try enabling `linker-messages` by default again #149937

jyn514 · 2025-12-13T00:39:20Z

Split out linker-info from linker-messages
Make linker-messages warn-by-default; keep linker-info deny-by-default

Helps with #136096.

saethlin · 2025-12-13T15:28:55Z

try enabling `linker-messages` by default again

rust-bors · 2025-12-13T17:45:35Z

☀️ Try build successful (CI)
Build commit: 58b1b3c (58b1b3c5342a414c161338871f8004258ccef2a7, parent: eb171a227f9e5de5d376b6edb56b174bc8235fb3)

saethlin · 2025-12-13T18:04:31Z

@craterbot build-only

craterbot · 2025-12-13T18:04:34Z

🚨 Error: failed to parse the command

🆘 If you have any trouble with Crater please ask in t-infra on Zulip
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

saethlin · 2025-12-13T18:07:18Z

@craterbot run mode=build-only

craterbot · 2025-12-13T18:07:36Z

👌 Experiment pr-149937 created and queued.
🤖 Automatically detected try build 58b1b3c
🔍 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

don't use no_main and no_core to test IBT The previous test was quite fragile and depended on a bunch of internal features. Simplify it. Split out of rust-lang#149937. cc `@jieyouxu` `@Oneirical`

don't use no_main and no_core to test IBT The previous test was quite fragile and depended on a bunch of internal features. Simplify it. Split out of rust-lang#149937. cc ``@jieyouxu`` ``@Oneirical``

don't use no_main and no_core to test IBT The previous test was quite fragile and depended on a bunch of internal features. Simplify it. Split out of rust-lang#149937. cc ```@jieyouxu``` ```@Oneirical```

Rollup merge of #149969 - jyn514:ibt, r=jieyouxu don't use no_main and no_core to test IBT The previous test was quite fragile and depended on a bunch of internal features. Simplify it. Split out of #149937. cc ```@jieyouxu``` ```@Oneirical```

bors · 2025-12-15T08:28:55Z

☔ The latest upstream changes (presumably #149999) made this pull request unmergeable. Please resolve the merge conflicts.

don't use no_main and no_core to test IBT The previous test was quite fragile and depended on a bunch of internal features. Simplify it. Split out of rust-lang/rust#149937. cc ```@jieyouxu``` ```@Oneirical```

craterbot · 2025-12-25T06:54:22Z

🚧 Experiment pr-149937 is now running

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

craterbot · 2025-12-27T07:36:02Z

🎉 Experiment pr-149937 is completed!
📊 24 regressed and 5 fixed (758860 total)
📊 2582 spurious results on the retry-regressed-list.txt, consider a retry¹ if this is a significant amount.
📰 Open the summary report.

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

re-run the experiment with crates=https://crater-reports.s3.amazonaws.com/pr-149937/retry-regressed-list.txt ↩

- Hide common linker output behind `linker-info` - Add tests - Account for different capitalization on windows-gnu when removing "warning" prefix - Add some more comments - Add macOS deployment-target test - Ignore linker warnings from trying to statically link glibc I don't know what's going on in `nofile-limit.rs` but I want no part of it.

rustbot · 2026-01-31T20:45:15Z

Some changes occurred in compiler/rustc_passes/src/check_attr.rs

cc @jdonszelmann, @JonathanBrouwer

rustbot · 2026-01-31T20:45:17Z

r? @BoxyUwU

rustbot has assigned @BoxyUwU.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

jyn514 · 2026-01-31T20:45:20Z

r? @mati865

rust-log-analyzer · 2026-01-31T21:52:00Z

The job x86_64-gnu-tools failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

REPOSITORY                                   TAG       IMAGE ID       CREATED      SIZE
ghcr.io/dependabot/dependabot-updater-core   latest    bcec0b4e062b   5 days ago   783MB
=> Removing docker images...
Deleted Images:
untagged: ghcr.io/dependabot/dependabot-updater-core:latest
untagged: ghcr.io/dependabot/dependabot-updater-core@sha256:b662be51f7b8ef7e2c8464428f14e49cb79c36aa9afb7ecb9221dfe0f507050c
deleted: sha256:bcec0b4e062b5ffe11cc1c2729558c0cd96621c0271ab5e97ff3a56e0c25045a
deleted: sha256:64e147d5e54d9be8b8aa322e511cda02296eda4b8b8d063c6a314833aca50e29
deleted: sha256:5cba409bb463f4e7fa1a19f695450170422582c1bc7c0e934d893b4e5f558bc6
deleted: sha256:cddc6ebd344b0111eaab170ead1dfda24acdfe865ed8a12599a34d338fa8e28b
deleted: sha256:2412c3f334d79134573cd45e657fb6cc0abd75bef3881458b0d498d936545c8d
---
tests/ui/double_parens.rs ... ok
tests/ui/drop_non_drop.rs ... ok
tests/ui/duplicate_underscore_argument.rs ... ok
tests/ui/duplicated_attributes.rs ... ok
tests/ui/duration_suboptimal_units_days_weeks.rs ... ok
tests/ui/duration_suboptimal_units.rs ... ok
tests/ui/duration_subsec.rs ... ok
tests/ui/double_parens.fixed ... ok
tests/ui/duration_suboptimal_units_days_weeks.fixed ... ok
tests/ui/duration_suboptimal_units.fixed ... ok
tests/ui/duration_subsec.fixed ... ok
tests/ui/elidable_lifetime_names.rs ... ok
tests/ui/eager_transmute.rs ... ok
tests/ui/else_if_without_else.rs ... ok
tests/ui/empty_docs.rs ... ok
---
...............................................    (147/147)

======== tests/rustdoc-gui/globals.goml ========

[ERROR] line 14: Error: The window properties still all match: for command `wait-for-window-property-false: {"searchIndex": null}`
    at <file:///checkout/obj/build/x86_64-unknown-linux-gnu/test/rustdoc-gui/doc/test_docs/index.html?search=Foo>

======== tests/rustdoc-gui/search-result-display.goml ========

[WARNING] line 39: Delta is 0 for "x", maybe try to use `compare-elements-position` instead?

zacknewman · 2026-02-01T22:38:40Z

@jyn514, there is still an issue with macOS; so I'm not sure this should be enabled yet. See #151970.

jyn514 · 2026-02-02T15:10:49Z

@zacknewman that warning has been moved into the new linker-info lint, which is allow-by-default.

zacknewman · 2026-02-02T16:25:15Z

@zacknewman that warning has been moved into the new linker-info lint, which is allow-by-default.

~~Has that change made it to nightly? Yesterday I tried using the nightly compiler, and it still erred.~~

rustc -Whelp using nightly doesn't contain linker-info, so the error occurring on nightly is expected.

rust-bors · 2026-02-03T22:35:01Z

☔ The latest upstream changes (presumably #152063) made this pull request unmergeable. Please resolve the merge conflicts.

mati865

Just a couple of questions regarding the tests, to make sure they don't cause issues for people working on their machines.

View changes since this review

mati865 · 2026-02-04T11:41:34Z

compiler/rustc_codegen_ssa/src/back/link.rs

+fn is_windows_gnu_ld(sess: &Session) -> bool {
+    let (_, flavor) = linker_and_flavor(sess);
+    sess.target.is_like_windows
+        && !sess.target.is_like_msvc
+        && matches!(flavor, LinkerFlavor::Gnu(_, Lld::No))
+}


This will match windows-gnu and windows-gnullvm targets. Probably doesn't matter enough to justify adding && sess.target.abi != Abi::Llvm there.

mati865 · 2026-02-04T12:00:42Z

tests/ui/linking/windows-gnu-corrupt-drective.rs

@@ -0,0 +1,5 @@
+//@ only-windows-gnu


Wait, this still happens on CI?
It should not since Sep 9, 2024: #119229 (comment)

Regardless of the CI, having a test that fails only with some host tools version doesn't seem right.

um. hm. possibly this only fails for me locally because I have an old version of windows-gnu? I'm not sure how to test it in CI ...

maybe instead I could add a fake-linker script that prints exactly the error message I see locally? does that seem reasonable?

Yeah, that's very likely. Does your ld -v show version older than 2.40?

Fake linker sounds fine for me, although that probably would have to be a batch script or powershell one since this test runs on Windows.

@bors try jobs=x86_64-mingw-1,x86_64-mingw-2

We can test it on CI after you resolve conflicts.

@bors delegate

tests/run-make/macos-deployment-target-warning/warnings.txt

mati865 · 2026-02-04T12:12:11Z

@rustbot author

jyn514 · 2026-02-04T13:18:39Z

@rustbot review

rust-bors · 2026-02-04T15:44:28Z

🔒 Merge conflict

A merge attempt failed due to a merge conflict. Please rebase on top of the latest base
branch, and let the reviewer approve again.

How do I rebase?

Assuming self is your fork and upstream is this repository,
you can resolve the conflict following these steps:

git checkout linker-info (switch to your branch)
git fetch upstream HEAD (retrieve the latest base branch)
git rebase upstream/HEAD -p (rebase on top of it)
Follow the on-screen instruction to resolve conflicts (check git status if you got lost).
git push self linker-info --force-with-lease (update this PR)

You may also read
Git Rebasing to Resolve Conflicts by Drew Blessing
for a short tutorial.

Please avoid the "Resolve conflicts" button on GitHub.
It uses git merge instead of git rebase which makes the PR commit history more difficult to read.

Sometimes step 4 will complete without asking for resolution. This is usually due to difference between how Cargo.lock conflict is
handled during merge and rebase. This is normal, and you should still perform step 5 to update this PR.

rust-bors · 2026-02-04T15:46:36Z

✌️ @jyn514, you can now approve this pull request!

If @mati865 told you to "r=me" after making some further change, then please make that change and post @bors r=mati865.

jyn514 · 2026-02-04T20:02:49Z

@rustbot author

rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Dec 13, 2025