CALL-STACK overflow, stack size = 8712192.. upgrade FAILED for mkcl from REQUIRE using method 'load-asdf-lisp'load-asdf-fasl you can retry just that test with: ASDF_UPGRADE_TEST_TAGS="REQUIRE" ASDF_UPGRADE_TEST_METHODS="'load-asdf-lisp'load-asdf-fasl" ./test/\ run-tests.sh -u mkcl or more interactively (and maybe with rlwrap or in emacs), start with: mkcl -norc then copy/paste: (load "test/script-support.lisp") (asdf-test::da) (test-upgrade 'load-asdf-lisp'load-asdf-fasl "REQUIRE")