[INFO] cloning repository https://github.com/lipwei1808/concurrent-tcp-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lipwei1808/concurrent-tcp-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flipwei1808%2Fconcurrent-tcp-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flipwei1808%2Fconcurrent-tcp-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c104ab09b1f086908cf31790cc6063466fc0b87
[INFO] checking lipwei1808/concurrent-tcp-server against try#a0cd57eba5d417638d3351ba13fc414ad1a24bec for pr-134688-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flipwei1808%2Fconcurrent-tcp-server" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lipwei1808/concurrent-tcp-server on toolchain a0cd57eba5d417638d3351ba13fc414ad1a24bec
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lipwei1808/concurrent-tcp-server
[INFO] finished tweaking git repo https://github.com/lipwei1808/concurrent-tcp-server
[INFO] tweaked toml for git repo https://github.com/lipwei1808/concurrent-tcp-server written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lipwei1808/concurrent-tcp-server 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" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 168e445d0dd9cc0b3129da3d67601c59e6c08b4c873bc5361e6d5032c93534f4
[INFO] running `Command { std: "docker" "start" "-a" "168e445d0dd9cc0b3129da3d67601c59e6c08b4c873bc5361e6d5032c93534f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "168e445d0dd9cc0b3129da3d67601c59e6c08b4c873bc5361e6d5032c93534f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "168e445d0dd9cc0b3129da3d67601c59e6c08b4c873bc5361e6d5032c93534f4", kill_on_drop: false }`
[INFO] [stdout] 168e445d0dd9cc0b3129da3d67601c59e6c08b4c873bc5361e6d5032c93534f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1269a19998b8d06eff5b28b676facca8428b008b3cc59d8baa80bc4b56a2554f
[INFO] running `Command { std: "docker" "start" "-a" "1269a19998b8d06eff5b28b676facca8428b008b3cc59d8baa80bc4b56a2554f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking cs3211_assignment_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated constant `DATA_LIMIT` is never used
[INFO] [stdout]   --> src/task.rs:44:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Task {
[INFO] [stdout]    | --------- associated constant in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     const DATA_LIMIT: u64 = u8::MAX as u64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant `DATA_LIMIT` is never used
[INFO] [stdout]   --> src/task.rs:44:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Task {
[INFO] [stdout]    | --------- associated constant in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     const DATA_LIMIT: u64 = u8::MAX as u64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.95s
[INFO] running `Command { std: "docker" "inspect" "1269a19998b8d06eff5b28b676facca8428b008b3cc59d8baa80bc4b56a2554f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1269a19998b8d06eff5b28b676facca8428b008b3cc59d8baa80bc4b56a2554f", kill_on_drop: false }`
[INFO] [stdout] 1269a19998b8d06eff5b28b676facca8428b008b3cc59d8baa80bc4b56a2554f