[INFO] cloning repository https://github.com/1nsomnes/LeetCodeAlgorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1nsomnes/LeetCodeAlgorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1nsomnes%2FLeetCodeAlgorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1nsomnes%2FLeetCodeAlgorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2e798912fdf96a50ea590c26744b380b62efde1
[INFO] checking 1nsomnes/LeetCodeAlgorithms against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1nsomnes%2FLeetCodeAlgorithms" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/1nsomnes/LeetCodeAlgorithms
[INFO] finished tweaking git repo https://github.com/1nsomnes/LeetCodeAlgorithms
[INFO] tweaked toml for git repo https://github.com/1nsomnes/LeetCodeAlgorithms written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/1nsomnes/LeetCodeAlgorithms on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/1nsomnes/LeetCodeAlgorithms 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8959f68f090de73d40d5febf482106ef4e73bb949a297032935b59c7cc0ad1a6
[INFO] running `Command { std: "docker" "start" "-a" "8959f68f090de73d40d5febf482106ef4e73bb949a297032935b59c7cc0ad1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8959f68f090de73d40d5febf482106ef4e73bb949a297032935b59c7cc0ad1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8959f68f090de73d40d5febf482106ef4e73bb949a297032935b59c7cc0ad1a6", kill_on_drop: false }`
[INFO] [stdout] 8959f68f090de73d40d5febf482106ef4e73bb949a297032935b59c7cc0ad1a6
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c8420a8cabc88e6389f12d4376622e5fc4f07caa91c864f2fc5c82ea225ed2b
[INFO] running `Command { std: "docker" "start" "-a" "5c8420a8cabc88e6389f12d4376622e5fc4f07caa91c864f2fc5c82ea225ed2b", kill_on_drop: false }`
[INFO] [stderr]     Checking LeetCodeAlgorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/Day1/SpiralMatrix.rs:53:33
[INFO] [stdout]    |
[INFO] [stdout] 53 |         assert_eq!(spiral_order((matrix)), answer);
[INFO] [stdout]    |                                 ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 53 -         assert_eq!(spiral_order((matrix)), answer);
[INFO] [stdout] 53 +         assert_eq!(spiral_order(matrix ), answer);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/Day1/SpiralMatrix.rs:58:33
[INFO] [stdout]    |
[INFO] [stdout] 58 |         assert_eq!(spiral_order((matrix)), answer);
[INFO] [stdout]    |                                 ^      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 58 -         assert_eq!(spiral_order((matrix)), answer);
[INFO] [stdout] 58 +         assert_eq!(spiral_order(matrix ), answer);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/Day3/RemoveNodeFromEnd.rs:17:68
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: 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<RemoveNodeFromEnd::ListNode>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] help: consider returning the local binding `head`
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout] 19 +     head
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/Day1/HappyNumber.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut sum:i32 = 0;
[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: value passed to `sum` is never read
[INFO] [stdout]  --> src/Day1/HappyNumber.rs:6:40
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn sum_digit_squares(value:String, mut sum: i32,  cache: &mut Vec<i32>) -> i32 {
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/Day3/RemoveNodeFromEnd.rs:17:68
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: 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<RemoveNodeFromEnd::ListNode>>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] help: consider returning the local binding `head`
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout] 19 +     head
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Day2/MultiplyStrings.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut top = split_string(num1,7);
[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]   --> src/Day2/MultiplyStrings.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut bot = split_string(num2, 7);
[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]  --> src/Day1/HappyNumber.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let mut sum:i32 = 0;
[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: value passed to `sum` is never read
[INFO] [stdout]  --> src/Day1/HappyNumber.rs:6:40
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn sum_digit_squares(value:String, mut sum: i32,  cache: &mut Vec<i32>) -> i32 {
[INFO] [stdout]   |                                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Day2/MultiplyStrings.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut top = split_string(num1,7);
[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]   --> src/Day2/MultiplyStrings.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut bot = split_string(num2, 7);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `LeetCodeAlgorithms` (bin "LeetCodeAlgorithms") due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `LeetCodeAlgorithms` (bin "LeetCodeAlgorithms" test) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5c8420a8cabc88e6389f12d4376622e5fc4f07caa91c864f2fc5c82ea225ed2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c8420a8cabc88e6389f12d4376622e5fc4f07caa91c864f2fc5c82ea225ed2b", kill_on_drop: false }`
[INFO] [stdout] 5c8420a8cabc88e6389f12d4376622e5fc4f07caa91c864f2fc5c82ea225ed2b
