Before:
  runtime ale_linters/bzl/buildifier.vim

After:
  call ale#linter#Reset()

Execute(The buildifier handler should parse lines correctly):
  AssertEqual
  \ [
  \   {
  \     'lnum': 26,
  \     'col': 1,
  \     'type': 'E',
  \     'text': 'syntax error near'';'' and move the next statement to the new line',
  \   },
  \   {
  \     'lnum': 7,
  \     'col': 0,
  \     'type': 'W',
  \     'text': 'unused-variable: Variable "foo" is unused. Please remove it. (https://github.com/bazelbuild/buildtools/blob/master/WARNINGS.md#unused-variable)'
  \   },
  \ ],
  \ ale_linters#bzl#buildifier#Handle(bufnr(''), [
  \   'swiftformat/toolchains/assets.bzl:26:1: syntax error near'';'' and move the next statement to the new line',
  \   'swiftformat/toolchains/assets.bzl:7: unused-variable: Variable "foo" is unused. Please remove it. (https://github.com/bazelbuild/buildtools/blob/master/WARNINGS.md#unused-variable)',
  \ ])