=> "/opt/pkg/bin/bmake" ["-C", "/Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/converters/py-cloudpickle", "all", "PYTHON_VERSION_REQD=312", "BATCH=1", "DEPENDS_TARGET=/nonexistent"]
===> Building for py312-cloudpickle-3.1.2
* Building wheel...
Traceback (most recent call last):
  File "/opt/pkg/lib/python3.12/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
    main()
  File "/opt/pkg/lib/python3.12/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
    json_out["return_val"] = hook(**hook_input["kwargs"])
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/pyproject_hooks/_in_process/_in_process.py", line 280, in build_wheel
    return _build_backend().build_wheel(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/flit_core/buildapi.py", line 74, in build_wheel
    info = make_wheel_in(pyproj_toml, Path(wheel_directory))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/flit_core/wheel.py", line 222, in make_wheel_in
    wb = WheelBuilder.from_ini_path(ini_path, fp)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/flit_core/wheel.py", line 86, in from_ini_path
    ini_info = read_flit_config(ini_path)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/flit_core/config.py", line 75, in read_flit_config
    return prep_toml_config(d, path)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/pkg/lib/python3.12/site-packages/flit_core/config.py", line 91, in prep_toml_config
    raise ConfigError(
flit_core.config.ConfigError: The [tool.flit.metadata] table is no longer supported. Switch to the standard [project] table or require flit_core<4 to build this package.

TIP pass --env-dir and --sdist-extract-dir to keep the build environment and sources, then see https://build.pypa.io/en/stable/how-to/troubleshooting.html#debug-a-failed-build for help debugging a failed build
ERROR Backend subprocess exited when trying to invoke build_wheel
*** Error code 1

Stop.
bmake[1]: stopped making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/converters/py-cloudpickle
*** Error code 1

Stop.
bmake: stopped making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/converters/py-cloudpickle