add long explanation for E0453, lint attribute overruled by outer forbid
This is a subtask of #32777.
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@ -1444,6 +1444,51 @@ lint name). Ensure the attribute is of this form:
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```
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"##,
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E0453: r##"
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A lint check attribute was overruled by a `forbid` directive set as an
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attribute on an enclosing scope, or on the command line with the `-F` option.
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Example of erroneous code:
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```compile_fail
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#![forbid(non_snake_case)]
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#[allow(non_snake_case)]
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fn main() {
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let MyNumber = 2; // error: allow(non_snake_case) overruled by outer
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// forbid(non_snake_case)
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}
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```
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The `forbid` lint setting makes code that fails the lint check result in a
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compilation-terminating error (like `deny`), but also prevents itself from
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being overridden by inner attributes.
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You can change `forbid` to `deny` (or use `-D` instead of `-F` if the `forbid`
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setting was given as a command-line option) to allow the inner lint check
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attribute:
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```
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#![deny(non_snake_case)]
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#[allow(non_snake_case)]
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fn main() {
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let MyNumber = 2; // ok!
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}
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```
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Alternatively, edit the code to pass the lint check, and remove the overruled
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attribute:
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```
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#![forbid(non_snake_case)]
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fn main() {
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let my_number = 2;
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}
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```
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"##,
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E0496: r##"
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A lifetime name is shadowing another lifetime name. Erroneous code example:
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@ -1628,7 +1673,6 @@ register_diagnostics! {
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E0314, // closure outlives stack frame
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E0315, // cannot invoke closure outside of its lifetime
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E0316, // nested quantification of lifetimes
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E0453, // overruled by outer forbid
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E0473, // dereference of reference outside its lifetime
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E0474, // captured variable `..` does not outlive the enclosing closure
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E0475, // index of slice outside its lifetime
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