[INFO] fetching crate neocortex 3.0.3...
[INFO] checking neocortex-3.0.3 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate neocortex 3.0.3 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate neocortex 3.0.3 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 30 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65879a47900066833570a719dbaa51530940fa3b94035fdad01ac8387a094958
[INFO] running `Command { std: "docker" "start" "-a" "65879a47900066833570a719dbaa51530940fa3b94035fdad01ac8387a094958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65879a47900066833570a719dbaa51530940fa3b94035fdad01ac8387a094958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65879a47900066833570a719dbaa51530940fa3b94035fdad01ac8387a094958", kill_on_drop: false }`
[INFO] [stdout] 65879a47900066833570a719dbaa51530940fa3b94035fdad01ac8387a094958
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73bec085b37bc19f9396b8a8f58e112e47f52b30a19f4e89b1505cb5439b7341
[INFO] running `Command { std: "docker" "start" "-a" "73bec085b37bc19f9396b8a8f58e112e47f52b30a19f4e89b1505cb5439b7341", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking errno v0.3.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking 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] [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 6.79s
[INFO] running `Command { std: "docker" "inspect" "73bec085b37bc19f9396b8a8f58e112e47f52b30a19f4e89b1505cb5439b7341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73bec085b37bc19f9396b8a8f58e112e47f52b30a19f4e89b1505cb5439b7341", kill_on_drop: false }`
[INFO] [stdout] 73bec085b37bc19f9396b8a8f58e112e47f52b30a19f4e89b1505cb5439b7341