Twice in a row now, the macOS build failed just saying
No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself. Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received The build has been terminated
This is without any CI config change on our end, and the Linux build works fine. Looks like a macOS outage on the Travis side to me, but https://www.traviscistatus.com/ reports “All Systems Operational”.