Free-threaded Python Library Compatibility Checker

  error: subprocess-exited-with-error
  
  × Building wheel for pydantic-core (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [15 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmpxi2aycl9/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-bh6j50e5/pydantic-core_2ebba07c89524dffb41ad77f5b170ae9/LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.14t at /tmp/tmpxi2aycl9/venv/bin/python
      📡 Using build options features, bindings from pyproject.toml
      warning: unused manifest key: lints
      error: package `icu_normalizer v1.5.0` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.63.0
      Either upgrade to rustc 1.67 or newer, or use
      cargo update -p icu_normalizer@1.5.0 --precise ver
      where `ver` is the latest version of `icu_normalizer` supporting rustc 1.63.0
      💥 maturin failed
        Caused by: Failed to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/tmp/tmpxi2aycl9/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmpxi2aycl9/venv/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-bh6j50e5/pydantic-core_2ebba07c89524dffb41ad77f5b170ae9/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmpxi2aycl9/venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for pydantic-core
ERROR: Failed to build installable wheels for some pyproject.toml based projects (pydantic-core)