[INFO] cloning repository https://github.com/Sonahit/rust-mem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sonahit/rust-mem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 246f1827c7555bf75169f202308a21baf3acf620
[INFO] checking Sonahit/rust-mem against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonahit%2Frust-mem" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sonahit/rust-mem on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sonahit/rust-mem
[INFO] finished tweaking git repo https://github.com/Sonahit/rust-mem
[INFO] tweaked toml for git repo https://github.com/Sonahit/rust-mem written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Sonahit/rust-mem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Sonahit/rust-hook`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40af5c3c6eb6403148103e1f2e7d08a81baf117474c815f17f0a0579e786609a
[INFO] running `Command { std: "docker" "start" "-a" "40af5c3c6eb6403148103e1f2e7d08a81baf117474c815f17f0a0579e786609a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40af5c3c6eb6403148103e1f2e7d08a81baf117474c815f17f0a0579e786609a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40af5c3c6eb6403148103e1f2e7d08a81baf117474c815f17f0a0579e786609a", kill_on_drop: false }`
[INFO] [stdout] 40af5c3c6eb6403148103e1f2e7d08a81baf117474c815f17f0a0579e786609a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c26b6696d9c27e4a55706ba0ac0af8eabbfee17a2a87c2923cbdb8127286a78
[INFO] running `Command { std: "docker" "start" "-a" "6c26b6696d9c27e4a55706ba0ac0af8eabbfee17a2a87c2923cbdb8127286a78", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking hook_protocol v0.1.0 (https://github.com/Sonahit/rust-hook#db05feeb)
[INFO] [stderr]     Checking mem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `read_file_concurrent`
[INFO] [stdout]  --> src/read_file.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_file_concurrent(filename: &str) -> Result<Vec<u8>, std::io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drain_reader`
[INFO] [stdout]   --> src/read_file.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn drain_reader(reader: &mut BufReader<File>, sender: Sender<u8>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_file_concurrent`
[INFO] [stdout]  --> src/read_file.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_file_concurrent(filename: &str) -> Result<Vec<u8>, std::io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drain_reader`
[INFO] [stdout]   --> src/read_file.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn drain_reader(reader: &mut BufReader<File>, sender: Sender<u8>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.34s
[INFO] running `Command { std: "docker" "inspect" "6c26b6696d9c27e4a55706ba0ac0af8eabbfee17a2a87c2923cbdb8127286a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c26b6696d9c27e4a55706ba0ac0af8eabbfee17a2a87c2923cbdb8127286a78", kill_on_drop: false }`
[INFO] [stdout] 6c26b6696d9c27e4a55706ba0ac0af8eabbfee17a2a87c2923cbdb8127286a78