[INFO] cloning repository https://github.com/michealkeines/TCP-Messenger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michealkeines/TCP-Messenger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichealkeines%2FTCP-Messenger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichealkeines%2FTCP-Messenger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8e8304cda05e0e016056e43dd0544a2cfcaab66
[INFO] testing michealkeines/TCP-Messenger against 1.83.0 for beta-1.84.0-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichealkeines%2FTCP-Messenger" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michealkeines/TCP-Messenger on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/michealkeines/TCP-Messenger
[INFO] finished tweaking git repo https://github.com/michealkeines/TCP-Messenger
[INFO] tweaked toml for git repo https://github.com/michealkeines/TCP-Messenger written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/michealkeines/TCP-Messenger 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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27963b8c329ec7644119ed1219dfa3a345536b0ec0b96955e54e8d1f50373a9a
[INFO] running `Command { std: "docker" "start" "-a" "27963b8c329ec7644119ed1219dfa3a345536b0ec0b96955e54e8d1f50373a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27963b8c329ec7644119ed1219dfa3a345536b0ec0b96955e54e8d1f50373a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27963b8c329ec7644119ed1219dfa3a345536b0ec0b96955e54e8d1f50373a9a", kill_on_drop: false }`
[INFO] [stdout] 27963b8c329ec7644119ed1219dfa3a345536b0ec0b96955e54e8d1f50373a9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7d9a2bc8fd0f4e6c1bae78b3edc58dadef17abc12d43daeeeb38de74c2f3e1c
[INFO] running `Command { std: "docker" "start" "-a" "c7d9a2bc8fd0f4e6c1bae78b3edc58dadef17abc12d43daeeeb38de74c2f3e1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling os_str_bytes v6.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling clap_lex v0.2.0
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v3.1.18
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling messenger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/receiver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/sender.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stdout]   --> src/server.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{ self, Read, Write };
[INFO] [stdout]    |                ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> src/server.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/server.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::Sized`
[INFO] [stdout]   --> src/server.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::marker::Sized;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::server`
[INFO] [stdout]   --> src/server.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::server;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/server.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |                         let c = temp.clone();
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/receiver.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ReceiveMessage<T> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 5 |     data: Message<T>
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/sender.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct SendMessage<T> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 5 |     data: Message<T>
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/client.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[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] 19 |         let _ = stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         lock.write(&msg);
[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] 83 |         let _ = lock.write(&msg);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[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] 96 |             let _ = lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             lock_stream.read_exact(&mut temp[..]);
[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] 97 |             let _ = lock_stream.read_exact(&mut temp[..]);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     let v = std::io::stdin().read_line(&mut line).unwrap();
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `Command { std: "docker" "inspect" "c7d9a2bc8fd0f4e6c1bae78b3edc58dadef17abc12d43daeeeb38de74c2f3e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7d9a2bc8fd0f4e6c1bae78b3edc58dadef17abc12d43daeeeb38de74c2f3e1c", kill_on_drop: false }`
[INFO] [stdout] c7d9a2bc8fd0f4e6c1bae78b3edc58dadef17abc12d43daeeeb38de74c2f3e1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7182e9c9137f652e4eefaa7f4a950ba959d3eb27cfdee9f8777a5603ae3844d3
[INFO] running `Command { std: "docker" "start" "-a" "7182e9c9137f652e4eefaa7f4a950ba959d3eb27cfdee9f8777a5603ae3844d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling messenger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/receiver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/sender.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stdout]   --> src/server.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{ self, Read, Write };
[INFO] [stdout]    |                ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> src/server.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/server.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::Sized`
[INFO] [stdout]   --> src/server.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::marker::Sized;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::server`
[INFO] [stdout]   --> src/server.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::server;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/server.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |                         let c = temp.clone();
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/receiver.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ReceiveMessage<T> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 5 |     data: Message<T>
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/sender.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct SendMessage<T> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 5 |     data: Message<T>
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/client.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[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] 19 |         let _ = stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         lock.write(&msg);
[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] 83 |         let _ = lock.write(&msg);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[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] 96 |             let _ = lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             lock_stream.read_exact(&mut temp[..]);
[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] 97 |             let _ = lock_stream.read_exact(&mut temp[..]);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/network.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TcpStream,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     Ipv4Addr,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     SocketAddr,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     SocketAddrV4,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 7 |     Shutdown
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stdout]   --> src/server.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{ self, Read, Write };
[INFO] [stdout]    |                ^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> src/server.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/server.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::Sized`
[INFO] [stdout]   --> src/server.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::marker::Sized;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::server`
[INFO] [stdout]   --> src/server.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use crate::server;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::stdin`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::stdin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:45:25
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     let v = std::io::stdin().read_line(&mut line).unwrap();
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/server.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |                         let c = temp.clone();
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/client.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[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] 19 |         let _ = stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         lock.write(&msg);
[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] 83 |         let _ = lock.write(&msg);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[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] 96 |             let _ = lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/user.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             lock_stream.read_exact(&mut temp[..]);
[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] 97 |             let _ = lock_stream.read_exact(&mut temp[..]);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "7182e9c9137f652e4eefaa7f4a950ba959d3eb27cfdee9f8777a5603ae3844d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7182e9c9137f652e4eefaa7f4a950ba959d3eb27cfdee9f8777a5603ae3844d3", kill_on_drop: false }`
[INFO] [stdout] 7182e9c9137f652e4eefaa7f4a950ba959d3eb27cfdee9f8777a5603ae3844d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa1604296b8fb684a2c99d838e2d0d4244ee3659fa8a1e1c9a84aedeb1c6b134
[INFO] running `Command { std: "docker" "start" "-a" "fa1604296b8fb684a2c99d838e2d0d4244ee3659fa8a1e1c9a84aedeb1c6b134", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/receiver.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/sender.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stderr]  --> src/network.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     TcpStream,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 4 |     Ipv4Addr,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 5 |     SocketAddr,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 6 |     SocketAddrV4,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 7 |     Shutdown
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stderr]  --> src/server.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     TcpStream,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 4 |     Ipv4Addr,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 5 |     SocketAddr,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 6 |     SocketAddrV4,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 7 |     Shutdown
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `Write`, and `self`
[INFO] [stderr]   --> src/server.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::{ self, Read, Write };
[INFO] [stderr]    |                ^^^^  ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/server.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::Sized`
[INFO] [stderr]   --> src/server.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::marker::Sized;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::server`
[INFO] [stderr]   --> src/server.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use crate::server;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/server.rs:52:29
[INFO] [stderr]    |
[INFO] [stderr] 52 |                         let c = temp.clone();
[INFO] [stderr]    |                             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `data` is never read
[INFO] [stderr]  --> src/receiver.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct ReceiveMessage<T> {
[INFO] [stderr]   |            -------------- field in this struct
[INFO] [stderr] 5 |     data: Message<T>
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `data` is never read
[INFO] [stderr]  --> src/sender.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct SendMessage<T> {
[INFO] [stderr]   |            ----------- field in this struct
[INFO] [stderr] 5 |     data: Message<T>
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/client.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[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] 19 |         let _ = stream.set_read_timeout(Some(std::time::Duration::from_millis(300)));
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/user.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         lock.write(&msg);
[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] 83 |         let _ = lock.write(&msg);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/user.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[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] 96 |             let _ = lock_stream.set_read_timeout(Some(time::Duration::from_millis(150)));
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/user.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |             lock_stream.read_exact(&mut temp[..]);
[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] 97 |             let _ = lock_stream.read_exact(&mut temp[..]);
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ipv4Addr`, `Shutdown`, `SocketAddrV4`, `SocketAddr`, and `TcpStream`
[INFO] [stderr]  --> src/network.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     TcpStream,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 4 |     Ipv4Addr,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 5 |     SocketAddr,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 6 |     SocketAddrV4,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 7 |     Shutdown
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `messenger` (lib) generated 16 warnings (run `cargo fix --lib -p messenger` to apply 9 suggestions)
[INFO] [stderr] warning: `messenger` (lib test) generated 12 warnings (11 duplicates) (run `cargo fix --lib -p messenger --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::stdin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:45:25
[INFO] [stderr]    |
[INFO] [stderr] 45 |                     let v = std::io::stdin().read_line(&mut line).unwrap();
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `messenger` (bin "messenger" test) generated 2 warnings (run `cargo fix --bin "messenger" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/messenger-f8733de49b6399a8)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test receiver::test::is_message ... ok
[INFO] [stdout] test user::test::test_convert ... ok
[INFO] [stdout] test message::test::add_message ... ok
[INFO] [stdout] test sender::test::is_message ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/messenger-ebc494140741b0fe)
[INFO] [stderr]    Doc-tests messenger
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fa1604296b8fb684a2c99d838e2d0d4244ee3659fa8a1e1c9a84aedeb1c6b134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa1604296b8fb684a2c99d838e2d0d4244ee3659fa8a1e1c9a84aedeb1c6b134", kill_on_drop: false }`
[INFO] [stdout] fa1604296b8fb684a2c99d838e2d0d4244ee3659fa8a1e1c9a84aedeb1c6b134