build cache stats:
cache directory: build\.build_cache
cache hit rate: 0%
cache hit: 0
cache hit total time: 0.000s
cache miss: 0
cache miss total time: 0.000s
new cached files: 0
remote cache hit: 0
remote new cached files: 0
preprocess failed: 0
compile fallback count: 0
compile total time: 0.000s

create ok!
compile_commands.json updated!
error: @programdir\core\main.lua:329: @programdir\rules\platform\windows\subsystem\xmake.lua:44: attempt to call a nil value (global 'upper')
stack traceback:
    [@programdir\rules\platform\windows\subsystem\xmake.lua:44]: in function 'on_config'
    [...dir\core\sandbox\modules\import\core\project\project.lua:145]: in function '_config_target'
    [...dir\core\sandbox\modules\import\core\project\project.lua:180]: in function '_config_targets'
    [...dir\core\sandbox\modules\import\core\project\project.lua:227]: in function 'load_targets'
    [@programdir\actions\run\main.lua:203]:
    [C]: in function 'xpcall'
    [@programdir\core\base\utils.lua:246]:
    [@programdir\core\base\task.lua:504]: in function 'run'
    [@programdir\core\main.lua:327]: in function 'cotask'
    [@programdir\core\base\scheduler.lua:406]:

stack traceback:
        [C]: in function 'error'
        @programdir\core\base\os.lua:1075: in function 'base/os.raiselevel'
        (...tail calls...)
        @programdir\core\main.lua:329: in upvalue 'cotask'
        @programdir\core\base\scheduler.lua:406: in function <@programdir\core\base\scheduler.lua:399>
warning: If cmake build failure, set package config cmake = false fallback to b2 for the build