Translate emulator logged process crashes in 18.0+

Signed-off-by: James Fish <james@fishcakez.com>

Author: fishcakez

lib/logger/lib/logger/translator.ex

@@ -53,6 +53,11 @@ defmodule Logger.Translator do
               "** (exit) " <> Exception.format_exit(reason)
         {:ok, msg}
 
+      {'Error in process ' ++ _, [pid, {reason, stack}]} ->
+        msg = ["Process ", inspect(pid), " raised an exception" |
+               format(:error, reason, stack)]
+        {:ok, msg}
+
       _ ->
         :none
     end

lib/logger/test/logger/translator_test.exs

@@ -154,6 +154,21 @@ defmodule Logger.TranslatorTest do
     """
   end
 
+  test "translates Process crashes" do
+    if :erlang.system_info(:otp_release) >= '18' do
+      assert capture_log(:info, fn ->
+        {_, ref} = spawn_monitor(fn() -> raise "oops" end)
+        receive do: ({:DOWN, ^ref, _, _, _} -> :ok)
+        # Even though the monitor has been received the emulator may not have
+        # sent the message to the error logger
+        :timer.sleep(200)
+      end) =~ ~r"""
+      \[error\] Process #PID<\d+\.\d+\.\d+>\ raised an exception
+      \*\* \(RuntimeError\) oops
+      """
+    end
+  end
+
   test "translates :proc_lib crashes with name" do
     {:ok, pid} = Task.start_link(__MODULE__, :task,
                                  [self(), fn() ->