rust-web3 cannot decode Infura getBlockByNumber response for pending block

[e00E]

because Infura sets miner to null.

rust-web3 has a non optional author/miner field that defaults to the 0 address if the field is not present in the json:

rust-web3/src/types/block.rs

Line 18 in 5520ec2

pub author: H160,

However when testing with Infura I found that they set miner to null which makes deserialization in rust-web3 fail. Potential solutions:

• make the rust field optional which would automatically handle missing and null
• see if there is a serde attribute (maybe from the serde_with crate) that also turns null into default
• do not make any change because Infura is returning a response that is invalid according to the ethrpc specification

[tomusdrw]

see if there is a serde attribute (maybe from the serde_with crate) that also turns null into default

I like this one. Can we use #[serde(deserialize_with = "path")] for that?