Improvements and fixes

log.py

@@ -3,19 +3,23 @@ import time
 
 _start = time.monotonic()
 
+
 def _ts() -> str:
-    elapsed = time.monotonic() - _start
-    return f"{elapsed:8.3f}"
+    return f"{time.monotonic() - _start:8.3f}"
+
 
 def info(msg: str):
     print(f"[{_ts()}] {msg}", file=sys.stderr, flush=True)
 
+
 def warn(msg: str):
     print(f"[{_ts()}] WARN {msg}", file=sys.stderr, flush=True)
 
+
 def error(msg: str):
     print(f"[{_ts()}] ERROR {msg}", file=sys.stderr, flush=True)
 
+
 def fatal(msg: str):
     error(msg)
     sys.exit(1)