[INFO] cloning repository https://github.com/Gearhartlove/leest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gearhartlove/leest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGearhartlove%2Fleest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGearhartlove%2Fleest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1cd900fde7b5f32f52a0bab8140b9bb4f23f29ef
[INFO] testing Gearhartlove/leest against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGearhartlove%2Fleest" "/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/Gearhartlove/leest
[INFO] finished tweaking git repo https://github.com/Gearhartlove/leest
[INFO] tweaked toml for git repo https://github.com/Gearhartlove/leest written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Gearhartlove/leest on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Gearhartlove/leest 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" "+1.99.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f
[INFO] running `Command { std: "docker" "start" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", 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" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling leest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/worked_problems/shift_2d_grid.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `worked_problems::baseball_game`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use worked_problems::baseball_game;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |                  let mut new_score = *record.last()? * 2;
[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 assigned to `new_score` is never read
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:42:43
[INFO] [stdout]    |
[INFO] [stdout] 42 |                  let mut new_score: i32 = 0;
[INFO] [stdout]    |                                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 45 |                  new_score = last_element + second_last_element ;
[INFO] [stdout]    |                  ---------------------------------------------- `new_score` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/worked_problems/top_k_frequent_elements.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..k {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut result_matrix = grid.clone();
[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/worked_problems/shift_2d_grid.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut row = return_grid.get_mut(new_row_pos).unwrap();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_matrix`
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut result_matrix = grid.clone();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cal_points` is never used
[INFO] [stdout]  --> src/worked_problems/baseball_game.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn cal_points(ops: Vec<&str>) -> 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: enum `Ops` is never used
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Ops {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `handle_ops` is never used
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Ops {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn handle_ops(op: Ops, record: &mut Vec<i32>) -> Option<bool> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `top_k_frequent` is never used
[INFO] [stdout]  --> src/worked_problems/top_k_frequent_elements.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn top_k_frequent(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shift_grid` is never used
[INFO] [stdout]  --> src/worked_problems/shift_2d_grid.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn shift_grid(grid: Vec<Vec<i32>>, shift: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ROWS` should have a snake case name
[INFO] [stdout]  --> src/worked_problems/shift_2d_grid.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let ROWS = return_grid.len();
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case: `rows`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `COLS` should have a snake case name
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let COLS = return_grid[0].len();
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `cols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SIZE` should have a snake case name
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let SIZE = ROWS * COLS;
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let _ = std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling leest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/worked_problems/shift_2d_grid.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `worked_problems::baseball_game`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use worked_problems::baseball_game;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |                  let mut new_score = *record.last()? * 2;
[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 assigned to `new_score` is never read
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:42:43
[INFO] [stdout]    |
[INFO] [stdout] 42 |                  let mut new_score: i32 = 0;
[INFO] [stdout]    |                                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 45 |                  new_score = last_element + second_last_element ;
[INFO] [stdout]    |                  ---------------------------------------------- `new_score` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/worked_problems/top_k_frequent_elements.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..k {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut result_matrix = grid.clone();
[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/worked_problems/shift_2d_grid.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let mut row = return_grid.get_mut(new_row_pos).unwrap();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_matrix`
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let mut result_matrix = grid.clone();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_matrix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `INTEGER` is never constructed
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Ops {
[INFO] [stdout]    |      --- variant in this enum
[INFO] [stdout] 31 |     INTEGER,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ROWS` should have a snake case name
[INFO] [stdout]  --> src/worked_problems/shift_2d_grid.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let ROWS = return_grid.len();
[INFO] [stdout]   |         ^^^^ help: convert the identifier to snake case: `rows`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `COLS` should have a snake case name
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let COLS = return_grid[0].len();
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `cols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SIZE` should have a snake case name
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let SIZE = ROWS * COLS;
[INFO] [stdout]    |         ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let _ = std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stderr]  --> src/worked_problems/shift_2d_grid.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem::replace;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `worked_problems::baseball_game`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use worked_problems::baseball_game;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/worked_problems/baseball_game.rs:51:22
[INFO] [stderr]    |
[INFO] [stderr] 51 |                  let mut new_score = *record.last()? * 2;
[INFO] [stderr]    |                      ----^^^^^^^^^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `new_score` is never read
[INFO] [stderr]   --> src/worked_problems/baseball_game.rs:42:43
[INFO] [stderr]    |
[INFO] [stderr] 42 |                  let mut new_score: i32 = 0;
[INFO] [stderr]    |                                           ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 45 |                  new_score = last_element + second_last_element ;
[INFO] [stderr]    |                  ---------------------------------------------- `new_score` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/worked_problems/top_k_frequent_elements.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for i in 0..k {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut result_matrix = grid.clone();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |             let mut row = return_grid.get_mut(new_row_pos).unwrap();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result_matrix`
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut result_matrix = grid.clone();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `INTEGER` is never constructed
[INFO] [stderr]   --> src/worked_problems/baseball_game.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | enum Ops {
[INFO] [stderr]    |      --- variant in this enum
[INFO] [stderr] 31 |     INTEGER,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `ROWS` should have a snake case name
[INFO] [stderr]  --> src/worked_problems/shift_2d_grid.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let ROWS = return_grid.len();
[INFO] [stderr]   |         ^^^^ help: convert the identifier to snake case: `rows`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `COLS` should have a snake case name
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let COLS = return_grid[0].len();
[INFO] [stderr]    |         ^^^^ help: convert the identifier to snake case: `cols`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `SIZE` should have a snake case name
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let SIZE = ROWS * COLS;
[INFO] [stderr]    |         ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 40 |             let _ = std::mem::replace(&mut row[adjusted_new_index], **k);
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `leest` (bin "leest" test) generated 13 warnings (run `cargo fix --bin "leest" -p leest --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/leest-ace277d384f68a5e)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test worked_problems::baseball_game::tests::baseball_works ... ok
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_k_works ... ok
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_nxn_works ... ok
[INFO] [stdout] test worked_problems::top_k_frequent_elements::tests::working ... FAILED
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_mxn_works ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- worked_problems::top_k_frequent_elements::tests::working stdout ----
[INFO] [stdout] [2, 1]
[INFO] [stdout] 
[INFO] [stdout] thread 'worked_problems::top_k_frequent_elements::tests::working' (179) panicked at src/worked_problems/top_k_frequent_elements.rs:43:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: [1, 2]
[INFO] [stdout]  right: [2, 1]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5dc2d61186c1 - <<std[104cf6e2632825ea]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c831bd917ebf35f]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5dc2d612cb6a - core[7c831bd917ebf35f]::fmt::write
[INFO] [stdout]    2:     0x5dc2d611cb5c - <alloc[2fdc3f7464fcf288]::vec::Vec<u8> as core[7c831bd917ebf35f]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5dc2d60f4ca6 - std[104cf6e2632825ea]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5dc2d6110dd9 - std[104cf6e2632825ea]::panicking::default_hook
[INFO] [stdout]    5:     0x5dc2d60ad290 - test[73009c9f9aebf890]::test_main_inner::<test[73009c9f9aebf890]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5dc2d6110f92 - std[104cf6e2632825ea]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5dc2d60f4d52 - std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5dc2d60ed6f9 - std[104cf6e2632825ea]::sys::backtrace::__rust_end_short_backtrace::<std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5dc2d60f594d - __rustc[b0d56fa5b193ad05]::rust_begin_unwind
[INFO] [stdout]   10:     0x5dc2d612d29c - core[7c831bd917ebf35f]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5dc2d612d1b3 - core[7c831bd917ebf35f]::panicking::assert_failed_inner
[INFO] [stdout]   12:     0x5dc2d609f1d3 - core[7c831bd917ebf35f]::panicking::assert_failed::<alloc[2fdc3f7464fcf288]::vec::Vec<i32>, alloc[2fdc3f7464fcf288]::vec::Vec<i32>>
[INFO] [stdout]   13:     0x5dc2d609ce61 - leest[1d4c102d9a56c97b]::worked_problems::top_k_frequent_elements::tests::working
[INFO] [stdout]   14:     0x5dc2d60a0509 - <leest[1d4c102d9a56c97b]::worked_problems::top_k_frequent_elements::tests::working::{closure#0} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x5dc2d60a057b - test[73009c9f9aebf890]::__rust_begin_short_backtrace::<core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>, fn() -> core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>>
[INFO] [stdout]   16:     0x5dc2d60adbe5 - test[73009c9f9aebf890]::run_test::{closure#0}
[INFO] [stdout]   17:     0x5dc2d60a6fa4 - std[104cf6e2632825ea]::sys::backtrace::__rust_begin_short_backtrace::<test[73009c9f9aebf890]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x5dc2d60b0d42 - <std[104cf6e2632825ea]::thread::lifecycle::spawn_unchecked<test[73009c9f9aebf890]::run_test::{closure#1}, ()>::{closure#1} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x5dc2d6117f99 - <std[104cf6e2632825ea]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x785a6785d07a - <unknown>
[INFO] [stdout]   21:     0x785a678f0534 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     worked_problems::top_k_frequent_elements::tests::working
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin leest`
[INFO] running `Command { std: "docker" "inspect" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f", kill_on_drop: false }`
[INFO] [stdout] fbf0f5fed9f982d7c3bb2f6b7e923b394c373ee7096b778cda07a962e755169f
