[INFO] fetching crate more-itertools 0.1.6...
[INFO] checking more-itertools-0.1.6 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate more-itertools 0.1.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate more-itertools 0.1.6
[INFO] finished tweaking crates.io crate more-itertools 0.1.6
[INFO] tweaked toml for crates.io crate more-itertools 0.1.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate more-itertools 0.1.6 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43596e965ea2d471a2e5d3d5eb50aa95c0b8a25610b9672c59b39f9f0257ab53
[INFO] running `Command { std: "docker" "start" "-a" "43596e965ea2d471a2e5d3d5eb50aa95c0b8a25610b9672c59b39f9f0257ab53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43596e965ea2d471a2e5d3d5eb50aa95c0b8a25610b9672c59b39f9f0257ab53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43596e965ea2d471a2e5d3d5eb50aa95c0b8a25610b9672c59b39f9f0257ab53", kill_on_drop: false }`
[INFO] [stdout] 43596e965ea2d471a2e5d3d5eb50aa95c0b8a25610b9672c59b39f9f0257ab53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 676d4defdbb56da66e4d2ce5a0c48a9b18b06c3a008a0a27f909e5bbedac3c78
[INFO] running `Command { std: "docker" "start" "-a" "676d4defdbb56da66e4d2ce5a0c48a9b18b06c3a008a0a27f909e5bbedac3c78", kill_on_drop: false }`
[INFO] [stderr]     Checking more-itertools v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sum`
[INFO] [stdout]   --> src/itertools/sum.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub(crate) use sum;
[INFO] [stdout]    |                ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout]  1 | #![warn(unused_imports)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `SlidingWindow` is never constructed
[INFO] [stdout]  --> src/windowing/sliding_window.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SlidingWindow<T>
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `more-itertools` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `SlidingWindow` is never constructed
[INFO] [stdout]  --> src/windowing/sliding_window.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SlidingWindow<T>
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `more-itertools` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "676d4defdbb56da66e4d2ce5a0c48a9b18b06c3a008a0a27f909e5bbedac3c78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676d4defdbb56da66e4d2ce5a0c48a9b18b06c3a008a0a27f909e5bbedac3c78", kill_on_drop: false }`
[INFO] [stdout] 676d4defdbb56da66e4d2ce5a0c48a9b18b06c3a008a0a27f909e5bbedac3c78
