* (ql:quickload :mito)
To load "mito":
  Load 12 ASDF systems:
    alexandria asdf cl-ppcre cl-reexport closer-mop dbi
    dissect esrap local-time optima sxql uiop
  Install 1 Quicklisp release:
    mito
; Fetching #<URL "http://beta.quicklisp.org/archive/mito/2018-04-30/mito-20180430-git.tgz">
; 34.98KB
==================================================
35,820 bytes in 0.01 seconds (3498.05KB/sec)
; Loading "mito"
..;
; caught ERROR:
;   READ error during COMPILE-FILE:
;
;     Symbol "DEBUG-SOURCE-FORM" not found in the SB-DI package.
;
;       Line: 18, Column: 43, File-Position: 562
;
;       Stream: #<SB-INT:FORM-TRACKING-STREAM for "file /Users/matzy/quicklisp/dists/quicklisp/software/dissect-20180131-git/backend/sbcl.lisp" {1003FEDC13}>

debugger invoked on a UIOP/LISP-BUILD:COMPILE-FILE-ERROR in thread
#<THREAD "main thread" RUNNING {10008A0083}>:
  COMPILE-FILE-ERROR while
  compiling #<CL-SOURCE-FILE "dissect" "backend" "sbcl">

Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [RETRY                        ] Retry
                                     compiling #<CL-SOURCE-FILE "dissect" "backend" "sbcl">.
  1: [ACCEPT                       ] Continue, treating
                                     compiling #<CL-SOURCE-FILE "dissect" "backend" "sbcl">
                                     as having been successful.
  2:                                 Retry ASDF operation.
  3: [CLEAR-CONFIGURATION-AND-RETRY] Retry ASDF operation after resetting the
                                     configuration.
  4:                                 Retry ASDF operation.
  5:                                 Retry ASDF operation after resetting the
                                     configuration.
  6: [ABORT                        ] Give up on "mito"
  7:                                 Exit debugger, returning to top level.

(UIOP/LISP-BUILD:CHECK-LISP-COMPILE-RESULTS NIL T T "~/asdf-action::format-action/" ((#<ASDF/LISP-ACTION:COMPILE-OP > . #<ASDF/LISP-ACTION:CL-SOURCE-FILE "dissect" "backend" "sbcl">)))
; File has been modified since compilation:
;   SYS:CONTRIB;ASDF;UIOP.LISP.NEWEST
; Using form offset instead of character position.

   source: (ERROR 'COMPILE-FILE-ERROR :CONTEXT-FORMAT CONTEXT-FORMAT
                  :CONTEXT-ARGUMENTS CONTEXT-ARGUMENTS)
0]