Have you seen the abcl-1.3.0-dev-svn-14545-fasl42-linux-x86 results already?
I've published the diff report here: http://common-lisp.net/project/cl-test-grid/abcl/abcl-diff13.html
What deserves attention is exscribe crash.
Reproduce like this: rm -rf ~/.cache/common-lisp/ java -jar lisps/abcl/dist/abcl.jar --eval '(ql:quickload :exscribe)' > exscribe.load.log 2>&1 less exscribe.load.log
The compiler crashes due to java.lang.Error: "ABCL Debug.assertTrue() assertion failed!"