[INFO] cloning repository https://github.com/hnnazm/rust-socket
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hnnazm/rust-socket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnnazm%2Frust-socket", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnnazm%2Frust-socket'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf3f085ff0fba7cc864c5714fbc4b8fa57ec8bfa
[INFO] checking hnnazm/rust-socket against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhnnazm%2Frust-socket" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hnnazm/rust-socket on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hnnazm/rust-socket
[INFO] finished tweaking git repo https://github.com/hnnazm/rust-socket
[INFO] tweaked toml for git repo https://github.com/hnnazm/rust-socket written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hnnazm/rust-socket already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c039c2fc5956530d756322ddab5f427b5f51d48d8890110eb596018acc74c63d
[INFO] running `Command { std: "docker" "start" "-a" "c039c2fc5956530d756322ddab5f427b5f51d48d8890110eb596018acc74c63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c039c2fc5956530d756322ddab5f427b5f51d48d8890110eb596018acc74c63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c039c2fc5956530d756322ddab5f427b5f51d48d8890110eb596018acc74c63d", kill_on_drop: false }`
[INFO] [stdout] c039c2fc5956530d756322ddab5f427b5f51d48d8890110eb596018acc74c63d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3443e11cbd16c0fd0c61c72616066d952f13b20463a8cf83bcc9e032a5394db6
[INFO] running `Command { std: "docker" "start" "-a" "3443e11cbd16c0fd0c61c72616066d952f13b20463a8cf83bcc9e032a5394db6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-socket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/server/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Bytes, Read, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Bytes`, `Read`
[INFO] [stdout]  --> src/client/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Bytes, Read, Write};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server/main.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Ok(mut stream) => {
[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: unused import: `Bytes`
[INFO] [stdout]  --> src/server/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Bytes, Read, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server/main.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Ok(mut stream) => {
[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: unused imports: `Bytes`, `Read`
[INFO] [stdout]  --> src/client/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Bytes, Read, Write};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3443e11cbd16c0fd0c61c72616066d952f13b20463a8cf83bcc9e032a5394db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3443e11cbd16c0fd0c61c72616066d952f13b20463a8cf83bcc9e032a5394db6", kill_on_drop: false }`
[INFO] [stdout] 3443e11cbd16c0fd0c61c72616066d952f13b20463a8cf83bcc9e032a5394db6