Unable to install using cargo install pylyzer --locked

[jensenbox]

Describe the bug
Running cargo install pylyzer --locked results in an error.

Reproducible Code

   Compiling molc v0.3.0
   Compiling py2erg v0.0.69
   Compiling els v0.1.60-nightly.0
error[E0005]: refutable pattern in local binding
   --> /home/christian/.cargo/registry/src/index.crates.io-6f17d22bba15001f/py2erg-0.0.69/convert.rs:450:13
    |
450 |         let Ok(py_program) = locator.fold(py_program);
    |             ^^^^^^^^^^^^^^ pattern `Err(_)` not covered
    |
    = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
    = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
    = note: the matched value is of type `Result<ModModule<SourceRange>, Infallible>`
help: you might want to use `let else` to handle the variant that isn't matched
    |
450 |         let Ok(py_program) = locator.fold(py_program) else { todo!() };
    |                                                       ++++++++++++++++

For more information about this error, try `rustc --explain E0005`.
error: could not compile `py2erg` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: failed to compile `pylyzer v0.0.69`, intermediate artifacts can be found at `/tmp/cargo-install99Qp5y`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

Expected behavior
Complete installation

Screenshots

Environment

christian@christian-desktop:/projects/core$ lsb_release -a
No LSB modules are available.
Distributor ID: Linuxmint
Description:    Linux Mint 21.3
Release:        21.3
Codename:       virginia

[jensenbox]

I was able to do a rustup update and it finally did complete but I don't think it is working. When I run pylyzer with no arguments it just sits there - no progress, no indication of any work being done - nothing.

Even running pylyzer --verbose 2 shows nothing.

[maks-ivanov]

can reproduce