1 files changed, 9 insertions, 16 deletions
diff --git a/alacritty/src/logging.rs b/alacritty/src/logging.rs
index 0ed37220..3ac40e4b 100644
--- a/alacritty/src/logging.rs
+++ b/alacritty/src/logging.rs
@@ -9,12 +9,11 @@ use std::io::{self, LineWriter, Stdout, Write};
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
+use std::time::Instant;
 use std::{env, process};
 
 use glutin::event_loop::EventLoopProxy;
 use log::{self, Level, LevelFilter};
-use time::macros::format_description;
-use time::{OffsetDateTime, UtcOffset};
 
 use crate::cli::Options;
 use crate::event::{Event, EventType};
@@ -43,7 +42,7 @@ pub struct Logger {
     logfile: Mutex<OnDemandLogFile>,
     stdout: Mutex<LineWriter<Stdout>>,
     event_proxy: Mutex<EventLoopProxy<Event>>,
-    tz_offset: UtcOffset,
+    start: Instant,
 }
 
 impl Logger {
@@ -51,12 +50,7 @@ impl Logger {
         let logfile = Mutex::new(OnDemandLogFile::new());
         let stdout = Mutex::new(LineWriter::new(io::stdout()));
 
-        Logger {
-            logfile,
-            stdout,
-            event_proxy: Mutex::new(event_proxy),
-            tz_offset: UtcOffset::current_local_offset().expect("local timezone offset"),
-        }
+        Logger { logfile, stdout, event_proxy: Mutex::new(event_proxy), start: Instant::now() }
     }
 
     fn file_path(&self) -> Option<PathBuf> {
@@ -116,7 +110,7 @@ impl log::Log for Logger {
         }
 
         // Create log message for the given `record` and `target`.
-        let message = create_log_message(record, target, self.tz_offset);
+        let message = create_log_message(record, target, self.start);
 
         if let Ok(mut logfile) = self.logfile.lock() {
             // Write to logfile.
@@ -135,12 +129,11 @@ impl log::Log for Logger {
     fn flush(&self) {}
 }
 
-fn create_log_message(record: &log::Record<'_>, target: &str, tz_offset: UtcOffset) -> String {
-    let time_format = format_description!(
-        "[year]-[month]-[day] [hour repr:24]:[minute]:[second].[subsecond digits:9]"
-    );
-    let now = OffsetDateTime::now_utc().to_offset(tz_offset).format(time_format).unwrap();
-    let mut message = format!("[{}] [{:<5}] [{}] ", now, record.level(), target);
+fn create_log_message(record: &log::Record<'_>, target: &str, start: Instant) -> String {
+    let runtime = start.elapsed();
+    let secs = runtime.as_secs();
+    let nanos = runtime.subsec_nanos();
+    let mut message = format!("[{}.{:0>9}s] [{:<5}] [{}] ", secs, nanos, record.level(), target);
 
     // Alignment for the lines after the first new line character in the payload. We don't deal
     // with fullwidth/unicode chars here, so just `message.len()` is sufficient.