Some minor refinements

2 files changed, 3 insertions, 3 deletions

diff --git a/src/backends/run_error.rs b/src/backends/run_error.rs
index 68f0495..6203bbe 100644
--- a/src/backends/run_error.rs
+++ b/src/backends/run_error.rs
@@ -22,8 +22,8 @@ impl From<WaitError> for RunError {
 impl std::fmt::Display for RunError {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         match &*self {
-            RunError::IoError(e) => e.fmt(f),
-            RunError::WaitError(e) => e.fmt(f)
+            RunError::IoError(e) => write!(f, "I/O error: {}", e),
+            RunError::WaitError(e) => write!(f, "Wait error: {}", e),
         }
     }
 }
diff --git a/src/wait/rusage_ffi.rs b/src/wait/rusage_ffi.rs
index 0a9117a..d77884e 100644
--- a/src/wait/rusage_ffi.rs
+++ b/src/wait/rusage_ffi.rs
@@ -62,4 +62,4 @@ impl Rusage {
             unimplemented!();
         }
     }
-}
\ No newline at end of file
+}