[INFO] fetching crate cell 0.1.8...
[INFO] checking cell-0.1.8 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate cell 0.1.8 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate cell 0.1.8 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 cell 0.1.8
[INFO] finished tweaking crates.io crate cell 0.1.8
[INFO] tweaked toml for crates.io crate cell 0.1.8 written to /workspace/builds/worker-2-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] 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] 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] 66f1d4a2ceee0571af8e2ee72c55dba9cd47af0392b50faaf921cb08bc8a7a43
[INFO] running `Command { std: "docker" "start" "-a" "66f1d4a2ceee0571af8e2ee72c55dba9cd47af0392b50faaf921cb08bc8a7a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66f1d4a2ceee0571af8e2ee72c55dba9cd47af0392b50faaf921cb08bc8a7a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66f1d4a2ceee0571af8e2ee72c55dba9cd47af0392b50faaf921cb08bc8a7a43", kill_on_drop: false }`
[INFO] [stdout] 66f1d4a2ceee0571af8e2ee72c55dba9cd47af0392b50faaf921cb08bc8a7a43
[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] 08a04015049950ed9bf136a3f3255398313116b96bf7be7f94e596c29fc0779a
[INFO] running `Command { std: "docker" "start" "-a" "08a04015049950ed9bf136a3f3255398313116b96bf7be7f94e596c29fc0779a", kill_on_drop: false }`
[INFO] [stderr]     Checking cell v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]    --> tests/cell.rs:367:3
[INFO] [stdout]     |
[INFO] [stdout] 366 | struct Val {
[INFO] [stdout]     |        --- field in this struct
[INFO] [stdout] 367 |   val: u64,
[INFO] [stdout]     |   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Val` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 0.14s
[INFO] running `Command { std: "docker" "inspect" "08a04015049950ed9bf136a3f3255398313116b96bf7be7f94e596c29fc0779a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a04015049950ed9bf136a3f3255398313116b96bf7be7f94e596c29fc0779a", kill_on_drop: false }`
[INFO] [stdout] 08a04015049950ed9bf136a3f3255398313116b96bf7be7f94e596c29fc0779a