[INFO] cloning repository https://github.com/aliaksandr-master/rust-tcp-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aliaksandr-master/rust-tcp-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faliaksandr-master%2Frust-tcp-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faliaksandr-master%2Frust-tcp-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3affe2203c9fa6e5a2d1860edd0b6f4f97bc5ceb
[INFO] checking aliaksandr-master/rust-tcp-bench against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faliaksandr-master%2Frust-tcp-bench" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aliaksandr-master/rust-tcp-bench on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aliaksandr-master/rust-tcp-bench
[INFO] finished tweaking git repo https://github.com/aliaksandr-master/rust-tcp-bench
[INFO] tweaked toml for git repo https://github.com/aliaksandr-master/rust-tcp-bench written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/aliaksandr-master/rust-tcp-bench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.1.15
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded itertools v0.9.0
[INFO] [stderr]   Downloaded bytes v0.5.6
[INFO] [stderr]   Downloaded hdrhist v0.5.0
[INFO] [stderr]   Downloaded tokio v0.2.20
[INFO] [stderr]   Downloaded mio v0.7.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded ntapi v0.3.4
[INFO] [stderr]   Downloaded libc v0.2.72
[INFO] [stderr]   Downloaded syn v1.0.34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb12bf0a32adc6425d7639cf9703c9c090e52ff3c0458e6704c469adc43d9e94
[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" "fb12bf0a32adc6425d7639cf9703c9c090e52ff3c0458e6704c469adc43d9e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb12bf0a32adc6425d7639cf9703c9c090e52ff3c0458e6704c469adc43d9e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb12bf0a32adc6425d7639cf9703c9c090e52ff3c0458e6704c469adc43d9e94", kill_on_drop: false }`
[INFO] [stdout] fb12bf0a32adc6425d7639cf9703c9c090e52ff3c0458e6704c469adc43d9e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b0635c33928cf6abf41e545c0cad94a7c74a2c42cf32e29e3872613fabc8494d
[INFO] running `Command { std: "docker" "start" "-a" "b0635c33928cf6abf41e545c0cad94a7c74a2c42cf32e29e3872613fabc8494d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking hdrhist v0.5.0
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking rust-tcp-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bytes::BytesMut`
[INFO] [stdout]  --> src/tcp_server/tcp_server_tokio.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::BytesMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bytes::BytesMut`
[INFO] [stdout]  --> src/tcp_server/tcp_server_tokio.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::BytesMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.17s
[INFO] running `Command { std: "docker" "inspect" "b0635c33928cf6abf41e545c0cad94a7c74a2c42cf32e29e3872613fabc8494d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0635c33928cf6abf41e545c0cad94a7c74a2c42cf32e29e3872613fabc8494d", kill_on_drop: false }`
[INFO] [stdout] b0635c33928cf6abf41e545c0cad94a7c74a2c42cf32e29e3872613fabc8494d