refactor: remove redundant references (&)

cargo-pgrx/src/command/cross/pgrx_target.rs

@@ -112,7 +112,7 @@ fn make_target_info(cmd: &PgrxTarget, tmp: &Path) -> Result<()> {
         .arg("--features")
         .arg(format!("pgrx-pg-sys/pg{major_version}"))
         .env("PGRX_PG_CONFIG_PATH", &pg_config_path)
-        .env("PGRX_PG_SYS_EXTRA_OUTPUT_PATH", &tmp.join(&filename)))?;
+        .env("PGRX_PG_SYS_EXTRA_OUTPUT_PATH", tmp.join(&filename)))?;
 
     run(Command::new("rustfmt").current_dir(tmp).arg(&filename))?;
     run(Command::new("tar").current_dir(tmp).arg("czf").arg("out.tgz").arg(&filename))?;

cargo-pgrx/src/command/init.rs

@@ -273,7 +273,7 @@ fn untar(bytes: &[u8], pgrxdir: &Path, pg_config: &PgConfig, init: &Init) -> eyr
     let _token = init.jobserver.get().unwrap().acquire().unwrap();
 
     let mut unpackdir = pgrxdir.to_path_buf();
-    unpackdir.push(&format!("{}_unpack", pg_config.version()?));
+    unpackdir.push(format!("{}_unpack", pg_config.version()?));
     if unpackdir.exists() {
         // delete everything at this path if it already exists
         println!("{} {}", "     Removing".bold().green(), unpackdir.display());

cargo-pgrx/src/command/install.rs

@@ -131,7 +131,7 @@ pub(crate) fn install_extension(
     let mut output_tracking = Vec::new();
     let base_directory = base_directory.unwrap_or_else(|| PathBuf::from("/"));
     tracing::Span::current()
-        .record("base_directory", &tracing::field::display(&base_directory.display()));
+        .record("base_directory", tracing::field::display(&base_directory.display()));
 
     let manifest = Manifest::from_path(&package_manifest_path)?;
     let (control_file, extname) = find_control_file(&package_manifest_path)?;

cargo-pgrx/src/command/schema.rs

@@ -343,7 +343,7 @@ fn first_build(
 
     if !features_arg.trim().is_empty() {
         command.arg("--features");
-        command.arg(&features_arg);
+        command.arg(features_arg);
     }
 
     if features.no_default_features {
@@ -387,7 +387,7 @@ fn compute_codegen(
     dot: Option<String>,
 ) -> eyre::Result<String> {
     use proc_macro2::{Ident, Span, TokenStream};
-    let lib_name_ident = Ident::new(&lib_name, Span::call_site());
+    let lib_name_ident = Ident::new(lib_name, Span::call_site());
 
     let inputs = {
         let control_file_path = control_file_path
@@ -501,7 +501,7 @@ fn second_build(
 
     if !features_arg.trim().is_empty() {
         command.arg("--features");
-        command.arg(&features_arg);
+        command.arg(features_arg);
     }
 
     if features.no_default_features {

cargo-pgrx/src/command/test.rs

@@ -127,7 +127,7 @@ pub fn test_extension(
     pgdata: Option<PathBuf>,
 ) -> eyre::Result<()> {
     if let Some(ref testname) = testname {
-        tracing::Span::current().record("testname", &tracing::field::display(&testname.as_ref()));
+        tracing::Span::current().record("testname", tracing::field::display(&testname.as_ref()));
     }
     let target_dir = get_target_dir()?;
 

pgrx-bindgen/src/build.rs

@@ -315,7 +315,7 @@ fn generate_bindings(
     };
     for dest_dir in dest_dirs {
         let mut bindings_file = dest_dir.clone();
-        bindings_file.push(&format!("pg{major_version}.rs"));
+        bindings_file.push(format!("pg{major_version}.rs"));
         write_rs_file(
             rewritten_items.clone(),
             &bindings_file,
@@ -334,7 +334,7 @@ fn generate_bindings(
         })?;
 
         let mut oids_file = dest_dir.clone();
-        oids_file.push(&format!("pg{major_version}_oids.rs"));
+        oids_file.push(format!("pg{major_version}_oids.rs"));
         write_rs_file(oids.clone(), &oids_file, quote! {}, is_for_release).wrap_err_with(|| {
             format!(
                 "Unable to write oids file for pg{} to `{}`",

pgrx-pg-config/src/lib.rs

@@ -747,7 +747,7 @@ fn does_db_exist(pg_config: &PgConfig, dbname: &str) -> eyre::Result<bool> {
         .arg(pg_config.port()?.to_string())
         .arg("template1")
         .arg("-c")
-        .arg(&format!(
+        .arg(format!(
             "select count(*) from pg_database where datname = '{}';",
             dbname.replace('\'', "''")
         ))