...

1) test closes old log file after path has been changed (LoggerFileBackendTest)
     test/logger_file_backend_test.exs:142
     ** (ExUnit.TimeoutError) test timed out after 60000ms. You can change the timeout:

       1. per test by setting "@tag timeout: x"
       2. per case by setting "@moduletag timeout: x"
       3. globally via "ExUnit.start(timeout: x)" configuration
       4. or set it to infinity per run by calling "mix test --trace"
          (useful when using IEx.pry/0)

     Timeouts are given as integers in milliseconds.

     code: refute has_open(org_path)
     stacktrace:
       (elixir) lib/system.ex:652: System.do_cmd/3
       (elixir) lib/system.ex:641: System.cmd/3
       test/logger_file_backend_test.exs:215: LoggerFileBackendTest.has_open/2
       test/logger_file_backend_test.exs:151: (test)
       (ex_unit) lib/ex_unit/runner.ex:355: ExUnit.Runner.exec_test/1
       (stdlib) timer.erl:166: :timer.tc/1
       (ex_unit) lib/ex_unit/runner.ex:306: anonymous fn/4 in ExUnit.Runner.spawn_test_monitor/4

........

  2) test prunes invalid utf-8 codepoints (LoggerFileBackendTest)
     test/logger_file_backend_test.exs:74
     Assertion with =~ failed
     code:  assert log() =~ "hiÔøΩ"
     left:  "pid=<0.215.0> line=75 function=test prunes invalid utf-8 codepoints/1 module=LoggerFileBackendTest file=.../logger_file_backend/test/logger_file_backend_test.exs "
     right: "hiÔøΩ"
     stacktrace:
       test/logger_file_backend_test.exs:76: (test)

...q

  3) test closes old log file after log file has been moved (LoggerFileBackendTest)
     test/logger_file_backend_test.exs:127
     ** (ExUnit.TimeoutError) test timed out after 60000ms. You can change the timeout:

       1. per test by setting "@tag timeout: x"
       2. per case by setting "@moduletag timeout: x"
       3. globally via "ExUnit.start(timeout: x)" configuration
       4. or set it to infinity per run by calling "mix test --trace"
          (useful when using IEx.pry/0)

     Timeouts are given as integers in milliseconds.

     code: assert has_open(path())
     stacktrace:
       (elixir) lib/system.ex:652: System.do_cmd/3
       (elixir) lib/system.ex:641: System.cmd/3
       test/logger_file_backend_test.exs:215: LoggerFileBackendTest.has_open/2
       test/logger_file_backend_test.exs:138: (test)
       (ex_unit) lib/ex_unit/runner.ex:355: ExUnit.Runner.exec_test/1
       (stdlib) timer.erl:166: :timer.tc/1
       (ex_unit) lib/ex_unit/runner.ex:306: anonymous fn/4 in ExUnit.Runner.spawn_test_monitor/4



Finished in 120.2 seconds
17 tests, 3 failures