[INFO] fetching crate neocortex 3.0.3...
[INFO] testing neocortex-3.0.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate neocortex 3.0.3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate neocortex 3.0.3
[INFO] finished tweaking crates.io crate neocortex 3.0.3
[INFO] tweaked toml for crates.io crate neocortex 3.0.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate neocortex 3.0.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61a0f0b4e48683377531f58985319c10b4f170a8a41597b70870dc0fddc52b3e
[INFO] running `Command { std: "docker" "start" "-a" "61a0f0b4e48683377531f58985319c10b4f170a8a41597b70870dc0fddc52b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61a0f0b4e48683377531f58985319c10b4f170a8a41597b70870dc0fddc52b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a0f0b4e48683377531f58985319c10b4f170a8a41597b70870dc0fddc52b3e", kill_on_drop: false }`
[INFO] [stdout] 61a0f0b4e48683377531f58985319c10b4f170a8a41597b70870dc0fddc52b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55f9888eb1b7ce6c0ff59a542e041618f1a4d8683ebbe09e31afd56a6fd55a43
[INFO] running `Command { std: "docker" "start" "-a" "55f9888eb1b7ce6c0ff59a542e041618f1a4d8683ebbe09e31afd56a6fd55a43", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling neocortex v3.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `BuilderState` is never used
[INFO] [stdout]  --> src/builder.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait BuilderState {}
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `Command { std: "docker" "inspect" "55f9888eb1b7ce6c0ff59a542e041618f1a4d8683ebbe09e31afd56a6fd55a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f9888eb1b7ce6c0ff59a542e041618f1a4d8683ebbe09e31afd56a6fd55a43", kill_on_drop: false }`
[INFO] [stdout] 55f9888eb1b7ce6c0ff59a542e041618f1a4d8683ebbe09e31afd56a6fd55a43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fdc4e394a59194ff752a91c6ade8dcdfffafc6291a362bd15473720d471b870
[INFO] running `Command { std: "docker" "start" "-a" "8fdc4e394a59194ff752a91c6ade8dcdfffafc6291a362bd15473720d471b870", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stdout] warning: trait `BuilderState` is never used
[INFO] [stdout]  --> src/builder.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait BuilderState {}
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling neocortex v3.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `BuilderState` is never used
[INFO] [stdout]  --> src/builder.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait BuilderState {}
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `Command { std: "docker" "inspect" "8fdc4e394a59194ff752a91c6ade8dcdfffafc6291a362bd15473720d471b870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fdc4e394a59194ff752a91c6ade8dcdfffafc6291a362bd15473720d471b870", kill_on_drop: false }`
[INFO] [stdout] 8fdc4e394a59194ff752a91c6ade8dcdfffafc6291a362bd15473720d471b870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7c8e1020ce58c288e736aff6454375707cf33ce3eb46df8aa5646a04d9cc6cd
[INFO] running `Command { std: "docker" "start" "-a" "f7c8e1020ce58c288e736aff6454375707cf33ce3eb46df8aa5646a04d9cc6cd", kill_on_drop: false }`
[INFO] [stderr] warning: trait `BuilderState` is never used
[INFO] [stderr]  --> src/builder.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub trait BuilderState {}
[INFO] [stderr]   |           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `neocortex` (lib) generated 1 warning
[INFO] [stderr] warning: `neocortex` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/neocortex-9d76b8586969db9d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests neocortex
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7c8e1020ce58c288e736aff6454375707cf33ce3eb46df8aa5646a04d9cc6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c8e1020ce58c288e736aff6454375707cf33ce3eb46df8aa5646a04d9cc6cd", kill_on_drop: false }`
[INFO] [stdout] f7c8e1020ce58c288e736aff6454375707cf33ce3eb46df8aa5646a04d9cc6cd