[INFO] fetching crate libcgroup_rs 0.1.0...
[INFO] checking libcgroup_rs-0.1.0 against master#e4106065bf1bb515935d5d024e8d9c86454e2b22 for pr-112160
[INFO] extracting crate libcgroup_rs 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate libcgroup_rs 0.1.0 on toolchain e4106065bf1bb515935d5d024e8d9c86454e2b22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libcgroup_rs 0.1.0
[INFO] finished tweaking crates.io crate libcgroup_rs 0.1.0
[INFO] tweaked toml for crates.io crate libcgroup_rs 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2827af33d74d22f01a1744fd6e55b893afdb12d8862cd02badefe06008b2850f
[INFO] running `Command { std: "docker" "start" "-a" "2827af33d74d22f01a1744fd6e55b893afdb12d8862cd02badefe06008b2850f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2827af33d74d22f01a1744fd6e55b893afdb12d8862cd02badefe06008b2850f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2827af33d74d22f01a1744fd6e55b893afdb12d8862cd02badefe06008b2850f", kill_on_drop: false }`
[INFO] [stdout] 2827af33d74d22f01a1744fd6e55b893afdb12d8862cd02badefe06008b2850f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a449f291669f6ed494ead45bfbac7f9b0217c918385b2efc1a2d5eb0960b2d0f
[INFO] running `Command { std: "docker" "start" "-a" "a449f291669f6ed494ead45bfbac7f9b0217c918385b2efc1a2d5eb0960b2d0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.145
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling libcgroup_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name` and `c_groups` are never read
[INFO] [stdout]   --> src/manipulation.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct CGroupControllerBuilder{
[INFO] [stdout]    |            ----------------------- fields in this struct
[INFO] [stdout] 95 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 96 |     c_groups:*mut cgroup,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CGroupControllerBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `c_groups` are never read
[INFO] [stdout]   --> src/manipulation.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct CGroupControllerBuilder{
[INFO] [stdout]    |            ----------------------- fields in this struct
[INFO] [stdout] 95 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 96 |     c_groups:*mut cgroup,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CGroupControllerBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 1.25s
[INFO] running `Command { std: "docker" "inspect" "a449f291669f6ed494ead45bfbac7f9b0217c918385b2efc1a2d5eb0960b2d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a449f291669f6ed494ead45bfbac7f9b0217c918385b2efc1a2d5eb0960b2d0f", kill_on_drop: false }`
[INFO] [stdout] a449f291669f6ed494ead45bfbac7f9b0217c918385b2efc1a2d5eb0960b2d0f