PyPy builds of rust-numpy started failing with Maturin 0.12.13

[adamreichold]

Bug Description

CI builds of rust-numpy using PyPy started failing using Maturin 0.12.13 with the following panic message

  thread 'main' panicked at 'assertion failed: `(left == right)`
    left: `2`,
   right: `1`', src/main.rs:292:13
  stack backtrace:
     0: rust_begin_unwind
               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:584:5
     1: core::panicking::panic_fmt
               at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/panicking.rs:143:14
     2: core::panicking::assert_failed_inner
     3: core::panicking::assert_failed
     4: maturin::run
     5: maturin::main

Your Python version (python -V)

PyPy 7.3.9

Your pip version (pip -V)

pip 22.0.4

What bindings you're using

pyo3

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

https://github.com/PyO3/rust-numpy/runs/6155671160?check_suite_focus=true

[messense]

maturin/src/main.rs

Line 292 in 467c3dd

assert_eq!(wheels.len(), 1);

So somehow it builds multiple wheels instead of just one.

[adamreichold]

The logs contain

🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.7
  🐍 Not using a specific python interpreter
  📦 Built wheel for abi3 Python ≥ 3.7 to /home/runner/work/rust-numpy/rust-numpy/examples/simple/target/wheels/rust_ext-0.1.0-cp37-abi3-linux_x86_64.whl
  ⚠️ Warning: PyPy does not yet support abi3 so the build artifacts will be version-specific. See https://foss.heptapod.net/pypy/pypy/-/issues/3397 for more information.
  📦 Built wheel for PyPy 3.7 to /home/runner/work/rust-numpy/rust-numpy/examples/simple/target/wheels/rust_ext-0.1.0-pp37-pypy37_pp73-linux_x86_64.whl

so as abi3 does not really make sense of PyPy, it seems to build both rust_ext-0.1.0-cp37-abi3-linux_x86_64.whl and rust_ext-0.1.0-pp37-pypy37_pp73-linux_x86_64.whl.

[messense]

It's kinda odd that it seems to work with maturin build: https://github.com/PyO3/maturin/runs/6153657419?check_suite_focus=true , the logs of test build pypy wheel with abi3 step is fine.

I'm trying to reproduce the maturin pep517 build-wheel in #883 .

[messense]

I'm releasing v0.12.14-beta.1, please give it a try after the build finished. I'll cut a new release once we verified that the problem is resolved.

[adamreichold]

Seems to work: https://github.com/PyO3/rust-numpy/runs/6162637050?check_suite_focus=true

Thank you for investigating and resolving this so quickly!

[messense]

v0.12.14 should be out soon: https://github.com/PyO3/maturin/actions/runs/2223028291