1 error[E0423]: expected value, found trait `SomeTrait`
2 --> $DIR/E0033-teach.rs:8:37
4 LL | let trait_obj: &dyn SomeTrait = SomeTrait;
5 | ^^^^^^^^^ not a value
7 error[E0038]: the trait `SomeTrait` cannot be made into an object
8 --> $DIR/E0033-teach.rs:8:20
10 LL | trait SomeTrait {
11 | --------- this trait cannot be made into an object...
13 | --- ...because associated function `foo` has no `self` parameter
15 LL | let trait_obj: &dyn SomeTrait = SomeTrait;
16 | ^^^^^^^^^^^^^^ the trait `SomeTrait` cannot be made into an object
18 = help: consider turning `foo` into a method by giving it a `&self` argument or constraining it with `where Self: Sized`
20 error[E0033]: type `&dyn SomeTrait` cannot be dereferenced
21 --> $DIR/E0033-teach.rs:12:9
23 LL | let &invalid = trait_obj;
24 | ^^^^^^^^ type `&dyn SomeTrait` cannot be dereferenced
26 = note: This error indicates that a pointer to a trait type cannot be implicitly dereferenced by a pattern. Every trait defines a type, but because the size of trait implementors isn't fixed, this type has no compile-time size. Therefore, all accesses to trait types must be through pointers. If you encounter this error you should try to avoid dereferencing the pointer.
28 You can read more about trait objects in the Trait Objects section of the Reference: https://doc.rust-lang.org/reference/types.html#trait-objects
30 error: aborting due to 3 previous errors
32 Some errors have detailed explanations: E0033, E0038, E0423.
33 For more information about an error, try `rustc --explain E0033`.