Add Github Actions CI

[llebout]

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[dignifiedquire]

we really should have macOs and Windows here too :)

[ghost]

I agree :) Also BSD if it's available.

[llebout]

@stjepang BSD is not available unless you want to plug a custom runner, and if the actions runner works on BSD. But macOS is a bsd variant so that should at least cover most of failures.

[ghost]

Can we rebase this on master branch to give CI a fresh run?

[llebout]

Tried to add macOS and Windows but it might fail because the actions.rs Github Actions framework may not support these.

[dignifiedquire]

@Leo-LB https://github.com/async-rs/async-std/blob/master/.github/workflows/ci.yml works quite well

[llebout]

@dignifiedquire Yes, it certainly does, I just tried to make use of: https://github.com/actions-rs

[llebout]

@dignifiedquire Looks like it works on macos and windows too, now it's just an issue with wepoll-sys not building somehow

[llebout]

@stjepang Already opened an issue for this here: https://gitlab.com/yorickpeterse/wepoll-sys/-/issues/1

[llebout]

Also we should watch this closely: actions-rs/meta#21

Caching is important, wasting compute resources is not fun. And well.. we can't say CI/CD as a concept isnt already a big source of energy waste..

[llebout]

And sorry for the repeated posts, but I have another thing to say:

It seems that build failure on windows canceled all the other build, is that OK?

[dignifiedquire]

it woul be nice if the oses would run by themselves, especially as windows is a known failure atm

[llebout]

@dignifiedquire Found why: https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idstrategyfail-fast

[llebout]

Also: servo/rust-cssparser#273 - for code coverage

[ghost]

@Leo-LB To install LLVM on Windows: actions/runner-images#104 (comment)

[llebout]

@Leo-LB To install LLVM on Windows: actions/virtual-environments#104 (comment)

@stjepang Cool! I added that.

[ghost]

Okay the remaining issue is easy to fix and unrelated - I'll do that separately from this PR since I'm updating lib.rs right now :)

Merging this, thank you for the PR! I'm very happy that we now have CI for the three major operating systems! <3

[llebout]

@stjepang I did not realize the repo was private here: servo/rust-cssparser#273 - stupid me.

[ghost]

@Leo-LB It seems only code coverage is failing now but I don't understand why: https://github.com/stjepang/smol/runs/618593373

Do you have any ideas?

[llebout]

@stjepang yes look at the issue I opened against cssparser just above.