I'm using Docker Machine in Windows, and it uses a dumb terminal, with no colors and no progress capabilities. the reports are really hard to read. FWIW, I'm running tests using docker-compose for microservices using the real microservice architecture emulated using Docker
It seems that the --no-color isn't doing anything

although I found that https://gist.github.com/ikasty/ae76beb34be3d12b66947ebf0872602b works pretty well (if you have cat for windows)
ava --no-color
Node.js v6.9.1
win32 10.0.14393
ava 0.17
npm 4.0.2
oh I assumed it was already implemented, most colorized-by-default libraries comes with --no-color
although each tick of the spinning pipe creates a new line on the stdout, that produces the same (new) line for each step of the progress
EDIT: using the --tap option makes it all at once, disables progress, and make the output plain and completely readable! I guess I'll just be using it
@pocesar going to close this, looks like you have a workaround, and #1104 should fix any remaining issues.