nit: fmt + clippy

Cargo.toml

@@ -5,15 +5,7 @@ edition = "2021"
 repository = "https://github.com/arena-rs/arena"
 description = "Framework for holistic economic modelling and simulation of Uniswap v4 strategies, hooks and pools."
 license-file = "./LICENSE"
-exclude = ["contracts", "cli"]
-
-[lib]
-name = "libarena"
-path = "src/lib.rs"
-
-[[bin]]
-name = "arena"
-path = "src/bin/cli.rs"
+exclude = ["contracts"]
 
 [dependencies]
 rug = "1.25.0"

src/engine/inspector.rs

@@ -1,5 +1,5 @@
-use std::fs::OpenOptions;
-use std::io::Seek;
+use std::{fs::OpenOptions, io::Seek};
+
 use serde::{Deserialize, Serialize};
 
 /// Trait allowing custom behavior to be defined for logging and inspecting values.
@@ -75,10 +75,9 @@ impl Logger {
     fn append_to_file(&self, record: &LogMessage) -> Result<(), Box<dyn std::error::Error>> {
         let mut file = OpenOptions::new()
             .append(true)
-            .write(true)
             .create(true)
             .open(&self.file_path)?;
-    
+
         match self.format {
             LogFormat::Csv => {
                 let mut writer = csv::Writer::from_writer(file);
@@ -98,7 +97,7 @@ impl Logger {
             }
         }
         Ok(())
-    }    
+    }
 }
 
 impl Inspector<LogMessage> for Logger {

src/lib.rs

@@ -211,7 +211,10 @@ mod tests {
             _signal: Signal,
             inspector: &mut Box<dyn Inspector<LogMessage>>,
         ) {
-            inspector.log(LogMessage::new(String::from("test_key"), String::from("test_value")));
+            inspector.log(LogMessage::new(
+                String::from("test_key"),
+                String::from("test_value"),
+            ));
         }
     }