Cannot use dynamic slaves together with SCM polling and wildcard branches in "branches to build"
Ref RQF0609852
Upstream bug (2010!) https://issues.jenkins-ci.org/browse/JENKINS-7643
Workarounds to document:
- set up a static slave with persistent storage
- do not use wildcards in "branches to build" (a list is possible)
- use web hooks instead of SCM polling