[INFO] fetching crate pidfd 0.2.4...
[INFO] checking pidfd-0.2.4 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate pidfd 0.2.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate pidfd 0.2.4 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pidfd 0.2.4
[INFO] finished tweaking crates.io crate pidfd 0.2.4
[INFO] tweaked toml for crates.io crate pidfd 0.2.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate pidfd 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 36fc889e0bd588cb65c7a0ca60316ef5b69f6c81bd4e3b912564a00e92ab058d
[INFO] running `Command { std: "docker" "start" "-a" "36fc889e0bd588cb65c7a0ca60316ef5b69f6c81bd4e3b912564a00e92ab058d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36fc889e0bd588cb65c7a0ca60316ef5b69f6c81bd4e3b912564a00e92ab058d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36fc889e0bd588cb65c7a0ca60316ef5b69f6c81bd4e3b912564a00e92ab058d", kill_on_drop: false }`
[INFO] [stdout] 36fc889e0bd588cb65c7a0ca60316ef5b69f6c81bd4e3b912564a00e92ab058d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] add66fc4afb9023a974e19b9dd967a1ffbcfe646102dc6a4a2ea0b8bfb93f308
[INFO] running `Command { std: "docker" "start" "-a" "add66fc4afb9023a974e19b9dd967a1ffbcfe646102dc6a4a2ea0b8bfb93f308", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking fd-reactor v0.1.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking pidfd v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Mutex`, `Waker`, `mem::MaybeUninit`, `mpsc`, `time::Duration`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     mem::MaybeUninit,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |         mpsc, Arc, Mutex,
[INFO] [stdout]    |         ^^^^       ^^^^^
[INFO] [stdout] 20 |     },
[INFO] [stdout] 21 |     task::{Context, Poll, Waker},
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout] 22 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `P_PIDFD`
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | const P_PIDFD: libc::idtype_t = 3;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stdout] warning: unused imports: `Mutex`, `Waker`, `mem::MaybeUninit`, `mpsc`, `time::Duration`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     mem::MaybeUninit,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |         mpsc, Arc, Mutex,
[INFO] [stdout]    |         ^^^^       ^^^^^
[INFO] [stdout] 20 |     },
[INFO] [stdout] 21 |     task::{Context, Poll, Waker},
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout] 22 |     time::Duration,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `P_PIDFD`
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | const P_PIDFD: libc::idtype_t = 3;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.44s
[INFO] running `Command { std: "docker" "inspect" "add66fc4afb9023a974e19b9dd967a1ffbcfe646102dc6a4a2ea0b8bfb93f308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "add66fc4afb9023a974e19b9dd967a1ffbcfe646102dc6a4a2ea0b8bfb93f308", kill_on_drop: false }`
[INFO] [stdout] add66fc4afb9023a974e19b9dd967a1ffbcfe646102dc6a4a2ea0b8bfb93f308