Error: can't find Rust compiler

CrewAI Community Support
1

Execution of crewai install results in “error: can’t find Rust compiler”. Is a Rust compiler required to use CrewAI, I did not see a reference to rust in the installation documentation.

I used the following commands to attempt to the installation:
brew install python3.11
python3.11 -m venv venv
source venv/bin/activate
Python 3.11.10
python -m pip install --upgrade pip
pip --version
pip 24.3.1 from /Users/burr/my-projects/crewai-1/venv/lib/python3.11/site-packages/pip (python 3.11)
pip install crewai
pip install ‘crewai[tools]’
crewai version
crewai version: 0.80.0
crewai create crew demo
cd demo
crewai install

That resulted in “error: can’t find Rust compiler”
So, I installed the rust compiler

That seemed to help as the crewai install process moved along further but then resulted in the following error:

error: failed to run custom build command for pyo3-ffi v0.20.3

  Caused by:
    process didn't exit successfully:
  `/Users/burr/.cache/uv/sdists-v6/pypi/tiktoken/0.7.0/tYlVBWsiibQtdj2sG5Dq9/src/target/release/build/pyo3-ffi-1db8cb53afdefbd9/build-script-build`

Mac OS 15.1

2

Using Python 3.11 fixed this for me.

3

solved with python 3.11,
make sure to create a new env and get rid of any dependency (conda or pytho path) on 3.13