General code cleanup

src/command/apply.rs

@@ -14,7 +14,7 @@ use crate::progress::SimpleProgressOutput;
 use crate::nix::{NixError, NodeFilter};
 use crate::util;
 
-pub fn register_deploy_args<'a>(command: App<'a>) -> App<'a> {
+pub fn register_deploy_args(command: App) -> App {
     command
         .arg(Arg::new("eval-node-limit")
             .long("eval-node-limit")

src/job.rs

@@ -382,10 +382,7 @@ impl JobMonitor {
             metadata.custom_message = message;
         }
 
-        let metadata = if new_state == JobState::Waiting {
-            // Waiting state doesn't generate user-visible output
-            metadata
-        } else {
+        if new_state != JobState::Waiting {
             if let Some(sender) = &self.progress {
                 let text = if new_state == JobState::Succeeded {
                     metadata.custom_message.clone()
@@ -406,8 +403,6 @@ impl JobMonitor {
                     sender.send(message).unwrap();
                 }
             }
-
-            metadata
         };
 
         self.jobs.insert(job_id, metadata);

src/nix/profile.rs

@@ -100,7 +100,7 @@ impl TryFrom<BuildResult<Profile>> for Profile {
             });
         }
 
-        let path = paths.into_iter().next()
+        let path = paths.iter().next()
             .unwrap().to_owned();
 
         Ok(Self::from_store_path_unchecked(path))

src/util.rs

@@ -157,7 +157,7 @@ pub async fn hive_from_args(args: &ArgMatches) -> NixResult<Hive> {
     Ok(hive)
 }
 
-pub fn register_selector_args<'a>(command: App<'a>) -> App<'a> {
+pub fn register_selector_args(command: App) -> App {
     command
         .arg(Arg::new("on")
             .long("on")