Build, Test, Sleep, Repeat: Modernizing Julia's CI pipeline

Julia's Continuous Integration pipeline has struggled for many years now as the needs of the community have significantly outgrown the old Buildbot system. In this talk we will detail the efforts of the CI dev team to provide reliability, reproducibility, security, and greater introspective ability in our CI builds. These CI improvements aren't just helping the Julia project itself, but also other related open-source projects, as we continue to generate self-contained, useful building blocks.