[INFO] cloning repository https://github.com/thembones79/rust-traits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thembones79/rust-traits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthembones79%2Frust-traits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthembones79%2Frust-traits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c5e08505cc110084ba43558ea827593195d5a23
[INFO] checking thembones79/rust-traits against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthembones79%2Frust-traits" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/thembones79/rust-traits
[INFO] finished tweaking git repo https://github.com/thembones79/rust-traits
[INFO] tweaked toml for git repo https://github.com/thembones79/rust-traits written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/thembones79/rust-traits on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/thembones79/rust-traits 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddca61d6422f6d61b45dd1377b60bdaa4a99bfa805cd77e5a54148bfc1225790
[INFO] running `Command { std: "docker" "start" "-a" "ddca61d6422f6d61b45dd1377b60bdaa4a99bfa805cd77e5a54148bfc1225790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddca61d6422f6d61b45dd1377b60bdaa4a99bfa805cd77e5a54148bfc1225790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddca61d6422f6d61b45dd1377b60bdaa4a99bfa805cd77e5a54148bfc1225790", kill_on_drop: false }`
[INFO] [stdout] ddca61d6422f6d61b45dd1377b60bdaa4a99bfa805cd77e5a54148bfc1225790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b228e99fbd0b41a66caeeffbf5119d8d56d93eaf3ac8ca3db3b384f3cdd63d38
[INFO] running `Command { std: "docker" "start" "-a" "b228e99fbd0b41a66caeeffbf5119d8d56d93eaf3ac8ca3db3b384f3cdd63d38", kill_on_drop: false }`
[INFO] [stderr]     Checking traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let b2 = Basket::new(10);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b3`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let b3 = Basket::new(true);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_b3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s2 = Stack::new(vec![1, 2, 3]);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[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>;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 3 |     fn put(&mut self, item: T);
[INFO] [stdout] 4 |     fn is_empty(&self) -> bool;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b2`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let b2 = Basket::new(10);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_b2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b3`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let b3 = Basket::new(true);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_b3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s2 = Stack::new(vec![1, 2, 3]);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[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>;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 3 |     fn put(&mut self, item: T);
[INFO] [stdout] 4 |     fn is_empty(&self) -> bool;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "b228e99fbd0b41a66caeeffbf5119d8d56d93eaf3ac8ca3db3b384f3cdd63d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b228e99fbd0b41a66caeeffbf5119d8d56d93eaf3ac8ca3db3b384f3cdd63d38", kill_on_drop: false }`
[INFO] [stdout] b228e99fbd0b41a66caeeffbf5119d8d56d93eaf3ac8ca3db3b384f3cdd63d38
