refactor(util-schemas): non_exhaustive for all error types

Author: weihanglo

crates/cargo-util-schemas/src/core/package_id_spec.rs

@@ -269,6 +269,7 @@ impl<'de> de::Deserialize<'de> for PackageIdSpec {
 }
 
 /// Error parsing a [`PackageIdSpec`].
+#[non_exhaustive]
 #[derive(Debug, thiserror::Error)]
 pub enum PackageIdSpecError {
     #[error("unsupported source protocol: {0}")]

crates/cargo-util-schemas/src/core/partial_version.rs

@@ -160,6 +160,7 @@ impl<'de> serde::Deserialize<'de> for PartialVersion {
 }
 
 /// Error parsing a [`PartialVersion`].
+#[non_exhaustive]
 #[derive(Debug, thiserror::Error)]
 pub enum PartialVersionError {
     #[error("unexpected version requirement, expected a version like \"1.32\"")]

crates/cargo-util-schemas/src/restricted_names.rs

@@ -3,6 +3,7 @@
 type Result<T> = std::result::Result<T, NameValidationError>;
 
 /// Error validating names in Cargo.
+#[non_exhaustive]
 #[derive(Debug, thiserror::Error)]
 pub enum NameValidationError {
     #[error("{0} cannot be empty")]