[INFO] fetching crate type-onion 0.3.0...
[INFO] checking type-onion-0.3.0 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate type-onion 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate type-onion 0.3.0
[INFO] finished tweaking crates.io crate type-onion 0.3.0
[INFO] tweaked toml for crates.io crate type-onion 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate type-onion 0.3.0 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate type-onion 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be834bce4bcab10d099f0d5c8683e325cde903125b81948af4587bf75830f0dc
[INFO] running `Command { std: "docker" "start" "-a" "be834bce4bcab10d099f0d5c8683e325cde903125b81948af4587bf75830f0dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be834bce4bcab10d099f0d5c8683e325cde903125b81948af4587bf75830f0dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be834bce4bcab10d099f0d5c8683e325cde903125b81948af4587bf75830f0dc", kill_on_drop: false }`
[INFO] [stdout] be834bce4bcab10d099f0d5c8683e325cde903125b81948af4587bf75830f0dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2eeefd71d3291739f603c6477dc5e97a93aceb4b2463648fab50a16ec106b67e
[INFO] running `Command { std: "docker" "start" "-a" "2eeefd71d3291739f603c6477dc5e97a93aceb4b2463648fab50a16ec106b67e", kill_on_drop: false }`
[INFO] [stderr]     Checking type-onion v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .find(|(i, x)| **x == b)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 .filter(|(i, a)| !pos2s.contains(&i))
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .find(|(i, x)| **x == b)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 .filter(|(i, a)| !pos2s.contains(&i))
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "2eeefd71d3291739f603c6477dc5e97a93aceb4b2463648fab50a16ec106b67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eeefd71d3291739f603c6477dc5e97a93aceb4b2463648fab50a16ec106b67e", kill_on_drop: false }`
[INFO] [stdout] 2eeefd71d3291739f603c6477dc5e97a93aceb4b2463648fab50a16ec106b67e