[INFO] cloning repository https://github.com/jmcelwain/the_linux_programming_interface [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmcelwain/the_linux_programming_interface" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcelwain%2Fthe_linux_programming_interface", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcelwain%2Fthe_linux_programming_interface'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20d87244e4a21b0c11f1818de6e85d89b1648b19 [INFO] checking jmcelwain/the_linux_programming_interface against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmcelwain%2Fthe_linux_programming_interface" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jmcelwain/the_linux_programming_interface on toolchain 4a04890980766cc79878135f5ade8c0c4321e943 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jmcelwain/the_linux_programming_interface [INFO] finished tweaking git repo https://github.com/jmcelwain/the_linux_programming_interface [INFO] tweaked toml for git repo https://github.com/jmcelwain/the_linux_programming_interface written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/jmcelwain/the_linux_programming_interface already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a875c72682d8ee651470028a034e17a4c327050e2d9405b13a8506d6edfd51e9 [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" "a875c72682d8ee651470028a034e17a4c327050e2d9405b13a8506d6edfd51e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a875c72682d8ee651470028a034e17a4c327050e2d9405b13a8506d6edfd51e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a875c72682d8ee651470028a034e17a4c327050e2d9405b13a8506d6edfd51e9", kill_on_drop: false }` [INFO] [stdout] a875c72682d8ee651470028a034e17a4c327050e2d9405b13a8506d6edfd51e9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 04d34c3ee5f2b12de5c30c6b6ba52c91a6fb3d57628701e5e999a888a19f175e [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" "04d34c3ee5f2b12de5c30c6b6ba52c91a6fb3d57628701e5e999a888a19f175e", kill_on_drop: false }` [INFO] [stderr] Checking linux_interface v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `to_path` [INFO] [stdout] --> src/fileio/copy.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let to_path = Path::new(to); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_path` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `file` [INFO] [stdout] --> src/fileio/copy.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let file = match File::open(&from) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `copy` [INFO] [stdout] --> src/fileio/copy.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn copy(from: &String, to: &String) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `to_path` [INFO] [stdout] --> src/fileio/copy.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let to_path = Path::new(to); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_path` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `file` [INFO] [stdout] --> src/fileio/copy.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let file = match File::open(&from) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `copy` [INFO] [stdout] --> src/fileio/copy.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn copy(from: &String, to: &String) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.52s [INFO] running `Command { std: "docker" "inspect" "04d34c3ee5f2b12de5c30c6b6ba52c91a6fb3d57628701e5e999a888a19f175e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04d34c3ee5f2b12de5c30c6b6ba52c91a6fb3d57628701e5e999a888a19f175e", kill_on_drop: false }` [INFO] [stdout] 04d34c3ee5f2b12de5c30c6b6ba52c91a6fb3d57628701e5e999a888a19f175e