pip installation failed

[luvwinnie]

I have try to install this package with pip, but it still show the following error. How can i fixed this?

       Compiling pyo3 v0.7.0
         Running `rustc --crate-name build_script_build --edition=2018 /home/artibrains/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.7.0/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C opt-level=3 --cfg 'feature="default"' --cfg 'feature="extension-module"' --cfg 'feature="python3"' -C metadata=f25afaacfcd318c4 -C extra-filename=-f25afaacfcd318c4 --out-dir /tmp/pip-install-3pnh2wrp/celery-exporter/target/release/build/pyo3-f25afaacfcd318c4 -L dependency=/tmp/pip-install-3pnh2wrp/celery-exporter/target/release/deps --extern regex=/tmp/pip-install-3pnh2wrp/celery-exporter/target/release/deps/libregex-e018eeb8e3ce2465.rlib --extern version_check=/tmp/pip-install-3pnh2wrp/celery-exporter/target/release/deps/libversion_check-4781dde8a68e1f08.rlib --cap-lints allow`
         Running `/tmp/pip-install-3pnh2wrp/celery-exporter/target/release/build/pyo3-f25afaacfcd318c4/build-script-build`
    error: failed to run custom build command for `pyo3 v0.7.0`

    Caused by:
      process didn't exit successfully: `/tmp/pip-install-3pnh2wrp/celery-exporter/target/release/build/pyo3-f25afaacfcd318c4/build-script-build` (exit code: 101)
    --- stderr
    Error: pyo3 requires a nightly or dev version of Rust.
    Installed version is: 1.42.0 (2020-03-09). Minimum required: 1.34.0-nightly (2019-02-06).
    thread 'main' panicked at 'Aborting compilation due to incompatible compiler.', /home/artibrains/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.7.0/build.rs:633:17
    note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

    warning: build failed, waiting for other jobs to finish...
    error: build failed
    error: cargo failed with code: 101

[SharpEdgeMarshall]

dulicate of #16