chore: Update to 2021 edition (#1188)

README.md

@@ -45,7 +45,7 @@ For IntelliJ IDEA users, please refer to [this](https://github.com/intellij-rust
 
 ### Rust Version
 
-`tonic` currently works on Rust `1.60` and above as it requires support for the 2018 edition.
+`tonic`'s MSRV is `1.60`.
 
 ```bash
 $ rustup update

examples/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "examples"
 publish = false

examples/src/blocking/client.rs

@@ -21,7 +21,7 @@ struct BlockingClient {
 impl BlockingClient {
     pub fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
     where
-        D: std::convert::TryInto<tonic::transport::Endpoint>,
+        D: TryInto<tonic::transport::Endpoint>,
         D::Error: Into<StdError>,
     {
         let rt = Builder::new_multi_thread().enable_all().build().unwrap();

examples/src/mock/mock.rs

@@ -1,4 +1,3 @@
-use std::convert::TryFrom;
 use tonic::{
     transport::{Endpoint, Server, Uri},
     Request, Response, Status,

examples/src/uds/client.rs

@@ -5,7 +5,6 @@ pub mod hello_world {
 }
 
 use hello_world::{greeter_client::GreeterClient, HelloRequest};
-use std::convert::TryFrom;
 #[cfg(unix)]
 use tokio::net::UnixStream;
 use tonic::transport::{Endpoint, Uri};

interop/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "interop"
 publish = false

rustfmt.toml

@@ -1 +1 @@
-edition = "2018"
+edition = "2021"

tests/ambiguous_methods/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Yonathan Randolph <yonathan@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "ambiguous_methods"
 publish = false

tests/compression/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "compression"
 publish = false

tests/compression/src/lib.rs

@@ -3,7 +3,6 @@
 use self::util::*;
 use crate::util::mock_io_channel;
 use futures::{Stream, StreamExt};
-use std::convert::TryFrom;
 use std::{
     pin::Pin,
     sync::{

tests/disable_comments/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["bouzuya <m@bouzuya.net>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "disable-comments"
 publish = false

tests/extern_path/my_application/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Danny Hua <danny@42layers.io>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "my_application"
 publish = false

tests/extern_path/uuid/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Danny Hua <danny@42layers.io>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "uuid1"
 publish = false

tests/included_service/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "included_service"
 publish = false

tests/integration_tests/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "integration-tests"
 publish = false

tests/integration_tests/tests/connect_info.rs

@@ -51,8 +51,6 @@ async fn getting_connect_info() {
 
 #[cfg(unix)]
 pub mod unix {
-    use std::convert::TryFrom as _;
-
     use futures_util::FutureExt;
     use tokio::{
         net::{UnixListener, UnixStream},

tests/integration_tests/tests/status.rs

@@ -6,7 +6,6 @@ use integration_tests::pb::{
     test_client, test_server, test_stream_client, test_stream_server, Input, InputStream, Output,
     OutputStream,
 };
-use std::convert::TryFrom;
 use std::error::Error;
 use std::time::Duration;
 use tokio::sync::oneshot;

tests/root-crate-path/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "root-crate-path"
 publish = false

tests/same_name/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "same_name"
 publish = false

tests/service_named_service/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "service_named_service"
 publish = false

tests/stream_conflict/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Ben Sully <ben@bsull.io>"]
-edition = "2018"
+edition = "2021"
 name = "stream_conflict"
 publish = false
 version = "0.1.0"

tests/wellknown-compiled/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "wellknown-compiled"
 publish = false

tests/wellknown/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Lucio Franco <luciofranco14@gmail.com>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 name = "wellknown"
 publish = false

tonic-build/Cargo.toml

@@ -5,7 +5,7 @@ description = """
 Codegen module of `tonic` gRPC implementation.
 """
 documentation = "https://docs.rs/tonic-build/0.8.4/tonic_build/"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "async", "codegen", "protobuf"]
 license = "MIT"

tonic-build/src/client.rs

@@ -150,7 +150,7 @@ fn generate_connect(service_ident: &syn::Ident, enabled: bool) -> TokenStream {
             /// Attempt to create a new client by connecting to a given endpoint.
             pub async fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
             where
-                D: std::convert::TryInto<tonic::transport::Endpoint>,
+                D: TryInto<tonic::transport::Endpoint>,
                 D::Error: Into<StdError>,
             {
                 let conn = tonic::transport::Endpoint::new(dst)?.connect().await?;

tonic-health/Cargo.toml

@@ -5,7 +5,7 @@ description = """
 Health Checking module of `tonic` gRPC implementation.
 """
 documentation = "https://docs.rs/tonic-health/0.7.0/tonic-health/"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "async", "healthcheck"]
 license = "MIT"

tonic-reflection/Cargo.toml

@@ -7,7 +7,7 @@ categories = ["network-programming", "asynchronous"]
 description = """
 Server Reflection module of `tonic` gRPC implementation.
 """
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 documentation = "https://docs.rs/tonic-reflection/0.5.0/tonic-reflection/"
 keywords = ["rpc", "grpc", "async", "reflection"]

tonic-types/Cargo.toml

@@ -5,7 +5,7 @@ description = """
 A collection of useful protobuf types that can be used with `tonic`.
 """
 documentation = "https://docs.rs/tonic-types/0.5.0/tonic-types/"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "protobuf"]
 license = "MIT"

tonic-types/src/richer_error/std_messages/retry_info.rs

@@ -1,4 +1,4 @@
-use std::{convert::TryFrom, time};
+use std::time;
 
 use prost::{DecodeError, Message};
 use prost_types::Any;

tonic-web/Cargo.toml

@@ -5,7 +5,7 @@ description = """
 grpc-web protocol translation for tonic services.
 """
 documentation = "https://docs.rs/tonic-web/0.4.0/tonic-web/"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "grpc-web"]
 license = "MIT"

tonic-web/tests/integration/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 authors = ["Juan Alvarez <j@yabit.io>"]
-edition = "2018"
+edition = "2021"
 name = "integration"
 publish = false
 version = "0.1.0"

tonic/Cargo.toml

@@ -14,7 +14,7 @@ description = """
 A gRPC over HTTP/2 implementation focused on high performance, interoperability, and flexibility.
 """
 documentation = "https://docs.rs/tonic/0.8.2/tonic/"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "async", "futures", "protobuf"]
 license = "MIT"

tonic/benches-disabled/benchmarks/compiled_protos/helloworld.rs

@@ -22,7 +22,7 @@ pub mod client {
         #[doc = r" Attempt to create a new client by connecting to a given endpoint."]
         pub async fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
         where
-            D: std::convert::TryInto<tonic::transport::Endpoint>,
+            D: TryInto<tonic::transport::Endpoint>,
             D::Error: Into<StdError>,
         {
             let conn = tonic::transport::Endpoint::new(dst)?.connect().await?;

tonic/src/metadata/value.rs

@@ -7,7 +7,6 @@ use super::key::MetadataKey;
 
 use bytes::Bytes;
 use http::header::HeaderValue;
-use std::convert::TryFrom;
 use std::error::Error;
 use std::hash::{Hash, Hasher};
 use std::marker::PhantomData;
@@ -286,7 +285,6 @@ impl<VE: ValueEncoding> MetadataValue<VE> {
 ///
 /// ```
 /// # use tonic::metadata::*;
-/// # use std::convert::TryFrom;
 /// let val = AsciiMetadataValue::try_from(b"hello\xfa").unwrap();
 /// assert_eq!(val, &b"hello\xfa"[..]);
 /// ```
@@ -295,7 +293,6 @@ impl<VE: ValueEncoding> MetadataValue<VE> {
 ///
 /// ```
 /// # use tonic::metadata::*;
-/// # use std::convert::TryFrom;
 /// let val = AsciiMetadataValue::try_from(b"\n");
 /// assert!(val.is_err());
 /// ```
@@ -324,7 +321,6 @@ impl<'a, VE: ValueEncoding> TryFrom<&'a [u8]> for MetadataValue<VE> {
 ///
 /// ```
 /// # use tonic::metadata::*;
-/// # use std::convert::TryFrom;
 /// let val = AsciiMetadataValue::try_from(b"hello\xfa").unwrap();
 /// assert_eq!(val, &b"hello\xfa"[..]);
 /// ```
@@ -333,7 +329,6 @@ impl<'a, VE: ValueEncoding> TryFrom<&'a [u8]> for MetadataValue<VE> {
 ///
 /// ```
 /// # use tonic::metadata::*;
-/// # use std::convert::TryFrom;
 /// let val = AsciiMetadataValue::try_from(b"\n");
 /// assert!(val.is_err());
 /// ```
@@ -473,7 +468,6 @@ impl MetadataValue<Ascii> {
     ///
     /// ```
     /// # use tonic::metadata::*;
-    /// # use std::convert::TryFrom;
     /// let val = AsciiMetadataValue::from_key::<Ascii>("accept".parse().unwrap());
     /// assert_eq!(val, AsciiMetadataValue::try_from(b"accept").unwrap());
     /// ```

tonic/src/transport/channel/endpoint.rs

@@ -7,14 +7,7 @@ use crate::transport::service::TlsConnector;
 use crate::transport::{service::SharedExec, Error, Executor};
 use bytes::Bytes;
 use http::{uri::Uri, HeaderValue};
-use std::{
-    convert::{TryFrom, TryInto},
-    fmt,
-    future::Future,
-    pin::Pin,
-    str::FromStr,
-    time::Duration,
-};
+use std::{fmt, future::Future, pin::Pin, str::FromStr, time::Duration};
 use tower::make::MakeConnection;
 // use crate::transport::E
 

tonic/src/transport/service/connector.rs

@@ -3,8 +3,6 @@ use super::io::BoxedIo;
 #[cfg(feature = "tls")]
 use super::tls::TlsConnector;
 use http::Uri;
-#[cfg(feature = "tls-roots-common")]
-use std::convert::TryInto;
 use std::fmt;
 use std::task::{Context, Poll};
 use tower::make::MakeConnection;

tonic/src/transport/service/tls.rs

@@ -5,8 +5,6 @@ use crate::transport::{
 };
 #[cfg(feature = "tls-roots")]
 use rustls_native_certs;
-#[cfg(feature = "tls")]
-use std::convert::TryInto;
 use std::{fmt, sync::Arc};
 use tokio::io::{AsyncRead, AsyncWrite};
 #[cfg(feature = "tls")]