[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] testing jmcelwain/the_linux_programming_interface against 1.49.0 for beta-1.50-1
[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 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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" "+1.49.0" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] 4026d75720b79b25a22391d9b4cba535292ed96dbc6a154b861c6ef734761286
[INFO] running `Command { std: "docker" "start" "-a" "4026d75720b79b25a22391d9b4cba535292ed96dbc6a154b861c6ef734761286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4026d75720b79b25a22391d9b4cba535292ed96dbc6a154b861c6ef734761286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4026d75720b79b25a22391d9b4cba535292ed96dbc6a154b861c6ef734761286", kill_on_drop: false }`
[INFO] [stdout] 4026d75720b79b25a22391d9b4cba535292ed96dbc6a154b861c6ef734761286
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76bfab8ef1a7ff28632e82862638a77f37bceec185ddc59ccc92530bdf9080dd
[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" "76bfab8ef1a7ff28632e82862638a77f37bceec185ddc59ccc92530bdf9080dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "76bfab8ef1a7ff28632e82862638a77f37bceec185ddc59ccc92530bdf9080dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76bfab8ef1a7ff28632e82862638a77f37bceec185ddc59ccc92530bdf9080dd", kill_on_drop: false }`
[INFO] [stdout] 76bfab8ef1a7ff28632e82862638a77f37bceec185ddc59ccc92530bdf9080dd
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0a25cf8ee34e9710cde2352cbada2cb631b990d8bea802bb441090b03019f17
[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" "c0a25cf8ee34e9710cde2352cbada2cb631b990d8bea802bb441090b03019f17", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "c0a25cf8ee34e9710cde2352cbada2cb631b990d8bea802bb441090b03019f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0a25cf8ee34e9710cde2352cbada2cb631b990d8bea802bb441090b03019f17", kill_on_drop: false }`
[INFO] [stdout] c0a25cf8ee34e9710cde2352cbada2cb631b990d8bea802bb441090b03019f17
[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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 376f236823831f6b60348ff99020f981a0f3f2c6027a3d8f92610fcf7291c3f5
[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" "376f236823831f6b60348ff99020f981a0f3f2c6027a3d8f92610fcf7291c3f5", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `to_path`
[INFO] [stderr]  --> src/fileio/copy.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let to_path = Path::new(to);
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]  --> src/fileio/copy.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let file = match File::open(&from) {
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `copy`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/fileio/copy.rs:4:8
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 4 | pub fn copy(from: &String, to: &String) {
[INFO] [stdout] 
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/linux_interface-e16fcbac098184bf
[INFO] running `Command { std: "docker" "inspect" "376f236823831f6b60348ff99020f981a0f3f2c6027a3d8f92610fcf7291c3f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "376f236823831f6b60348ff99020f981a0f3f2c6027a3d8f92610fcf7291c3f5", kill_on_drop: false }`
[INFO] [stdout] 376f236823831f6b60348ff99020f981a0f3f2c6027a3d8f92610fcf7291c3f5