[INFO] cloning repository https://github.com/ramses2099/project-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ramses2099/project-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Framses2099%2Fproject-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Framses2099%2Fproject-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9deb9c7e4c588ae902cf43e13c54e38de8103d6
[INFO] checking ramses2099/project-leetcode against try#d336647335db03a0fc5b24fc5325cd3905c5b8e8 for pr-151146
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Framses2099%2Fproject-leetcode" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ramses2099/project-leetcode
[INFO] finished tweaking git repo https://github.com/ramses2099/project-leetcode
[INFO] tweaked toml for git repo https://github.com/ramses2099/project-leetcode written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ramses2099/project-leetcode on toolchain d336647335db03a0fc5b24fc5325cd3905c5b8e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d336647335db03a0fc5b24fc5325cd3905c5b8e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ramses2099/project-leetcode 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" "+d336647335db03a0fc5b24fc5325cd3905c5b8e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+d336647335db03a0fc5b24fc5325cd3905c5b8e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e864c7ae9264ee4758a246065d04a17db74c3cb28d170aa71650ec8a3de93d61
[INFO] running `Command { std: "docker" "start" "-a" "e864c7ae9264ee4758a246065d04a17db74c3cb28d170aa71650ec8a3de93d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e864c7ae9264ee4758a246065d04a17db74c3cb28d170aa71650ec8a3de93d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e864c7ae9264ee4758a246065d04a17db74c3cb28d170aa71650ec8a3de93d61", kill_on_drop: false }`
[INFO] [stdout] e864c7ae9264ee4758a246065d04a17db74c3cb28d170aa71650ec8a3de93d61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+d336647335db03a0fc5b24fc5325cd3905c5b8e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef70fe2008e8d3eb92ad7d0e79527b5de0de17e5da87ff8124dfb19c6afc3fa8
[INFO] running `Command { std: "docker" "start" "-a" "ef70fe2008e8d3eb92ad7d0e79527b5de0de17e5da87ff8124dfb19c6afc3fa8", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode-lib v0.1.0 (/opt/rustwide/workdir/leetcode-lib)
[INFO] [stderr]     Checking leetcode-ui v0.1.0 (/opt/rustwide/workdir/leetcode-ui)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode-ui/src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut list1: LinkedList<i32> = LinkedList::from([2,4,3]);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode-ui/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut list2: LinkedList<i32> = LinkedList::from([5,6,4]);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode-ui/src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut list1: LinkedList<i32> = LinkedList::from([2,4,3]);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `List` is never used
[INFO] [stdout]  --> leetcode-ui/src/main.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type List = LinkedList<i32>;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]  --> leetcode-ui/src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn add_two_numbers(l1: List, l2: List) -> List {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> leetcode-ui/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut list2: LinkedList<i32> = LinkedList::from([5,6,4]);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `List` is never used
[INFO] [stdout]  --> leetcode-ui/src/main.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type List = LinkedList<i32>;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]  --> leetcode-ui/src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn add_two_numbers(l1: List, l2: List) -> List {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "ef70fe2008e8d3eb92ad7d0e79527b5de0de17e5da87ff8124dfb19c6afc3fa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef70fe2008e8d3eb92ad7d0e79527b5de0de17e5da87ff8124dfb19c6afc3fa8", kill_on_drop: false }`
[INFO] [stdout] ef70fe2008e8d3eb92ad7d0e79527b5de0de17e5da87ff8124dfb19c6afc3fa8