[INFO] cloning repository https://github.com/xeusteerapat/traits-basket
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xeusteerapat/traits-basket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeusteerapat%2Ftraits-basket", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeusteerapat%2Ftraits-basket'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b904734374029af29b9a7fdede91fb5c25078bf
[INFO] checking xeusteerapat/traits-basket against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeusteerapat%2Ftraits-basket" "/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/xeusteerapat/traits-basket on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xeusteerapat/traits-basket
[INFO] finished tweaking git repo https://github.com/xeusteerapat/traits-basket
[INFO] tweaked toml for git repo https://github.com/xeusteerapat/traits-basket written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xeusteerapat/traits-basket 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39904eb3937f9f2e8491c1ec4e63b0094f10972a62a8373c48afd802aced1a2a
[INFO] running `Command { std: "docker" "start" "-a" "39904eb3937f9f2e8491c1ec4e63b0094f10972a62a8373c48afd802aced1a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39904eb3937f9f2e8491c1ec4e63b0094f10972a62a8373c48afd802aced1a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39904eb3937f9f2e8491c1ec4e63b0094f10972a62a8373c48afd802aced1a2a", kill_on_drop: false }`
[INFO] [stdout] 39904eb3937f9f2e8491c1ec4e63b0094f10972a62a8373c48afd802aced1a2a
[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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5437903926b0af095c0d9a16f2107f688fa0151bf797751c08896c91063e0fc0
[INFO] running `Command { std: "docker" "start" "-a" "5437903926b0af095c0d9a16f2107f688fa0151bf797751c08896c91063e0fc0", kill_on_drop: false }`
[INFO] [stderr]     Checking traits-basket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `second_basket`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let second_basket = Basket::new(10);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_basket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_basket`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let second_basket = Basket::new(10);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_basket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third_basket`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let third_basket = Basket::new(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_basket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third_basket`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let third_basket = Basket::new(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_basket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s1 = Stack::new(vec![1, 2, 3]);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s1 = Stack::new(vec![1, 2, 3]);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get` and `is_empty` are never used
[INFO] [stdout]  --> src/container.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Container<T> {
[INFO] [stdout]   |           --------- methods in this trait
[INFO] [stdout] 2 |     fn get(&mut self) -> Option<T>; // abstract method, there is no default implementation
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 3 |     fn put(&mut self, item: T); // abstract method
[INFO] [stdout] 4 |     fn is_empty(&self) -> bool; // abstract method
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get` and `is_empty` are never used
[INFO] [stdout]  --> src/container.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Container<T> {
[INFO] [stdout]   |           --------- methods in this trait
[INFO] [stdout] 2 |     fn get(&mut self) -> Option<T>; // abstract method, there is no default implementation
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 3 |     fn put(&mut self, item: T); // abstract method
[INFO] [stdout] 4 |     fn is_empty(&self) -> bool; // abstract method
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "5437903926b0af095c0d9a16f2107f688fa0151bf797751c08896c91063e0fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5437903926b0af095c0d9a16f2107f688fa0151bf797751c08896c91063e0fc0", kill_on_drop: false }`
[INFO] [stdout] 5437903926b0af095c0d9a16f2107f688fa0151bf797751c08896c91063e0fc0