allow to compile with parking_lot 0.12

.github/workflows/ci.yml

@@ -175,8 +175,13 @@ jobs:
       - if: matrix.msrv == 'MSRV'
         name: Prepare minimal package versions (MSRV only)
         run: |
+          set -x
           cargo update -p indexmap --precise 1.6.2
           cargo update -p hashbrown:0.12.0 --precise 0.9.1
+          PROJECTS=("." "examples/decorator" "examples/maturin-starter" "examples/setuptools-rust-starter" "examples/word-count")
+          for PROJ in ${PROJECTS[@]}; do
+            cargo update --manifest-path "$PROJ/Cargo.toml" -p parking_lot --precise 0.11.0
+          done
 
       - name: Build docs
         run: cargo doc --no-deps --no-default-features --features "full ${{ matrix.extra_features }}"

CHANGELOG.md

@@ -18,6 +18,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added `as_bytes` on `Py<PyBytes>`. [#2235](https://github.com/PyO3/pyo3/pull/2235)
 
+### Packaging
+
+- Extend `parking_lot` dependency supported versions to include 0.12. [#2239](https://github.com/PyO3/pyo3/pull/2239)
+
 ## [0.16.2] - 2022-03-15
 
 ### Packaging

Cargo.toml

@@ -16,7 +16,7 @@ edition = "2018"
 [dependencies]
 cfg-if = "1.0"
 libc = "0.2.62"
-parking_lot = "0.11.0"
+parking_lot = ">= 0.11, < 0.13"
 
 # ffi bindings to the python interpreter, split into a seperate crate so they can be used independently
 pyo3-ffi = { path = "pyo3-ffi", version = "=0.16.2" }