[INFO] fetching crate coca 0.2.0...
[INFO] checking coca-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate coca 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate coca 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate coca 0.2.0
[INFO] finished tweaking crates.io crate coca 0.2.0
[INFO] tweaked toml for crates.io crate coca 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate coca 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8231e05fd864c0f126e34b8ef5a29876dbe4bbab196180eef0b9a9966efd33b1
[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" "8231e05fd864c0f126e34b8ef5a29876dbe4bbab196180eef0b9a9966efd33b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8231e05fd864c0f126e34b8ef5a29876dbe4bbab196180eef0b9a9966efd33b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8231e05fd864c0f126e34b8ef5a29876dbe4bbab196180eef0b9a9966efd33b1", kill_on_drop: false }`
[INFO] [stdout] 8231e05fd864c0f126e34b8ef5a29876dbe4bbab196180eef0b9a9966efd33b1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfef1c3df258c7b715842478ec95694c3e858defc6a0f4da33faafcd7cb50864
[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" "dfef1c3df258c7b715842478ec95694c3e858defc6a0f4da33faafcd7cb50864", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking coca v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> examples/icosphere.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 79 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]     --> src/arena.rs:1314:13
[INFO] [stdout]      |
[INFO] [stdout] 1314 |             val: i64,
[INFO] [stdout]      |             ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]     --> src/arena.rs:1315:13
[INFO] [stdout]      |
[INFO] [stdout] 1315 |             next: Option<Box<'a, LinkedList<'a>>>,
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]     --> src/deque.rs:2179:13
[INFO] [stdout]      |
[INFO] [stdout] 2179 |             value: usize,
[INFO] [stdout]      |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "dfef1c3df258c7b715842478ec95694c3e858defc6a0f4da33faafcd7cb50864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfef1c3df258c7b715842478ec95694c3e858defc6a0f4da33faafcd7cb50864", kill_on_drop: false }`
[INFO] [stdout] dfef1c3df258c7b715842478ec95694c3e858defc6a0f4da33faafcd7cb50864