[bug] Follow-up: `cargo test` still fails on Windows

[aoxiangtianyu-go]

Describe the bug

This is a follow-up to #14719.

Although #14720 has been merged and resolved part of the original problem, tests are still failing locally under the same setup.

I wanted to open a separate issue to track the remaining failure, since the original issue was closed automatically when the PR was merged.

I'm happy to provide more details and logs if needed.

• System Name: Windows
• System Version: Windows 11 Home China
• System kernel Version: 26100
• System Arch: x86_64
• Is Admin: false
• Rust toolchain: rustc 1.91.1 (ed61e7d7e 2025-11-07)
• Repository: fresh clone from GitHub

There are two test failures observed locally:

• resources::tests::resource_paths_errors fails intermittently (sometimes passes, sometimes fails) under the same setup.

---- resources::tests::resource_paths_errors stdout ----

thread 'resources::tests::resource_paths_errors' (21232) panicked at crates\tauri-utils\src\resources.rs:587:5:
assertion `left == right` failed
  left: 5
 right: 4
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Backtrace

---- resources::tests::resource_paths_errors stdout ----

thread 'resources::tests::resource_paths_errors' (24668) panicked at crates\tauri-utils\src\resources.rs:587:5:
assertion `left == right` failed
  left: 5
 right: 4
stack backtrace:
   0: std::panicking::panic_handler
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:698
   1: core::panicking::panic_fmt
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\panicking.rs:75
   2: core::panicking::assert_failed_inner
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\panicking.rs:434
   3: core::panicking::assert_failed<usize,usize>
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\panicking.rs:394
   4: tauri_utils::resources::tests::resource_paths_errors::closure$0
             at D:\Code\tauri\crates\tauri-utils\src\resources.rs:587
   5: core::ops::function::FnOnce::call_once<tauri_utils::resources::tests::resource_paths_errors::closure_env$0,tuple$<> >
             at C:\Users\lenovo\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:250
   6: serial_test::serial_code_lock::local_serial_core
             at C:\Users\lenovo\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\serial_test-3.2.0\src\serial_code_lock.rs:36
   7: tauri_utils::resources::tests::resource_paths_errors
             at D:\Code\tauri\crates\tauri-utils\src\resources.rs:564
   8: tauri_utils::resources::tests::resource_paths_errors::closure$0
             at D:\Code\tauri\crates\tauri-utils\src\resources.rs:565
   9: core::ops::function::FnOnce::call_once<tauri_utils::resources::tests::resource_paths_errors::closure_env$0,tuple$<> >
             at C:\Users\lenovo\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:250
  10: core::ops::function::FnOnce::call_once
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\ops\function.rs:250
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.


failures:
    resources::tests::resource_paths_errors

• resources::tests::resource_paths_iter_slice_allow_walk is consistently reproducible.

---- resources::tests::resource_paths_iter_slice_allow_walk stdout ----

thread 'resources::tests::resource_paths_iter_slice_allow_walk' (36380) panicked at crates\tauri-utils\src\resources.rs:424:9:
Resource { path: "..\\src\\textures\\ground\\earth.tex", target: "_up_\\src\\textures\\earth.tex" } was expected but not found in [Resource { path: "..\\src\\script.js", target: "_up_\\src\\script.js" }, Resource { path: "..\\src\\assets\\javascript.svg", target: "_up_\\src\\assets\\javascript.svg" }, Resource { path: "..\\src\\assets\\lang\\ar.json", target: "_up_\\src\\assets\\lang\\ar.json" }, Resource { path: "..\\src\\assets\\lang\\en.json", target: "_up_\\src\\assets\\lang\\en.json" }, Resource { path: "..\\src\\assets\\rust.svg", target: "_up_\\src\\assets\\rust.svg" }, Resource { path: "..\\src\\assets\\tauri.svg", target: "_up_\\src\\assets\\tauri.svg" }, Resource { path: "..\\src\\index.html", target: "_up_\\src\\index.html" }, Resource { path: "..\\src\\sounds\\lang\\es.wav", target: "_up_\\src\\sounds\\lang\\es.wav" }, Resource { path: "..\\src\\sounds\\lang\\fr.wav", target: "_up_\\src\\sounds\\lang\\fr.wav" }, Resource { path: "..\\src\\textures\\fire.tex", target: "_up_\\src\\textures\\fire.tex" }, Resource { path: "..\\src\\textures\\ground\\earth.tex", target: "_up_\\src\\textures\\ground\\earth.tex" }, Resource { path: "..\\src\\textures\\ground\\sand.tex", target: "_up_\\src\\textures\\ground\\sand.tex" }, Resource { path: "..\\src\\textures\\water.tex", target: "_up_\\src\\textures\\water.tex" }, Resource { path: "Cargo.toml", target: "Cargo.toml" }, Resource { path: "Tauri.toml", target: "Tauri.toml" }, Resource { path: "tauri.conf.json", target: "tauri.conf.json" }]

Backtrace

stack backtrace:
   0: std::panicking::panic_handler
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:698
   1: core::panicking::panic_fmt
            -at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\panicking.rs:75
   2: tauri_utils::resources::tests::resource_paths_iter_slice_allow_walk::closure$0
             at D:\Code\tauri\crates\tauri-utils\src\resources.rs:424
   3: core::ops::function::FnOnce::call_once<tauri_utils::resources::tests::resource_paths_iter_slice_allow_walk::closure_env$0,tuple$<> >
             at C:\Users\lenovo\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:250
  4: serial_test::serial_code_lock::local_serial_core
           at C:\Users\lenovo\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\serial_test-3.2.0\src\serial_code_lock.rs:36
5: tauri_utils::resources::tests::resource_paths_iter_slice_allow_walk
            at D:\Code\tauri\crates\tauri-utils\src\resources.rs:362
   6: tauri_utils::resources::tests::resource_paths_iter_slice_allow_walk::closure$0
             at D:\Code\tauri\crates\tauri-utils\src\resources.rs:363
   7: core::ops::function::FnOnce::call_once<tauri_utils::resources::tests::resource_paths_iter_slice_allow_walk::closure_env$0,tuple$<> >
             at C:\Users\lenovo\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core\src\ops\function.rs:250
   8: core::ops::function::FnOnce::call_once
             at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\ops\function.rs:250
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

Reproduction

git clone https://github.com/tauri-apps/tauri.git
cargo test

Expected behavior

No response

Full tauri info output

This issue is about running `cargo test` in the repository itself,
not about a Tauri application project.

Stack trace

Additional context

No response

[FabianLars]

Like i said in the PR, this will be fixed by #14662

Afterwards there will still be issues which can be "fixed" by removing common-controls-v6 from the default features. That's tracked in a few issues already though.