Sure we can download llvm in CI, if we're foolish enough

Author: fasterthanlime

src/bootstrap/src/core/config/config.rs

@@ -3281,9 +3281,9 @@ impl Config {
 
                 if b && self.is_running_on_ci {
                     // On CI, we must always rebuild LLVM if there were any modifications to it
-                    panic!(
-                        "`llvm.download-ci-llvm` cannot be set to `true` on CI. Use `if-unchanged` instead."
-                    );
+                    // panic!(
+                    //     "`llvm.download-ci-llvm` cannot be set to `true` on CI. Use `if-unchanged` instead."
+                    // );
                 }
 
                 // If download-ci-llvm=true we also want to check that CI llvm is available