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Inline variables in `format!`

Co-authored-by: Weihang Lo <weihanglo@users.noreply.github.com>

Author: mo8it

crates/rustfix/tests/parse_and_replace.rs

@@ -234,7 +234,7 @@ fn get_fixture_files(p: &str) -> Result<Vec<PathBuf>, Error> {
 
 fn assert_fixtures(dir: &str, mode: &str) {
     let files = get_fixture_files(dir)
-        .with_context(|| format!("couldn't load dir `{}`", dir))
+        .with_context(|| format!("couldn't load dir `{dir}`"))
         .unwrap();
     let mut failures = 0;
 

src/cargo/ops/cargo_add/mod.rs

@@ -1087,7 +1087,7 @@ fn find_workspace_dep(toml_key: &str, root_manifest: &Path) -> CargoResult<Depen
         .context("could not make `dependencies` into a table")?;
     let dep_item = dependencies
         .get(toml_key)
-        .with_context(|| format!("could not find {} in `workspace.dependencies`", toml_key))?;
+        .with_context(|| format!("could not find {toml_key} in `workspace.dependencies`"))?;
     Dependency::from_toml(root_manifest.parent().unwrap(), toml_key, dep_item)
 }