**This project is for the Heroku CLI only. Use https://help.heroku.com for anything that is not specific to the CLI itself.** Do you want to request a *feature* or report a *bug*? ----------------------------------------------------- Bug report What is the current behavior? ----------------------------- When I run `heroku run` with the `-x` flag, it gives a `command parsing error` irrespective of the command that is used or the app that it is being run on. Example from my terminal: ``` ❯ heroku run -x echo hello world! -a test-app Running echo hello world! on ⬢ test-app... up, run.5122 (Hobby) command parsing error% ``` What is the expected behavior? ------------------------------ It should return a zero exit code for the above command, and return the exit code of the specified command when I'm running arbitrary commands. Heroku version: ``` ❯ heroku --version heroku/7.42.11 darwin-x64 node-v12.16.2 ``` OS version: `Mac OSX 10.15.5` No HTTP proxies or firewalls.