:verbose t parameter of ql:quickload affects compilation result, not only output verbosity

[avodonosov]

SBCL. Quicklisp 2013-01-28.

    rm -r ~/.cache/common-lisp/
    (ql:quickload :unicly) 

works, while

    rm -r ~/.cache/common-lisp/
    (ql:quickload :unicly :verbose t) 

fails.

Seem to be caused by muffle-warning done by quicklisp in case of :verbose nil, because , if I understand right, warnings normally cause cl:compile-file third returned value failure-p to be t.

IMHO compilation result should not depend on a parameter called verpose

[metayan]

Encountered the same issue with :gsll now. SBCL 1.4.2, Quicklisp 2017-03-06.