the NLL borrow checker finally got fully enabled by default https://jackh726.github.io/rust/2022/06/10/nll-stabilization.html

有3中checker

    AST borrowck, (已弃)
    MIR borrowck,
    and polonius (well, in progress).

简单来说就是现在的错误提示信息更加准确了。
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FROM 117.147.21.*