Use format arguments capture feature

see rust-lang/rust#90473

Author: Turbo87

cargo-registry-markdown/lib.rs

@@ -390,62 +390,55 @@ mod tests {
                 assert_eq!(
                     result,
                     format!(
-                        "<p><a href=\"https://{}/rust-lang/test/blob/HEAD/hi\" rel=\"nofollow noopener noreferrer\">hi</a></p>\n",
-                        host
+                        "<p><a href=\"https://{host}/rust-lang/test/blob/HEAD/hi\" rel=\"nofollow noopener noreferrer\">hi</a></p>\n"
                     )
                 );
 
                 let result = markdown_to_html(relative, Some(&url), "");
                 assert_eq!(
                     result,
                     format!(
-                        "<p><a href=\"https://{}/rust-lang/test/blob/HEAD/there\" rel=\"nofollow noopener noreferrer\">there</a></p>\n",
-                        host
+                        "<p><a href=\"https://{host}/rust-lang/test/blob/HEAD/there\" rel=\"nofollow noopener noreferrer\">there</a></p>\n"
                     )
                 );
 
                 let result = markdown_to_html(image, Some(&url), "");
                 assert_eq!(
                     result,
                     format!(
-                        "<p><img src=\"https://{}/rust-lang/test/raw/HEAD/img.png\" alt=\"alt\"></p>\n",
-                        host
+                        "<p><img src=\"https://{host}/rust-lang/test/raw/HEAD/img.png\" alt=\"alt\"></p>\n",
                     )
                 );
 
                 let result = markdown_to_html(html_image, Some(&url), "");
                 assert_eq!(
                     result,
                     format!(
-                        "<img src=\"https://{}/rust-lang/test/raw/HEAD/img.png\" alt=\"alt\">\n",
-                        host
+                        "<img src=\"https://{host}/rust-lang/test/raw/HEAD/img.png\" alt=\"alt\">\n",
                     )
                 );
 
                 let result = markdown_to_html(svg, Some(&url), "");
                 assert_eq!(
                     result,
                     format!(
-                        "<p><img src=\"https://{}/rust-lang/test/raw/HEAD/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
-                        host
+                        "<p><img src=\"https://{host}/rust-lang/test/raw/HEAD/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
                     )
                 );
 
                 let result = markdown_to_html(svg, Some(&url), "subdir");
                 assert_eq!(
                     result,
                     format!(
-                        "<p><img src=\"https://{}/rust-lang/test/raw/HEAD/subdir/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
-                        host
+                        "<p><img src=\"https://{host}/rust-lang/test/raw/HEAD/subdir/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
                     )
                 );
 
                 let result = markdown_to_html(svg, Some(&url), "subdir1/subdir2");
                 assert_eq!(
                     result,
                     format!(
-                        "<p><img src=\"https://{}/rust-lang/test/raw/HEAD/subdir1/subdir2/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
-                        host
+                        "<p><img src=\"https://{host}/rust-lang/test/raw/HEAD/subdir1/subdir2/sanitize.svg?sanitize=true\" alt=\"alt\"></p>\n",
                     )
                 );
             }

cargo-registry-s3/lib.rs

@@ -85,7 +85,7 @@ impl Bucket {
             "{}.s3{}.amazonaws.com",
             self.name,
             match self.region {
-                Some(ref r) if !r.is_empty() => format!("-{}", r),
+                Some(ref r) if !r.is_empty() => format!("-{r}"),
                 Some(_) => String::new(),
                 None => String::new(),
             }
@@ -95,13 +95,9 @@ impl Bucket {
     fn auth(&self, verb: &str, date: &str, path: &str, md5: &str, content_type: &str) -> String {
         let string = format!(
             "{verb}\n{md5}\n{ty}\n{date}\n{headers}/{name}/{path}",
-            verb = verb,
-            md5 = md5,
             ty = content_type,
-            date = date,
             headers = "",
             name = self.name,
-            path = path
         );
         let signature = {
             let key = self.secret_key.as_bytes();

src/admin/delete_crate.rs

@@ -37,7 +37,7 @@ fn delete(opts: Opts, conn: &PgConnection) {
     let n = diesel::delete(crates::table.find(krate.id))
         .execute(conn)
         .unwrap();
-    println!("  {} deleted", n);
+    println!("  {n} deleted");
 
     if !dialoguer::confirm("commit?") {
         panic!("aborting transaction");

src/admin/on_call.rs

@@ -31,7 +31,7 @@ impl Event {
         let response = Client::new()
             .post("https://events.pagerduty.com/generic/2010-04-15/create_event.json")
             .header(header::ACCEPT, "application/vnd.pagerduty+json;version=2")
-            .header(header::AUTHORIZATION, format!("Token token={}", api_token))
+            .header(header::AUTHORIZATION, format!("Token token={api_token}"))
             .json(&FullEvent {
                 service_key,
                 event: self,

src/admin/render_readmes.rs

@@ -52,8 +52,8 @@ pub fn run(opts: Opts) -> anyhow::Result<()> {
     };
     let older_than = older_than.naive_utc();
 
-    println!("Start time:                   {}", start_time);
-    println!("Rendering readmes older than: {}", older_than);
+    println!("Start time:                   {start_time}");
+    println!("Rendering readmes older than: {older_than}");
 
     let mut query = versions::table
         .inner_join(crates::table)
@@ -67,14 +67,14 @@ pub fn run(opts: Opts) -> anyhow::Result<()> {
         .into_boxed();
 
     if let Some(crate_name) = opts.crate_name {
-        println!("Rendering readmes for {}", crate_name);
+        println!("Rendering readmes for {crate_name}");
         query = query.filter(crates::name.eq(crate_name));
     }
 
     let version_ids: Vec<i32> = query.load(&conn).expect("error loading version ids");
 
     let total_versions = version_ids.len();
-    println!("Rendering {} versions", total_versions);
+    println!("Rendering {total_versions} versions");
 
     let page_size = opts.page_size;
 
@@ -138,8 +138,8 @@ pub fn run(opts: Opts) -> anyhow::Result<()> {
         }
         for handle in tasks {
             match handle.join() {
-                Err(err) => println!("Thread panicked: {:?}", err),
-                Ok(Err(err)) => println!("Thread failed: {:?}", err),
+                Err(err) => println!("Thread panicked: {err:?}"),
+                Ok(Err(err)) => println!("Thread failed: {err:?}"),
                 _ => {}
             }
         }
@@ -161,7 +161,7 @@ fn get_readme(
 
     let location = match uploader {
         Uploader::S3 { .. } => location,
-        Uploader::Local => format!("http://localhost:8888/{}", location),
+        Uploader::Local => format!("http://localhost:8888/{location}"),
     };
 
     let mut extra_headers = header::HeaderMap::new();
@@ -188,7 +188,7 @@ fn render_pkg_readme<R: Read>(mut archive: Archive<R>, pkg_name: &str) -> anyhow
     let mut entries = archive.entries().context("Invalid tar archive entries")?;
 
     let manifest: Manifest = {
-        let path = format!("{}/Cargo.toml", pkg_name);
+        let path = format!("{pkg_name}/Cargo.toml");
         let contents = find_file_by_path(&mut entries, Path::new(&path))
             .context("Failed to read Cargo.toml file")?;
 
@@ -201,9 +201,9 @@ fn render_pkg_readme<R: Read>(mut archive: Archive<R>, pkg_name: &str) -> anyhow
             .readme
             .clone()
             .unwrap_or_else(|| "README.md".into());
-        let path = format!("{}/{}", pkg_name, readme_path);
+        let path = format!("{pkg_name}/{readme_path}");
         let contents = find_file_by_path(&mut entries, Path::new(&path))
-            .with_context(|| format!("Failed to read {} file", readme_path))?;
+            .with_context(|| format!("Failed to read {readme_path} file"))?;
 
         // pkg_path_in_vcs Unsupported from admin::render_readmes. See #4095
         // Would need access to cargo_vcs_info

src/bin/enqueue-job.rs

@@ -11,7 +11,7 @@ fn main() -> Result<()> {
     let mut args = std::env::args().skip(1);
 
     let job = args.next().unwrap_or_default();
-    println!("Enqueueing background job: {}", job);
+    println!("Enqueueing background job: {job}");
 
     match &*job {
         "update_downloads" => {

src/bin/monitor.rs

@@ -54,8 +54,7 @@ fn check_failing_background_jobs(conn: &PgConnection) -> Result<()> {
         on_call::Event::Trigger {
             incident_key: Some(EVENT_KEY.into()),
             description: format!(
-                "{} jobs have been in the queue for more than {} minutes",
-                stalled_job_count, max_job_time
+                "{stalled_job_count} jobs have been in the queue for more than {max_job_time} minutes"
             ),
         }
     } else {
@@ -95,7 +94,7 @@ fn check_stalled_update_downloads(conn: &PgConnection) -> Result<()> {
         if minutes > max_job_time {
             return log_and_trigger_event(on_call::Event::Trigger {
                 incident_key: Some(EVENT_KEY.into()),
-                description: format!("update_downloads job running for {} minutes", minutes),
+                description: format!("update_downloads job running for {minutes} minutes"),
             });
         }
     };
@@ -130,13 +129,13 @@ fn check_spam_attack(conn: &PgConnection) -> Result<()> {
         .optional()?;
 
     if let Some(bad_crate) = bad_crate {
-        event_description = Some(format!("Crate named {} published", bad_crate));
+        event_description = Some(format!("Crate named {bad_crate} published"));
     }
 
     let event = if let Some(event_description) = event_description {
         on_call::Event::Trigger {
             incident_key: Some(EVENT_KEY.into()),
-            description: format!("{}, possible spam attack underway", event_description,),
+            description: format!("{event_description}, possible spam attack underway"),
         }
     } else {
         on_call::Event::Resolve {
@@ -153,11 +152,11 @@ fn log_and_trigger_event(event: on_call::Event) -> Result<()> {
     match event {
         on_call::Event::Trigger {
             ref description, ..
-        } => println!("Paging on-call: {}", description),
+        } => println!("Paging on-call: {description}"),
         on_call::Event::Resolve {
             description: Some(ref description),
             ..
-        } => println!("{}", description),
+        } => println!("{description}"),
         _ => {} // noop
     }
     event.send()

src/bin/server.rs

@@ -110,7 +110,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Do not change this line! Removing the line or changing its contents in any way will break
     // the test suite :)
-    println!("Listening at http://{}", addr);
+    println!("Listening at http://{addr}");
 
     // Creating this file tells heroku to tell nginx that the application is ready
     // to receive traffic.
@@ -120,7 +120,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         } else {
             "/tmp/app-initialized"
         };
-        println!("Writing to {}", path);
+        println!("Writing to {path}");
         File::create(path).unwrap();
 
         // Launch nginx via the Heroku nginx buildpack
@@ -137,7 +137,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("Persisting remaining downloads counters");
     match app.downloads_counter.persist_all_shards(&app) {
         Ok(stats) => stats.log(),
-        Err(err) => println!("downloads_counter error: {}", err),
+        Err(err) => println!("downloads_counter error: {err}"),
     }
 
     println!("Server has gracefully shutdown!");
@@ -154,7 +154,7 @@ fn downloads_counter_thread(app: Arc<App>) {
 
         match app.downloads_counter.persist_next_shard(&app) {
             Ok(stats) => stats.log(),
-            Err(err) => println!("downloads_counter error: {}", err),
+            Err(err) => println!("downloads_counter error: {err}"),
         }
     });
 }
@@ -169,7 +169,7 @@ fn log_instance_metrics_thread(app: Arc<App>) {
 
     std::thread::spawn(move || loop {
         if let Err(err) = log_instance_metrics_inner(&app) {
-            eprintln!("log_instance_metrics error: {}", err);
+            eprintln!("log_instance_metrics error: {err}");
         }
         std::thread::sleep(interval);
     });

src/boot/categories.rs

@@ -38,7 +38,7 @@ impl Category {
 fn required_string_from_toml<'a>(toml: &'a toml::value::Table, key: &str) -> Result<&'a str> {
     toml.get(key)
         .and_then(toml::Value::as_str)
-        .with_context(|| format!("Expected category TOML attribute '{}' to be a String", key))
+        .with_context(|| format!("Expected category TOML attribute '{key}' to be a String"))
 }
 
 fn optional_string_from_toml<'a>(toml: &'a toml::value::Table, key: &str) -> &'a str {
@@ -54,7 +54,7 @@ fn categories_from_toml(
     for (slug, details) in categories {
         let details = details
             .as_table()
-            .with_context(|| format!("category {} was not a TOML table", slug))?;
+            .with_context(|| format!("category {slug} was not a TOML table"))?;
 
         let category = Category::from_parent(
             slug,
@@ -66,7 +66,7 @@ fn categories_from_toml(
         if let Some(categories) = details.get("categories") {
             let categories = categories
                 .as_table()
-                .with_context(|| format!("child categories of {} were not a table", slug))?;
+                .with_context(|| format!("child categories of {slug} were not a table"))?;
 
             result.extend(categories_from_toml(categories, Some(&category))?);
         }

src/controllers.rs

@@ -72,7 +72,7 @@ mod prelude {
             let query_string = url::form_urlencoded::Serializer::new(String::new())
                 .extend_pairs(params)
                 .finish();
-            format!("?{}", query_string)
+            format!("?{query_string}")
         }
 
         fn log_metadata<V: std::fmt::Display>(&mut self, key: &'static str, value: V) {