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/tmps_se5sq0/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-5bfyy9lv/pydantic-core_a0d5660f547c4e8ba979bdde4b07bfb5/LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.14t at /tmp/tmps_se5sq0/venv/bin/python
      📡 Using build options features, bindings from pyproject.toml
      warning: unused manifest key: lints
      error: package `regex-syntax v0.8.5` cannot be built because it requires rustc 1.65 or newer, while the currently active rustc version is 1.63.0
      Either upgrade to rustc 1.65 or newer, or use
      cargo update -p regex-syntax@0.8.5 --precise ver
      where `ver` is the latest version of `regex-syntax` 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/tmps_se5sq0/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmps_se5sq0/venv/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-5bfyy9lv/pydantic-core_a0d5660f547c4e8ba979bdde4b07bfb5/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmps_se5sq0/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)

atform/switch_ppc_aix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_ppc_linux.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_ppc_macosx.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_ppc_unix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_riscv_unix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_s390_unix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_sh_gcc.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_sparc_sun_gcc.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x32_unix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.asm -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.obj -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x64_msvc.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x86_msvc.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/platform/switch_x86_unix.h -> build/lib.linux-x86_64-cpython-314t/greenlet/platform
      copying src/greenlet/tests/_test_extension.c -> build/lib.linux-x86_64-cpython-314t/greenlet/tests
      copying src/greenlet/tests/_test_extension_cpp.cpp -> build/lib.linux-x86_64-cpython-314t/greenlet/tests
      running build_ext
      building 'greenlet._greenlet' extension
      creating build/temp.linux-x86_64-cpython-314t/src/greenlet
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -I/tmp/tmpns77hf9_/venv/include -I/root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/greenlet/greenlet.cpp -o build/temp.linux-x86_64-cpython-314t/src/greenlet/greenlet.o
      In file included from /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_stackref.h:11,
                       from /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_interpframe.h:10,
                       from src/greenlet/TGreenlet.hpp:35,
                       from src/greenlet/greenlet_internal.hpp:18,
                       from src/greenlet/greenlet.cpp:19:
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_object.h: In function ‘PyObject* _Py_XGetRef(PyObject**)’:
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_object.h:617:46: error: invalid conversion from ‘void*’ to ‘PyObject*’ {aka ‘_object*’} [-fpermissive]
        617 |         PyObject *value = _Py_atomic_load_ptr(ptr);
            |                           ~~~~~~~~~~~~~~~~~~~^~~~~
            |                                              |
            |                                              void*
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_object.h: In function ‘PyObject* _Py_TryXGetRef(PyObject**)’:
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_object.h:632:42: error: invalid conversion from ‘void*’ to ‘PyObject*’ {aka ‘_object*’} [-fpermissive]
        632 |     PyObject *value = _Py_atomic_load_ptr(ptr);
            |                       ~~~~~~~~~~~~~~~~~~~^~~~~
            |                                          |
            |                                          void*
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_stackref.h: In function ‘int _Py_TryXGetStackRef(PyObject**, _PyStackRef*)’:
      /root/.local/share/uv/python/cpython-3.14.0b2+freethreaded-linux-x86_64-gnu/include/python3.14t/internal/pycore_stackref.h:774:47: error: invalid conversion from ‘void*’ to ‘PyObject*’ {aka ‘_object*’} [-fpermissive]
        774 |     PyObject *op = _Py_atomic_load_ptr_relaxed(src);
            |                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
            |                                               |
            |                                               void*
      error: command '/usr/bin/c++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for greenlet
ERROR: Failed to build installable wheels for some pyproject.toml based projects (greenlet)

kages/setuptools/_distutils/spawn.py", line 93, in spawn
          raise DistutilsExecError(
              f"command {_debug(cmd)!r} failed with exit code {err.returncode}"
          ) from err
      distutils.errors.DistutilsExecError: command '/usr/bin/c++' failed with exit code 1
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/tmp/pip-install-q7ubmzbr/grpcio_d5ebabf05a5a43289d4eac0511595097/src/python/grpcio/commands.py", line 282, in build_extensions
          build_ext.build_ext.build_extensions(self)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
        File "/tmp/pip-build-env-fp1pujnt/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 484, in build_extensions
          self._build_extensions_serial()
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/tmp/pip-build-env-fp1pujnt/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 510, in _build_extensions_serial
          self.build_extension(ext)
          ~~~~~~~~~~~~~~~~~~~~^^^^^
        File "/tmp/pip-build-env-fp1pujnt/overlay/lib/python3.14t/site-packages/setuptools/command/build_ext.py", line 261, in build_extension
          _build_ext.build_extension(self, ext)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
        File "/tmp/pip-build-env-fp1pujnt/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 565, in build_extension
          objects = self.compiler.compile(
              sources,
          ...<5 lines>...
              depends=ext.depends,
          )
        File "/tmp/pip-install-q7ubmzbr/grpcio_d5ebabf05a5a43289d4eac0511595097/src/python/grpcio/_parallel_compile_patch.py", line 70, in _parallel_compile
          multiprocessing.pool.ThreadPool(BUILD_EXT_COMPILER_JOBS).map(
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
              _compile_single_file, objects
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 367, in map
          return self._map_async(func, iterable, mapstar, chunksize).get()
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 774, in get
          raise self._value
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 125, in worker
          result = (True, func(*args, **kwds))
                          ~~~~^^^^^^^^^^^^^^^
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 48, in mapstar
          return list(map(*args))
        File "/tmp/pip-install-q7ubmzbr/grpcio_d5ebabf05a5a43289d4eac0511595097/src/python/grpcio/_parallel_compile_patch.py", line 65, in _compile_single_file
          self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
          ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-q7ubmzbr/grpcio_d5ebabf05a5a43289d4eac0511595097/src/python/grpcio/commands.py", line 264, in new_compile
          return old_compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
        File "/tmp/pip-build-env-fp1pujnt/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/unix.py", line 223, in _compile
          raise CompileError(msg)
      distutils.compilers.C.errors.CompileError: command '/usr/bin/c++' failed with exit code 1
      
      Exception ignored while calling deallocator <function Pool.__del__ at 0x28bf9ecbac0>:
      Traceback (most recent call last):
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 271, in __del__
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/queues.py", line 397, in put
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/connection.py", line 206, in send_bytes
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/connection.py", line 444, in _send_bytes
        File "/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/connection.py", line 400, in _send
      BrokenPipeError: [Errno 32] Broken pipe
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for grpcio
ERROR: Failed to build installable wheels for some pyproject.toml based projects (grpcio)

  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [10 lines of output]
      Checking for Rust toolchain....
      Running `maturin pep517 write-dist-info --metadata-directory /tmp/pip-modern-metadata-jvb_jskb --interpreter /tmp/tmpghh679x0/venv/bin/python`
      error: failed to parse lock file at: /tmp/pip-install-xlj9287l/rpds-py_15897cb40be8466d8fe44d5d3b848681/Cargo.lock
      
      Caused by:
        lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
      💥 maturin failed
        Caused by: Cargo metadata failed. Does your crate compile with `cargo build`?
        Caused by: `cargo metadata` exited with an error:
      Error running maturin: Command '['maturin', 'pep517', 'write-dist-info', '--metadata-directory', '/tmp/pip-modern-metadata-jvb_jskb', '--interpreter', '/tmp/tmpghh679x0/venv/bin/python']' 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: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

grimoire/trie/tail.o build/temp.linux-x86_64-cpython-314t/marisa-trie/lib/marisa/grimoire/vector/bit-vector.o build/temp.linux-x86_64-cpython-314t/marisa-trie/lib/marisa/keyset.o build/temp.linux-x86_64-cpython-314t/marisa-trie/lib/marisa/trie.o
      running build_ext
      building 'marisa_trie' extension
      creating build/temp.linux-x86_64-cpython-314t/src
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/agent.cpp -o build/temp.linux-x86_64-cpython-314t/src/agent.o
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/base.cpp -o build/temp.linux-x86_64-cpython-314t/src/base.o
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/iostream.cpp -o build/temp.linux-x86_64-cpython-314t/src/iostream.o
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/key.cpp -o build/temp.linux-x86_64-cpython-314t/src/key.o
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/keyset.cpp -o build/temp.linux-x86_64-cpython-314t/src/keyset.o
      c++ -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Imarisa-trie/include -I/tmp/tmpd19aye5s/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a7+freethreaded-linux-x86_64-gnu/include/python3.14t -c src/marisa_trie.cpp -o build/temp.linux-x86_64-cpython-314t/src/marisa_trie.o
      src/marisa_trie.cpp:2705:80: error: ‘__pyx_vectorcallfunc’ has not been declared
       2705 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw);
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
      src/marisa_trie.cpp:30689:69: error: ‘__pyx_vectorcallfunc’ has not been declared
      30689 | static PyObject *__Pyx_PyVectorcall_FastCallDict_kw(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                     ^~~~~~~~~~~~~~~~~~~~
      src/marisa_trie.cpp: In function ‘PyObject* __Pyx_PyVectorcall_FastCallDict_kw(PyObject*, int, PyObject* const*, size_t, PyObject*)’:
      src/marisa_trie.cpp:30726:13: error: ‘vc’ cannot be used as a function
      30726 |     res = vc(func, newargs, nargs, kwnames);
            |           ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      src/marisa_trie.cpp: At global scope:
      src/marisa_trie.cpp:30734:80: error: ‘__pyx_vectorcallfunc’ has not been declared
      30734 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
      src/marisa_trie.cpp: In function ‘PyObject* __Pyx_PyVectorcall_FastCallDict(PyObject*, int, PyObject* const*, size_t, PyObject*)’:
      src/marisa_trie.cpp:30737:18: error: ‘vc’ cannot be used as a function
      30737 |         return vc(func, args, nargs, NULL);
            |                ~~^~~~~~~~~~~~~~~~~~~~~~~~~
      src/marisa_trie.cpp: In function ‘PyObject* __Pyx_CyFunction_CallAsMethod(PyObject*, PyObject*, PyObject*)’:
      src/marisa_trie.cpp:31423:6: error: ‘__pyx_vectorcallfunc’ was not declared in this scope; did you mean ‘vectorcallfunc’?
      31423 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      src/marisa_trie.cpp:31424:9: error: ‘vc’ was not declared in this scope
      31424 |     if (vc) {
            |         ^~
      error: command '/usr/bin/c++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for marisa-trie
ERROR: Failed to build installable wheels for some pyproject.toml based projects (marisa-trie)