Fix warnings

Author: finestructure

Sources/App/Controllers/API/API+PackageCollectionController.swift

@@ -61,7 +61,11 @@ extension API {
 }
 
 
-extension PackageCollectionSigning.Model.SignedCollection: @retroactive Vapor.Content {}
+extension SignedCollection: @retroactive RequestDecodable {}
+extension SignedCollection: @retroactive ResponseEncodable {}
+extension SignedCollection: @retroactive AsyncRequestDecodable {}
+extension SignedCollection: @retroactive AsyncResponseEncodable {}
+extension SignedCollection: @retroactive Content {}
 
 
 extension API {

Tests/AppTests/Helpers/Extensions.swift

@@ -21,7 +21,9 @@ import Fluent
 // MARK: - Useful extensions
 
 
-extension Foundation.URL: Swift.ExpressibleByStringLiteral {
+extension URL: @retroactive ExpressibleByExtendedGraphemeClusterLiteral {}
+extension URL: @retroactive ExpressibleByUnicodeScalarLiteral {}
+extension URL: @retroactive ExpressibleByStringLiteral {
     public init(stringLiteral value: String) {
         precondition(!value.isEmpty, "cannot convert empty string to URL")
         self = URL(string: value)!