[INFO] fetching crate barbarosa 0.2.0...
[INFO] checking barbarosa-0.2.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate barbarosa 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate barbarosa 0.2.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate barbarosa 0.2.0
[INFO] finished tweaking crates.io crate barbarosa 0.2.0
[INFO] tweaked toml for crates.io crate barbarosa 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate barbarosa 0.2.0 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5c79a2d59b93f735335227cf075efd2ac3448f8bdc5fb702d8f3df22e1d6194
[INFO] running `Command { std: "docker" "start" "-a" "c5c79a2d59b93f735335227cf075efd2ac3448f8bdc5fb702d8f3df22e1d6194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5c79a2d59b93f735335227cf075efd2ac3448f8bdc5fb702d8f3df22e1d6194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5c79a2d59b93f735335227cf075efd2ac3448f8bdc5fb702d8f3df22e1d6194", kill_on_drop: false }`
[INFO] [stdout] c5c79a2d59b93f735335227cf075efd2ac3448f8bdc5fb702d8f3df22e1d6194
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 274f237877ef150f020e55845d49db83fac90f1c63d7539defe1285fdce29f90
[INFO] running `Command { std: "docker" "start" "-a" "274f237877ef150f020e55845d49db83fac90f1c63d7539defe1285fdce29f90", kill_on_drop: false }`
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[INFO] [stderr]     Checking barbarosa v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CfopSolver` is never constructed
[INFO] [stdout]   --> src/cube_n/cube3/cfop/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct CfopSolver {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IntoOrientable` is never used
[INFO] [stdout]   --> src/cube_n/orientable/mod.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 | trait IntoOrientable
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CfopSolver` is never constructed
[INFO] [stdout]   --> src/cube_n/cube3/cfop/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct CfopSolver {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.35s
[INFO] running `Command { std: "docker" "inspect" "274f237877ef150f020e55845d49db83fac90f1c63d7539defe1285fdce29f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "274f237877ef150f020e55845d49db83fac90f1c63d7539defe1285fdce29f90", kill_on_drop: false }`
[INFO] [stdout] 274f237877ef150f020e55845d49db83fac90f1c63d7539defe1285fdce29f90