14 lines
702 B
Plaintext
14 lines
702 B
Plaintext
warning: captured variable cannot escape `FnMut` closure body
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--> $DIR/issue-40510-1.rs:8:9
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LL | || {
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| - inferred to be a `FnMut` closure
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LL | &mut x
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| ^^^^^^ returns a reference to a captured variable which escapes the closure body
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= note: `FnMut` closures only have access to their captured variables while they are executing...
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= note: ...therefore, they cannot allow references to captured variables to escape
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= warning: this error has been downgraded to a warning for backwards compatibility with previous releases
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= warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
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