[INFO] cloning repository https://github.com/HCO168/hco_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HCO168/hco_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be77ec0eb306246bde84a2f5d92abc87a6b151f9
[INFO] checking HCO168/hco_rust against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HCO168/hco_rust
[INFO] finished tweaking git repo https://github.com/HCO168/hco_rust
[INFO] tweaked toml for git repo https://github.com/HCO168/hco_rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HCO168/hco_rust on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/HCO168/hco_rust 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" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd3b79ff91e8f80e2bce4d6bc8a21f528ac940edc2a139bc0fa317162a886db4
[INFO] running `Command { std: "docker" "start" "-a" "bd3b79ff91e8f80e2bce4d6bc8a21f528ac940edc2a139bc0fa317162a886db4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd3b79ff91e8f80e2bce4d6bc8a21f528ac940edc2a139bc0fa317162a886db4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd3b79ff91e8f80e2bce4d6bc8a21f528ac940edc2a139bc0fa317162a886db4", kill_on_drop: false }`
[INFO] [stdout] bd3b79ff91e8f80e2bce4d6bc8a21f528ac940edc2a139bc0fa317162a886db4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16bce5b6b5b9be32b252abb94e36b4f35cd72476d22bb88a4b02351029a028bc
[INFO] running `Command { std: "docker" "start" "-a" "16bce5b6b5b9be32b252abb94e36b4f35cd72476d22bb88a4b02351029a028bc", kill_on_drop: false }`
[INFO] [stderr]     Checking lib v0.0.3-1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HasSign`
[INFO] [stdout]    --> src/math/fraction.rs:297:49
[INFO] [stdout]     |
[INFO] [stdout] 297 |     use crate::math::{Fraction, HasPartialSign, HasSign, IsInf, NegInf, PosInf};
[INFO] [stdout]     |                                                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Neg`
[INFO] [stdout]  --> src/math/traits/mul.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Neg;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Neg`
[INFO] [stdout]  --> src/math/traits/mul.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Neg;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/datas/map.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn all(&self) -> Vec<(&K, &V)> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 85 |         BTreeMap::all(self)
[INFO] [stdout]    |         ------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/math/traits/int.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     default fn gcd(self, other: Self) -> Self {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-17; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/datas/map.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn all(&self) -> Vec<(&K, &V)> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 85 |         BTreeMap::all(self)
[INFO] [stdout]    |         ------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]    --> src/math/traits/int.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     default fn gcd(self, other: Self) -> Self {
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: add `#![feature(specialization)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-17; consider upgrading it if it is out of date
[INFO] [stdout]     = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]     = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "16bce5b6b5b9be32b252abb94e36b4f35cd72476d22bb88a4b02351029a028bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16bce5b6b5b9be32b252abb94e36b4f35cd72476d22bb88a4b02351029a028bc", kill_on_drop: false }`
[INFO] [stdout] 16bce5b6b5b9be32b252abb94e36b4f35cd72476d22bb88a4b02351029a028bc
