is ktor 1.0.0-beta-1 not compatible with kotlin 1.3.0-rc-190 and coroutines 1.0.0-RC1?

It uses

coroutines_version=0.30.2-eap13

thanks. i'll downgrade to the compatible version

A new ktor version will be released soon supporting the coroutines RC. In the meantime sadly, the only thing you can do is to downgrade

kotlinx.coroutines

.