makeNonSilent
ReportBuffer#-=
Revert "ReportBuffer#-="

This reverts commit f43a3ac971e5ac3c38f9bc1b751c106bb85476f8.
It was just plain wrong.
WIP: reportFirstDivergentError

not sure reportFirstDivergentError should be in reportBuffer
comments
TryTwice
wip