[INFO] cloning repository https://github.com/realwolf/leetcode_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realwolf/leetcode_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealwolf%2Fleetcode_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealwolf%2Fleetcode_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 199ef811c2a7d78b6d842204b0072490dfc07b6b
[INFO] checking realwolf/leetcode_rs against 4d7c0cd298ace72490220301fa543d63a154f8ce for pr-164789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frealwolf%2Fleetcode_rs" "/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/realwolf/leetcode_rs
[INFO] finished tweaking git repo https://github.com/realwolf/leetcode_rs
[INFO] tweaked toml for git repo https://github.com/realwolf/leetcode_rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/realwolf/leetcode_rs on toolchain 4d7c0cd298ace72490220301fa543d63a154f8ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/realwolf/leetcode_rs 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" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359
[INFO] running `Command { std: "docker" "start" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359" "/opt/rustwide/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359" "/opt/rustwide/cargo-home/bin/cargo" "+4d7c0cd298ace72490220301fa543d63a154f8ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> examples/add_two_numbers.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let p = &result;
[INFO] [stdout]    |             ------- expected due to this value
[INFO] [stdout] ...
[INFO] [stdout] 71 |             p = Some(v.next);
[INFO] [stdout]    |                 ^^^^^^^^^^^^ expected `&Option<Box<ListNode>>`, found `Option<Option<Box<ListNode>>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&Option<Box<_>>`
[INFO] [stdout]                    found enum `Option<Option<Box<_>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: arguments to this function are incorrect
[INFO] [stdout]   --> examples/add_two_numbers.rs:75:26
[INFO] [stdout]    |
[INFO] [stdout] 75 |     return Some(Box::new(generate_list_node(&mut vec_result, vec_result)));
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^ ---------------  ---------- unexpected argument #2 of type `Vec<i32>`
[INFO] [stdout]    |                                             |
[INFO] [stdout]    |                                             argument #1 of type `Option<Box<ListNode>>` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> examples/add_two_numbers.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn generate_list_node(input: Option<Box<ListNode>>, vec_val: &Vec<i32>) -> Option<Box<ListNode>>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^ ----------------------------
[INFO] [stdout] help: did you mean
[INFO] [stdout]    |
[INFO] [stdout] 75 -     return Some(Box::new(generate_list_node(&mut vec_result, vec_result)));
[INFO] [stdout] 75 +     return Some(Box::new(generate_list_node(/* Option<Box<ListNode>> */, &mut vec_result)));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> examples/add_two_numbers.rs:75:26
[INFO] [stdout]    |
[INFO] [stdout] 75 |     return Some(Box::new(generate_list_node(&mut vec_result, vec_result)));
[INFO] [stdout]    |                 -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `ListNode`, found `Option<Box<ListNode>>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `ListNode`
[INFO] [stdout]                 found enum `Option<Box<ListNode>>`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> /rustc/4d7c0cd298ace72490220301fa543d63a154f8ce/library/alloc/src/boxed.rs:368:11
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> examples/add_two_numbers.rs:79:80
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn generate_list_node(input: Option<Box<ListNode>>, vec_val: &Vec<i32>) -> Option<Box<ListNode>>
[INFO] [stdout]    |        ------------------                                                      ^^^^^^^^^^^^^^^^^^^^^ expected `Option<Box<ListNode>>`, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Option<Box<ListNode>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] help: consider returning the local binding `input`
[INFO] [stdout]    |
[INFO] [stdout] 80 | {
[INFO] [stdout] 81 ~     input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/add_two_numbers.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut l1: ListNode = ListNode { val: 2, next: 
[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]   --> examples/add_two_numbers.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut l2: ListNode = ListNode { val: 5, next: 
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `leetcode_rs` (example "add_two_numbers") due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359", kill_on_drop: false }`
[INFO] [stdout] 4d9d009b988221871ffb35b443cbfc6684ab1a66270690e37a95148d881c5359
