Malformed hash causes Haml-Lint to break about haml-lint HOT 2 CLOSED

Run options: include {:locations=>{"./spec/haml_lint/linter/class_attribute_with_static_value_spec.rb"=>[48]}}

HamlLint::Linter::ClassAttributeWithStaticValue
  given an incorrectly structured hash
    example at ./spec/haml_lint/linter/class_attribute_with_static_value_spec.rb:53 (FAILED - 1)

Failures:

  1) HamlLint::Linter::ClassAttributeWithStaticValue given an incorrectly structured hash 
     Failure/Error: Unable to find matching line from backtrace
     Parser::SyntaxError:
       unexpected token tCOLON
     # /Users/<username>/.gem/ruby/2.1.2/gems/parser-2.2.0.pre.4/lib/parser/diagnostic/engine.rb:71:in `process'
     # /Users/<username>/.gem/ruby/2.1.2/gems/parser-2.2.0.pre.4/lib/parser/base.rb:264:in `on_error'
     # /Users/<username>/.gem/ruby/2.1.2/gems/parser-2.2.0.pre.4/lib/parser/base.rb:175:in `parse'
     # ./lib/haml_lint/ruby_parser.rb:26:in `parse'
     # ./lib/haml_lint/linter.rb:38:in `parse_ruby'
     # ./lib/haml_lint/linter/class_attribute_with_static_value.rb:30:in `block in contains_class_attribute?'
     # ./lib/haml_lint/linter/class_attribute_with_static_value.rb:28:in `each'
     # ./lib/haml_lint/linter/class_attribute_with_static_value.rb:28:in `contains_class_attribute?'
     # ./lib/haml_lint/linter/class_attribute_with_static_value.rb:19:in `visit_tag'
     # ./lib/haml_lint/haml_visitor.rb:18:in `visit'
     # ./lib/haml_lint/haml_visitor.rb:27:in `block in visit_children'
     # ./lib/haml_lint/haml_visitor.rb:27:in `each'
     # ./lib/haml_lint/haml_visitor.rb:27:in `visit_children'
     # ./lib/haml_lint/haml_visitor.rb:23:in `visit'
     # ./lib/haml_lint/linter.rb:17:in `run'
     # ./spec/support/shared_linter_context.rb:13:in `block (2 levels) in <top (required)>'

Finished in 0.00363 seconds (files took 0.64981 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/haml_lint/linter/class_attribute_with_static_value_spec.rb:53 # HamlLint::Linter::ClassAttributeWithStaticValue given an incorrectly structured hash