Tracking Issue: Improve CI

[preston-evans98]

Comprehensiveness

• Add coverage (see https://lib.rs/crates/cargo-tarpaulin)
• Consider adding license check (cc @citizen-stig) CI improvements: dependabot frequency, experimental testing #559
• Consider adding clippy
• Check docstrings
• Introduce job dependencies. Run check first, and other jobs run only if it succeeds. So if PR is completely broken, not a lot of resources will be wasted.

Performance

CI runtime has gone from 30 minutes to 10 minutes. (Thanks @citizen-stig for switching to sccachein #197). We would like to reduce this time even further.

Some Ideas (TODO: expand, evaluate tradeoffs)

• Separate sov-state into two crates: one which provides the API and one which provides the implementation. This would let us avoid depending on RocksDB everywhere.
• Move the sov-modules-macros tests into their own crate instead of relying on trybuild so that they can build in parallel with other items instead of sequentially.

Thanks @bkolad for the suggestion

[preston-evans98]

@citizen-stig Suggests that sccache might alleviate the compilation bottleneck.

[citizen-stig]

Checked running time of the tests and we are fine, except for 2 tests, which are big offenders:

But still they should not lead to 20-30 minutes time of the CI

[citizen-stig]

Some tips recommended by @bkolad :

https://www.youtube.com/watch?v=xUH-4y92jPg

[citizen-stig]

Also there were some comments in #439 in description

[citizen-stig]

@neysofu you might be interested in this one.

[neysofu]

I would propose we close this –it's outdated at this point– and create single issues for more specific improvements we want to make.

[preston-evans98]

Agreed. Closing.