Traceback (most recent call last):
   0 File "/root/.roswell/lisp/asdf/3.3.7.2/asdf.lisp"
       In (LAMBDA (CONDITION) :IN PERFORM)
     Args (#<SIMPLE-ERROR "AVI is supported on Windows only" {120B0E16C3}>)
   1 File "unknown"
       In SB-KERNEL::%SIGNAL
     Args (#<SIMPLE-ERROR "AVI is supported on Windows only" {120B0E16C3}>)
   2 File "unknown"
       In ERROR
     Args ("AVI is supported on Windows only")
   3 File "unknown"
       In SB-INT:SIMPLE-EVAL-IN-LEXENV
     Args ((ERROR "AVI is supported on Windows only") #<NULL-LEXENV>)
   4 File "unknown"
       In SB-EXT:EVAL-TLF
     Args ((ERROR "AVI is supported on Windows only") 0 NIL)
   5 File "unknown"
       In (LABELS SB-FASL::EVAL-FORM :IN SB-INT:LOAD-AS-SOURCE)
     Args ((ERROR "AVI is supported on Windows only") 0)
   6 File "unknown"
       In (LAMBDA (SB-KERNEL:FORM &KEY :CURRENT-INDEX &ALLOW-OTHER-KEYS) :IN SB-INT:LOAD-AS-SOURCE)
     Args ((ERROR "AVI is supported on Windows only") :CURRENT-INDEX 0)
   7 File "unknown"
       In SB-C::%DO-FORMS-FROM-INFO
     Args (#<FUNCTION (LAMBDA (SB-KERNEL:FORM &KEY :CURRENT-INDEX &ALLOW-OTHER-KEYS) :IN SB-INT:LOAD-AS-SOURCE) {7F341C30CCFB}> #<SB-C::SOURCE-INFO {120B0CA053}> SB-C::INPUT-ERROR-IN-LOAD)
   8 File "unknown"
       In SB-INT:LOAD-AS-SOURCE
     Args (#<SB-INT:FORM-TRACKING-STREAM for "file /tmp/checker/lispnik-im/im-avi-cffi.asd" {120B0E0463}> :VERBOSE NIL :PRINT NIL :CONTEXT "loading")
   9 File "unknown"
       In (LABELS SB-FASL::LOAD-STREAM-1 :IN LOAD)
     Args (#<SB-INT:FORM-TRACKING-STREAM for "file /tmp/checker/lispnik-im/im-avi-cffi.asd" {120B0E0463}> NIL)
Condition LOAD-SYSTEM-DEFINITION-ERROR: Error while trying to load definition for system im-avi-cffi from pathname /tmp/checker/lispnik-im/im-avi-cffi.asd: AVI is supported on Windows only