Set "invalid_codeblock_attributes" lint to warning level by default
Set "invalid_codeblock_attributes" lint to warning level by default

graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust