try enabling `linker-messages` by default again by jyn514 · Pull Request #149937 · rust-lang/rust

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

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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.

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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 ↩

try enabling `linker-messages` by default again - Split out `linker-info` from `linker-messages` - Make `linker-messages` warn-by-default; keep `linker-info` deny-by-default Helps with rust-lang#136096.

…uwer Rollup of 13 pull requests Successful merges: - #149937 (try enabling `linker-messages` by default again) - #151733 (Use function shims to make sure EII works on apple targets) - #152120 (Don't ICE on layout error in vtable computation) - #152419 (Move more query system code) - #152431 (Restrict the set of things that const stability can be applied to) - #152436 (Reenable a GCI+mGCA+GCPT test case) - #151142 (Support ADT types in type info reflection) - #152021 (Bump tvOS, visionOS and watchOS Aarch64 targets to tier 2) - #152146 (mGCA: Add associated const type check) - #152372 (style: remove unneeded trailing commas) - #152383 (BikeshedGuaranteedNoDrop trait: add comments indicating that it can be observed on stable) - #152397 (Update books) - #152441 (Fix typos and grammar in top-level and src/doc documentation)

matthiaskrgr · 2026-02-10T21:02:57Z

@bors r-
looks like this failed here
#152451 (comment)

mati865 · 2026-02-10T22:37:17Z

This PR has uncovered a bug in raw-dylib implementation for Linux. I can look into it, but cannot give an ETA.
IMO, it'd be fine to ignore that error for now.

jyn514 · 2026-02-18T00:43:35Z

i can't reproduce these failures locally, even on an x86 linux host :/

jyn514 · 2026-02-18T00:55:18Z

ah ok, i also had to set target.x86_64-unknown-linux-gnu.default-linker-linux-override = "off" so it used GNU LD instead of rust-lld.

jyn514 · 2026-02-18T00:57:15Z

@rustbot ready

mati865 · 2026-02-18T09:57:58Z

@bors try jobs=dist-x86_64-llvm-mingw

I have noticed recently that Clang doesn't handle -nolibc argument on Windows, so we will have to ignore the error for now (I'll implement the fix for the next version), or disable Clang's unused-command-line-argument warnings.

The error:

warning: linker stderr: x86_64-w64-mingw32-clang: argument unused during compilation: '-nolibc' [-Wunused-command-line-argument]
  |
  = note: `#[warn(linker_messages)]` on by default

warning: `std` (lib) generated 1 warning

try enabling `linker-messages` by default again try-job: dist-x86_64-llvm-mingw

rust-bors · 2026-02-18T10:44:58Z

💔 Test for 75ce9fd failed: CI. Failed job:

try - dist-x86_64-llvm-mingw (web logs, enhanced plaintext logs)

tests/ui/linkage-attr/raw-dylib/elf/glibc-x86_64.rs

It's an incomplete feature anyway, it's ok for it to be broken.

… r=petrochenkov Do no add -no-pie on Windows Windows binaries are always position independent and Clang warns when trying to enable or disable that: ``` ❯ clang hello.c -pie clang: warning: argument unused during compilation: '-pie' [-Wunused-command-line-argument] ❯ clang hello.c -no-pie clang: warning: argument unused during compilation: '-no-pie' [-Wunused-command-line-argument] ``` rust-lang#149937 will turn these warnings into build errors: ``` ❯ cargo rustc -- -D linker-messages Compiling hello v0.1.0 (E:\tmp\hello) error: linker stderr: x86_64-w64-mingw32-clang: argument unused during compilation: '-nolibc' [-Wunused-command-line-argument]␍ x86_64-w64-mingw32-clang: argument unused during compilation: '-no-pie' [-Wunused-command-line-argument]␍ | = note: requested on the command line with `-D linker-messages` error: could not compile `hello` (bin "hello") due to 1 previous error ```

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