diff --git a/.gitea/workflows/build-and-test.yml b/.gitea/workflows/build-and-test.yml
index 80a287b..dc27d52 100644
--- a/.gitea/workflows/build-and-test.yml
+++ b/.gitea/workflows/build-and-test.yml
@@ -157,6 +157,19 @@ jobs:
       - name: Test
         run: cargo test --workspace
 
+      # The runner has one 99 GB disk shared with its images, and this job
+      # ended at 92 GB (2.1 GB free) on v0.18.0's run; v0.18.1's release
+      # build then died with "No space left on device". The test executables
+      # and examples in target/debug are the largest things in it, are never
+      # reused (a changed source relinks them) and are not what the cache is
+      # for — the dependency rlibs are — so they go before the release build
+      # rather than competing with it.
+      - name: Free the test binaries before the release build
+        run: |
+          find target/debug/deps -maxdepth 1 -type f -executable -delete
+          rm -rf target/debug/examples target/debug/incremental
+          df -h /workspace 2>/dev/null || df -h .
+
       - name: Build
         run: cargo build --workspace --release