BUG：不应该存在的报错
using Example = struct{
a: mut string,
};
let b = 5;
do Example {
a = mut b: string, // 提示无法将 int 转化为 mut string
};Edited by mr cino
using Example = struct{
a: mut string,
};
let b = 5;
do Example {
a = mut b: string, // 提示无法将 int 转化为 mut string
};