[INFO] cloning repository https://github.com/farberbrodsky/message_protocol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/farberbrodsky/message_protocol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffarberbrodsky%2Fmessage_protocol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffarberbrodsky%2Fmessage_protocol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91473368dab97c26bb117d0385d5929c681c6460
[INFO] checking farberbrodsky/message_protocol against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffarberbrodsky%2Fmessage_protocol" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/farberbrodsky/message_protocol on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/farberbrodsky/message_protocol
[INFO] finished tweaking git repo https://github.com/farberbrodsky/message_protocol
[INFO] tweaked toml for git repo https://github.com/farberbrodsky/message_protocol written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/farberbrodsky/message_protocol already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0862b4ca7327a25fe28d91761b9cb2f34b3968725901ce06a53ed2eff08742a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0862b4ca7327a25fe28d91761b9cb2f34b3968725901ce06a53ed2eff08742a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0862b4ca7327a25fe28d91761b9cb2f34b3968725901ce06a53ed2eff08742a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0862b4ca7327a25fe28d91761b9cb2f34b3968725901ce06a53ed2eff08742a2", kill_on_drop: false }`
[INFO] [stdout] 0862b4ca7327a25fe28d91761b9cb2f34b3968725901ce06a53ed2eff08742a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62c1a52b111fa38ca2f395b2917b33b8e57eba7dfe86a0f48446ff78931001d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62c1a52b111fa38ca2f395b2917b33b8e57eba7dfe86a0f48446ff78931001d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking message_protocol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         self.write_tx.send(Ok(what));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         socket_2.write_all(&msg);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 | /             tx.send(ClientMessage {
[INFO] [stdout] 228 | |                 message: Message::Open,
[INFO] [stdout] 229 | |                 address: addr,
[INFO] [stdout] 230 | |                 write_tx: write_tx.clone(),
[INFO] [stdout] 231 | |             });
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 | /                     tx.send(ClientMessage {
[INFO] [stdout] 237 | |                         message: Message::Bytes(message),
[INFO] [stdout] 238 | |                         address: addr,
[INFO] [stdout] 239 | |                         write_tx: write_tx2.clone(),
[INFO] [stdout] 240 | |                     });
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:242:17
[INFO] [stdout]     |
[INFO] [stdout] 242 | /                 tx.send(ClientMessage {
[INFO] [stdout] 243 | |                     message: Message::Close,
[INFO] [stdout] 244 | |                     address: addr,
[INFO] [stdout] 245 | |                     write_tx: write_tx2.clone(),
[INFO] [stdout] 246 | |                 });
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     tx.send(Message::Open);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:292:13
[INFO] [stdout]     |
[INFO] [stdout] 292 |             tx.send(Message::Bytes(message));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:294:9
[INFO] [stdout]     |
[INFO] [stdout] 294 |         tx.send(Message::Close);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |         self.write_tx.send(Ok(what));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                         socket_2.write_all(&msg);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 | /             tx.send(ClientMessage {
[INFO] [stdout] 228 | |                 message: Message::Open,
[INFO] [stdout] 229 | |                 address: addr,
[INFO] [stdout] 230 | |                 write_tx: write_tx.clone(),
[INFO] [stdout] 231 | |             });
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 | /                     tx.send(ClientMessage {
[INFO] [stdout] 237 | |                         message: Message::Bytes(message),
[INFO] [stdout] 238 | |                         address: addr,
[INFO] [stdout] 239 | |                         write_tx: write_tx2.clone(),
[INFO] [stdout] 240 | |                     });
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:242:17
[INFO] [stdout]     |
[INFO] [stdout] 242 | /                 tx.send(ClientMessage {
[INFO] [stdout] 243 | |                     message: Message::Close,
[INFO] [stdout] 244 | |                     address: addr,
[INFO] [stdout] 245 | |                     write_tx: write_tx2.clone(),
[INFO] [stdout] 246 | |                 });
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:287:5
[INFO] [stdout]     |
[INFO] [stdout] 287 |     tx.send(Message::Open);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:292:13
[INFO] [stdout]     |
[INFO] [stdout] 292 |             tx.send(Message::Bytes(message));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:294:9
[INFO] [stdout]     |
[INFO] [stdout] 294 |         tx.send(Message::Close);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "62c1a52b111fa38ca2f395b2917b33b8e57eba7dfe86a0f48446ff78931001d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c1a52b111fa38ca2f395b2917b33b8e57eba7dfe86a0f48446ff78931001d0", kill_on_drop: false }`
[INFO] [stdout] 62c1a52b111fa38ca2f395b2917b33b8e57eba7dfe86a0f48446ff78931001d0