unsafe 😱

src/run.rs

@@ -79,17 +79,24 @@ impl Run{
 		}
 	}
 	pub fn finish(&mut self,time:Time)->Result<(),Error>{
-		match &self.state{
+		//code based on std::mem::replace
+		let dest=&mut self.state;
+		//let's ignore ownership rules for a moment
+		unsafe{
+			let state=std::ptr::read(dest);
+			match state{
 				RunState::Created=>Err(Error::NotStarted),
 				RunState::Started{timer}=>{
-				self.state=RunState::Finished{
+					let src=RunState::Finished{
-					timer:TimerFixed::<Realtime,Paused>::new(time,timer.time(time)),
+						timer:timer.pause(time),
 					};
+					std::ptr::write(dest,src);
 					Ok(())
 				},
 				RunState::Finished{..}=>Err(Error::AlreadyFinished),
 			}
 		}
+	}
 	pub fn flag(&mut self,flag_reason:FlagReason){
 		//don't replace the first reason the run was flagged
 		if self.flagged.is_none(){