[INFO] fetching crate rustica 0.12.0...
[INFO] checking rustica-0.12.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate rustica 0.12.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rustica 0.12.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rustica 0.12.0
[INFO] tweaked toml for crates.io crate rustica 0.12.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustica 0.12.0 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustica 0.12.0 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44c37e3bd13455d15ccd715dcef352e24e862cdb9191220abde985875f9f11c6
[INFO] running `Command { std: "docker" "start" "-a" "44c37e3bd13455d15ccd715dcef352e24e862cdb9191220abde985875f9f11c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44c37e3bd13455d15ccd715dcef352e24e862cdb9191220abde985875f9f11c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44c37e3bd13455d15ccd715dcef352e24e862cdb9191220abde985875f9f11c6", kill_on_drop: false }`
[INFO] [stdout] 44c37e3bd13455d15ccd715dcef352e24e862cdb9191220abde985875f9f11c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20d4f9d69d9024152652b223a7519016f76dea5b74731f146817708fdfc4da2d
[INFO] running `Command { std: "docker" "start" "-a" "20d4f9d69d9024152652b223a7519016f76dea5b74731f146817708fdfc4da2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling cc v1.2.59
[INFO] [stderr]     Checking env_filter v1.0.1
[INFO] [stderr]     Checking page_size v0.6.0
[INFO] [stderr]    Compiling quickcheck_macros v1.2.0
[INFO] [stderr]     Checking clap v4.6.0
[INFO] [stderr]     Checking env_logger v0.11.10
[INFO] [stderr]     Checking rand v0.10.0
[INFO] [stderr]     Checking quickcheck v1.1.0
[INFO] [stderr]    Compiling alloca v0.4.0
[INFO] [stderr]     Checking rustica v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.8.2
[INFO] [stdout] error: struct `SemigroupExtAdapter` is never constructed
[INFO] [stdout]    --> src/traits/semigroup.rs:139:12
[INFO] [stdout]     |
[INFO] [stdout] 139 | pub struct SemigroupExtAdapter<T>(T);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustica` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "20d4f9d69d9024152652b223a7519016f76dea5b74731f146817708fdfc4da2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20d4f9d69d9024152652b223a7519016f76dea5b74731f146817708fdfc4da2d", kill_on_drop: false }`
[INFO] [stdout] 20d4f9d69d9024152652b223a7519016f76dea5b74731f146817708fdfc4da2d
