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+error[E0277]: the trait bound `foo::Struct: Trait` is not satisfied because the trait comes from a different crate version
+  --> foo-current.rs:13:19
+   |
+13 |     check_trait::<foo::Struct>();
+   |                   ^^^^^^^^^^^ the trait `Trait` is not implemented for `foo::Struct`
+   |
+note: there are multiple different versions of crate `foo` in the dependency graph
+  --> foo-current.rs:7:1
+   |
+4  | extern crate foo;
+   | ----------------- one version of crate `foo` is used here, as a direct dependency of the current crate
+5  |
+6  | pub struct Struct;
+   | ----------------- this type implements the required trait
+7  | pub trait Trait {}
+   | ^^^^^^^^^^^^^^^ this is the required trait
+   |
+  ::: foo-prev.rs:X:Y
+   |
+4  | pub struct Struct;
+   | ----------------- this type doesn't implement the required trait
+5  | pub trait Trait {}
+   | --------------- this is the found trait
+   = note: two types coming from two different versions of the same crate are different types even if they look the same
+   = help: you can use `cargo tree` to explore your dependency tree
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0277`.
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