[INFO] cloning repository https://github.com/azizka85/oop_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/azizka85/oop_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazizka85%2Foop_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazizka85%2Foop_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2038a6da19401d614389c6f306f7934472fb75ec
[INFO] checking azizka85/oop_rust/2038a6da19401d614389c6f306f7934472fb75ec against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazizka85%2Foop_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/azizka85/oop_rust on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/azizka85/oop_rust
[INFO] finished tweaking git repo https://github.com/azizka85/oop_rust
[INFO] tweaked toml for git repo https://github.com/azizka85/oop_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/azizka85/oop_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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60067b93251b550cbf036e956deb61b4ff84ca3a26fe6e146f098351679b49a2
[INFO] running `Command { std: "docker" "start" "-a" "60067b93251b550cbf036e956deb61b4ff84ca3a26fe6e146f098351679b49a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60067b93251b550cbf036e956deb61b4ff84ca3a26fe6e146f098351679b49a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60067b93251b550cbf036e956deb61b4ff84ca3a26fe6e146f098351679b49a2", kill_on_drop: false }`
[INFO] [stdout] 60067b93251b550cbf036e956deb61b4ff84ca3a26fe6e146f098351679b49a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a0fbb30be9ae35a9ae94db85fdab82e9ce6567281af18f83fb7eb91719130cd
[INFO] running `Command { std: "docker" "start" "-a" "7a0fbb30be9ae35a9ae94db85fdab82e9ce6567281af18f83fb7eb91719130cd", kill_on_drop: false }`
[INFO] [stderr]     Checking linked_list v0.1.0 (/opt/rustwide/workdir/linked_list)
[INFO] [stderr]     Checking oop_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking circular_linked_list v0.1.0 (/opt/rustwide/workdir/circular_linked_list)
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> circular_linked_list/src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::{Rc, Weak};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Weak`
[INFO] [stdout]  --> circular_linked_list/src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::{Rc, Weak};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "7a0fbb30be9ae35a9ae94db85fdab82e9ce6567281af18f83fb7eb91719130cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a0fbb30be9ae35a9ae94db85fdab82e9ce6567281af18f83fb7eb91719130cd", kill_on_drop: false }`
[INFO] [stdout] 7a0fbb30be9ae35a9ae94db85fdab82e9ce6567281af18f83fb7eb91719130cd