conflict between 2 config vars in web dashboard

[y-nk]

trafficstars

Brief summary

when passing --out web-dashboard, if passing K6_WEB_DASHBOARD=true then there's an error "the port 5665 is already in use"

k6 version

1.0.0rc

OS

macOS

Docker version and image (if applicable)

No response

Steps to reproduce the problem

WEB_DASHBOARD=true k6 run --out web-dashboard script.js

Expected behaviour

i guess it should work?

Actual behaviour

it crashes with a:

time="2025-04-18T11:44:34Z" level=error msg="listen tcp :5665: bind: address already in use"

error