I like it a lot, and am surprised I didn't know about it considering I've been looking for a dead-simple git + Makefile + shell script + (chroot or Docker-like)

I like it a lot, and am surprised I didn't know about it considering I've been looking for a dead-simple git + Makefile + shell script + (chroot or Docker-like) container + simplistic topsort-prio'd shell runner pool + minimal Web UI solution for CI for some time now, of which this could totally be an adequate part to comprehend and render test reports. As a protocol, it might benefit from some enhancements, such as capturing and linking to detailed test result output files for failed tests.