🛠️ [TASK] : Investigate `cargo +nightly testdocs` failure in CI

[bkioshn]

Summary

Investigate cargo +nightly testdocs failure in CI

Description

Rust CI failed in multiple PR with similar error messages

Documentation tests all pass check : 68.7190 s : ❌
rust-local+build |   $ cargo +nightly testdocs  

rust-local+build |   . Couldn't compile the test.
rust-local+build |   . ---- rbac-registration/src/cardano/cip509/utils/cip134.rs - 
rust-local+build | cardano::cip509::utils::cip134::Cip0134Uri::parse (line 32) stdout ----
rust-local+build |   . error: extern location for rbac_registration does not exist: 
rust-local+build | /root/build/target/release/deps/librbac_registration.rlib
rust-local+build |   .  --> rbac-registration/src/cardano/cip509/utils/cip134.rs:32:1
rust-local+build |   .   |
rust-local+build |   . 3 | extern crate r#rbac_registration;
rust-local+build |   .   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• https://github.com/input-output-hk/catalyst-libs/actions/runs/12386326051/job/34574022052#step:4:317
• https://github.com/input-output-hk/catalyst-libs/actions/runs/12386619825/job/34574797706?pr=101#step:7:414
• https://github.com/input-output-hk/catalyst-libs/actions/runs/12386575128/job/34574678683?pr=106#step:7:619

Fixing approach

1. Create a fork branch from the branch that fail

• test(rust): doc artifact #112
  and modify the possible thing that may cause error
• 9d645f2

build:
   SAVE ARTIFACT target/$TARGETARCH/doc doc

After the modification, the CI pass

2. Then trying to revert the changes, CI pass

• 2d12aff

3. Made changes to original branch to test whether, the changes made in 1 fix the issue CI fail

• 8583611

4. Merge the changes to the fork branch CI fail

• 3224e98

5. Try removing --no-cache within the fork branch CI pass

• 331e56a

Goal

• Investigate the root cause of the problem (might be caching problem/ syntax problem)

[bkioshn]

#114 Solved for the test allure report, but cargo +nightly testdocs still occurs