[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 master#2fe50cd72c476ebacdedb14893e9632b4de961c2 for pr-116088-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGearhartlove%2Fleest" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gearhartlove/leest on toolchain 2fe50cd72c476ebacdedb14893e9632b4de961c2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0-tc1/source/Cargo.toml
[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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 791750c69acc29bb571da6345d74189d96113485c7b61d2fb22a9d376603304d
[INFO] running `Command { std: "docker" "start" "-a" "791750c69acc29bb571da6345d74189d96113485c7b61d2fb22a9d376603304d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "791750c69acc29bb571da6345d74189d96113485c7b61d2fb22a9d376603304d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "791750c69acc29bb571da6345d74189d96113485c7b61d2fb22a9d376603304d", kill_on_drop: false }`
[INFO] [stdout] 791750c69acc29bb571da6345d74189d96113485c7b61d2fb22a9d376603304d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 656073878b12d70afcbe879f37694894aa9507117b649859306482772ec556db
[INFO] running `Command { std: "docker" "start" "-a" "656073878b12d70afcbe879f37694894aa9507117b649859306482772ec556db", 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)]` 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: value assigned to `new_score` is never read
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |                  let mut new_score: i32 = 0;
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_matrix`
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:17
[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: 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: 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)]` 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)]` 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)]` 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] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "656073878b12d70afcbe879f37694894aa9507117b649859306482772ec556db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656073878b12d70afcbe879f37694894aa9507117b649859306482772ec556db", kill_on_drop: false }`
[INFO] [stdout] 656073878b12d70afcbe879f37694894aa9507117b649859306482772ec556db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9e754e83f814af94e6460f532508f2677be92e641b748402bf7d1806ac5ad41
[INFO] running `Command { std: "docker" "start" "-a" "c9e754e83f814af94e6460f532508f2677be92e641b748402bf7d1806ac5ad41", 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)]` 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: value assigned to `new_score` is never read
[INFO] [stdout]   --> src/worked_problems/baseball_game.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |                  let mut new_score: i32 = 0;
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_matrix`
[INFO] [stdout]   --> src/worked_problems/shift_2d_grid.rs:34:17
[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: 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: 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)]` 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)]` 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)]` 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] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "c9e754e83f814af94e6460f532508f2677be92e641b748402bf7d1806ac5ad41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e754e83f814af94e6460f532508f2677be92e641b748402bf7d1806ac5ad41", kill_on_drop: false }`
[INFO] [stdout] c9e754e83f814af94e6460f532508f2677be92e641b748402bf7d1806ac5ad41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b347782278e271286ebaa2bae8dbd6a8f2a37077d2d43285139cc8a04e288b80
[INFO] running `Command { std: "docker" "start" "-a" "b347782278e271286ebaa2bae8dbd6a8f2a37077d2d43285139cc8a04e288b80", 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)]` 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: value assigned to `new_score` is never read
[INFO] [stderr]   --> src/worked_problems/baseball_game.rs:42:26
[INFO] [stderr]    |
[INFO] [stderr] 42 |                  let mut new_score: i32 = 0;
[INFO] [stderr]    |                          ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[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)]` 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)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result_matrix`
[INFO] [stderr]   --> src/worked_problems/shift_2d_grid.rs:34:17
[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: 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: 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)]` 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)]` 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)]` 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" --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leest-9914c11adbb5a58c)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_mxn_works ... ok
[INFO] [stdout] test worked_problems::baseball_game::tests::baseball_works ... ok
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_nxn_works ... ok
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_k_works ... ok
[INFO] [stdout] test worked_problems::top_k_frequent_elements::tests::working ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `--bin leest`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- worked_problems::top_k_frequent_elements::tests::working stdout ----
[INFO] [stdout] [1, 2]
[INFO] [stdout] [2, 4, 3]
[INFO] [stdout] thread 'worked_problems::top_k_frequent_elements::tests::working' panicked at src/worked_problems/top_k_frequent_elements.rs:44:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: [2, 3, 4]
[INFO] [stdout]  right: [2, 4, 3]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55c2f7d183e6 - std::backtrace_rs::backtrace::libunwind::trace::hd7a456af414d63de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55c2f7d183e6 - std::backtrace_rs::backtrace::trace_unsynchronized::h64867240ea973bd5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55c2f7d183e6 - std::sys_common::backtrace::_print_fmt::h2808b222ea4d26d0
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55c2f7d183e6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h03f74bc036e21c80
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55c2f7d41980 - core::fmt::rt::Argument::fmt::h8121cad32ccb67f1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55c2f7d41980 - core::fmt::write::hba6738a49cae548f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55c2f7d15f7f - std::io::Write::write_fmt::h998dc49ddc9bbda8
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55c2f7d181c4 - std::sys_common::backtrace::_print::h12e2732351687df5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55c2f7d181c4 - std::sys_common::backtrace::print::h3977ff4fa70d37c3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55c2f7d19f37 - std::panicking::default_hook::{{closure}}::h3649b42de801f190
[INFO] [stdout]   10:     0x55c2f7d19c1d - std::panicking::default_hook::h3fb7ccab350417f5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55c2f7ce9f27 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcac2ee49c7d5205e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55c2f7ce9f27 - test::test_main::{{closure}}::ha6dc19c93a11f2d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55c2f7d1a556 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h29b8e785b856bb23
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55c2f7d1a556 - std::panicking::rust_panic_with_hook::h5efc89ef996de810
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55c2f7d1a2a2 - std::panicking::begin_panic_handler::{{closure}}::h6289f51ae1ae9efc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55c2f7d188e6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9f143e0a9d826e65
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55c2f7d1a000 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55c2f7c9dcd5 - core::panicking::panic_fmt::h5b9d04f36fd68862
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55c2f7c9e10b - core::panicking::assert_failed_inner::he8bf6244a405549a
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x55c2f7caedde - core::panicking::assert_failed::h6e7f9fdfa772c1e1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x55c2f7cb561d - leest::worked_problems::top_k_frequent_elements::tests::working::h2fe77dce2f374208
[INFO] [stdout]                                at /opt/rustwide/workdir/src/worked_problems/top_k_frequent_elements.rs:44:9
[INFO] [stdout]   22:     0x55c2f7cb5207 - leest::worked_problems::top_k_frequent_elements::tests::working::{{closure}}::hac2d071d38781c2d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/worked_problems/top_k_frequent_elements.rs:42:17
[INFO] [stdout]   23:     0x55c2f7ca5ad6 - core::ops::function::FnOnce::call_once::hc2f366d5a90f6f23
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55c2f7cef72f - core::ops::function::FnOnce::call_once::h547df4cc4781c42c
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55c2f7cef72f - test::__rust_begin_short_backtrace::h0751f8da0df8afc9
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x55c2f7cee581 - test::run_test_in_process::{{closure}}::h08b7e2b944f5d3bf
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x55c2f7cee581 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4eabe934da23f6d3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55c2f7cee581 - std::panicking::try::do_call::h8bce2a819a83d75f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55c2f7cee581 - std::panicking::try::h8d0ad43ca1e9dfe4
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55c2f7cee581 - std::panic::catch_unwind::h80c407981483a27f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55c2f7cee581 - test::run_test_in_process::h34f4f1cf26878dcc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x55c2f7cee581 - test::run_test::{{closure}}::hf98423759bd4e4de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x55c2f7cb5916 - test::run_test::{{closure}}::h31f9214a9865a468
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x55c2f7cb5916 - std::sys_common::backtrace::__rust_begin_short_backtrace::h97eebf57e64e4a3e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55c2f7cbaa17 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h10343cc6e645d5a7
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55c2f7cbaa17 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7676f5746d51f304
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55c2f7cbaa17 - std::panicking::try::do_call::h76c69ddb47b6692d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x55c2f7cbaa17 - std::panicking::try::h231004126786543e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x55c2f7cbaa17 - std::panic::catch_unwind::h519133dc1360745e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55c2f7cbaa17 - std::thread::Builder::spawn_unchecked_::{{closure}}::h7c96b1538d88533f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55c2f7cbaa17 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90e3a916fbad66da
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55c2f7d1f005 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12c26c313019b755
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55c2f7d1f005 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3a7c22937eaa10d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55c2f7d1f005 - std::sys::unix::thread::Thread::new::thread_start::h1ce303acc71f2e7d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f122f206ac3 - <unknown>
[INFO] [stdout]   46:     0x7f122f297bf4 - __clone
[INFO] [stdout]   47:                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 0.07s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b347782278e271286ebaa2bae8dbd6a8f2a37077d2d43285139cc8a04e288b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b347782278e271286ebaa2bae8dbd6a8f2a37077d2d43285139cc8a04e288b80", kill_on_drop: false }`
[INFO] [stdout] b347782278e271286ebaa2bae8dbd6a8f2a37077d2d43285139cc8a04e288b80
