[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 1.94.0 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGearhartlove%2Fleest" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Gearhartlove/leest on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "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" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ea3f3822fa66af04f2ae6270fc401e27a3c37869672af551aa0565e6b317a34
[INFO] running `Command { std: "docker" "start" "-a" "0ea3f3822fa66af04f2ae6270fc401e27a3c37869672af551aa0565e6b317a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ea3f3822fa66af04f2ae6270fc401e27a3c37869672af551aa0565e6b317a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ea3f3822fa66af04f2ae6270fc401e27a3c37869672af551aa0565e6b317a34", kill_on_drop: false }`
[INFO] [stdout] 0ea3f3822fa66af04f2ae6270fc401e27a3c37869672af551aa0565e6b317a34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73fb8dbfca3d5a1afe210d88171f20d71a9cbfe2dc2a2ba9ae209a2c8a777423
[INFO] running `Command { std: "docker" "start" "-a" "73fb8dbfca3d5a1afe210d88171f20d71a9cbfe2dc2a2ba9ae209a2c8a777423", 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]    |                                           ^
[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] 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 `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "73fb8dbfca3d5a1afe210d88171f20d71a9cbfe2dc2a2ba9ae209a2c8a777423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73fb8dbfca3d5a1afe210d88171f20d71a9cbfe2dc2a2ba9ae209a2c8a777423", kill_on_drop: false }`
[INFO] [stdout] 73fb8dbfca3d5a1afe210d88171f20d71a9cbfe2dc2a2ba9ae209a2c8a777423
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ccd633351e8159e73c0ad4b80bab7ab8bd88d91a6ecedba04005e8d23ed68f3
[INFO] running `Command { std: "docker" "start" "-a" "6ccd633351e8159e73c0ad4b80bab7ab8bd88d91a6ecedba04005e8d23ed68f3", 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]    |                                           ^
[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] 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 `test` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "6ccd633351e8159e73c0ad4b80bab7ab8bd88d91a6ecedba04005e8d23ed68f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccd633351e8159e73c0ad4b80bab7ab8bd88d91a6ecedba04005e8d23ed68f3", kill_on_drop: false }`
[INFO] [stdout] 6ccd633351e8159e73c0ad4b80bab7ab8bd88d91a6ecedba04005e8d23ed68f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d1289595a2a4337cf14f4f705e7fb2320fe7ab0227389b28982e74edf0e8d51d
[INFO] running `Command { std: "docker" "start" "-a" "d1289595a2a4337cf14f4f705e7fb2320fe7ab0227389b28982e74edf0e8d51d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stdout] 
[INFO] [stderr]  --> src/worked_problems/shift_2d_grid.rs:3:5
[INFO] [stdout] running 5 tests
[INFO] [stderr]   |
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_k_works ... ok
[INFO] [stderr] 3 | use std::mem::replace;
[INFO] [stdout] test worked_problems::baseball_game::tests::baseball_works ... ok
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_mxn_works ... ok
[INFO] [stderr]   |
[INFO] [stdout] test worked_problems::shift_2d_grid::tests::shift_nxn_works ... ok
[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]    |                                           ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[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 `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/leest-792c616f6577182f)
[INFO] [stdout] test worked_problems::top_k_frequent_elements::tests::working ... FAILED
[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' (28) 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:     0x573b5a375042 - std::backtrace_rs::backtrace::libunwind::trace::hff358a60abf734fc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x573b5a375042 - std::backtrace_rs::backtrace::trace_unsynchronized::h3b121f916dd95ec6
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x573b5a375042 - std::sys::backtrace::_print_fmt::hde0a62ded68798e9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x573b5a375042 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h93773fc827e3113d
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x573b5a3851fa - core::fmt::rt::Argument::fmt::h01eff69902dad97f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x573b5a3851fa - core::fmt::write::hed7b5c73d82ecb7c
[INFO] [stdout]    6:     0x573b5a343d86 - std::io::default_write_fmt::h2f696ff5b8bbaa4b
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x573b5a343d86 - std::io::Write::write_fmt::h5e66814db8a9cfce
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x573b5a354529 - std::sys::backtrace::BacktraceLock::print::h8b1d6fcc5a56d1a3
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x573b5a354529 - std::panicking::default_hook::{{closure}}::h2be84df4f189ae36
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x573b5a3543c1 - std::panicking::default_hook::hf0ea8939246f43a9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x573b5a318a6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h02d35e3888986252
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x573b5a318a6e - test::test_main_with_exit_callback::{{closure}}::h939640a27d647173
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x573b5a3547a2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hc9df09ff391af3e7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x573b5a3547a2 - std::panicking::panic_with_hook::hb4bd9ac1123582a0
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x573b5a3545e8 - std::panicking::panic_handler::{{closure}}::hde00dd15f5637fe2
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x573b5a34fb79 - std::sys::backtrace::__rust_end_short_backtrace::hb72197fa777c1785
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x573b5a338bbd - __rustc[4425a7e20b4c8619]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x573b5a38c8fc - core::panicking::panic_fmt::ha59b517dd231f4da
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x573b5a38c7b3 - core::panicking::assert_failed_inner::h3c3301979dc81b81
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x573b5a2f5a8d - core::panicking::assert_failed::h30faa8f2f6afd463
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x573b5a2f6ab8 - leest::worked_problems::top_k_frequent_elements::tests::working::h7e38ff757d707a45
[INFO] [stdout]                                at /opt/rustwide/workdir/src/worked_problems/top_k_frequent_elements.rs:43:9
[INFO] [stdout]   22:     0x573b5a2f6d27 - leest::worked_problems::top_k_frequent_elements::tests::working::{{closure}}::h7a10382f34bb9c52
[INFO] [stdout]                                at /opt/rustwide/workdir/src/worked_problems/top_k_frequent_elements.rs:42:17
[INFO] [stdout]   23:     0x573b5a2f4a46 - core::ops::function::FnOnce::call_once::he346a17cc8a9d391
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x573b5a31882b - core::ops::function::FnOnce::call_once::hddb3cd395c36bfbb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x573b5a31882b - test::__rust_begin_short_backtrace::h0b6a7601d9750bfa
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x573b5a32c23a - test::run_test_in_process::{{closure}}::h444209903f00b347
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x573b5a32c23a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfb3ba8f46e537649
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x573b5a32c23a - std::panicking::catch_unwind::do_call::h1672a45911fcf9dc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x573b5a32c23a - std::panicking::catch_unwind::h0fadaee22787a6dd
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x573b5a32c23a - std::panic::catch_unwind::hc47ad190f2c8e188
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x573b5a32c23a - test::run_test_in_process::hcd7faaf934f29999
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x573b5a32c23a - test::run_test::{{closure}}::hddc4550da4871867
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x573b5a306694 - test::run_test::{{closure}}::h98ae26689f13ed94
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x573b5a306694 - std::sys::backtrace::__rust_begin_short_backtrace::h3ec4d1f21ad44588
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x573b5a30a032 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd8bf2c73d479939f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x573b5a30a032 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h3b4248f358af2491
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x573b5a30a032 - std::panicking::catch_unwind::do_call::hda10a64f4b8daebe
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x573b5a30a032 - std::panicking::catch_unwind::h659e5ee8336ec8c7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x573b5a30a032 - std::panic::catch_unwind::h9d4d66a538912c18
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x573b5a30a032 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h7557906bb51d79f1
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x573b5a30a032 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9e460d1d7fc83d35
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x573b5a34ae0f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h61282da819d64ea9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x573b5a34ae0f - std::sys::thread::unix::Thread::new::thread_start::h982f9ea829d1b5fb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x731879378aa4 - <unknown>
[INFO] [stdout]   45:     0x731879405a64 - clone
[INFO] [stdout]   46:                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 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin leest`
[INFO] running `Command { std: "docker" "inspect" "d1289595a2a4337cf14f4f705e7fb2320fe7ab0227389b28982e74edf0e8d51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1289595a2a4337cf14f4f705e7fb2320fe7ab0227389b28982e74edf0e8d51d", kill_on_drop: false }`
[INFO] [stdout] d1289595a2a4337cf14f4f705e7fb2320fe7ab0227389b28982e74edf0e8d51d
