[INFO] fetching crate splay_tree 0.2.10...
[INFO] checking splay_tree-0.2.10 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate splay_tree 0.2.10 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate splay_tree 0.2.10 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate splay_tree 0.2.10
[INFO] finished tweaking crates.io crate splay_tree 0.2.10
[INFO] tweaked toml for crates.io crate splay_tree 0.2.10 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 725eca4c345d2c9383d685347c9a3e68f69504a435eb5fd9e08d2d42986271b3
[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" "725eca4c345d2c9383d685347c9a3e68f69504a435eb5fd9e08d2d42986271b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "725eca4c345d2c9383d685347c9a3e68f69504a435eb5fd9e08d2d42986271b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725eca4c345d2c9383d685347c9a3e68f69504a435eb5fd9e08d2d42986271b3", kill_on_drop: false }`
[INFO] [stdout] 725eca4c345d2c9383d685347c9a3e68f69504a435eb5fd9e08d2d42986271b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] 0847d8c140a294124895564d0e1a6cc76caed7262e3d748470e9896b8f42cab1
[INFO] running `Command { std: "docker" "start" "-a" "0847d8c140a294124895564d0e1a6cc76caed7262e3d748470e9896b8f42cab1", kill_on_drop: false }`
[INFO] [stderr]     Checking splay_tree v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stdout] warning: function is never used: `get_middle_splay`
[INFO] [stdout]   --> benches/bench.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn get_middle_splay(b: &mut test::Bencher, num: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[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 3.69s
[INFO] running `Command { std: "docker" "inspect" "0847d8c140a294124895564d0e1a6cc76caed7262e3d748470e9896b8f42cab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0847d8c140a294124895564d0e1a6cc76caed7262e3d748470e9896b8f42cab1", kill_on_drop: false }`
[INFO] [stdout] 0847d8c140a294124895564d0e1a6cc76caed7262e3d748470e9896b8f42cab1