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warning: any use of this value will cause an error
--> $DIR/pub_const_err.rs:6:20
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LL | pub const Z: u32 = 0 - 1;
| -------------------^^^^^-
| |
| attempt to subtract with overflow
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note: the lint level is defined here
--> $DIR/pub_const_err.rs:2:9
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LL | #![warn(const_err)]
| ^^^^^^^^^
warning: 1 warning emitted
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