License the whole `rustc-perf` repository under the MIT license

[Kobzol]

This repository currently does not have a top-level LICENSE file (#1880), which means that not all of its code is covered by a license. We would like to license the whole rustc-perf repository (apart from the collector/compile-benchmarks directory, which has its own licenses) under the MIT License, to make it easier to use rustc-perf in rustc source distributions. In the future, we might want to extend this license to MIT/Apache 2.0 (although currently we're aiming at MIT, as a start, since it is easier), hence we would like to ask the contributors to agree with a dual MIT/Apache 2.0 license, as a sort of future-proofing.

To do that, we need contributors that made commits to this repository (with some caveats, see below) to agree by posting a comment stating their approval to this issue. Please see instructions at the bottom of this issue if you are mentioned in the list below. I will try to also contact the contributors individually.

How did we select the list of contributors from whom we need the approval?

I analyzed the commits from `rustc-perf` going all the way back to [`e99853d4777a1df001853c619eead0c891c28488`](https://github.com/rust-lang/rustc-perf/commit/e99853d4777a1df001853c619eead0c891c28488). In this commit, there was a top-level MIT license at the root of the repository, therefore all earlier commits should be MIT licensed. Then I found a set of contributors that made at least a single commit to any other directory than `collector` and `site`, because these two were already MIT licensed. I used [this](https://gist.github.com/Kobzol/f6abec15c398759d06feaa1aed86f71f) script for performing the analysis.

Related issues: https://github.com/rust-lang/rustc-perf/issues/1880, https://github.com/rust-lang/rustc-perf/issues/1927 PR with the new license: https://github.com/rust-lang/rustc-perf/pull/1881

Checkoff

To agree to the licensing terms, please comment with the following text on this issue (you can copy the text using the copy button on the right):

I license past and future contributions to the `rust-lang/rustc-perf` repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

Thank you very much!

Affected contributors:

• [x] @Mark-Simulacrum
• [x] @Kobzol
• [x] @rylev
• [x] @nnethercote
• [x] @pnkfelix
• [x] @klensy
• [x] @tgnottingham
• [x] @ecstatic-morse
• [x] @jyn514
• [x] @wesleywiser
• [x] @s7tya
• [ ] @Horki (their code is no longer in this repository)
• [x] @weihanglo
• [x] @homersimpsons
• [x] @eth3lbert
• [x] @pietroalbini
• [x] @chengr4
• [x] @blyxyas
• [x] @miwig
• [x] @kennytm
• [x] @jsha
• [x] @GuillaumeGomez
• [x] @sn99
• [x] @apiraino
• [x] @est31
• [x] @eddyb
• [x] @RalfJung
• [x] @alex
• [x] @ishitatsuyuki
• [x] @alexcrichton
• [x] @SimonSapin

[Kobzol]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[GuillaumeGomez]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[ishitatsuyuki]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[homersimpsons]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[s7tya]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[blyxyas]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[sn99]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[kennytm]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[weihanglo]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[RalfJung]

I license all my past contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

(I don't think it makes sense for me to make statements about future contributions now, and I don't see how that is relevant for this licensing issue.)

[rylev]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[alexcrichton]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[alex]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[eth3lbert]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[pnkfelix]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[SimonSapin]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[wesleywiser]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[klensy]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[jsha]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[nnethercote]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[chengr4]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[jyn514]

... good luck.

---

I license all my past contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[est31]

I license all my past contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[Mark-Simulacrum]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[apiraino]

I think I don't need to make any licensing explicit on my end since my only contribution was a typo fix in a perf. triage report :smile: but anyways

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[pietroalbini]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[miwig]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[tgnottingham]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[eddyb]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[ecstatic-morse]

I license past and future contributions to the rust-lang/rustc-perf repository under the dual MIT/Apache-2.0 license, allowing licensees to chose either at their option.

[Kobzol]

So, we got 30/31 approvals in 5 (!) days, that is awesome! Big thanks to everyone who expressed their approval.

The last remaining contributor who didn't express their approval yet, @Horki, contributed code that was since deleted and is no longer a part of this repository. Therefore I think that we should be good with moving forward with the licensing.

[Kobzol]

A top-level MIT license has been added: https://github.com/rust-lang/rustc-perf/pull/1881.