[INFO] fetching crate neal 0.1.0-alpha.1...
[INFO] checking neal-0.1.0-alpha.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate neal 0.1.0-alpha.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate neal 0.1.0-alpha.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate neal 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate neal 0.1.0-alpha.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate neal 0.1.0-alpha.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate neal 0.1.0-alpha.1 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73686368092fe39c4576c7e2513915615ce0fdf3306ca1185f054249cd649c5a
[INFO] running `Command { std: "docker" "start" "-a" "73686368092fe39c4576c7e2513915615ce0fdf3306ca1185f054249cd649c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73686368092fe39c4576c7e2513915615ce0fdf3306ca1185f054249cd649c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73686368092fe39c4576c7e2513915615ce0fdf3306ca1185f054249cd649c5a", kill_on_drop: false }`
[INFO] [stdout] 73686368092fe39c4576c7e2513915615ce0fdf3306ca1185f054249cd649c5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29da338bba33234aaa499b538c81d7292ca2318d3e432a7df9ce2a7d5d700ffe
[INFO] running `Command { std: "docker" "start" "-a" "29da338bba33234aaa499b538c81d7292ca2318d3e432a7df9ce2a7d5d700ffe", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking neal v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `node_id`
[INFO] [stdout]    --> examples/basic_equation.rs:102:47
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn on_node_computation_started(&mut self, node_id: NodeId) {}
[INFO] [stdout]     |                                               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_id`
[INFO] [stdout]    --> examples/basic_equation.rs:104:48
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn on_node_computation_finished(&mut self, node_id: NodeId, success: bool) {}
[INFO] [stdout]     |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `success`
[INFO] [stdout]    --> examples/basic_equation.rs:104:65
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn on_node_computation_finished(&mut self, node_id: NodeId, success: bool) {}
[INFO] [stdout]     |                                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_success`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_id`
[INFO] [stdout]   --> examples/simple-observer.rs:64:48
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn on_node_computation_finished(&mut self, node_id: NodeId, success: bool) {}
[INFO] [stdout]    |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `success`
[INFO] [stdout]   --> examples/simple-observer.rs:64:65
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn on_node_computation_finished(&mut self, node_id: NodeId, success: bool) {}
[INFO] [stdout]    |                                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_success`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.39s
[INFO] running `Command { std: "docker" "inspect" "29da338bba33234aaa499b538c81d7292ca2318d3e432a7df9ce2a7d5d700ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29da338bba33234aaa499b538c81d7292ca2318d3e432a7df9ce2a7d5d700ffe", kill_on_drop: false }`
[INFO] [stdout] 29da338bba33234aaa499b538c81d7292ca2318d3e432a7df9ce2a7d5d700ffe