[INFO] fetching crate laby_macros 0.3.0...
[INFO] checking laby_macros-0.3.0 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate laby_macros 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate laby_macros 0.3.0 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding raw-cpuid v10.7.0 (available: v11.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoap v1.0.1
[INFO] [stderr]   Downloaded laby_common v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7904ea7547500c041e55ccf797b3da6dc4db3fd429fe3cb0870d9579f9e841b5
[INFO] running `Command { std: "docker" "start" "-a" "7904ea7547500c041e55ccf797b3da6dc4db3fd429fe3cb0870d9579f9e841b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7904ea7547500c041e55ccf797b3da6dc4db3fd429fe3cb0870d9579f9e841b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7904ea7547500c041e55ccf797b3da6dc4db3fd429fe3cb0870d9579f9e841b5", kill_on_drop: false }`
[INFO] [stdout] 7904ea7547500c041e55ccf797b3da6dc4db3fd429fe3cb0870d9579f9e841b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92d99694fde8fa61342d71c47b63d0c433eb23c2dd6fb06c8d0b2e5e13ecfbf0
[INFO] running `Command { std: "docker" "start" "-a" "92d99694fde8fa61342d71c47b63d0c433eb23c2dd6fb06c8d0b2e5e13ecfbf0", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoap v1.0.1
[INFO] [stderr]     Checking raw-cpuid v10.7.0
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v1.0.109
[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 3.35s
[INFO] running `Command { std: "docker" "inspect" "92d99694fde8fa61342d71c47b63d0c433eb23c2dd6fb06c8d0b2e5e13ecfbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92d99694fde8fa61342d71c47b63d0c433eb23c2dd6fb06c8d0b2e5e13ecfbf0", kill_on_drop: false }`
[INFO] [stdout] 92d99694fde8fa61342d71c47b63d0c433eb23c2dd6fb06c8d0b2e5e13ecfbf0