A crash when calling a closure with a struct involving the never type

[zhassan-aws]

I tried this code:

#![feature(never_type)]

pub struct Foo {
    _x: i32,
    _never: !,
}

#[cfg_attr(kani, kani::proof)]
fn main() {
    let res = Result::<i32, Foo>::Ok(3);
    let _x = res.unwrap_or_else(|_f| 5);
}

using the following command line invocation:

kani nv.rs

with Kani version: 6bea131

I expected to see this happen: Verification passes

Instead, this happened:

$ kani nv.rs 
Kani Rust Verifier 0.46.0 (standalone)
thread 'rustc' panicked at cprover_bindings/src/goto_program/expr.rs:689:9:
Function call does not type check:
func params: []
args: [Expr { value: Member { lhs: Expr { value: Symbol { identifier: "_RINvMNtCs4A47zemGJJh_4core6resultINtB3_6ResultlNtCslwEuWiA9yWG_2nv3FooE14unwrap_or_elseNCNvBL_4main0EBL_::1::var_7" }, typ: StructTag("tag-_133682644016529668577290331323904023019"), location: None, size_of_annotation: None }, field: "0" }, typ: StructTag("tag-_247671360278137032517711891165892296272"), location: None, size_of_annotation: None }]
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Kani unexpectedly panicked during compilation.
Please file an issue here: https://github.com/model-checking/kani/issues/new?labels=bug&template=bug_report.md

[Kani] current codegen item: codegen_function: std::result::Result::<i32, Foo>::unwrap_or_else::<{[email protected]:11:33: 11:37}>
_RINvMNtCs4A47zemGJJh_4core6resultINtB3_6ResultlNtCslwEuWiA9yWG_2nv3FooE14unwrap_or_elseNCNvBL_4main0EBL_
[Kani] current codegen location: Loc { file: "/home/ubuntu/.rustup/toolchains/nightly-2024-02-09-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/result.rs", function: None, start_line: 1423, start_col: Some(5), end_line: 1423, end_col: Some(63) }
error: /home/ubuntu/git/kani/target/kani/bin/kani-compiler exited with status exit status: 101