Vendor dependencies for 0.3.0 release

vendor/erased-serde/tests/ui/missing-supertrait.rs

@@ -0,0 +1,7 @@
+use erased_serde::serialize_trait_object;
+
+pub trait MyTrait {}
+
+serialize_trait_object!(MyTrait);
+
+fn main() {}

vendor/erased-serde/tests/ui/missing-supertrait.stderr

@@ -0,0 +1,20 @@
+error[E0277]: the trait bound `__T: serde::Serialize` is not satisfied
+ --> tests/ui/missing-supertrait.rs:5:1
+  |
+5 | serialize_trait_object!(MyTrait);
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::Serialize` is not implemented for `__T`, so it does not implement `erased_serde::Serialize`
+  |
+  = note: required for `__T` to implement `erased_serde::Serialize`
+note: required by a bound in `require_erased_serialize_impl`
+ --> src/private.rs
+  |
+  | pub fn require_erased_serialize_impl<T>()
+  |        ----------------------------- required by a bound in this function
+  | where
+  |     T: ?Sized + crate::Serialize,
+  |                 ^^^^^^^^^^^^^^^^ required by this bound in `require_erased_serialize_impl`
+  = note: this error originates in the macro `$crate::__internal_serialize_trait_object` which comes from the expansion of the macro `serialize_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: consider further restricting type parameter `__T` with trait `Serialize`
+  |
+5 | serialize_trait_object!(MyTrait + serde_core::ser::Serialize);
+  |                                 ++++++++++++++++++++++++++++