- the build and test steps won't run until/unless Dependency and MSRV checks pass
- code coverage won't run until/unless the build steps all pass
## [why]
This helps make more efficient use of CI resources and can help more easily visualize
build issues from the resultant GHA dashboard flow diagram.
## [why]
`cspell` in CI started mysteriously failing mid-2021. Tracking down the
error took some time as it was not obvious from `cspell` feedback where
the issue lay. Ultimately, it was discovered that `cspell` had deprecated
use on NodeJS versions < v12 for `cspell` v5+.
`cspell` is now pinned to v4.2.8, with a maintenance note to allow an
upgrade to the `cspell` version when a version of NodeJS >= v12 is being
used in the CI.
An issue requesting better tool feedback for similar situations was also
opened on the `cspell` repo.[*]
[*]: [🙏🏻 Add warning (or error) when used on deprecated/outdated JS platform versions](https://github.com/streetsidesoftware/cspell/issues/1984)
# [why]
The tool cache is currently failing and seems to be getting further behind current
versions. The [actions-rs/install#12] issue addresses this but seems to be
languishing without any proposed solution.
[ref]: <actions-rs/install#12>
- fixes conversion of new `cargo clippy` output style to GHA annotations
## [why]
`cargo clippy` output formatting changed, using relative instead of absolute paths.
* Make clippy workspace selection more finegrained
* fixup! Make clippy workspace selection more finegrained
* fixup! Make clippy workspace selection more finegrained
* fixup! Make clippy workspace selection more finegrained
* fixup! Make clippy workspace selection more finegrained
* fixup! Make clippy workspace selection more finegrained
* add "clippy.toml" in order to set MSRV for clippy linting
this works only if clippy is invoked with "+nightly"
* add "--target" to clippy in order to also lint tests
Fails trom time to time with:
```
info: installing component 'rustc'
memory allocation of 16777216 bytes failed
Error: The process 'C:\Rust\.cargo\bin\rustup.exe' failed with exit code 3221226505
```
on Build (windows-latest, i686-pc-windows-gnu, feat_os_windows)
