ECL Error OSX - bracket nesting level exceeded maximum of 256

[cbaggers]

;;; Emitting code for *.

;;; Emitting code for *.

;;; Emitting code for PRINT-M4.

/Users/travis/.cache/common-lisp/ecl-16.1.3-unknown-macosx-x64/Users/travis/.roswell/lisp/quicklisp/dists/quicklisp/software/rtg-math-20170227-git/matrices/matrix4/consing.c:6382:11: fatal error: bracket nesting level exceeded maximum of 256

          {

          ^

/Users/travis/.cache/common-lisp/ecl-16.1.3-unknown-macosx-x64/Users/travis/.roswell/lisp/quicklisp/dists/quicklisp/software/rtg-math-20170227-git/matrices/matrix4/consing.c:6382:11: note: use -fbracket-depth=N to increase maximum nesting level

1 error generated.

;;; Internal error:

;;;   ** Error code 1 when executing

;;; (RUN-PROGRAM "clang" ("-I." "-I/usr/local/Cellar/ecl/16.1.3/include/" "-g" "-O2" "-fPIC" "-fno-common" "-D_THREAD_SAFE" "-Ddarwin" "-O2" "-c" "/Users/travis/.cache/common-lisp/ecl-16.1.3-unknown-macosx-x64/Users/travis/.roswell/lisp/quicklisp/dists/quicklisp/software/rtg-math-20170227-git/matrices/matrix4/consing.c" "-o" "/Users/travis/.cache/common-lisp/ecl-16.1.3-unknown-macosx-x64/Users/travis/.roswell/lisp/quicklisp/dists/quicklisp/software/rtg-math-20170227-git/matrices/matrix4/consing.o"))

Gross! fix this and remove allowed failure from travis. Needs to be fixed in rtg-math