Fail to run cargo test.

Bug Description

When I ran cargo test command, it failed with the following errors:

cargo test
   Compiling target-lexicon v0.12.4
   Compiling autocfg v1.1.0
   Compiling once_cell v1.13.1
   Compiling proc-macro2 v1.0.43
   Compiling libc v0.2.132
   Compiling quote v1.0.21
   Compiling unicode-ident v1.0.3
   Compiling syn v1.0.99
   Compiling parking_lot_core v0.9.3
   Compiling scopeguard v1.1.0
   Compiling cfg-if v1.0.0
   Compiling smallvec v1.9.0
   Compiling unindent v0.1.10
   Compiling indoc v1.0.7
   Compiling lock_api v0.4.7
   Compiling num-traits v0.2.15
   Compiling pyo3-build-config v0.16.6
   Compiling parking_lot v0.12.1
   Compiling ordered-float v3.0.0
   Compiling pyo3-ffi v0.16.6
   Compiling pyo3 v0.16.6
   Compiling pyo3-macros-backend v0.16.6
   Compiling pyo3-macros v0.16.6
   Compiling itemcf v1.0.0 (/Users/Myname/Desktop/Myname/Work/Github/itemcf/itemcf)
    Finished test [unoptimized + debuginfo] target(s) in 34.05s
     Running unittests src/lib.rs (target/debug/deps/itemcf-dc85442e1cd8d29b)
dyld: Library not loaded: @rpath/libpython3.8.dylib
  Referenced from: /Users/Myname/Desktop/Myname/Work/Github/itemcf/itemcf/target/debug/deps/itemcf-dc85442e1cd8d29b
  Reason: image not found
error: test failed, to rerun pass '--lib'

Caused by:
  process didn't exit successfully: `/Users/Myname/Desktop/Myname/Work/Github/itemcf/itemcf/target/debug/deps/itemcf-dc85442e1cd8d29b` (signal: 6, SIGABRT: process abort signal)

### Steps to Reproduce

1. git clone git@github.com:tushushu/itemcf.git
2. check out wip-heap branch
3. cd yourdir/itemcf
4. cargo test

### Backtrace

_No response_

### Your operating system and version

MacOS big sur 11.6.8

### Your Python version (`python --version`)

Python 3.8

### Your Rust version (`rustc --version`)

1.61.0

### Your PyO3 version

0.16.4

### How did you install python? Did you use a virtualenv?

conda create -n py38 python=3.8

### Additional Info

_No response_

Reproduce the failure by checking out the wip-heap branch on macOS Big Sur with conda Python 3.8 and running cargo test in itemcf. Start by tracing the build and linking configuration for libpython3.8.dylib; done means the test binary launches and cargo test completes successfully.