### Context
When working on #4211 & #4213, I was initially very confused by all the
machinery in
[`call_cargo.rs`](https://github.com/model-checking/kani/blob/main/kani-driver/src/call_cargo.rs)
and
[`call_single_file.rs`](https://github.com/model-checking/kani/blob/main/kani-driver/src/call_single_file.rs)
that we used to pass arguments to the different layers of the compiler.
The main source of my confusion was that there were many arguments all
destined for different places (e.g. cargo, rustc, or kani-compiler) that
all had to be encoded in differing ways (e.g. through the `--llvm-args`
flag or the `CARGO_ENCODED_RUSTFLAGS` environment variable) but were
mixed together sharing the same `String` type and similar-sounding
variable names.

Although misconfiguration would often be caught at runtime with a
section of the compiler complaining about unexpected arguments, this
confusion silently bit me a few times where argument names were shared.

### Fix
This PR represents an attempt to encode the way arguments target
different portions of the compiler into the type system using specific
wrapper types for each kind of argument we use. You can convert
transparently into these wrapper types, but then can only convert
between them or pass them to a cargo command using the proper encoding
methods.

Although not perfect (you could still convert into the wrong kind of
argument wrapper initially), this does seem to add some slight
guardrails on the way we call cargo, especially against smaller changes
to the existing patterns like the ones I was making in my PRs. It also
may make the code easier to parse.

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 and MIT licenses.

from the autogenerated : 

## What's Changed
* Ensure that contract closures are FnOnce by @vonaka in
#4151
* Adjust sized hierarchy for Kani's memory predicates by @tautschnig in
#4193
* Update to Rust edition 2024 by @tautschnig in
#4197
* `ptr_offset_from`: Replace arithmetic over pointers by offset
arithmetic by @tautschnig in
#4180
* Automatic cargo update to 2025-07-07 by @github-actions[bot] in
#4208
* Bump tests/perf/s2n-quic from `b8f8cca` to `8715fdf` by
@dependabot[bot] in #4209
* Upgrade Rust toolchain to 2025-07-04 by @tautschnig in
#4199
* Upgrade Rust toolchain to 2025-07-10 by @thanhnguyen-aws in
#4215
* Update CBMC dependency to 6.7.1 by @tautschnig in
#4178
* Split compiler flags to avoid dependency recompilation by
@AlexanderPortland in #4211
* Fix the bug that assign clause cannot be inferred for the inner loop
of nested loops by @thanhnguyen-aws in
#4179
* Upgrade Rust toolchain to 2025-07-11 by @thanhnguyen-aws in
#4219
* Automatic toolchain upgrade to nightly-2025-07-12 by
@github-actions[bot] in #4222
* Fix bug: `goto-cc` crash when there are two quantifers in one proof by
@thanhnguyen-aws in #4221
* Automatic toolchain upgrade to nightly-2025-07-13 by
@github-actions[bot] in #4223
* Automatic cargo update to 2025-07-14 by @github-actions[bot] in
#4224
* Cleanup links to issues that have been addressed by @tautschnig in
#4200
* Selectively enable and fix (slow) Tokio tests by @tautschnig in
#4203
* Bump tests/perf/s2n-quic from `32ba87d` to `1cbd879` by
@dependabot[bot] in #4227
* Implement support for Cargo.toml's default-members by @tautschnig in
#4201
* Do not invoke memset with count of zero by @tautschnig in
#4205
* Support bitwuzla, cvc5, z3 as solver attribute values by @tautschnig
in #4218
* Use CBMC's shuffle_vector expression by @tautschnig in
#4204
* Move tests from slow/kani back to regular suite by @tautschnig in
#4202
* Automatic toolchain upgrade to nightly-2025-07-14 by
@github-actions[bot] in #4225
* Enable GitHub Linux/Arm runners in CI by @tautschnig in
#3841
* Automatic cargo update to 2025-07-21 by @github-actions[bot] in
#4231
* Skip codegen for unneeded harnesses by @AlexanderPortland in
#4213
* Strongly type differing compiler args for clarity by
@AlexanderPortland in #4220
* Remove StableMIR ICE workaround by @carolynzech in
#4235
* Fix bug: Kani unwinds loops with contract in generic function (with -Z
loop-contracts) by @thanhnguyen-aws in
#4232
* Automatic cargo update to 2025-07-28 by @github-actions[bot] in
#4238
* Bump tests/perf/s2n-quic from `1cbd879` to `4938450` by
@dependabot[bot] in #4242
* Upgrade Rust toolchain to 2025-07-21 by @tautschnig in
#4241
* Remove `pretty_ty` and use rustc_public's formatter instead by
@tautschnig in #4243
* Upgrade Rust toolchain to 2025-07-24 by @tautschnig in
#4244
* Documentation cleanup of UB detected by Kani by @tautschnig in
#4245
* Upgrade Rust toolchain to 2025-07-29 by @tautschnig in
#4247
* Automatic toolchain upgrade to nightly-2025-07-30 by
@github-actions[bot] in #4253
* Add unstable option prove-safety-only by @tautschnig in
#4239
* Set bits_per_byte in byte_extract expressions by @tautschnig in
#4255
* `KaniAttributes` Path Resolution Refactor by @carolynzech in
#4249
* Automatic toolchain upgrade to nightly-2025-07-31 by
@github-actions[bot] in #4256
* Support contracts & stubs in trait implementations (partial fix) by
@carolynzech in #4250
* [Breaking Changes] Remove unstable list feature and default memory
checks by @carolynzech in
#4258
* Upgrade Rust toolchain to 2025-08-01 by @tautschnig in
#4261
* Autoharness: add support for references by @tautschnig in
#4234
* Turn off debug assertions under `--prove-safety-only` by @tautschnig
in #4262
* Automatic toolchain upgrade to nightly-2025-08-02 by
@github-actions[bot] in #4264
* Automatic toolchain upgrade to nightly-2025-08-03 by
@github-actions[bot] in #4265
* Automatic cargo update to 2025-08-04 by @github-actions[bot] in
#4267
* Automatic toolchain upgrade to nightly-2025-08-04 by
@github-actions[bot] in #4266
* Introduce thread pool for writing goto binaries in parallel by
@AlexanderPortland in #4236
* Major-version update cargo dependencies by @tautschnig in
#4240
* Bump tests/perf/s2n-quic from `4938450` to `8f510f0` by
@dependabot[bot] in #4270
* Automatic toolchain upgrade to nightly-2025-08-05 by
@github-actions[bot] in #4271
* Automatic toolchain upgrade to nightly-2025-08-06 by
@github-actions[bot] in #4272
* Avoid updating irrelevant symbols when handling quantifiers by
@AlexanderPortland in #4268
* Lazily evaluate debug info by @AlexanderPortland in
#4269
* Clone a template `BodyTransformer` to avoid re-initialization by
@AlexanderPortland in #4259
* Ensuring that MIR constants are marked as static consts by @vonaka in
#4233
* Fix release job dependencies by @tautschnig in
#4273

## New Contributors
* @vonaka made their first contribution in
#4151

**Full Changelog**:
kani-0.64.0...kani-0.65.0

---------

Co-authored-by: Zyad Hassan <88045115+zhassan-aws@users.noreply.github.com>