Update

lib/ex_cmd/process.ex

@@ -195,8 +195,8 @@ defmodule ExCmd.Process do
   ```
   # sleep command does not watch for stdin or stdout, so closing the
   # pipe does not terminate the sleep command.
-  iex> {:ok, p} = Process.start_link(~w(sleep 100000000)) # sleep indefinitely
-  iex> Process.await_exit(p, 500) # ensure `await_exit` finish within `500ms`. By default it waits for 5s
+  iex> {:ok, p} = Process.start_link(~w(sleep 100000000), log: :stderr) # sleep indefinitely
+  iex> Process.await_exit(p, 1000) # ensure `await_exit` finish within `1000ms`. By default it waits for 5s
   {:error, :killed} # command exit due to SIGTERM
   ```
 

test/ex_cmd/process_test.exs

@@ -253,14 +253,14 @@ defmodule ExCmd.ProcessTest do
 
     @tag skip: Application.compile_env!(:ex_cmd, :current_os) == :windows
     test "await_exit with timeout" do
-      {:ok, s} = Process.start_link([fixture("ignore_sigterm.sh")])
+      {:ok, s} = Process.start_link([fixture("ignore_sigterm.sh")], log: :stderr)
       {:ok, os_pid} = Process.os_pid(s)
       assert os_process_alive?(os_pid)
 
       assert {:ok, "ignored signals\n" <> _} = Process.read(s)
 
-      # attempt to kill the process after 200ms
-      assert_killed(Process.await_exit(s, 200))
+      # attempt to kill the process after 1000ms
+      assert_killed(Process.await_exit(s, 1000))
 
       refute os_process_alive?(os_pid)
       refute Elixir.Process.alive?(s.pid)