[INFO] fetching crate optimal-steepest 0.0.0...
[INFO] checking optimal-steepest-0.0.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate optimal-steepest 0.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate optimal-steepest 0.0.0 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 optimal-steepest 0.0.0
[INFO] finished tweaking crates.io crate optimal-steepest 0.0.0
[INFO] tweaked toml for crates.io crate optimal-steepest 0.0.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] [stderr]       Adding bit-set v0.5.3 (latest: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.6.3 (latest: v0.8.0)
[INFO] [stderr]       Adding blanket v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding derive-getters v0.3.0 (latest: v0.5.0)
[INFO] [stderr]       Adding derive_more v0.99.18 (latest: v1.0.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (latest: v0.6.5)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding structmeta v0.2.0 (latest: v0.3.0)
[INFO] [stderr]       Adding structmeta-derive v0.2.0 (latest: v0.3.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.76)
[INFO] [stderr]       Adding test-strategy v0.3.1 (latest: v0.4.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded blanket v0.3.0
[INFO] [stderr]   Downloaded test-strategy v0.3.1
[INFO] [stderr]   Downloaded derive-num-bounded v0.0.0
[INFO] [stderr]   Downloaded optimal-core v0.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1315c505d13e94ee3c68a7c017835e2ec3dec60723a842174afa132e2798ebb2
[INFO] running `Command { std: "docker" "start" "-a" "1315c505d13e94ee3c68a7c017835e2ec3dec60723a842174afa132e2798ebb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1315c505d13e94ee3c68a7c017835e2ec3dec60723a842174afa132e2798ebb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1315c505d13e94ee3c68a7c017835e2ec3dec60723a842174afa132e2798ebb2", kill_on_drop: false }`
[INFO] [stdout] 1315c505d13e94ee3c68a7c017835e2ec3dec60723a842174afa132e2798ebb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b53313bc6683641b988d48b51c728624faadbb59f4d57e19dbe6edde54031a6a
[INFO] running `Command { std: "docker" "start" "-a" "b53313bc6683641b988d48b51c728624faadbb59f4d57e19dbe6edde54031a6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling structmeta-derive v0.2.0
[INFO] [stderr]    Compiling blanket v0.3.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking streaming-iterator v0.1.9
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking derive-num-bounded v0.0.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking replace_with v0.1.7
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking optimal-core v0.0.0
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling structmeta v0.2.0
[INFO] [stderr]    Compiling test-strategy v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling derive-getters v0.3.0
[INFO] [stderr]     Checking proptest v1.5.0
[INFO] [stderr]     Checking optimal-steepest v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `optimal_core::prelude::*`
[INFO] [stdout]   --> src/backtracking_steepest/types.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use optimal_core::prelude::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optimal_core::prelude::*`
[INFO] [stdout]   --> src/backtracking_steepest/types.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use optimal_core::prelude::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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 3.48s
[INFO] running `Command { std: "docker" "inspect" "b53313bc6683641b988d48b51c728624faadbb59f4d57e19dbe6edde54031a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b53313bc6683641b988d48b51c728624faadbb59f4d57e19dbe6edde54031a6a", kill_on_drop: false }`
[INFO] [stdout] b53313bc6683641b988d48b51c728624faadbb59f4d57e19dbe6edde54031a6a