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error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:17
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LL | #[derive(Debug, Copy, Clone)]
| ^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
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note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
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LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
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LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
|