Dear Firedrakers, As of this afternoon, the build test systems for Firedrake and Gusto master branches are containerised, Thetis will follow shortly. This enables us to use significantly more build resources. For Gusto and Thetis it also removes the need for the build system to build Firedrake (and in particular PETSc) on every push. Short version: this makes build testing on Jenkins faster. If you maintain branches of Firedrake, Gusto or Thetis: please merge or rebase on the respective master. This will cause your Jenkinsfile to pick up the necessary updates. For Thetis branch maintainers, you need to wait until the branch lands. This will hopefully be in the next 24 hours. If you are using a continuous integration system for a project that builds on Firedrake: consider basing your builder on the firedrakeproject/firedrake-vanilla:latest container on Docker Hub. This will save you the load of rebuilding Firedrake every time. If you just use Firedrake: You don’t need to do anything. You shouldn’t notice the change. Regards, David -- Dr David Ham Department of Mathematics Imperial College London https://www.imperial.ac.uk/people/david.ham https://www.firedrakeproject.org