[INFO] fetching crate xc3_model 0.21.0...
[INFO] checking xc3_model-0.21.0 against try#fcfb0ffc7ed7fc631df1136063939ef648434735 for pr-152543
[INFO] extracting crate xc3_model 0.21.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate xc3_model 0.21.0
[INFO] finished tweaking crates.io crate xc3_model 0.21.0
[INFO] tweaked toml for crates.io crate xc3_model 0.21.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xc3_model 0.21.0 on toolchain fcfb0ffc7ed7fc631df1136063939ef648434735
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xc3_model 0.21.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03ddd0cd93eac8d5e8a1062a6cf1dfe9eef8debb044919dc429720cd2e34eb95
[INFO] running `Command { std: "docker" "start" "-a" "03ddd0cd93eac8d5e8a1062a6cf1dfe9eef8debb044919dc429720cd2e34eb95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03ddd0cd93eac8d5e8a1062a6cf1dfe9eef8debb044919dc429720cd2e34eb95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ddd0cd93eac8d5e8a1062a6cf1dfe9eef8debb044919dc429720cd2e34eb95", kill_on_drop: false }`
[INFO] [stdout] 03ddd0cd93eac8d5e8a1062a6cf1dfe9eef8debb044919dc429720cd2e34eb95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcb0c93e414923af03e3fc6807faf79321e0673cf18e994ce40178d3baa36f89
[INFO] running `Command { std: "docker" "start" "-a" "dcb0c93e414923af03e3fc6807faf79321e0673cf18e994ce40178d3baa36f89", kill_on_drop: false }`
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[INFO] [stderr]     Checking xc3_model v0.21.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `merge_skeletons` is never used
[INFO] [stdout]    --> src/skeleton.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 | pub fn merge_skeletons(skeletons: &[Skeleton]) -> Option<Skeleton> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.41s
[INFO] running `Command { std: "docker" "inspect" "dcb0c93e414923af03e3fc6807faf79321e0673cf18e994ce40178d3baa36f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb0c93e414923af03e3fc6807faf79321e0673cf18e994ce40178d3baa36f89", kill_on_drop: false }`
[INFO] [stdout] dcb0c93e414923af03e3fc6807faf79321e0673cf18e994ce40178d3baa36f89