Update Rust toolchains to nightly-2026-04-27 by hash-worker[bot] · Pull Request #8682 · hashintel/hash

hash-worker · 2026-04-30T11:32:45Z

This PR contains the following updates:

Package	Update	Change
rust	patch	`2026-04-13` → `2026-04-27`

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vercel · 2026-04-30T11:32:49Z

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Project	Deployment	Actions	Updated (UTC)
hash	Ready	Preview, Comment	Apr 30, 2026 0:24am

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cursor · 2026-04-30T11:32:52Z

PR Summary

Medium Risk
Toolchain bumps can introduce new compiler/lint behavior and break builds in unrelated crates; the code changes themselves are small and largely type/import/const-qualification adjustments.

Overview
Updates the pinned Rust toolchain from nightly-2026-04-13 to nightly-2026-04-27 and refreshes error-stack rust-version badges to match.

Includes small compatibility cleanups: switch some ErrorKind::NotFound checks to core::io::ErrorKind, adjust test imports in harpc session server tests, and mark several slice-accessor methods as const fn (e.g., Labels::as_slice, SwitchTargets::{targets,targets_mut,values}).

^{Reviewed by Cursor Bugbot for commit 2f0d2b8. Bugbot is set up for automated code reviews on this repo. Configure here.}

augmentcode · 2026-04-30T11:33:48Z

🤖 Augment PR Summary

Summary: Updates the repo Rust toolchain to nightly-2026-04-27 (from nightly-2026-04-13).

Changes: Aligns rust-toolchain.toml and the error-stack Rust version badges/documentation headers to reference the new nightly snapshot.

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augmentcode

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TimDiekmann

Should finally fix the bug about incremental compilation.

codecov · 2026-04-30T11:37:39Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.08%. Comparing base (891f36f) to head (2f0d2b8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8682      +/-   ##
==========================================
- Coverage   62.08%   62.08%   -0.01%     
==========================================
  Files        1341     1341              
  Lines      135072   135072              
  Branches     5744     5744              
==========================================
- Hits        83856    83855       -1     
- Misses      50308    50309       +1     
  Partials      908      908

Flag	Coverage Δ
apps.hash-ai-worker-ts	`1.41% <ø> (ø)`
apps.hash-api	`0.00% <ø> (ø)`
local.hash-backend-utils	`0.00% <ø> (ø)`
local.hash-graph-sdk	`9.63% <ø> (ø)`
local.hash-isomorphic-utils	`0.00% <ø> (ø)`
rust.harpc-tower	`67.03% <ø> (ø)`
rust.hash-graph-api	`2.52% <ø> (ø)`
rust.hashql-ast	`87.23% <ø> (ø)`
rust.hashql-compiletest	`29.63% <ø> (ø)`
rust.hashql-core	`82.29% <ø> (ø)`
rust.hashql-diagnostics	`72.43% <100.00%> (ø)`
rust.hashql-eval	`69.13% <ø> (ø)`
rust.hashql-hir	`89.06% <ø> (ø)`
rust.hashql-mir	`92.64% <100.00%> (ø)`
rust.hashql-syntax-jexpr	`94.05% <ø> (ø)`

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codspeed-hq · 2026-04-30T11:42:42Z

Merging this PR will degrade performance by 20.54%

⚡ 1 improved benchmark
❌ 5 regressed benchmarks
✅ 74 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	`BASE`	`HEAD`	Efficiency
👁	`pattern_match_constant`	180 ns	150.8 ns	+19.34%
❌	`bit_matrix/dense/transitive_closure[200]`	754.4 µs	907.1 µs	-16.83%
❌	`bit_matrix/dense/transitive_closure[16]`	4.8 µs	5.9 µs	-19.31%
❌	`bit_matrix/dense/transitive_closure[64]`	56.4 µs	71 µs	-20.54%
❌	`bit_matrix/sparse/union_rows[200]`	12.1 µs	13.8 µs	-12.55%
❌	`bit_matrix/sparse/union_rows[64]`	4 µs	4.5 µs	-10.93%

_{Comparing deps/rs/rust-toolchains (2f0d2b8) with main (891f36f)}

TimDiekmann · 2026-04-30T12:09:08Z

@copilot fix the linting issues

Agent-Logs-Url: https://github.com/hashintel/hash/sessions/ef84b90d-bb07-4ff6-a47f-52ffd18f8e37 Co-authored-by: TimDiekmann <21277928+TimDiekmann@users.noreply.github.com>

CLAassistant · 2026-04-30T12:18:29Z

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
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Copilot · 2026-04-30T12:18:53Z

@copilot fix the linting issues

Fixed in commit 2f0d2b8. The changes address 4 clippy warnings introduced by the new nightly:

clippy::missing_const_for_fn: Added const to targets, targets_mut, and values in hashql/mir/src/body/terminator/switch_int.rs, and to as_slice in hashql/diagnostics/src/diagnostic/label.rs
clippy::std_instead_of_core: Changed std::io::ErrorKind to core::io::ErrorKind in harpc/net/src/session/server/test.rs and repo-chores/rust/src/sync_turborepo/mod.rs

See the output of git range-diff at https://github.com/hashintel/hash/actions/runs/25164909600

 #![expect(clippy::significant_drop_tightening, reason = "test code")]
 use alloc::sync::Arc;
 use core::{
+    io::ErrorKind,


        Ok(contents) => serde_json::from_str(&contents)
            .change_context_lazy(|| SyncTurborepoError::ParseFile(path.to_owned())),
-        Err(err) if err.kind() == std::io::ErrorKind::NotFound => {
+        Err(err) if err.kind() == core::io::ErrorKind::NotFound => {


        }
        Ok(_) => {}
-        Err(err) if err.kind() == std::io::ErrorKind::NotFound => {}
+        Err(err) if err.kind() == core::io::ErrorKind::NotFound => {}


TimDiekmann · 2026-04-30T12:31:07Z

Copilot missed half of the stuff, great. Very useful.

hash-worker · 2026-05-04T05:21:31Z

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Update Rust toolchains to nightly-2026-04-27

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hash-worker Bot enabled auto-merge April 30, 2026 11:32

github-actions Bot added area/deps Relates to third-party dependencies (area) area/infra Relates to version control, CI, CD or IaC (area) area/libs > error-stack Affects the `error-stack` crate (library) area/libs Relates to first-party libraries/crates/packages (area) labels Apr 30, 2026

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Fix clippy linting issues in nightly-2026-04-27

2f0d2b8

Agent-Logs-Url: https://github.com/hashintel/hash/sessions/ef84b90d-bb07-4ff6-a47f-52ffd18f8e37 Co-authored-by: TimDiekmann <21277928+TimDiekmann@users.noreply.github.com>

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Comment thread libs/@local/harpc/net/src/session/server/test.rs

#![expect(clippy::significant_drop_tightening, reason = "test code")]

use alloc::sync::Arc;

use core::{

io::ErrorKind,

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Update Rust toolchains to nightly-2026-04-27#8682

Update Rust toolchains to nightly-2026-04-27#8682
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