Proper error handling for the exporter

src/hyperfine/export/json.rs

@@ -13,14 +13,7 @@ pub struct JsonExporter {}
 
 impl Exporter for JsonExporter {
     fn serialize(&self, results: &Vec<ExportEntry>) -> Result<String> {
-        let serialized = to_string_pretty(&HyperfineSummary { results });
+        to_string_pretty(&HyperfineSummary { results }).map_err(|e| Error::new(ErrorKind::Other, e))
-
-        serialized.map_err(|e| {
-            Error::new(
-                ErrorKind::Other,
-                format!("Error while serializing to JSON: {:}", e),
-            )
-        })
     }
 }
 

src/main.rs

@@ -207,7 +207,13 @@ fn main() {
 
     match res {
         Ok(timing_results) => {
-            export_manager.write_results(timing_results).unwrap();
+            let ans = export_manager.write_results(timing_results);
+            if let Err(e) = ans {
+                error(&format!(
+                    "The following error occured while exporting: {}",
+                    e.description()
+                ));
+            }
         }
         Err(e) => error(e.description()),
     }