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Restore crates.io's SourceId hash value to before #9397

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merged 2 commits into from
Apr 23, 2021

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alexcrichton
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This commit restores the hash value of the crates.io SourceId to what
it was before #9384. In #9384 the enum variants of SourceKind were
reordered which accidentally changed the hash value of the SourceId
for crates.io. A change here means that users with a new version of
Cargo will have to redownload the index and all crates, which is
something that we strive to avoid forcing.

In changing this, though, it required a manual implementation of Ord
to still contain the actual fix from #9384 which is to sort SourceKind
differently from how it's defined. I was curious as to why this was
necessary since it wasn't ever necessary in the past and this led to an
odd spelunking which turned up some interesting information. Turns out
Rust 1.47 and after had a breaking change where Cargo would sort
dependencies differently. This means that #9334 could have been opened
up much earlier, but it never was. We ironically only saw an issue when
we fixed this regression (although we didn't realize we were fixing a
regression). This means that we are now permanently codifying the
regression in Cargo.

This commit restores the hash value of the crates.io `SourceId` to what
it was before rust-lang#9384. In rust-lang#9384 the enum variants of `SourceKind` were
reordered which accidentally changed the hash value of the `SourceId`
for crates.io. A change here means that users with a new version of
Cargo will have to redownload the index and all crates, which is
something that we strive to avoid forcing.

In changing this, though, it required a manual implementation of `Ord`
to still contain the actual fix from rust-lang#9384 which is to sort `SourceKind`
differently from how it's defined. I was curious as to why this was
necessary since it wasn't ever necessary in the past and this led to an
odd spelunking which turned up some interesting information. Turns out
Rust 1.47 and after had a breaking change where Cargo would sort
dependencies differently. This means that rust-lang#9334 *could* have been opened
up much earlier, but it never was. We ironically only saw an issue when
we fixed this regression (although we didn't realize we were fixing a
regression). This means that we are now permanently codifying the
regression in Cargo.
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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Apr 23, 2021
// never noticed.
// * Rust 1.52 restored the pre-1.47 behavior (without knowing it did so), and
// breakage was witnessed by actual users due to difference with 1.51.
// * Rust 1.52 (the source as it lives now) changed to match the 1.47-1.51
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@ehuss ehuss Apr 23, 2021

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Are you intending to make a backport for beta, or should this say 1.53 (the current nightly version)?
(Or an I confused?)

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No #9383 was all that's necessary for 1.52 (beta right now). That means that 1.51 and 1.52 are the same with regard to how sources are sorted. I should improve the wording here.

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ehuss commented Apr 23, 2021

Thanks!

@bors r+

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bors commented Apr 23, 2021

📌 Commit d99c35c has been approved by ehuss

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Apr 23, 2021
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bors commented Apr 23, 2021

⌛ Testing commit d99c35c with merge 0ed318d...

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bors commented Apr 23, 2021

☀️ Test successful - checks-actions
Approved by: ehuss
Pushing 0ed318d to master...

@bors bors merged commit 0ed318d into rust-lang:master Apr 23, 2021
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Apr 24, 2021
Update cargo, rls

## cargo

18 commits in 65d57e6f384c2317f76626eac116f683e2b63665..0ed318d182e465cd66071b91ac3d265af63ef8a1
2021-04-04 15:07:52 +0000 to 2021-04-23 20:54:54 +0000
- Restore crates.io's `SourceId` hash value to before (rust-lang/cargo#9397)
- Fix loading `branch=master` patches in the v3 lock transition (rust-lang/cargo#9392)
- Update changelog for 1.52 beta changes. (rust-lang/cargo#9396)
- Fix build-std updating the index on every build. (rust-lang/cargo#9393)
- Fix typo in profile docs (rust-lang/cargo#9386)
- Fix disagreement about lockfile ordering on stable/nightly (rust-lang/cargo#9384)
- Don't give a hard error when the end-user specifies RUSTC_BOOTSTRAP=crate_name (rust-lang/cargo#9365)
- Fix rust-lang/cargo#9350 (cargo build -Z help is missing options) (rust-lang/cargo#9369)
- an struct -> a struct (rust-lang/cargo#9379)
- Handle man pages better on Windows. (rust-lang/cargo#9378)
- fix: better error message when dependency/workspace member missing (rust-lang/cargo#9368)
- Fix typo in book (rust-lang/cargo#9376)
- Don't re-use rustc cache when RUSTC_WRAPPER changes (rust-lang/cargo#9348)
- doc: add split-debuginfo doc in config chapter (rust-lang/cargo#9372)
- refactor: remove `CargoResultExt` (rust-lang/cargo#9367)
- Track "CARGO" in environment fingerprint. (rust-lang/cargo#9363)
- Update clippy lint allow set. (rust-lang/cargo#9356)
- Fix 'suport' typo in documentation (rust-lang/cargo#9338)

## rls

3 commits in 32c0fe006dcdc13e1ca0ca31de543e4436c1299e..74d1800c25498689c5b5120a1e8495fce0cd0d0d
2021-04-12 11:21:12 +0000 to 2021-04-22 21:29:51 +0000
- Bump default integration test message timeout to 30s (rust-lang/rls#1731)
- itertools = 0.9, fst = 0.4 (rust-lang/rls#1729)
- Update cargo (rust-lang/rls#1728)
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Apr 24, 2021
Update cargo, rls

## cargo

18 commits in 65d57e6f384c2317f76626eac116f683e2b63665..0ed318d182e465cd66071b91ac3d265af63ef8a1
2021-04-04 15:07:52 +0000 to 2021-04-23 20:54:54 +0000
- Restore crates.io's `SourceId` hash value to before (rust-lang/cargo#9397)
- Fix loading `branch=master` patches in the v3 lock transition (rust-lang/cargo#9392)
- Update changelog for 1.52 beta changes. (rust-lang/cargo#9396)
- Fix build-std updating the index on every build. (rust-lang/cargo#9393)
- Fix typo in profile docs (rust-lang/cargo#9386)
- Fix disagreement about lockfile ordering on stable/nightly (rust-lang/cargo#9384)
- Don't give a hard error when the end-user specifies RUSTC_BOOTSTRAP=crate_name (rust-lang/cargo#9365)
- Fix rust-lang/cargo#9350 (cargo build -Z help is missing options) (rust-lang/cargo#9369)
- an struct -> a struct (rust-lang/cargo#9379)
- Handle man pages better on Windows. (rust-lang/cargo#9378)
- fix: better error message when dependency/workspace member missing (rust-lang/cargo#9368)
- Fix typo in book (rust-lang/cargo#9376)
- Don't re-use rustc cache when RUSTC_WRAPPER changes (rust-lang/cargo#9348)
- doc: add split-debuginfo doc in config chapter (rust-lang/cargo#9372)
- refactor: remove `CargoResultExt` (rust-lang/cargo#9367)
- Track "CARGO" in environment fingerprint. (rust-lang/cargo#9363)
- Update clippy lint allow set. (rust-lang/cargo#9356)
- Fix 'suport' typo in documentation (rust-lang/cargo#9338)

## rls

3 commits in 32c0fe006dcdc13e1ca0ca31de543e4436c1299e..74d1800c25498689c5b5120a1e8495fce0cd0d0d
2021-04-12 11:21:12 +0000 to 2021-04-22 21:29:51 +0000
- Bump default integration test message timeout to 30s (rust-lang/rls#1731)
- itertools = 0.9, fst = 0.4 (rust-lang/rls#1729)
- Update cargo (rust-lang/rls#1728)
bors added a commit to rust-lang-ci/rust that referenced this pull request Apr 24, 2021
Update cargo, rls

## cargo

18 commits in 65d57e6f384c2317f76626eac116f683e2b63665..0ed318d182e465cd66071b91ac3d265af63ef8a1
2021-04-04 15:07:52 +0000 to 2021-04-23 20:54:54 +0000
- Restore crates.io's `SourceId` hash value to before (rust-lang/cargo#9397)
- Fix loading `branch=master` patches in the v3 lock transition (rust-lang/cargo#9392)
- Update changelog for 1.52 beta changes. (rust-lang/cargo#9396)
- Fix build-std updating the index on every build. (rust-lang/cargo#9393)
- Fix typo in profile docs (rust-lang/cargo#9386)
- Fix disagreement about lockfile ordering on stable/nightly (rust-lang/cargo#9384)
- Don't give a hard error when the end-user specifies RUSTC_BOOTSTRAP=crate_name (rust-lang/cargo#9365)
- Fix rust-lang/cargo#9350 (cargo build -Z help is missing options) (rust-lang/cargo#9369)
- an struct -> a struct (rust-lang/cargo#9379)
- Handle man pages better on Windows. (rust-lang/cargo#9378)
- fix: better error message when dependency/workspace member missing (rust-lang/cargo#9368)
- Fix typo in book (rust-lang/cargo#9376)
- Don't re-use rustc cache when RUSTC_WRAPPER changes (rust-lang/cargo#9348)
- doc: add split-debuginfo doc in config chapter (rust-lang/cargo#9372)
- refactor: remove `CargoResultExt` (rust-lang/cargo#9367)
- Track "CARGO" in environment fingerprint. (rust-lang/cargo#9363)
- Update clippy lint allow set. (rust-lang/cargo#9356)
- Fix 'suport' typo in documentation (rust-lang/cargo#9338)

## rls

3 commits in 32c0fe006dcdc13e1ca0ca31de543e4436c1299e..74d1800c25498689c5b5120a1e8495fce0cd0d0d
2021-04-12 11:21:12 +0000 to 2021-04-22 21:29:51 +0000
- Bump default integration test message timeout to 30s (rust-lang/rls#1731)
- itertools = 0.9, fst = 0.4 (rust-lang/rls#1729)
- Update cargo (rust-lang/rls#1728)
@ehuss ehuss added this to the 1.53.0 milestone Feb 6, 2022
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5 participants