The process has been signaled with signal "4".

[vladdancer]

When I run terra environment:enable I get an error

[Symfony\Component\Process\Exception\RuntimeException]
The process has been signaled with signal "4".

So I've run with -vvv and it seems that EnvironmentFactory->enable() throws an exception when try to execute new Process('docker-compose up -d', $this->getDockerComposePath())

I'm using MacBook (13-inch, Mid 2010), I've found issue about docker-compose
docker/compose#1885

This is happening because by default, Homebrew builds Python with all of the optimizations that the build machine can support. Assuming the build is happening on a Mac with a Sandy Bridge or newer processor, those optimizations will include the use of AVX instructions.

So the fix was to run pip install docker-compose

I leave it here if someone may need a workaround.

[jonpugh]

Thanks, @vladdancer! Installing docker-compose is not so much a workaround as a requirement!
;)

We should do more to detect missing docker-compose and inform the user on how to install it.