ci: integration tests: print clippy run output and set LD_LIBRARY_PATH to rustc sysroot

Author: matthiaskrgr

Diff for: .github/workflows/clippy_bors.yml

@@ -30,6 +30,11 @@ jobs:
       with:
         ref: ${{ github.ref }}
 
+    - name: Set LD_LIBRARY_PATH
+      run: |
+        SYSROOT=$(rustc --print sysroot)
+        echo "LD_LIBRARY_PATH=${SYSROOT}/lib${LD_LIBRARY_PATH+:${LD_LIBRARY_PATH}}" >> $GITHUB_ENV
+
     # Run
     - name: Check Changelog
       run: |

Diff for: tests/integration.rs

@@ -65,6 +65,10 @@ fn integration_test() {
         .expect("unable to run clippy");
 
     let stderr = String::from_utf8_lossy(&output.stderr);
+
+    // debug:
+    eprintln!("{stderr}");
+
     if let Some(backtrace_start) = stderr.find("error: internal compiler error") {
         static BACKTRACE_END_MSG: &str = "end of query stack";
         let backtrace_end = stderr[backtrace_start..]