Cannot build with modern versions of Rust

[rzuckerm]

I'm using cargo build to build this project with Rust 1.74.0 on Alpine 3.18, and I'm seeing this error:

error[E0501]: cannot borrow `*self` as mutable because previous closure requires unique access
   --> pikelet/src/pass/core_to_surface.rs:137:27
    |
136 |     #[debug_ensures(self.names.len() == old(self.names.len()))]
    |     -----------------------------------------------------------
    |     |
    |     closure construction occurs here
    |     first borrow later used by call
137 |     pub fn from_term(&mut self, term: &Term) -> surface::Term {
    |                           ^^^^ second borrow occurs here
...
189 |                 let mut input_terms = vec![self.from_term(input_term)];
    |                                            ---- first borrow occurs due to use of `self` in closure

For more information about this error, try `rustc --explain E0501`.
error: could not compile `pikelet` (lib) due to previous error
warning: build failed, waiting for other jobs to finish...