Allow unauthenticated users to set basic status labels

[camelid]

More labels can be permitted later, but these labels are useful to
indicate the status of a PR. E.g., if someone addresses a review,
there should be a way for them to switch S-waiting-on-author to
S-waiting-on-review.

[jyn514]

I have the same comments as in rust-lang/rustc-dev-guide#910. I think

Should we also add an "auto-labeler" to add waiting-on-review to all PRs when opened?

is the only one that's actionable.

Thanks for the PR!

[camelid]

I have the same comments as in rust-lang/rustc-dev-guide#910. I think

Should we also add an "auto-labeler" to add waiting-on-review to all PRs when opened?

is the only one that's actionable.

Hmm, what do you mean? Is it necessary to add autolabeling before allowing unauthenticated users to change labels? Also, I think you would need to set up rust-highfive to get autolabeling.

[jyn514]

Is it necessary to add autolabeling before allowing unauthenticated users to change labels? Also, I think you would need to set up rust-highfive to get autolabeling.

Oh good point, I forgot the bots are separate. Wasn't there a plan to unify them at some point ... ?

[camelid]

Wasn't there a plan to unify them at some point ... ?

You might be thinking of rust-lang/triagebot#433, which IIRC is blocked.