[INFO] fetching crate zio-sendfile 0.2.0...
[INFO] checking zio-sendfile-0.2.0 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] extracting crate zio-sendfile 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate zio-sendfile 0.2.0 on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zio-sendfile 0.2.0
[INFO] finished tweaking crates.io crate zio-sendfile 0.2.0
[INFO] tweaked toml for crates.io crate zio-sendfile 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "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] 0805db5890ec5aaeaf9c6bca7903fbb63e41604df22e1d99c1cddc38c6c3c0fb
[INFO] running `Command { std: "docker" "start" "-a" "0805db5890ec5aaeaf9c6bca7903fbb63e41604df22e1d99c1cddc38c6c3c0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0805db5890ec5aaeaf9c6bca7903fbb63e41604df22e1d99c1cddc38c6c3c0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0805db5890ec5aaeaf9c6bca7903fbb63e41604df22e1d99c1cddc38c6c3c0fb", kill_on_drop: false }`
[INFO] [stdout] 0805db5890ec5aaeaf9c6bca7903fbb63e41604df22e1d99c1cddc38c6c3c0fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "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] f152b355407832617093697308316dde2ea71cd4f233293f23fe7efd8903bcbc
[INFO] running `Command { std: "docker" "start" "-a" "f152b355407832617093697308316dde2ea71cd4f233293f23fe7efd8903bcbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking zio-sendfile v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `wrote`
[INFO] [stdout]   --> examples/cp.rs:31:14
[INFO] [stdout]    |
[INFO] [stdout] 31 |         |sf, wrote| {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_wrote`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "f152b355407832617093697308316dde2ea71cd4f233293f23fe7efd8903bcbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f152b355407832617093697308316dde2ea71cd4f233293f23fe7efd8903bcbc", kill_on_drop: false }`
[INFO] [stdout] f152b355407832617093697308316dde2ea71cd4f233293f23fe7efd8903bcbc