[INFO] fetching crate laby_macros 0.3.0...
[INFO] checking laby_macros-0.3.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate laby_macros 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate laby_macros 0.3.0 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 laby_macros 0.3.0
[INFO] finished tweaking crates.io crate laby_macros 0.3.0
[INFO] tweaked toml for crates.io crate laby_macros 0.3.0 written to /workspace/builds/worker-0-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 10 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.6.0)
[INFO] [stderr]       Adding raw-cpuid v10.7.0 (latest: v11.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.76)
[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 laby_common v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 112ed54a9f11b2a63d0e4427aeb59a6501782f8cfc33857df797c3fe9eb0e34f
[INFO] running `Command { std: "docker" "start" "-a" "112ed54a9f11b2a63d0e4427aeb59a6501782f8cfc33857df797c3fe9eb0e34f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "112ed54a9f11b2a63d0e4427aeb59a6501782f8cfc33857df797c3fe9eb0e34f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112ed54a9f11b2a63d0e4427aeb59a6501782f8cfc33857df797c3fe9eb0e34f", kill_on_drop: false }`
[INFO] [stdout] 112ed54a9f11b2a63d0e4427aeb59a6501782f8cfc33857df797c3fe9eb0e34f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0c3fea39394249f4f86c04ad305fd4caec111de75a2e08cacc58d6b5ab24c65f
[INFO] running `Command { std: "docker" "start" "-a" "0c3fea39394249f4f86c04ad305fd4caec111de75a2e08cacc58d6b5ab24c65f", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking itoap v1.0.1
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking raw-cpuid v10.7.0
[INFO] [stderr]     Checking laby_common v0.2.0
[INFO] [stderr]     Checking laby_macros v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `element` is never read
[INFO] [stdout]   --> src/node.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Node {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 65 |     pub element: Element,
[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: field `element` is never read
[INFO] [stdout]   --> src/node.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Node {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 65 |     pub element: Element,
[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 1.54s
[INFO] running `Command { std: "docker" "inspect" "0c3fea39394249f4f86c04ad305fd4caec111de75a2e08cacc58d6b5ab24c65f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c3fea39394249f4f86c04ad305fd4caec111de75a2e08cacc58d6b5ab24c65f", kill_on_drop: false }`
[INFO] [stdout] 0c3fea39394249f4f86c04ad305fd4caec111de75a2e08cacc58d6b5ab24c65f