[INFO] fetching crate leonardo-heap 0.3.0...
[INFO] checking leonardo-heap-0.3.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate leonardo-heap 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate leonardo-heap 0.3.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate leonardo-heap 0.3.0
[INFO] finished tweaking crates.io crate leonardo-heap 0.3.0
[INFO] tweaked toml for crates.io crate leonardo-heap 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d1c30de9da15e543687a28a2b37a14921e11e0dad6b46df7b702a26e407b27e
[INFO] running `Command { std: "docker" "start" "-a" "4d1c30de9da15e543687a28a2b37a14921e11e0dad6b46df7b702a26e407b27e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d1c30de9da15e543687a28a2b37a14921e11e0dad6b46df7b702a26e407b27e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d1c30de9da15e543687a28a2b37a14921e11e0dad6b46df7b702a26e407b27e", kill_on_drop: false }`
[INFO] [stdout] 4d1c30de9da15e543687a28a2b37a14921e11e0dad6b46df7b702a26e407b27e
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08d07e5d943ecef8980f4eb3a05d6eeebed4b502d538c3e8a6f73dc14b4bd3d5
[INFO] running `Command { std: "docker" "start" "-a" "08d07e5d943ecef8980f4eb3a05d6eeebed4b502d538c3e8a6f73dc14b4bd3d5", kill_on_drop: false }`
[INFO] [stderr]     Checking leonardo-heap v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stdout] warning: function is never used: `leonardo_closed`
[INFO] [stdout]   --> src/leonardo.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn leonardo_closed(order: u32) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `leonardo_naive`
[INFO] [stdout]   --> src/leonardo.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn leonardo_naive(order: u32) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_from_len`
[INFO] [stdout]   --> src/layout.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn new_from_len(size: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "08d07e5d943ecef8980f4eb3a05d6eeebed4b502d538c3e8a6f73dc14b4bd3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d07e5d943ecef8980f4eb3a05d6eeebed4b502d538c3e8a6f73dc14b4bd3d5", kill_on_drop: false }`
[INFO] [stdout] 08d07e5d943ecef8980f4eb3a05d6eeebed4b502d538c3e8a6f73dc14b4bd3d5