feat(crosstarget-utils): replace every manual "Display" instance with…

… "derive_more"

libs/crosstarget-utils/src/common/spawn.rs

@@ -1,12 +1,8 @@
-use std::fmt::Display;
+use derive_more::Display;
 
-#[derive(Debug)]
-pub struct SpawnError;
+#[derive(Debug, Display)]
+#[display(fmt = "Failed to spawn a future")]
 
-impl Display for SpawnError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "Failed to spawn a future")
-    }
-}
+pub struct SpawnError;
 
 impl std::error::Error for SpawnError {}

libs/crosstarget-utils/src/common/timeout.rs

@@ -1,12 +1,7 @@
-use std::fmt::Display;
+use derive_more::Display;
 
-#[derive(Debug)]
+#[derive(Debug, Display)]
+#[display(fmt = "Operation timed out")]
 pub struct TimeoutError;
 
-impl Display for TimeoutError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "Operation timed out")
-    }
-}
-
 impl std::error::Error for TimeoutError {}