From 6e1c1dd0fcc31ce44016063676765503dd962cdc Mon Sep 17 00:00:00 2001
From: rob thijssen <grenade@rob.tn>
Date: Wed, 27 May 2026 12:55:18 +0300
Subject: [PATCH] ci: retry clippy + test up to 3 times on spurious sccache
 failures
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sccache occasionally fails mid-compile with race-condition errors that
clear on a re-run without any code changes. Rather than tracking that
down right now, wrap the two affected steps in a bash loop that retries
up to three times with a 5-second pause. Real failures still surface;
they just take ~10s longer to fail.

fmt is left as a single invocation — it's a one-shot syntactic check,
not a build, and isn't subject to the same sccache races.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 .gitea/workflows/ci.yml | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 35670db..26dcfc3 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -47,7 +47,25 @@ jobs:
     runs-on: rust
     steps:
       - uses: actions/checkout@v4
-      - run: cargo clippy --workspace -- -D warnings
+      # sccache occasionally fails with spurious race-condition errors;
+      # retrying the same invocation succeeds without code changes.
+      # Allow up to 3 attempts before declaring real failure.
+      - name: Clippy (with retry)
+        run: |
+          for attempt in 1 2 3; do
+            echo "::group::clippy attempt ${attempt}"
+            if cargo clippy --workspace -- -D warnings; then
+              echo "::endgroup::"
+              exit 0
+            fi
+            echo "::endgroup::"
+            echo "clippy failed on attempt ${attempt}"
+            if [ "${attempt}" -lt 3 ]; then
+              sleep 5
+            fi
+          done
+          echo "clippy failed after 3 attempts"
+          exit 1
       - run: sccache --show-stats
 
   test:
@@ -55,7 +73,23 @@ jobs:
     runs-on: rust
     steps:
       - uses: actions/checkout@v4
-      - run: cargo test --workspace
+      # See the clippy job for why this is retried.
+      - name: Test (with retry)
+        run: |
+          for attempt in 1 2 3; do
+            echo "::group::test attempt ${attempt}"
+            if cargo test --workspace; then
+              echo "::endgroup::"
+              exit 0
+            fi
+            echo "::endgroup::"
+            echo "test failed on attempt ${attempt}"
+            if [ "${attempt}" -lt 3 ]; then
+              sleep 5
+            fi
+          done
+          echo "test failed after 3 attempts"
+          exit 1
       - run: sccache --show-stats
 
   srpm-cortex: