fix Aggregator::finish for trait objects

1 files changed, 3 insertions, 2 deletions

diff --git a/src/main.rs b/src/main.rs
index ad996ea..cb914d3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -384,7 +384,7 @@ fn build_filter(expr_string: &str) -> Result<Box<dyn LogFilter>> {
 fn grep(opt: &Opt, filter: &dyn LogFilter) -> Result<()> {
     let pipeline = output::build_pipeline(opt);
     let pipeline_ref = &pipeline;
-    rayon::scope(|s| {
+    let result: Result<()> = rayon::scope(|s| {
         let walker = WalkDir::new(&opt.path);
         for entry in walker {
             let entry = entry?;
@@ -406,7 +406,8 @@ fn grep(opt: &Opt, filter: &dyn LogFilter) -> Result<()> {
             });
         }
         Ok(())
-    }) as Result<()>;
+    });
+    result?;
     pipeline.finish();
     Ok(())
 }