chore: inline variables to format strings

Found by new clippy.

Signed-off-by: Lars Wirzenius <liw@liw.fi>

src/bin/cibtool.rs

@@ -43,10 +43,10 @@ mod cibtoolcmd;
 fn main() {
     logger::open(logger::LogLevel::Info);
     if let Err(e) = fallible_main() {
-        eprintln!("ERROR: {}", e);
+        eprintln!("ERROR: {e}");
         let mut e = e.source();
         while let Some(source) = e {
-            eprintln!("caused by: {}", source);
+            eprintln!("caused by: {source}");
             e = source.source();
         }
         exit(1);

src/bin/cibtoolcmd/event.rs

@@ -39,11 +39,11 @@ impl Leaf for ListEvents {
             let events = events?;
             let json =
                 serde_json::to_string_pretty(&events).map_err(CibToolError::EventListToJson)?;
-            println!("{}", json);
+            println!("{json}");
         } else if self.verbose {
             for id in event_ids {
                 if let Some(e) = db.get_queued_ci_event(&id)? {
-                    println!("{id}: {:?}", e);
+                    println!("{id}: {e:?}");
                 } else {
                     println!("{id}: No such event");
                 }

src/bin/cibtoolcmd/message.rs

@@ -41,7 +41,7 @@ impl Leaf for MessageCmd {
             MessageKind::Failure => response_json(failure()?)?,
         };
 
-        println!("{}", msg);
+        println!("{msg}");
 
         Ok(())
     }

src/bin/cibtoolcmd/timeout.rs

@@ -98,7 +98,7 @@ impl Leaf for TimeoutCmd {
 
         println!("stdout bytes: {stdout_bytes}");
         println!("duration: {} ms", elapsed.as_millis());
-        println!("speed: {:.0} B/s", speed);
+        println!("speed: {speed:.0} B/s");
         println!("exit: {}", tor.exit_code());
 
         Ok(())

src/msg.rs

@@ -722,7 +722,7 @@ impl std::fmt::Display for Author {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{}", self.id)?;
         if let Some(alias) = &self.alias {
-            write!(f, " ({})", alias)?;
+            write!(f, " ({alias})")?;
         }
         Ok(())
     }

src/pages.rs

@@ -337,7 +337,7 @@ impl PageData {
     fn per_repo_page_as_html(&self, rid: RepoId, alias: &str, timestamp: &str) -> HtmlPage {
         let mut doc = HtmlPage::default();
 
-        let title = format!("CI runs for repository {}", alias);
+        let title = format!("CI runs for repository {alias}");
         Self::head(&mut doc, &title);
 
         doc.push_to_body(

src/run.rs

@@ -177,7 +177,7 @@ impl fmt::Display for RunState {
             Self::Running => "running",
             Self::Triggered => "triggered",
         };
-        write!(f, "{}", s)
+        write!(f, "{s}")
     }
 }
 

src/sensitive.rs

@@ -34,14 +34,14 @@ pub struct Sensitive {
 impl fmt::Display for Sensitive {
     /// Serialize for normal output.
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        write!(f, "{}", PLACEHOLDER)
+        write!(f, "{PLACEHOLDER}")
     }
 }
 
 impl fmt::Debug for Sensitive {
     /// Serialize for debug output.
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
-        write!(f, "{}", PLACEHOLDER)
+        write!(f, "{PLACEHOLDER}")
     }
 }