Environment data

• VS Code version: 1.22.2
• Extension version (available under the Extensions sidebar): 2018.3.1
• OS and version: macOS - High Sierra 10.13.4
• Python version: Python 3.6.5
• Type of virtual environment used: N/A
• Relevant Python package - mypy 0.580

Actual behavior

Linting errors from output not displayed visually (no red, squiggly underlining or recognized issues in Problems tab).

Expected behavior

Expect visual indication (in underlining and Problems tab) of mypy linting errors.

Steps to reproduce:

1. Create a new file, add 'hi' + 1 (or anything that should trigger a linting error)
2. Save then see no visible indication that you've written incorrect code (though the Python output shows errors)

Logs

Seems to maybe be related to these issues (though those issues were marked fixed) - #343 & #245