Rollup of 5 pull requests by jhpratt · Pull Request #160128 · rust-lang/rust

jhpratt · 2026-07-29T08:50:27Z

Successful merges:

Add semver check test command for checking API compatibility of stdlib #159671 (Add semver check test command for checking API compatibility of stdlib)
Preserve placeholder ambiguity during normalization #159964 (Preserve placeholder ambiguity during normalization)
Show jobs where a given test was executed in test-dashboard #159994 (Show jobs where a given test was executed in test-dashboard)
Remove various superfluous lint attributes #160085 (Remove various superfluous lint attributes)
add additional license option for third-party dependencies #160123 (add additional license option for third-party dependencies)

Signed-off-by: Amirhossein Akhlaghpour <m9.akhlaghpoor@gmail.com>

@obi1kenobi

Add semver check test command for checking API compatibility of stdlib This PR adds a new test to bootstrap (not executed by default at the moment) that checks the API compatibility of the standard library using the https://github.com/obi1kenobi/cargo-semver-checks tool. The command can be executed using `x test std-semver-check`. (Note: I realized that `x dist rust-docs-json` executed twice in a row invalidates Cargo cache for some reason, that is a separate issue though). The test is not yet executed on CI, I would do that in a separate PR (maybe pending a t-libs FCP or something). The test checks that c-s-c is installed, and then uses git to lookup a parent baseline commit (in a future extension, we should make the baseline commit be configurable through `config.toml`). Then it downloads the corresponding `rust-docs-json` component of that commit from CI and extracts it. It generates the same JSON docs component from local sources, and then runs c-s-c on those two JSON files to compare their API. Output when API stability is broken: ``` Checking semver compatibility of core Checking <unknown> v1.99.0-nightly (d527bc9 2026-07-20) -> v1.99.0-dev (assume minor change) Checked [ 1.282s] 196 checks: 196 pass, 57 skip Summary no semver update required Finished [ 2.368s] <unknown> Checking semver compatibility of alloc Checking <unknown> v1.99.0-nightly (d527bc9 2026-07-20) -> v1.99.0-dev (assume minor change) Checked [ 0.030s] 196 checks: 196 pass, 57 skip Summary no semver update required Finished [ 0.127s] <unknown> Checking semver compatibility of std Checking <unknown> v1.99.0-nightly (d527bc9 2026-07-20) -> v1.99.0-dev (assume minor change) Checked [ 0.055s] 196 checks: 195 pass, 1 fail, 0 warn, 57 skip --- failure function_missing: pub fn removed or renamed --- Description: A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely. ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.49.0/src/lints/function_missing.ron Failed in: function std::process::id, previously in file library/std/src/process.rs:2656 Summary semver requires new major version: 1 major and 0 minor checks failed Finished [ 0.243s] <unknown> ``` CC @obi1kenobi @Amanieu r? @jieyouxu

…, r=lcnr Preserve placeholder ambiguity during normalization Fixes rust-lang#159896

@jieyouxu

…ouxu Show jobs where a given test was executed in `test-dashboard` This lets us see the specific set of jobs where a given test was executed on CI. This should be quite useful e.g. for debugging where we run debuginfo tests. To test: ```bash $ cargo run --release --manifest-path src/ci/citool/Cargo.toml -- test-dashboard 008fa22 --output-dir test-dashboard ``` r? @jieyouxu

Remove various superfluous lint attributes

…ouxu add additional license option for third-party dependencies

jhpratt · 2026-07-29T08:50:49Z

@bors r+ rollup=never p=5

@bors try jobs=dist-various-1,test-various,x86_64-gnu-aux,x86_64-gnu-llvm-21-3,x86_64-msvc-1,aarch64-apple,x86_64-mingw-1,i686-msvc-*

rust-bors · 2026-07-29T08:50:52Z

📌 Commit 5aa0ff6 has been approved by jhpratt

It is now in the queue for this repository.

Rollup of 5 pull requests try-job: dist-various-1 try-job: test-various try-job: x86_64-gnu-aux try-job: x86_64-gnu-llvm-21-3 try-job: x86_64-msvc-1 try-job: aarch64-apple try-job: x86_64-mingw-1 try-job: i686-msvc-*

rust-log-analyzer · 2026-07-29T09:27:03Z

The job x86_64-gnu-llvm-21-3 failed! Check out the build log: (web) (plain enhanced) (plain)

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

---- [ui] tests/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896.rs stdout ----

error: Error: expected failure status (Some(1)) but received status Some(101).
status: exit status: 101
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/checkout/tests/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2021" "-Znext-solver=globally" "-Zassumptions-on-binders"
stdout: none
--- stderr -------------------------------

thread 'rustc' (34627) panicked at compiler/rustc_trait_selection/src/regions.rs:35:17:
assertion failed: !infcx.next_trait_solver() || !type_outlives.has_non_rigid_aliases()
stack backtrace:
   0: __rustc::rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic

rust-bors · 2026-07-29T09:28:57Z

PR #159964, which is a member of this rollup, was unapproved.

This rollup was thus unapproved.

rust-log-analyzer · 2026-07-29T09:30:49Z

The job aarch64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

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

---- [ui] tests/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896.rs stdout ----

error: Error: expected failure status (Some(1)) but received status Some(101).
status: exit status: 101
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/assumptions_on_binders/ambiguous-placeholder-certainty-issue-159896" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "incomplete_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers" "--edition=2021" "-Znext-solver=globally" "-Zassumptions-on-binders"
stdout: none
--- stderr -------------------------------

thread 'rustc' (31347) panicked at compiler/rustc_trait_selection/src/regions.rs:35:17:
assertion failed: !infcx.next_trait_solver() || !type_outlives.has_non_rigid_aliases()
stack backtrace:
   0: __rustc::rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic

rust-bors · 2026-07-29T11:34:14Z

💔 Test for e7f3407 failed: CI. Failed jobs:

try - aarch64-apple (web logs, enhanced plaintext logs)
try - i686-msvc-1 (web logs, enhanced plaintext logs)
try - x86_64-gnu-llvm-21-3 (web logs, enhanced plaintext logs)
try - x86_64-mingw-1 (web logs, enhanced plaintext logs)
try - x86_64-msvc-1 (web logs, enhanced plaintext logs)

amirHdev and others added 11 commits July 26, 2026 15:27

fix: preserve placeholder ambiguity during normalization

ba4e2f6

Signed-off-by: Amirhossein Akhlaghpour <m9.akhlaghpoor@gmail.com>

Show jobs where a given test was executed in test-dashboard

0ac1461

Add ./x test std-semver-check test command

1544f42

Add CLI snapshot test for semver check step

73ba963

Remove various superfluous lint attributes

6db37c2

add additional license option for third-party dependencies

d40bb6d

Rollup merge of rust-lang#159964 - amirHdev:fix-placeholder-certainty…

7e47aea

…, r=lcnr Preserve placeholder ambiguity during normalization Fixes rust-lang#159896

Rollup merge of rust-lang#160085 - mejrs:bye_lints, r=mu001999

a1dbad8

Remove various superfluous lint attributes

Rollup merge of rust-lang#160123 - marcoieni:tidy-add-license, r=jiey…

5aa0ff6

…ouxu add additional license option for third-party dependencies

rust-bors Bot added the rollup A PR which is a rollup label Jul 29, 2026

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 29, 2026

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jhpratt mentioned this pull request Jul 29, 2026

Preserve placeholder ambiguity during normalization #159964

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jhpratt closed this Jul 29, 2026

rust-bors Bot removed the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Jul 29, 2026

rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jul 29, 2026

jhpratt deleted the rollup-NVitVha branch July 29, 2026 09:28

rust-bors Bot added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jul 29, 2026

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Rollup of 5 pull requests - #160128

Rollup of 5 pull requests#160128
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