add relnotes for 1.97.0 by BoxyUwU · Pull Request #158871 · rust-lang/rust

BoxyUwU · 2026-07-06T17:33:01Z

cc @rust-lang/release
@rustbot ping relnotes-interest-group

r? mark-simulacrum

rustbot · 2026-07-06T17:33:05Z

Hi relnotes-interest-group, this issue/PR could use some help in reviewing /
adjusting release notes. Could you take a look if available? Thanks <3

cc @alex-semenyuk @jieyouxu @joshtriplett @lcnr @traviscross

Mark-Simulacrum

r=me with nits fixed

View changes since this review

[stable] 1.97 release No last minute backports this time around. Pulled in release notes from #158871, leaving that pending for a bit more time to get feedback before we approve it for mainline. r? me

BoxyUwU · 2026-07-08T11:37:57Z

@bors squash

@BoxyUwU

* add relnotes for 1.97.0 * Apply nits * Update RELEASES.md * Apply suggestion from @BoxyUwU Co-authored-by: Boxy <rust@boxyuwu.dev> Co-authored-by: Mark Rousskov <mark.simulacrum@gmail.com> Co-authored-by: Tim (Theemathas) Chirananthavat <theemathas@gmail.com>

rust-bors · 2026-07-08T11:38:20Z

🔨 4 commits were squashed into 9fa33b1.

BoxyUwU · 2026-07-08T11:41:17Z

@bors r=mark-simulacrum

rust-bors · 2026-07-08T11:41:20Z

📌 Commit 9fa33b1 has been approved by mark-simulacrum

It is now in the queue for this repository.

Mark-Simulacrum · 2026-07-08T12:47:17Z

@bors p=5 rollup

@rustbot

…mulacrum add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

…uwer Rollup of 18 pull requests Successful merges: - #158871 (add relnotes for 1.97.0) - #150946 (intrinsics: Add a fallback for non-const libm float functions) - #158617 (allow mGCA const arguments to fall back to anon consts) - #158645 (Fix splat ICEs and ban it in closures) - #158655 (Fix coroutine MIR saved local remapping) - #158666 (Carry the `b_offset` inside `BackendRepr::ScalarPair`) - #158920 (Update wasm-component-ld to 0.5.26) - #158926 (wrapping_sh* methods: clarify underspecified reference) - #158927 (add core test run with `-Zforce-intrinsic-fallback`) - #151379 (Stabilize `VecDeque::retain_back` from `truncate_front`) - #158807 (Add regression test for CString::clone_into unwind safety) - #158862 (Fix the span for parameter suggestion ) - #158883 (tests: fix enum-match.rs to handle LLVM 23) - #158894 (Make the ordering of non-terminal binds in ambiguity error messages deterministic) - #158902 (add codegen test for range length bound propagation) - #158913 (Update `browser-ui-test` version to `0.24.1`) - #158935 (std: support real fd methods on Emscripten) - #158951 (Merge three `MaxUniverse`s into one)

@rustbot

add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

rust-log-analyzer · 2026-07-08T16:17:06Z

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

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

test [debuginfo-gdb] tests/debuginfo/zst-interferes-with-prologue.rs ... ok

failures:

---- [debuginfo-gdb] tests/debuginfo/function-call.rs stdout ----
NOTE: compiletest thinks it is using GDB version 12001000
------gdb stdout------------------------------
GNU gdb (Ubuntu 12.1-0ubuntu1~22.04.2) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
Breakpoint 1 at 0x1b42: file /checkout/tests/debuginfo/function-call.rs, line 36.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Breakpoint 1, function_call::main () at /checkout/tests/debuginfo/function-call.rs:36
36     zzz(); // #break

------gdb stderr------------------------------
/checkout/obj/build/x86_64-unknown-linux-gnu/test/debuginfo/function-call.gdb/function-call.debugger.script:11: Error in sourced command file:
Couldn't write extended state status: Bad address.

------------------------------------------

error: gdb failed to execute
status: exit status: 1
command: PYTHONPATH="/checkout/src/etc" "/usr/bin/gdb" "-quiet" "-batch" "-nx" "-command=/checkout/obj/build/x86_64-unknown-linux-gnu/test/debuginfo/function-call.gdb/function-call.debugger.script"
--- stdout -------------------------------
GNU gdb (Ubuntu 12.1-0ubuntu1~22.04.2) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
Breakpoint 1 at 0x1b42: file /checkout/tests/debuginfo/function-call.rs, line 36.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Breakpoint 1, function_call::main () at /checkout/tests/debuginfo/function-call.rs:36
36     zzz(); // #break
------------------------------------------
--- stderr -------------------------------
/checkout/obj/build/x86_64-unknown-linux-gnu/test/debuginfo/function-call.gdb/function-call.debugger.script:11: Error in sourced command file:
Couldn't write extended state status: Bad address.
------------------------------------------

JonathanBrouwer · 2026-07-08T16:20:10Z

@bors yield
Yielding to enclosing rollup

jhpratt · 2026-07-09T00:45:49Z

@bors yield

Running a rollup=never while I figure out the rollup failure.

rust-bors · 2026-07-09T00:45:52Z

Auto build was cancelled. Cancelled workflows:

https://github.com/rust-lang/rust/actions/runs/28985582983

The next pull request likely to be tested is #155114.

Mark-Simulacrum · 2026-07-09T00:47:53Z

Note that it's relatively important this lands soon (ideally before the release tomorrow morning, though shortly afterward is probably OK too). because it'll gate the releases GitHub page rendering relnotes.

jhpratt · 2026-07-09T00:53:58Z

Absolutely! I was crafting a rollup that should have no issues in an effort to land this specifically. It seems silly to run the full CI just for relnotes. It actually isn't a terrible idea to bypass most checks (probably everything but docs?) if this is the only file changed.

@rustbot

…mulacrum add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

Mark-Simulacrum · 2026-07-09T01:05:50Z

It actually isn't a terrible idea to bypass most checks (probably everything but docs?) if this is the only file changed.

Unfortunately we're not really equipped to not run all the dist-* runners (e.g., that would break nightly), at least today. I think rollups are definitely the way to go for this, just want to make sure the rough priority is communicated :)

jhpratt · 2026-07-09T02:44:02Z

@bors p=10 rollup=never

@rustbot

add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

rust-log-analyzer · 2026-07-09T04:27:41Z

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

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

   Compiling rustc_hir_analysis v0.0.0 (/checkout/compiler/rustc_hir_analysis)
[RUSTC-TIMING] rustc_sanitizers test:false 21.043
   Compiling rustc_pattern_analysis v0.0.0 (/checkout/compiler/rustc_pattern_analysis)

##[error]The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.
Session terminated, killing shell...::group::Clock drift check
  local time: Thu Jul  9 04:27:26 UTC 2026
  network time: Thu, 09 Jul 2026 04:27:27 GMT
##[endgroup]
 ...killed.
##[error]The operation was canceled.

jhpratt · 2026-07-09T04:28:48Z

@bors treeclosed=10 note="need relnotes"

@bors retry

rust-bors · 2026-07-09T04:28:51Z

Tree closed for PRs with priority less than 10.

rust-bors · 2026-07-09T04:28:51Z

❗ You can only retry pull requests that are approved and have a previously failed auto build.

Hint: There is currently a pending auto build on this PR. To cancel it, run @bors cancel.

rust-bors · 2026-07-09T04:32:40Z

💔 Test for 69eb089 failed: CI. Failed job:

auto - x86_64-gnu (web logs, enhanced plaintext logs)

jhpratt · 2026-07-09T04:33:27Z

@bors retry

jhpratt · 2026-07-09T05:44:34Z

@bors treeclosed-

rust-bors · 2026-07-09T05:44:37Z

Tree is now open for merging.

rust-bors · 2026-07-09T07:55:34Z

☀️ Test successful - CI
Approved by: mark-simulacrum
Duration: 3h 21m 50s
Pushing 07074cf to main...

rust-log-analyzer · 2026-07-09T08:00:11Z

A job failed! Check out the build log: (web) (plain enhanced) (plain)

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

   Compiling rustls-webpki v0.102.8
   Compiling ureq v3.0.8
   Compiling citool v0.1.0 (/home/runner/work/rust/rust/src/ci/citool)
    Finished `release` profile [optimized] target(s) in 2m 14s
     Running `target/release/citool post-merge-report 71c64160bd0f471bffdbdf7061fd62bab053d5b4 07074cfe1d991fe06b7fc613bbbd1dd9d0d37c80`
Downloading metrics of job aarch64-gnu
Downloading metrics of job aarch64-gnu-debug
Downloading metrics of job arm-android
Downloading metrics of job armhf-gnu
Downloading metrics of job dist-aarch64-linux
Downloading metrics of job dist-android
Downloading metrics of job dist-arm-linux-gnueabi

rust-timer · 2026-07-09T08:38:03Z

Finished benchmarking commit (07074cf): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.2%	[0.2%, 0.2%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary 2.3%, secondary 2.9%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.3%	[2.3%, 2.3%]	1
Regressions ❌ (secondary)	2.9%	[2.9%, 2.9%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.3%	[2.3%, 2.3%]	1

Cycles

Results (primary 3.1%, secondary 2.9%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.1%	[3.1%, 3.1%]	1
Regressions ❌ (secondary)	2.9%	[2.9%, 2.9%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	3.1%	[3.1%, 3.1%]	1

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 490.207s -> 489.352s (-0.17%)
Artifact size: 388.42 MiB -> 388.43 MiB (0.00%)

rustbot assigned Mark-Simulacrum Jul 6, 2026

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-release Relevant to the release subteam, which will review and decide on the PR/issue. labels Jul 6, 2026

BoxyUwU mentioned this pull request Jul 6, 2026

Draft release notes for 1.97.0 #158353

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Mark-Simulacrum approved these changes Jul 6, 2026

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[stable] 1.97 release #158832

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add relnotes for 1.97.0

9fa33b1

* add relnotes for 1.97.0 * Apply nits * Update RELEASES.md * Apply suggestion from @BoxyUwU Co-authored-by: Boxy <rust@boxyuwu.dev> Co-authored-by: Mark Rousskov <mark.simulacrum@gmail.com> Co-authored-by: Tim (Theemathas) Chirananthavat <theemathas@gmail.com>

rust-bors Bot force-pushed the relnotes_1_97_0 branch from 56a55da to 9fa33b1 Compare July 8, 2026 11:38

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JonathanBrouwer mentioned this pull request Jul 8, 2026

Rollup of 18 pull requests #158958

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rust-bors Bot pushed a commit that referenced this pull request Jul 8, 2026

Auto merge of #158871 - BoxyUwU:relnotes_1_97_0, r=mark-simulacrum

92daebb

add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 9, 2026

Rollup merge of rust-lang#158871 - BoxyUwU:relnotes_1_97_0, r=mark-si…

09f5eb5

…mulacrum add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

jhpratt mentioned this pull request Jul 9, 2026

Rollup of 25 pull requests #158989

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rust-bors Bot pushed a commit that referenced this pull request Jul 9, 2026

Auto merge of #158871 - BoxyUwU:relnotes_1_97_0, r=mark-simulacrum

69eb089

add relnotes for 1.97.0 cc @rust-lang/release @rustbot ping relnotes-interest-group r? mark-simulacrum

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rust-bors Bot added merged-by-bors This PR was explicitly merged by bors. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jul 9, 2026

rust-bors Bot merged commit 07074cf into rust-lang:main Jul 9, 2026
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rustbot added this to the 1.99.0 milestone Jul 9, 2026

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Overall result: ❌ regressions - no action needed

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