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Extend proc_macro_back_compat lint to actix-web #83179

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merged 1 commit into from
Mar 19, 2021

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Aaron1011
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Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (syn) is in use. The actix-web
crate only depends on pin-project v1.0.0, so checking the version of
actix-web does not guarantee that a new enough version of
pin-project (and therefore syn) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of pin-project. When this is the case,
bumping the actix-web dependency will pull in the latest version of
pin-project, which has an explicit dependency on a newer v dependency
on a newer version of syn.

The lint message tells users to update actix-web, since that's what
they're most likely to have control over. We could potentially tell them
to run cargo update -p syn, but I think it's more straightforward to
suggest an explicit change to the Cargo.toml

The actori-web fork had its last commit over a year ago, and appears
to just be a renamed fork of actix-web. Therefore, I've removed the
actori-web check entirely - any crates that actually get broken can
simply update syn themselves.

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r? @estebank

(rust-highfive has picked a reviewer for you, use r? to override)

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Mar 16, 2021
@Aaron1011
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r? @petrochenkov

@Aaron1011
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This makes the back-compat check more restrictive, so let's do a Crater run to ensure that we're not prematurely breaking any crates:

@bors try

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bors commented Mar 16, 2021

⌛ Trying commit 3c7e68acc9d409d534f78cd6e58a1a4ba6c42648 with merge c61b25cb8dc9a3b248af6d3de8dd6115c57afd3a...

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bors commented Mar 16, 2021

☀️ Try build successful - checks-actions
Build commit: c61b25cb8dc9a3b248af6d3de8dd6115c57afd3a (c61b25cb8dc9a3b248af6d3de8dd6115c57afd3a)

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👌 Experiment pr-83179 created and queued.
🤖 Automatically detected try build c61b25cb8dc9a3b248af6d3de8dd6115c57afd3a
⚠️ Try build based on commit 107896c, but latest commit is 3c7e68acc9d409d534f78cd6e58a1a4ba6c42648. Did you forget to make a new try build?
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

@craterbot craterbot added S-waiting-on-crater Status: Waiting on a crater run to be completed. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 16, 2021
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🚧 Experiment pr-83179 is now running

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

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🎉 Experiment pr-83179 is completed!
📊 2 regressed and 1 fixed (394 total)
📰 Open the full report.

⚠️ If you notice any spurious failure please add them to the blacklist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

@craterbot craterbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-crater Status: Waiting on a crater run to be completed. labels Mar 18, 2021
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This broke two actori crates, as expected. There were no other regressions.

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
@Aaron1011
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@petrochenkov: This should now be ready to merge

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@bors r+

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bors commented Mar 18, 2021

📌 Commit 390d1ef has been approved by petrochenkov

@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 Mar 18, 2021
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 18, 2021
…enkov

Extend `proc_macro_back_compat` lint to `actix-web`

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 18, 2021
…enkov

Extend `proc_macro_back_compat` lint to `actix-web`

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 19, 2021
…enkov

Extend `proc_macro_back_compat` lint to `actix-web`

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 19, 2021
…enkov

Extend `proc_macro_back_compat` lint to `actix-web`

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 19, 2021
…enkov

Extend `proc_macro_back_compat` lint to `actix-web`

Unlike the other cases of this lint, there's no simple way to detect if
an old version of the relevant crate (`syn`) is in use. The `actix-web`
crate only depends on `pin-project` v1.0.0, so checking the version of
`actix-web` does not guarantee that a new enough version of
`pin-project` (and therefore `syn`) is in use.

Instead, we rely on the fact that virtually all of the regressed crates
are pinned to a pre-1.0 version of `pin-project`. When this is the case,
bumping the `actix-web` dependency will pull in the *latest* version of
`pin-project`, which has an explicit dependency on a newer v dependency
on a newer version of `syn`.

The lint message tells users to update `actix-web`, since that's what
they're most likely to have control over. We could potentially tell them
to run `cargo update -p syn`, but I think it's more straightforward to
suggest an explicit change to the `Cargo.toml`

The `actori-web` fork had its last commit over a year ago, and appears
to just be a renamed fork of `actix-web`. Therefore, I've removed the
`actori-web` check entirely - any crates that actually get broken can
simply update `syn` themselves.
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 19, 2021
Rollup of 11 pull requests

Successful merges:

 - rust-lang#82500 (Reuse `std::sys::unsupported::pipe` on `hermit`)
 - rust-lang#82759 (Remove unwrap_none/expect_none from compiler/.)
 - rust-lang#82846 (rustdoc: allow list syntax for #[doc(alias)] attributes)
 - rust-lang#82892 (Clarify docs for Read::read's return value)
 - rust-lang#83179 (Extend `proc_macro_back_compat` lint to `actix-web`)
 - rust-lang#83197 (Move some test-only code to test files)
 - rust-lang#83208 (Fix gitattibutes for old git versions)
 - rust-lang#83215 (Deprecate std::os::haiku::raw, which accidentally wasn't deprecated)
 - rust-lang#83230 (Remove unnecessary `forward_inner_docs` hack)
 - rust-lang#83236 (Upgrade memmap to memmap2)
 - rust-lang#83270 (Fix typo/inaccuracy in the documentation of Iterator::skip_while)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 75571a5 into rust-lang:master Mar 19, 2021
@rustbot rustbot added this to the 1.52.0 milestone Mar 19, 2021
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8 participants