RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/thiserror/tests/ui/source-enum-not-error.stderr

@@ -0,0 +1,28 @@
+error[E0599]: the method `as_dyn_error` exists for reference `&NotError`, but its trait bounds were not satisfied
+   --> tests/ui/source-enum-not-error.rs:10:9
+    |
+4   | pub struct NotError;
+    | --------------------
+    | |
+    | doesn't satisfy `NotError: AsDynError`
+    | doesn't satisfy `NotError: std::error::Error`
+...
+10  |         source: NotError,
+    |         ^^^^^^ method cannot be called on `&NotError` due to unsatisfied trait bounds
+    |
+    = note: the following trait bounds were not satisfied:
+            `NotError: std::error::Error`
+            which is required by `NotError: AsDynError`
+            `&NotError: std::error::Error`
+            which is required by `&NotError: AsDynError`
+note: the following trait must be implemented
+   --> $RUST/std/src/error.rs
+    |
+    | / pub trait Error: Debug + Display {
+    | |     /// The lower-level source of this error, if any.
+    | |     ///
+    | |     /// # Examples
+...   |
+    | |     }
+    | | }
+    | |_^