#!/usr/bin/env checkio --domain=py run … fails

My #!/usr/bin/env (from coreutils 8.27.0.23) strips down commandline when "=" is found. The result is infinite recursive /usr/bin/env checkio exec and 100% CPU load.

Reproduced on android7 also.

So no I can run

/usr/bin/env checkio --domain=py run some-task

or

checkio run Dir/some_task.py

manually, but

Dir/some_task.py

hangs forever