[INFO] fetching crate rbp-clustering 1.0.0...
[INFO] checking rbp-clustering-1.0.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate rbp-clustering 1.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rbp-clustering 1.0.0
[INFO] finished tweaking crates.io crate rbp-clustering 1.0.0
[INFO] tweaked toml for crates.io crate rbp-clustering 1.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rbp-clustering 1.0.0 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 rbp-clustering 1.0.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 688cac92fb4422bf5568ffabfd9ab6ab94a9068883a521600d8ae7e3c0390937
[INFO] running `Command { std: "docker" "start" "-a" "688cac92fb4422bf5568ffabfd9ab6ab94a9068883a521600d8ae7e3c0390937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "688cac92fb4422bf5568ffabfd9ab6ab94a9068883a521600d8ae7e3c0390937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "688cac92fb4422bf5568ffabfd9ab6ab94a9068883a521600d8ae7e3c0390937", kill_on_drop: false }`
[INFO] [stdout] 688cac92fb4422bf5568ffabfd9ab6ab94a9068883a521600d8ae7e3c0390937
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f8e858fd257335fe63aa50b8877d1787a223621ee1def9b708d3351448be3f22
[INFO] running `Command { std: "docker" "start" "-a" "f8e858fd257335fe63aa50b8877d1787a223621ee1def9b708d3351448be3f22", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.181
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling unicode-ident v1.0.23
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling anyhow v1.0.101
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking getrandom v0.3.4
[INFO] [stderr]     Checking rand_core v0.9.5
[INFO] [stderr]     Checking uuid v1.20.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking rbp-core v1.0.0
[INFO] [stderr]     Checking rbp-cards v1.0.0
[INFO] [stderr]     Checking rbp-transport v1.0.0
[INFO] [stderr]     Checking rbp-gameplay v1.0.0
[INFO] [stderr]     Checking rbp-clustering v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Layer` is never constructed
[INFO] [stdout]   --> src/layer.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Layer<const K: usize, const N: usize> {
[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] [stdout] warning: method `abstraction` is never used
[INFO] [stdout]   --> src/layer.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<const K: usize, const N: usize> Layer<K, N> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn abstraction(&self, i: usize) -> Abstraction {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup`, `metric`, and `future` are never used
[INFO] [stdout]   --> src/layer.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<const K: usize, const N: usize> Layer<K, N> {
[INFO] [stdout]    | ------------------------------------------------ methods in this implementation
[INFO] [stdout] 49 |     /// Builds a lookup table mapping each isomorphism to its nearest cluster abstraction.
[INFO] [stdout] 50 |     fn lookup(&self) -> Lookup
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn metric(&self) -> Metric {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92 |     fn future(&self) -> Future {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rbp-clustering` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Layer` is never constructed
[INFO] [stdout]   --> src/layer.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Layer<const K: usize, const N: usize> {
[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] [stdout] warning: method `abstraction` is never used
[INFO] [stdout]   --> src/layer.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<const K: usize, const N: usize> Layer<K, N> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn abstraction(&self, i: usize) -> Abstraction {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup`, `metric`, and `future` are never used
[INFO] [stdout]   --> src/layer.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<const K: usize, const N: usize> Layer<K, N> {
[INFO] [stdout]    | ------------------------------------------------ methods in this implementation
[INFO] [stdout] 49 |     /// Builds a lookup table mapping each isomorphism to its nearest cluster abstraction.
[INFO] [stdout] 50 |     fn lookup(&self) -> Lookup
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn metric(&self) -> Metric {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92 |     fn future(&self) -> Future {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rbp-clustering` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f8e858fd257335fe63aa50b8877d1787a223621ee1def9b708d3351448be3f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e858fd257335fe63aa50b8877d1787a223621ee1def9b708d3351448be3f22", kill_on_drop: false }`
[INFO] [stdout] f8e858fd257335fe63aa50b8877d1787a223621ee1def9b708d3351448be3f22
