Killing `ember try:each` breaks local copy, all `ember` commands

[allthesignals]

If I interrupt or kill ember try:each, it seems to throw my application into disarray with a number of different errors:

Unexpected end of JSON input
    at JSON.parse (<anonymous>)

 Error: Cannot find module './core.json'

All subsequent uses of ember command are also broken...

rm -rf node_modules && yarn fixes it but can take several minutes to install depending on project size. Is there a way to safely interrupt ember try?