Update Rust toolchain to 1.56.1

pbjson-build/Cargo.toml

@@ -2,7 +2,7 @@
 name = "pbjson-build"
 version = "0.2.1"
 authors = ["Raphael Taylor-Davies <[email protected]>"]
-edition = "2018"
+edition = "2021"
 description = "Generates Serialize and Deserialize implementations for prost message types"
 license = "MIT"
 keywords = ["protobuf", "json", "serde"]

pbjson-test/Cargo.toml

@@ -2,7 +2,7 @@
 name = "pbjson-test"
 version = "0.2.1"
 authors = ["Raphael Taylor-Davies <[email protected]>"]
-edition = "2018"
+edition = "2021"
 description = "Test resources for pbjson converion"
 repository = "https://github.com/influxdata/pbjson"
 

pbjson-types/Cargo.toml

@@ -3,7 +3,7 @@ name = "pbjson-types"
 version = "0.2.1"
 authors = ["Raphael Taylor-Davies <[email protected]>"]
 description = "Protobuf well known types with serde serialization support"
-edition = "2018"
+edition = "2021"
 license = "MIT"
 keywords = ["protobuf", "json", "serde"]
 categories = ["encoding"]

pbjson-types/src/duration.rs

@@ -1,6 +1,5 @@
 use crate::Duration;
 use serde::{Deserialize, Serialize};
-use std::convert::{TryFrom, TryInto};
 
 impl TryFrom<Duration> for std::time::Duration {
     type Error = std::num::TryFromIntError;

pbjson-types/src/timestamp.rs

@@ -1,7 +1,6 @@
 use crate::Timestamp;
 use chrono::{DateTime, NaiveDateTime, Utc};
 use serde::{Deserialize, Serialize};
-use std::convert::{TryFrom, TryInto};
 
 impl TryFrom<Timestamp> for chrono::DateTime<Utc> {
     type Error = std::num::TryFromIntError;

pbjson/Cargo.toml

@@ -2,7 +2,7 @@
 name = "pbjson"
 version = "0.2.1"
 authors = ["Raphael Taylor-Davies <[email protected]>"]
-edition = "2018"
+edition = "2021"
 description = "Utilities for pbjson conversion"
 license = "MIT"
 keywords = ["protobuf", "json", "serde"]

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.55"
+channel = "1.56.1"
 components = [ "rustfmt", "clippy" ]