Use a custom, more compact, logger formatter

lib/uh/wm/logger_formatter.rb

@@ -0,0 +1,16 @@
+module Uh
+  module WM
+    class LoggerFormatter
+      FORMAT_STR = "%s.%03i %s: %s\n".freeze
+
+      def call severity, datetime, progname, message
+        FORMAT_STR % [
+          datetime.strftime('%FT%T'),
+          datetime.usec / 1000,
+          severity[0..0],
+          message
+        ]
+      end
+    end
+  end
+end