[INFO] cloning repository https://github.com/yukinagae/chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yukinagae/chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyukinagae%2Fchat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyukinagae%2Fchat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a5fb380c8be30ae501fee7b62dc965e5d61746a
[INFO] testing yukinagae/chat against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyukinagae%2Fchat" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yukinagae/chat on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yukinagae/chat
[INFO] finished tweaking git repo https://github.com/yukinagae/chat
[INFO] tweaked toml for git repo https://github.com/yukinagae/chat written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yukinagae/chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazycell v0.4.0
[INFO] [stderr]   Downloaded net2 v0.2.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bca840c7f4dfa16c10a633a8628d09bf9069511adf67c999c4dd1172f81b956
[INFO] running `Command { std: "docker" "start" "-a" "5bca840c7f4dfa16c10a633a8628d09bf9069511adf67c999c4dd1172f81b956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bca840c7f4dfa16c10a633a8628d09bf9069511adf67c999c4dd1172f81b956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bca840c7f4dfa16c10a633a8628d09bf9069511adf67c999c4dd1172f81b956", kill_on_drop: false }`
[INFO] [stdout] 5bca840c7f4dfa16c10a633a8628d09bf9069511adf67c999c4dd1172f81b956
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fa3a222ba599d1160ad19dc819f7d7f2f7b4cf2ea4f2f9bf12f4b2018c91adf
[INFO] running `Command { std: "docker" "start" "-a" "7fa3a222ba599d1160ad19dc819f7d7f2f7b4cf2ea4f2f9bf12f4b2018c91adf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v0.3.13
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]    Compiling mio v0.6.9 (https://github.com/carllerche/mio#a5415ba3)
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mio::tcp::{TcpListener, TcpStream};
[INFO] [stdout]   |                             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserHandler`
[INFO] [stdout]  --> src/client.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use http_muncher::{Parser, ParserHandler};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/frame.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let buf = try!(input.read_u16::<BigEndian>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let len = try!(Self::read_length(header.payload_length, input));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:90:24
[INFO] [stdout]    |
[INFO] [stdout] 90 |             let mask = try!(Self::read_mask(input));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:96:27
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut payload = try!(Self::read_payload(len, input));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         try!(input.read(&mut buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         try!(input.read(&mut payload));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         try!(output.write_u16::<BigEndian>(header));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         try!(output.write(&self.payload));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:178:32
[INFO] [stdout]     |
[INFO] [stdout] 178 |             PAYLOAD_LEN_U16 => try!(output.write_u16::<BigEndian>(self.payload.len() as u16)),
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:179:32
[INFO] [stdout]     |
[INFO] [stdout] 179 |             PAYLOAD_LEN_U64 => try!(output.write_u64::<BigEndian>(self.payload.len() as u64)),
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/frame.rs:85:29
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn read(input: &mut Read) -> io::Result<WebSocketFrame> {
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn read(input: &mut dyn Read) -> io::Result<WebSocketFrame> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn read_mask(input: &mut Read) -> io::Result<[u8; 4]> {
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn read_mask(input: &mut dyn Read) -> io::Result<[u8; 4]> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:144:53
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn read_payload(payload_len: usize, input: &mut Read) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |                                                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn read_payload(payload_len: usize, input: &mut dyn Read) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:151:49
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn read_length(payload_len: u8, input: &mut Read) -> io::Result<usize> {
[INFO] [stdout]     |                                                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn read_length(payload_len: u8, input: &mut dyn Read) -> io::Result<usize> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:173:38
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn write(&self, output: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn write(&self, output: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn on_header_field(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn on_header_value(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn on_headers_complete(&mut self, parser: &mut Parser) -> bool {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stdout]    |                             ----^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mask` is never read
[INFO] [stdout]   --> src/frame.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct WebSocketFrame {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 68 |     header: WebSocketFrameHeader,
[INFO] [stdout] 69 |     mask: Option<[u8; 4]>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WebSocketFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 client.socket.shutdown(Shutdown::Both);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let _ = client.socket.shutdown(Shutdown::Both);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |                 poll.deregister(&client.socket);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 103 |                 let _ = poll.deregister(&client.socket);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frame.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |             body.write(status_code);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |             let _ = body.write(status_code);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "7fa3a222ba599d1160ad19dc819f7d7f2f7b4cf2ea4f2f9bf12f4b2018c91adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa3a222ba599d1160ad19dc819f7d7f2f7b4cf2ea4f2f9bf12f4b2018c91adf", kill_on_drop: false }`
[INFO] [stdout] 7fa3a222ba599d1160ad19dc819f7d7f2f7b4cf2ea4f2f9bf12f4b2018c91adf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea30b635866f6ad4c25407db79f79e40f9a4a3683cc2f41f7b31b26bf9f99af6
[INFO] running `Command { std: "docker" "start" "-a" "ea30b635866f6ad4c25407db79f79e40f9a4a3683cc2f41f7b31b26bf9f99af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mio::tcp::{TcpListener, TcpStream};
[INFO] [stdout]   |                             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserHandler`
[INFO] [stdout]  --> src/client.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | use http_muncher::{Parser, ParserHandler};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/frame.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let buf = try!(input.read_u16::<BigEndian>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:88:19
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let len = try!(Self::read_length(header.payload_length, input));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:90:24
[INFO] [stdout]    |
[INFO] [stdout] 90 |             let mask = try!(Self::read_mask(input));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/frame.rs:96:27
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut payload = try!(Self::read_payload(len, input));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         try!(input.read(&mut buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         try!(input.read(&mut payload));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         try!(output.write_u16::<BigEndian>(header));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         try!(output.write(&self.payload));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:178:32
[INFO] [stdout]     |
[INFO] [stdout] 178 |             PAYLOAD_LEN_U16 => try!(output.write_u16::<BigEndian>(self.payload.len() as u16)),
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/frame.rs:179:32
[INFO] [stdout]     |
[INFO] [stdout] 179 |             PAYLOAD_LEN_U64 => try!(output.write_u64::<BigEndian>(self.payload.len() as u64)),
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/frame.rs:85:29
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn read(input: &mut Read) -> io::Result<WebSocketFrame> {
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn read(input: &mut dyn Read) -> io::Result<WebSocketFrame> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn read_mask(input: &mut Read) -> io::Result<[u8; 4]> {
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn read_mask(input: &mut dyn Read) -> io::Result<[u8; 4]> {
[INFO] [stdout]     |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:144:53
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn read_payload(payload_len: usize, input: &mut Read) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |                                                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn read_payload(payload_len: usize, input: &mut dyn Read) -> io::Result<Vec<u8>> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:151:49
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn read_length(payload_len: u8, input: &mut Read) -> io::Result<usize> {
[INFO] [stdout]     |                                                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn read_length(payload_len: u8, input: &mut dyn Read) -> io::Result<usize> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/frame.rs:173:38
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn write(&self, output: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn write(&self, output: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn on_header_field(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn on_header_value(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/handler.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn on_headers_complete(&mut self, parser: &mut Parser) -> bool {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stdout]    |                             ----^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mask` is never read
[INFO] [stdout]   --> src/frame.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct WebSocketFrame {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 68 |     header: WebSocketFrameHeader,
[INFO] [stdout] 69 |     mask: Option<[u8; 4]>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WebSocketFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 client.socket.shutdown(Shutdown::Both);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let _ = client.socket.shutdown(Shutdown::Both);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |                 poll.deregister(&client.socket);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 103 |                 let _ = poll.deregister(&client.socket);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frame.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |             body.write(status_code);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 200 |             let _ = body.write(status_code);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "ea30b635866f6ad4c25407db79f79e40f9a4a3683cc2f41f7b31b26bf9f99af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea30b635866f6ad4c25407db79f79e40f9a4a3683cc2f41f7b31b26bf9f99af6", kill_on_drop: false }`
[INFO] [stdout] ea30b635866f6ad4c25407db79f79e40f9a4a3683cc2f41f7b31b26bf9f99af6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f9824972519aadd96ee55c375d3672591d82f1b1c0192885a7c5b92a9c50fd5c
[INFO] running `Command { std: "docker" "start" "-a" "f9824972519aadd96ee55c375d3672591d82f1b1c0192885a7c5b92a9c50fd5c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]  --> src/server.rs:3:29
[INFO] [stderr]   |
[INFO] [stderr] 3 | use mio::tcp::{TcpListener, TcpStream};
[INFO] [stderr]   |                             ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ParserHandler`
[INFO] [stderr]  --> src/client.rs:9:28
[INFO] [stderr]   |
[INFO] [stderr] 9 | use http_muncher::{Parser, ParserHandler};
[INFO] [stderr]   |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/frame.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/frame.rs:86:19
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let buf = try!(input.read_u16::<BigEndian>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/frame.rs:88:19
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let len = try!(Self::read_length(header.payload_length, input));
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/frame.rs:90:24
[INFO] [stderr]    |
[INFO] [stderr] 90 |             let mask = try!(Self::read_mask(input));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/frame.rs:96:27
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let mut payload = try!(Self::read_payload(len, input));
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(input.read(&mut buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(input.read(&mut payload));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         try!(output.write_u16::<BigEndian>(header));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:183:9
[INFO] [stderr]     |
[INFO] [stderr] 183 |         try!(output.write(&self.payload));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:178:32
[INFO] [stderr]     |
[INFO] [stderr] 178 |             PAYLOAD_LEN_U16 => try!(output.write_u16::<BigEndian>(self.payload.len() as u16)),
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/frame.rs:179:32
[INFO] [stderr]     |
[INFO] [stderr] 179 |             PAYLOAD_LEN_U64 => try!(output.write_u64::<BigEndian>(self.payload.len() as u64)),
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/frame.rs:85:29
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn read(input: &mut Read) -> io::Result<WebSocketFrame> {
[INFO] [stderr]    |                             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn read(input: &mut dyn Read) -> io::Result<WebSocketFrame> {
[INFO] [stderr]    |                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frame.rs:138:30
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn read_mask(input: &mut Read) -> io::Result<[u8; 4]> {
[INFO] [stderr]     |                              ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn read_mask(input: &mut dyn Read) -> io::Result<[u8; 4]> {
[INFO] [stderr]     |                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frame.rs:144:53
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn read_payload(payload_len: usize, input: &mut Read) -> io::Result<Vec<u8>> {
[INFO] [stderr]     |                                                     ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 144 |     fn read_payload(payload_len: usize, input: &mut dyn Read) -> io::Result<Vec<u8>> {
[INFO] [stderr]     |                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frame.rs:151:49
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn read_length(payload_len: u8, input: &mut Read) -> io::Result<usize> {
[INFO] [stderr]     |                                                 ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn read_length(payload_len: u8, input: &mut dyn Read) -> io::Result<usize> {
[INFO] [stderr]     |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/frame.rs:173:38
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn write(&self, output: &mut Write) -> io::Result<()> {
[INFO] [stderr]     |                                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn write(&self, output: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]     |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/handler.rs:15:35
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn on_header_field(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stderr]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/handler.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn on_header_value(&mut self, parser: &mut Parser, s: &[u8]) -> bool {
[INFO] [stderr]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/handler.rs:28:39
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn on_headers_complete(&mut self, parser: &mut Parser) -> bool {
[INFO] [stderr]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:75:29
[INFO] [stderr]    |
[INFO] [stderr] 75 |                         let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stderr]    |                             ----^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:90:21
[INFO] [stderr]    |
[INFO] [stderr] 90 |                 let mut client = server.clients.get_mut(&token).unwrap();
[INFO] [stderr]    |                     ----^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field `mask` is never read
[INFO] [stderr]   --> src/frame.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub struct WebSocketFrame {
[INFO] [stderr]    |            -------------- field in this struct
[INFO] [stderr] 68 |     header: WebSocketFrameHeader,
[INFO] [stderr] 69 |     mask: Option<[u8; 4]>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `WebSocketFrame` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:102:17
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 client.socket.shutdown(Shutdown::Both);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let _ = client.socket.shutdown(Shutdown::Both);
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:103:17
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 poll.deregister(&client.socket);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 let _ = poll.deregister(&client.socket);
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frame.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             body.write(status_code);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 200 |             let _ = body.write(status_code);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `chat` (bin "chat" test) generated 27 warnings (run `cargo fix --bin "chat" --tests` to apply 13 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chat-d80a60e8378704f2)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test frame::name ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f9824972519aadd96ee55c375d3672591d82f1b1c0192885a7c5b92a9c50fd5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9824972519aadd96ee55c375d3672591d82f1b1c0192885a7c5b92a9c50fd5c", kill_on_drop: false }`
[INFO] [stdout] f9824972519aadd96ee55c375d3672591d82f1b1c0192885a7c5b92a9c50fd5c
