Scala build broken for sbt 1.4.9

Downloading sbt launcher for 1.4.9:
   From  https://repo.scala-sbt.org/scalasbt/maven-releases/org/scala-sbt/sbt-launch/1.4.9/sbt-launch-1.4.9.jar
    To  /home/travis/.sbt/launchers/1.4.9/sbt-launch.jar 

The problem most likely is, that bintray is discontinued and the new sbt release is published to github now.

If you use sbt-extras then you might need to upgrade it.

Example:

https://travis-ci.com/github/medeia/medeia/jobs/489969616

Updates sbt-extras version to current master by froth · Pull Request #1980 · travis-ci/travis-build · GitHub created a pull request

Release 1.4.8 · sbt/sbt · GitHub provides details of a workaround until this is merged