tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` by petrochenkov · Pull Request #160147 · rust-lang/rust

petrochenkov · 2026-07-29T12:17:51Z

The number of threads is now passed by compiletest through --parallel-frontend-threads=N in parallel testing runs.
If it becomes necessary, we'll be able to set a larger number of threads or iterations for the ui/parallel-rustc tests specifically.

r? @jieyouxu

petrochenkov · 2026-07-29T12:18:51Z

        .arg("--emit=mir")
        .arg("-Zmir-opt-level=2")
        .arg("-Copt-level=2")
-        .arg("-Zthreads=1")


This was unnecessary because it's already the default.

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jieyouxu

Thanks
@bors r+ rollup

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rust-bors · 2026-07-30T02:00:01Z

📌 Commit 715f44b has been approved by jieyouxu

It is now in the queue for this repository.

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

…uwer Rollup of 8 pull requests Successful merges: - #159817 (Rename splat to avoid stable name collisions) - #158057 (Don't escape U+FF9E and U+FF9F in `escape_debug_ext`) - #159818 (Resolve vars before calling `unnormalized_obligations`) - #160040 (Split function parsing out of `item.rs` to a new module.) - #160044 (Add regression tests for fixed dead-code issues) - #160147 (tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc`) - #160175 (Try to recover less from incorrectly parsed const arg) - #160181 (Mark `Tuple` and `FnPtr` traits `#[fundamental]`)

Zalathar · 2026-07-30T13:34:25Z

Parallel tests failed in rollup in #160207.

I'm not sure whether there's a soft-conflict in that PR, or if this PR needs a rebase and re-bless over something that has already merged.

@bors r-

rust-bors · 2026-07-30T13:34:33Z

This pull request was unapproved.

This PR was contained in a rollup (#160207), which was unapproved.

View changes since this unapproval

Zalathar · 2026-07-30T13:43:40Z

@bors try jobs=x86_64-gnu-parallel-frontend

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` try-job: x86_64-gnu-parallel-frontend

rust-bors · 2026-07-30T15:36:38Z

💔 Test for d63d273 failed: CI. Failed job:

try - x86_64-gnu-parallel-frontend (web logs, enhanced plaintext logs)

rustbot · 2026-07-31T08:51:04Z

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

petrochenkov · 2026-07-31T08:51:39Z

Disabled the failing test in parallel mode.
@bors r=jieyouxu

rust-bors · 2026-07-31T08:51:42Z

📌 Commit c019f18 has been approved by jieyouxu

It is now in the queue for this repository.

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

…uwer Rollup of 21 pull requests Successful merges: - #160100 (Add "system" option to `override-allocator` directive) - #159675 (rustc: Support `--jobs` options for limiting parallelism in various parts of the compiler) - #159999 (Fix invalidation of stdlib in bootstrap when using non-LLVM codegen backends) - #160233 (Bubble bad path error while parsing field to avoid unecessary second error) - #160272 (rustc_metadata: Move native library search code to `rustc_codegen_ssa`) - #154202 (rustfmt: Format `cfg_select!`) - #158835 (rustc_passes: lint unused `#[path]` attributes on inline modules) - #159520 (Suggest `Vec<T>` instead of `[T]`) - #160034 (Move "macro only" check for `#[allow_internal_unsafe/unstable]` to attribute parser) - #160066 (rustc_middle: lint attribute cleanups) - #160085 (Remove various superfluous lint attributes) - #160113 (Coalesce `rustc_on_unimplemented` attributes and lint malformed filters) - #160119 (fix query cycle in `coroutine_hidden_types` for the next solver) - #160147 (tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc`) - #160157 (Remove outdated comments from `va_list.rs`) - #160159 (More accurately check for interior mutability in `invalid_reference_casting` lint) - #160208 (rustdoc: Fix crash when trying to list attributes on an opaque type) - #160244 (Rename splat to rustc_splat in error messages) - #160246 (dont fire `unused_mut` on `&pin mut self`) - #160247 (Configure backport nominations for rustfmt) - #160274 (renovate: update lock files weekly)

@jieyouxu

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` The number of threads is now passed by compiletest through `--parallel-frontend-threads=N` in parallel testing runs. If it becomes necessary, we'll be able to set a larger number of threads or iterations for the `ui/parallel-rustc` tests specifically. r? @jieyouxu

rustbot assigned jieyouxu Jul 29, 2026

rustbot added A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jul 29, 2026

petrochenkov commented Jul 29, 2026

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jieyouxu approved these changes Jul 30, 2026

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rust-bors Bot 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 Jul 30, 2026

jhpratt mentioned this pull request Jul 30, 2026

Rollup of 7 pull requests #160199

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JonathanBrouwer mentioned this pull request Jul 30, 2026

Rollup of 8 pull requests #160207

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rust-bors Bot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jul 30, 2026

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rust-bors Bot pushed a commit that referenced this pull request Jul 30, 2026

Auto merge of #160147 - petrochenkov:nozthreadsts, r=<try>

d63d273

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` try-job: x86_64-gnu-parallel-frontend

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tests: Remove -Zthreads options from tests in ui/parallel-rustc

c019f18

petrochenkov force-pushed the nozthreadsts branch from 715f44b to c019f18 Compare July 31, 2026 08:51

rust-bors Bot 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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 31, 2026

JonathanBrouwer mentioned this pull request Jul 31, 2026

Rollup of 11 pull requests #160273

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JonathanBrouwer mentioned this pull request Jul 31, 2026

Rollup of 17 pull requests #160278

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JonathanBrouwer mentioned this pull request Jul 31, 2026

Rollup of 21 pull requests #160283

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JonathanBrouwer mentioned this pull request Jul 31, 2026

Rollup of 22 pull requests #160284

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tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc` - #160147

tests: Remove `-Zthreads` options from tests in `ui/parallel-rustc`#160147
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