Prefer Minitest's location for test failures.

When running tests, the Rails test runner would report the start of the test method as the test failure.

For this test:

```ruby
1 require 'test_helper
2
3 class BunnyTest < ActiveSupport::TestCase
4   test "something failing" do
5     assert false, 'This failed'
6   end
7 end
```

The runner outputs 5 instead of 4:

```
............................................F

This failed

bin/rails test test/models/bunny_test.rb:5

........
```

1 files changed, 1 insertions, 1 deletions

diff --git a/railties/test/application/test_runner_test.rb b/railties/test/application/test_runner_test.rb
index 0aa6ce2252..4965ab7da0 100644
--- a/railties/test/application/test_runner_test.rb
+++ b/railties/test/application/test_runner_test.rb
@@ -344,7 +344,7 @@ module ApplicationTests
       create_test_file :models, 'post', pass: false
 
       output = run_test_command('test/models/post_test.rb')
-      assert_match %r{Running:\n\nPostTest\nF\n\nwups!\n\nbin/rails test test/models/post_test.rb:4}, output
+      assert_match %r{Running:\n\nPostTest\nF\n\nwups!\n\nbin/rails test test/models/post_test.rb:6}, output
     end
 
     def test_only_inline_failure_output