build failure with libpython3.13-nogil

[mw66]

• Versions of Python, cryptography, cffi, pip, and setuptools
  you're using

cryptography-43.0.1.tar.gz

cffi 1.17.1

pip 24.2 from (python 3.13)

• How you installed cryptography

$ pip3.13 install cryptography

• Clear steps for reproducing your bug

  error: failed to run custom build command for `cryptography-cffi v0.1.0 (/tmp/pip-install-s72i30fl/cryptography_44e1e92a5f9e46b6a6dd808d9971c2c8/src/rust/cryptography-cffi)`
  
  Caused by:
    process didn't exit successfully: `/tmp/pip-install-s72i30fl/cryptography_44e1e92a5f9e46b6a6dd808d9971c2c8/src/rust/target/release/build/cryptography-cffi-9bde8bfebc8a385d/build-script-build` (exit status: 1)
  
    cargo:warning=In file included from /tmp/pip-install-s72i30fl/cryptography_44e1e92a5f9e46b6a6dd808d9971c2c8/src/rust/target/release/build/cryptography-cffi-445337a7a5cb2182/out/_openssl.c:57:
    cargo:warning=/usr/include/python3.13t/Python.h:51:4: error: #error "The limited API is not currently supported in the free-threaded build"
    cargo:warning=   51 | #  error "The limited API is not currently supported in the free-threaded build"
    cargo:warning=      |    ^~~~~
    cargo:warning=In file included from /usr/include/python3.13t/Python.h:72,
    cargo:warning=                 from /tmp/pip-install-s72i30fl/cryptography_44e1e92a5f9e46b6a6dd808d9971c2c8/src/rust/target/release/build/cryptography-cffi-445337a7a5cb2182/out/_openssl.c:57:
    cargo:warning=/usr/include/python3.13t/object.h:213:5: error: unknown type name ‘PyMutex’
    cargo:warning=  213 |     PyMutex ob_mutex;           // per-object lock
    cargo:warning=      |     ^~~~~~~
  
  
  error: failed to run custom build command for `cryptography-cffi v0.1.0 (/tmp/pip-install-s72i30fl/cryptography_44e1e92a5f9e46b6a6dd808d9971c2c8/src/rust/cryptography-cffi)`
  
  
  💥 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-3.13-64bit"
  

[alex]

Please search the issue tracker before filing new issues. This is a dupe of #11702