[INFO] cloning repository https://github.com/gluaxspeed/r2wc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gluaxspeed/r2wc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluaxspeed%2Fr2wc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluaxspeed%2Fr2wc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdc59383aab43b4c6439f6b4eae38cd2208c082f
[INFO] testing gluaxspeed/r2wc against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluaxspeed%2Fr2wc" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gluaxspeed/r2wc 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/gluaxspeed/r2wc
[INFO] finished tweaking git repo https://github.com/gluaxspeed/r2wc
[INFO] tweaked toml for git repo https://github.com/gluaxspeed/r2wc written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gluaxspeed/r2wc 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 stopwatch v0.0.7
[INFO] [stderr]   Downloaded ncurses v5.94.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ccb396fe22eb08f3d0bb0cf82f183ee47bcfb0fa7118a86b4b592c90d510cf30
[INFO] running `Command { std: "docker" "start" "-a" "ccb396fe22eb08f3d0bb0cf82f183ee47bcfb0fa7118a86b4b592c90d510cf30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccb396fe22eb08f3d0bb0cf82f183ee47bcfb0fa7118a86b4b592c90d510cf30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccb396fe22eb08f3d0bb0cf82f183ee47bcfb0fa7118a86b4b592c90d510cf30", kill_on_drop: false }`
[INFO] [stdout] ccb396fe22eb08f3d0bb0cf82f183ee47bcfb0fa7118a86b4b592c90d510cf30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3ea5ba5758fc9d4d5cff19bb8715de9138c038264d4661ac00c24c8d893d7e1e
[INFO] running `Command { std: "docker" "start" "-a" "3ea5ba5758fc9d4d5cff19bb8715de9138c038264d4661ac00c24c8d893d7e1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling ncurses v5.94.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling r2wc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `set_port` is never used
[INFO] [stdout]   --> src/connection.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn set_port() -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_server` is never used
[INFO] [stdout]   --> src/connection.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn create_server() -> TcpListener {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_peer`, `new_connection`, `new_server_connection`, `await_client`, `await_client_timeout`, and `reject_other_clients` are never used
[INFO] [stdout]    --> src/connection.rs:84:12
[INFO] [stdout]     |
[INFO] [stdout] 83  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 84  |     pub fn get_peer(&self) -> Option<Peer> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn new_server_connection(msg_size: usize) -> (Connection, TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn await_client_timeout(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     pub fn reject_other_clients(&self, server: &TcpListener) -> (bool, Option<Peer>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_server_port` is never used
[INFO] [stdout]   --> src/connection.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_server_port() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_client` is never used
[INFO] [stdout]   --> src/connection/peer.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Peer {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_client(server: &TcpListener) -> Option<Peer> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_server` is never used
[INFO] [stdout]   --> src/connection.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn connect_server() -> TcpStream {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_connection`, `new_client_connection`, and `await_client` are never used
[INFO] [stdout]    --> src/connection.rs:96:12
[INFO] [stdout]     |
[INFO] [stdout] 83  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     pub fn new_client_connection(msg_size: usize) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/connection/peer.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Peer {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn new(stream: TcpStream, who: String) -> Peer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/server.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     &line.pop();
[INFO] [stdout]     |                     ^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     let _ = &line.pop();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/server.rs:195:21
[INFO] [stdout]     |
[INFO] [stdout] 195 |                     &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 195 |                     let _ = &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[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" "3ea5ba5758fc9d4d5cff19bb8715de9138c038264d4661ac00c24c8d893d7e1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea5ba5758fc9d4d5cff19bb8715de9138c038264d4661ac00c24c8d893d7e1e", kill_on_drop: false }`
[INFO] [stdout] 3ea5ba5758fc9d4d5cff19bb8715de9138c038264d4661ac00c24c8d893d7e1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d24b8f1f165eaafa9727963e1f40d8d4c546e3f5d1104119385bf4c5c9a5974d
[INFO] running `Command { std: "docker" "start" "-a" "d24b8f1f165eaafa9727963e1f40d8d4c546e3f5d1104119385bf4c5c9a5974d", kill_on_drop: false }`
[INFO] [stderr]    Compiling r2wc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `set_port` is never used
[INFO] [stdout]   --> src/connection.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn set_port() -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_server` is never used
[INFO] [stdout]   --> src/connection.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn create_server() -> TcpListener {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_peer`, `new_connection`, `new_server_connection`, `await_client`, `await_client_timeout`, and `reject_other_clients` are never used
[INFO] [stdout]    --> src/connection.rs:84:12
[INFO] [stdout]     |
[INFO] [stdout] 83  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 84  |     pub fn get_peer(&self) -> Option<Peer> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn new_server_connection(msg_size: usize) -> (Connection, TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     pub fn await_client_timeout(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     pub fn reject_other_clients(&self, server: &TcpListener) -> (bool, Option<Peer>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_client` is never used
[INFO] [stdout]   --> src/connection/peer.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Peer {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn get_client(server: &TcpListener) -> Option<Peer> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_server_port` is never used
[INFO] [stdout]   --> src/connection.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_server_port() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `connect_server` is never used
[INFO] [stdout]   --> src/connection.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn connect_server() -> TcpStream {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_connection`, `new_client_connection`, and `await_client` are never used
[INFO] [stdout]    --> src/connection.rs:96:12
[INFO] [stdout]     |
[INFO] [stdout] 83  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     pub fn new_client_connection(msg_size: usize) -> Connection {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/connection/peer.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Peer {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn new(stream: TcpStream, who: String) -> Peer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/server.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     &line.pop();
[INFO] [stdout]     |                     ^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     let _ = &line.pop();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/server.rs:195:21
[INFO] [stdout]     |
[INFO] [stdout] 195 |                     &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 195 |                     let _ = &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[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" "d24b8f1f165eaafa9727963e1f40d8d4c546e3f5d1104119385bf4c5c9a5974d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24b8f1f165eaafa9727963e1f40d8d4c546e3f5d1104119385bf4c5c9a5974d", kill_on_drop: false }`
[INFO] [stdout] d24b8f1f165eaafa9727963e1f40d8d4c546e3f5d1104119385bf4c5c9a5974d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 517870006d73b2ab288c0aa633651c62bbfab08c6fea9448c8ddf8efb8de90c5
[INFO] running `Command { std: "docker" "start" "-a" "517870006d73b2ab288c0aa633651c62bbfab08c6fea9448c8ddf8efb8de90c5", kill_on_drop: false }`
[INFO] [stderr] warning: function `set_port` is never used
[INFO] [stderr]   --> src/connection.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn set_port() -> String {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `create_server` is never used
[INFO] [stderr]   --> src/connection.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn create_server() -> TcpListener {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `get_peer`, `new_connection`, `new_server_connection`, `await_client`, `await_client_timeout`, and `reject_other_clients` are never used
[INFO] [stderr]    --> src/connection.rs:84:12
[INFO] [stderr]     |
[INFO] [stderr] 83  | impl Connection {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] 84  |     pub fn get_peer(&self) -> Option<Peer> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 111 |     pub fn new_server_connection(msg_size: usize) -> (Connection, TcpListener) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 162 |     pub fn await_client_timeout(&mut self, server: &TcpListener) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 |     pub fn reject_other_clients(&self, server: &TcpListener) -> (bool, Option<Peer>) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `get_client` is never used
[INFO] [stderr]   --> src/connection/peer.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl Peer {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 17 |     pub fn get_client(server: &TcpListener) -> Option<Peer> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `set_server_port` is never used
[INFO] [stderr]   --> src/connection.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_server_port() -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `connect_server` is never used
[INFO] [stderr]   --> src/connection.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn connect_server() -> TcpStream {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new_connection`, `new_client_connection`, and `await_client` are never used
[INFO] [stderr]    --> src/connection.rs:96:12
[INFO] [stderr]     |
[INFO] [stderr] 83  | impl Connection {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 96  |     pub fn new_connection(msg_size: usize, taken: Option<bool>) -> Connection {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 129 |     pub fn new_client_connection(msg_size: usize) -> Connection {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 143 |     pub fn await_client(&mut self, server: &TcpListener) {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/connection/peer.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl Peer {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 39 |     pub fn new(stream: TcpStream, who: String) -> Peer {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/server.rs:178:21
[INFO] [stderr]     |
[INFO] [stderr] 178 |                     &line.pop();
[INFO] [stderr]     |                     ^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 178 |                     let _ = &line.pop();
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/server.rs:195:21
[INFO] [stderr]     |
[INFO] [stderr] 195 |                     &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 195 |                     let _ = &line.push(char::from_u32(c as u32).unwrap());
[INFO] [stderr]     |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `r2wc` (bin "r2wc-client" test) generated 4 warnings
[INFO] [stderr] warning: `r2wc` (bin "r2wc-server" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[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/r2wc-30858c0bc88c6b01)
[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/client.rs (/opt/rustwide/target/debug/deps/r2wc_client-843e3ffd09cf5365)
[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/server.rs (/opt/rustwide/target/debug/deps/r2wc_server-c6dec2f3d1b340dd)
[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" "517870006d73b2ab288c0aa633651c62bbfab08c6fea9448c8ddf8efb8de90c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "517870006d73b2ab288c0aa633651c62bbfab08c6fea9448c8ddf8efb8de90c5", kill_on_drop: false }`
[INFO] [stdout] 517870006d73b2ab288c0aa633651c62bbfab08c6fea9448c8ddf8efb8de90c5
