[INFO] fetching crate intrusive-collections 0.9.6...
[INFO] checking intrusive-collections-0.9.6 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate intrusive-collections 0.9.6 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate intrusive-collections 0.9.6 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 intrusive-collections 0.9.6
[INFO] finished tweaking crates.io crate intrusive-collections 0.9.6
[INFO] tweaked toml for crates.io crate intrusive-collections 0.9.6 written to /workspace/builds/worker-6-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e94ce1fab8fea754c0d659048283b2c68345c4f30f75854589ecc7b5f6d1f0d3
[INFO] running `Command { std: "docker" "start" "-a" "e94ce1fab8fea754c0d659048283b2c68345c4f30f75854589ecc7b5f6d1f0d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e94ce1fab8fea754c0d659048283b2c68345c4f30f75854589ecc7b5f6d1f0d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e94ce1fab8fea754c0d659048283b2c68345c4f30f75854589ecc7b5f6d1f0d3", kill_on_drop: false }`
[INFO] [stdout] e94ce1fab8fea754c0d659048283b2c68345c4f30f75854589ecc7b5f6d1f0d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2872fa27d3aeae879d58763454ea5561ae619a21da28a85ea7587eac3a3bed0b
[INFO] running `Command { std: "docker" "start" "-a" "2872fa27d3aeae879d58763454ea5561ae619a21da28a85ea7587eac3a3bed0b", kill_on_drop: false }`
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking memoffset v0.9.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking intrusive-collections v0.9.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `unwrap_unchecked` is never used
[INFO] [stdout]   --> src/unchecked_option.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait UncheckedOptionExt<T> {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 18 |     unsafe fn unwrap_unchecked(self) -> T;
[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] [stdout] warning: method `unwrap_unchecked` is never used
[INFO] [stdout]   --> src/unchecked_option.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait UncheckedOptionExt<T> {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 18 |     unsafe fn unwrap_unchecked(self) -> T;
[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 1.25s
[INFO] running `Command { std: "docker" "inspect" "2872fa27d3aeae879d58763454ea5561ae619a21da28a85ea7587eac3a3bed0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2872fa27d3aeae879d58763454ea5561ae619a21da28a85ea7587eac3a3bed0b", kill_on_drop: false }`
[INFO] [stdout] 2872fa27d3aeae879d58763454ea5561ae619a21da28a85ea7587eac3a3bed0b