[INFO] cloning repository https://github.com/alburtwang/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alburtwang/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falburtwang%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falburtwang%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3135de4080ad64074fc327d04442108f18d3698
[INFO] checking alburtwang/leetcode against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falburtwang%2Fleetcode" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alburtwang/leetcode on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alburtwang/leetcode
[INFO] finished tweaking git repo https://github.com/alburtwang/leetcode
[INFO] tweaked toml for git repo https://github.com/alburtwang/leetcode written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/alburtwang/leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8b31c29b58b26a29c7f1743e84be4fd5b9c2195a9cfc8602bc7148af495ff2c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d8b31c29b58b26a29c7f1743e84be4fd5b9c2195a9cfc8602bc7148af495ff2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8b31c29b58b26a29c7f1743e84be4fd5b9c2195a9cfc8602bc7148af495ff2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b31c29b58b26a29c7f1743e84be4fd5b9c2195a9cfc8602bc7148af495ff2c", kill_on_drop: false }`
[INFO] [stdout] d8b31c29b58b26a29c7f1743e84be4fd5b9c2195a9cfc8602bc7148af495ff2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c824010461bfcab544f4f2413da86629c0f4066cece3087d7e5fe3694fe2087d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c824010461bfcab544f4f2413da86629c0f4066cece3087d7e5fe3694fe2087d", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `983`
[INFO] [stdout]   --> src/bin/983.rs:2:2
[INFO] [stdout]    |
[INFO] [stdout] 2  | /  #[derive(Debug, PartialEq, Eq)]
[INFO] [stdout] 3  | |  pub struct TreeNode {
[INFO] [stdout] 4  | |    pub val: i32,
[INFO] [stdout] 5  | |    pub left: Option<Rc<RefCell<TreeNode>>>,
[INFO] [stdout] ...  |
[INFO] [stdout] 49 | |     }
[INFO] [stdout] 50 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/bin/983.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/bin/1021.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_outer_parentheses`
[INFO] [stdout]  --> src/bin/1021.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn remove_outer_parentheses(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `morsesWord` should have a snake case name
[INFO] [stdout]   --> src/bin/804.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut morsesWord = HashMap::new();
[INFO] [stdout]    |                 ^^^^^^^^^^ help: convert the identifier to snake case: `morses_word`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode`
[INFO] [stdout] warning: variable `morsesWord` should have a snake case name
[INFO] [stdout]   --> src/bin/804.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut morsesWord = HashMap::new();
[INFO] [stdout]    |                 ^^^^^^^^^^ help: convert the identifier to snake case: `morses_word`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/bin/1021.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_outer_parentheses`
[INFO] [stdout]  --> src/bin/1021.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub fn remove_outer_parentheses(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c824010461bfcab544f4f2413da86629c0f4066cece3087d7e5fe3694fe2087d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c824010461bfcab544f4f2413da86629c0f4066cece3087d7e5fe3694fe2087d", kill_on_drop: false }`
[INFO] [stdout] c824010461bfcab544f4f2413da86629c0f4066cece3087d7e5fe3694fe2087d