I asked Travis on twitter and they said it was due to the Apache other projects build queues
https://twitter.com/travisci/status/1143893051460526080 -ash On 26 June 2019 20:48:33 BST, Jarek Potiuk <jarek.pot...@polidea.com> wrote: >Hello everyone, > >For the last few days the Travis builds for apache/airflow project are >waiting in a queue for hours. This is not a normal situation. I've >opened >INFRA ticket for that: >https://issues.apache.org/jira/browse/INFRA-18657 > >J. > >-- > >Jarek Potiuk >Polidea <https://www.polidea.com/> | Principal Software Engineer > >M: +48 660 796 129 <+48660796129> >[image: Polidea] <https://www.polidea.com/>