loop or previous error loading module 'lrucache'

版本：
lua-resty-lrucache-0.08
nginx1.9.4
ngx_lua_module-0.9.2
配置：
lua_package_path "/xxx/lua-resty-lrucache-0.08/lib/?.lua;;";

location / {
	access_by_lua_file /xxx/http_access.lua;
}

http_access.lua:
local worker_lrucache = require "resty.lrucache"
local c_lrucache, err = worker_lrucache.new(100000) -- allow up to 100000 items in the cache
if not c_lrucache then
return error("failed to create the cache: " .. (err or "unknown"))
end
c_lrucache:get("dog")
c_lrucache:set("dog", { age = 10 }, 0.1)

报错： loop or previous error loading module 'lrucache'

Reproduce the report with lua-resty-lrucache-0.08, nginx 1.9.4, ngx_lua_module-0.9.2, and the shown lua_package_path. Start with the require "resty.lrucache" line in http_access.lua and the reported module-loading error. Done means identifying why the module load loops or reuses a previous error and recording the confirmed cause.