diff --git a/polyglot/piranha/src/main.rs b/polyglot/piranha/src/main.rs
index b3ed2f9032..a42d1c4616 100644
--- a/polyglot/piranha/src/main.rs
+++ b/polyglot/piranha/src/main.rs
@@ -17,12 +17,12 @@ use std::{fs, time::Instant};
 use log::info;
 use polyglot_piranha::{
   execute_piranha, models::piranha_arguments::PiranhaArguments,
-  models::piranha_output::PiranhaOutputSummary, utilities::initialize_logger,
+  models::piranha_output::PiranhaOutputSummary,
 };
 
 fn main() {
   let now = Instant::now();
-  initialize_logger(false);
+  env_logger::init();
 
   let args = PiranhaArguments::from_command_line();
 
diff --git a/polyglot/piranha/src/tests/mod.rs b/polyglot/piranha/src/tests/mod.rs
index a1344ad6a6..a7f822d424 100644
--- a/polyglot/piranha/src/tests/mod.rs
+++ b/polyglot/piranha/src/tests/mod.rs
@@ -19,7 +19,7 @@ use crate::config::CommandLineArguments;
 use crate::execute_piranha;
 use crate::models::piranha_arguments::PiranhaArguments;
 use crate::models::piranha_output::PiranhaOutputSummary;
-use crate::utilities::{eq_without_whitespace, find_file, initialize_logger, read_file};
+use crate::utilities::{eq_without_whitespace, find_file, read_file};
 
 mod test_piranha_java;
 mod test_piranha_kt;
@@ -34,7 +34,7 @@ static INIT: Once = Once::new();
 
 fn initialize() {
   INIT.call_once(|| {
-    initialize_logger(true);
+    env_logger::init();
   });
 }
 
diff --git a/polyglot/piranha/src/utilities/mod.rs b/polyglot/piranha/src/utilities/mod.rs
index f32afe1116..a2ebf2fbc6 100644
--- a/polyglot/piranha/src/utilities/mod.rs
+++ b/polyglot/piranha/src/utilities/mod.rs
@@ -12,15 +12,13 @@ Copyright (c) 2022 Uber Technologies, Inc.
 */
 
 pub(crate) mod tree_sitter_utilities;
-
 use std::collections::HashMap;
 #[cfg(test)]
 use std::fs::{self, DirEntry};
-use std::fs::{File, OpenOptions};
+use std::fs::File;
 use std::hash::Hash;
 use std::io::{BufReader, Read};
 use std::path::PathBuf;
-use env_logger::{Env, Builder};
 
 // Reads a file.
 pub(crate) fn read_file(file_path: &PathBuf) -> Result<String, String> {
@@ -66,15 +64,6 @@ impl<T: Hash + Eq, U> MapOfVec<T, U> for HashMap<T, Vec<U>> {
   }
 }
 
-/// Initialize logger.
-pub fn initialize_logger(is_test: bool) {
-   Builder::default()
-    .format_timestamp(None)
-    .is_test(is_test)
-    .default_format()
-    .init();
-}
-
 /// Compares two strings, ignoring whitespace
 pub(crate) fn eq_without_whitespace(s1: &str, s2: &str) -> bool {
   s1.split_whitespace()