chore: use variables in Rust format strings

Change this:

    format!("{}", foo)

into this:

    format!("{foo}")

Support for this feature was added in Rust 1.58 (see
https://github.com/rust-lang/rust/releases/tag/1.58.0) and in 1.67
clippy suggests about this. Because the new style seems to be where
the Rust ecosystem is going, I think Subplot should follow to avoid
being needlessly different from most other projects.

Sponsored-by: author

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/bindings-ubm.rs b/tests/bindings-ubm.rs
index dc3be19..0ee59e5 100644
--- a/tests/bindings-ubm.rs
+++ b/tests/bindings-ubm.rs
@@ -16,7 +16,7 @@ fn bindings_microbenchmark() {
 
     let mut texts = vec![];
     for i in 0..N {
-        texts.push(format!("step {}", i));
+        texts.push(format!("step {i}"));
     }
     let texted = time.elapsed().unwrap();
 
@@ -24,7 +24,7 @@ fn bindings_microbenchmark() {
     for t in texts.iter() {
         re.push((
             t,
-            RegexBuilder::new(&format!("^{}$", t))
+            RegexBuilder::new(&format!("^{t}$"))
                 .case_insensitive(false)
                 .build()
                 .unwrap(),