While evaluating the form starting at line 36, column 0 of #P"/home/user/quicklisp/local-projects/MBuild/Mezzano/../build-cold-image.lisp": debugger invoked on a SIMPLE-ERROR in thread #<THREAD "main thread" RUNNING {1000510083}>: Duplicate symbol :PROGN. 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 EVAL of current toplevel form. 1: [CONTINUE] Ignore error and continue loading file "/home/user/quicklisp/local-projects/MBuild/Mezzano/../build-cold-image.lisp". 2: [ABORT ] Abort loading file "/home/user/quicklisp/local-projects/MBuild/Mezzano/../build-cold-image.lisp". 3: Ignore runtime option --load "../build-cold-image.lisp". 4: Skip rest of --eval and --load options. 5: Skip to toplevel READ/EVAL/PRINT loop. 6: [EXIT ] Exit SBCL (calling #'EXIT, killing the process). (MEZZANO.LAP::PERFORM-ASSEMBLY-PASS1 #<HASH-TABLE :TEST EQL :COUNT 105 {1002611693}> (MEZZANO.COMPILER.BACKEND.ARM64::ENTRY-POINT (:DEBUG NIL) (:GC :NO-FRAME :INCOMING-ARGUMENTS :RCX :LAYOUT #*) (MEZZANO.LAP.ARM64:STP :X29 :X30 (:PRE :SP -16)) (:GC :NO-FRAME :INCOMING-ARGUMENTS :RCX :LAYOUT #*00) (MEZZANO.LAP.ARM64:ADD :X29 :SP :XZR) (:GC :FRAME :INCOMING-ARGUMENTS :RCX) (MEZZANO.LAP.ARM64:SUB :SP :SP 16) (MEZZANO.LAP.ARM64:STR :X26 (:X29 -8)) (MEZZANO.LAP.ARM64:STR :X26 (:X29 -16)) (:GC :FRAME :LAYOUT #*11 :INCOMING-ARGUMENTS :RCX) (:DEBUG NIL) ...) 16) source: (ERROR "Duplicate symbol ~S." I) 0]