[INFO] cloning repository https://github.com/lywich/Distributed_TCP_Server_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lywich/Distributed_TCP_Server_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flywich%2FDistributed_TCP_Server_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flywich%2FDistributed_TCP_Server_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4cfdd66d3d2b4525d15d8a7d44893e79671a98dc
[INFO] testing lywich/Distributed_TCP_Server_Rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flywich%2FDistributed_TCP_Server_Rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lywich/Distributed_TCP_Server_Rust
[INFO] finished tweaking git repo https://github.com/lywich/Distributed_TCP_Server_Rust
[INFO] tweaked toml for git repo https://github.com/lywich/Distributed_TCP_Server_Rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lywich/Distributed_TCP_Server_Rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lywich/Distributed_TCP_Server_Rust 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4fe9e6f28cbf5f95284c87bb64b0ad6e684b40000689f7af01278ca5d6c981b
[INFO] running `Command { std: "docker" "start" "-a" "c4fe9e6f28cbf5f95284c87bb64b0ad6e684b40000689f7af01278ca5d6c981b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4fe9e6f28cbf5f95284c87bb64b0ad6e684b40000689f7af01278ca5d6c981b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4fe9e6f28cbf5f95284c87bb64b0ad6e684b40000689f7af01278ca5d6c981b", kill_on_drop: false }`
[INFO] [stdout] c4fe9e6f28cbf5f95284c87bb64b0ad6e684b40000689f7af01278ca5d6c981b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9879f7c8dd3454b2accaa914fadad3753f4c2cab8135de66ecaec8de53d6789d
[INFO] running `Command { std: "docker" "start" "-a" "9879f7c8dd3454b2accaa914fadad3753f4c2cab8135de66ecaec8de53d6789d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[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]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling tokio v1.36.0
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.53s
[INFO] running `Command { std: "docker" "inspect" "9879f7c8dd3454b2accaa914fadad3753f4c2cab8135de66ecaec8de53d6789d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9879f7c8dd3454b2accaa914fadad3753f4c2cab8135de66ecaec8de53d6789d", kill_on_drop: false }`
[INFO] [stdout] 9879f7c8dd3454b2accaa914fadad3753f4c2cab8135de66ecaec8de53d6789d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0859724e26a64d7ef22a3551064d92802921c61edee2b2cd47cf62af0c3321cc
[INFO] running `Command { std: "docker" "start" "-a" "0859724e26a64d7ef22a3551064d92802921c61edee2b2cd47cf62af0c3321cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "0859724e26a64d7ef22a3551064d92802921c61edee2b2cd47cf62af0c3321cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0859724e26a64d7ef22a3551064d92802921c61edee2b2cd47cf62af0c3321cc", kill_on_drop: false }`
[INFO] [stdout] 0859724e26a64d7ef22a3551064d92802921c61edee2b2cd47cf62af0c3321cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d9f2fa576f3b3e4be37eb4cac59b7c0e8370db353f6dc5d8f9c8aa80955feaf2
[INFO] running `Command { std: "docker" "start" "-a" "d9f2fa576f3b3e4be37eb4cac59b7c0e8370db353f6dc5d8f9c8aa80955feaf2", kill_on_drop: false }`
[INFO] [stderr] warning: associated constant `DATA_LIMIT` is never used
[INFO] [stderr]   --> src/task.rs:44:11
[INFO] [stderr]    |
[INFO] [stderr] 25 | impl Task {
[INFO] [stderr]    | --------- associated constant in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 44 |     const DATA_LIMIT: u64 = u8::MAX as u64;
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cs3211_assignment_3` (bin "cs3211_assignment_3" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cs3211_assignment_3-67f92a1e4416cce1)
[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" "d9f2fa576f3b3e4be37eb4cac59b7c0e8370db353f6dc5d8f9c8aa80955feaf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9f2fa576f3b3e4be37eb4cac59b7c0e8370db353f6dc5d8f9c8aa80955feaf2", kill_on_drop: false }`
[INFO] [stdout] d9f2fa576f3b3e4be37eb4cac59b7c0e8370db353f6dc5d8f9c8aa80955feaf2