Comment 1 for bug 627023

debugger invoked on a NAME-CONFLICT in thread #<THREAD "initial thread" RUNNING
                                                {1002AAEED1}>:
  USE-PACKAGE #<PACKAGE "ASDF"> causes name-conflicts in #<PACKAGE "FOO">
  between the following symbols:
    ASDF-UTILITIES:APPENDF, ALEXANDRIA.0.DEV:APPENDF
See also:
  The ANSI Standard, Section 11.1.1.2.5

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

restarts (invokable by number or by possibly-abbreviated name):
  0: [RESOLVE-CONFLICT] Resolve conflict.
  1: [ABORT ] Exit debugger, returning to top level.

(NAME-CONFLICT #<PACKAGE "FOO"> USE-PACKAGE #<PACKAGE "ASDF">)[:EXTERNAL]
0]