[INFO] fetching crate iterx 0.0.10...
[INFO] checking iterx-0.0.10 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate iterx 0.0.10 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate iterx 0.0.10
[INFO] finished tweaking crates.io crate iterx 0.0.10
[INFO] tweaked toml for crates.io crate iterx 0.0.10 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate iterx 0.0.10 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac9a8c19b97b2234753390bc821fc8231350a68497729e6a7320313ebf0958fe
[INFO] running `Command { std: "docker" "start" "-a" "ac9a8c19b97b2234753390bc821fc8231350a68497729e6a7320313ebf0958fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac9a8c19b97b2234753390bc821fc8231350a68497729e6a7320313ebf0958fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac9a8c19b97b2234753390bc821fc8231350a68497729e6a7320313ebf0958fe", kill_on_drop: false }`
[INFO] [stdout] ac9a8c19b97b2234753390bc821fc8231350a68497729e6a7320313ebf0958fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d0d81d29959ecbecd7062aa028265bdd87fc0b799ff87cfdfbca003a4fd029b
[INFO] running `Command { std: "docker" "start" "-a" "5d0d81d29959ecbecd7062aa028265bdd87fc0b799ff87cfdfbca003a4fd029b", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking iterx v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:184:24
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct MarkLast<I>(bool, std::iter::Peekable<I>)
[INFO] [stdout]     |            --------    ^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 184 - pub struct MarkLast<I>(bool, std::iter::Peekable<I>)
[INFO] [stdout] 184 + pub struct MarkLast<I>((), std::iter::Peekable<I>)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:184:24
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct MarkLast<I>(bool, std::iter::Peekable<I>)
[INFO] [stdout]     |            --------    ^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 184 - pub struct MarkLast<I>(bool, std::iter::Peekable<I>)
[INFO] [stdout] 184 + pub struct MarkLast<I>((), std::iter::Peekable<I>)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "5d0d81d29959ecbecd7062aa028265bdd87fc0b799ff87cfdfbca003a4fd029b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0d81d29959ecbecd7062aa028265bdd87fc0b799ff87cfdfbca003a4fd029b", kill_on_drop: false }`
[INFO] [stdout] 5d0d81d29959ecbecd7062aa028265bdd87fc0b799ff87cfdfbca003a4fd029b