From b4142f3075f89aa435cc84e0f2d10e5fe5f0b7b9 Mon Sep 17 00:00:00 2001
From: Daniel Szoke <daniel.szoke@sentry.io>
Date: Fri, 8 Aug 2025 12:12:37 +0200
Subject: [PATCH] build: Pin Rust toolchain minor version

Pin to the latest Rust toolchain minor version.

Closes #2686
---
 .github/workflows/lint.yml | 10 +++++-----
 .github/workflows/test.yml |  6 ++++--
 rust-toolchain.toml        |  4 ++++
 3 files changed, 13 insertions(+), 7 deletions(-)
 create mode 100644 rust-toolchain.toml

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index ab3951fd23..3658d3bdc1 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -45,11 +45,11 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # 4.2.2
 
-      - name: Install Rust Toolchain
-        run: rustup toolchain install stable --profile minimal --component clippy --component rustfmt --no-self-update
-
-      - name: Add Target
-        run: rustup target add ${{ matrix.target }}
+      - name: Setup Rust Toolchain
+        run: |
+          rustup set profile minimal
+          rustup component add clippy rustfmt
+          rustup target add ${{ matrix.target }}
 
       - name: Install musl-gcc (Linux only)
         if: matrix.os == 'ubuntu-24.04'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 318234c9bb..63f6c247fd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -46,8 +46,10 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # 4.2.2
 
-      - name: Add Target
-        run: rustup target add ${{ matrix.target }}
+      - name: Setup Rust Toolchain
+        run: |
+          rustup set profile minimal
+          rustup target add ${{ matrix.target }}
 
       - name: Install musl-gcc (Linux only)
         if: matrix.os == 'ubuntu-24.04'
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000000..6697c67365
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+# We pin the minor version to prevent new Clippy lints from breaking CI.
+# But, we still want to pick up new patch versions.
+channel = "1.89"