https://github.com/deltachat/message-parser/blob/0.14.1/Cargo.lock#L174
The version should mose certainly be 0.14.1 here.
[[package]]
name = "deltachat_message_parser"
version = "0.12.0"
dependencies = [
 "criterion",
 "nom",
 "serde",
 "serde_derive",
 "unic-idna-punycode",
]