cargo.toml --format-version 1 --locked` failed with code 101
            -- Output captured from stdout:

            [end of output]

        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for maturin
      Failed to build maturin
      ERROR: Failed to build installable wheels for some pyproject.toml based projects (maturin)
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

I've tried a bunch of different actions such as clearing some space, 'rustup default stable', updating pip versions, etc.

FreeBSD xxxxxxxxxxx 14.1-RELEASE-p5 FreeBSD 14.1-RELEASE-p5 GENERIC amd64
(.venv) [kinkade@xxxxxxxxxxx mongo-r8.0.4]$ pip --version
pip 25.0 from /u/kinkade/mongodb_src2/mongo-r8.0.4/.venv/lib/python3.11/site-packages/pip (python 3.11)
(.venv) [kinkade@xxxxxxxxxxx mongo-r8.0.4]$ python --version
Python 3.11.10