fetch: propagate error when failing to make a temp dir
fetch: propagate error when failing to make a temp dir

tarantool/luarocks,luarocks/luarocks,luarocks/luarocks,tarantool/luarocks,tarantool/luarocks,keplerproject/luarocks,luarocks/luarocks,keplerproject/luarocks,keplerproject/luarocks,keplerproject/luarocks