If I clone github.com/sagemath/binary-pkg.git, change branch from develop to master in sage.yaml, and run
$ export PACKAGE="Runtime binaries only"
$ make bdist-sage-linux
I get error messages in stage-sage saying
ERROR:root:At b'.../local/share/doc/sage/html/en/reference/calculus/sage/calculus/ode.htmlX\x1e'
ERROR:root:path terminator b'\x1e' not allowed in .../local/share/doc/sage/doctrees/ca/intro/environment.pickle
What should I be doing differently?