[INFO] cloning repository https://github.com/satanson/rust_etudes [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/satanson/rust_etudes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0501fe82134be8ab3428a96b7818367e4bb95d77 [INFO] checking satanson/rust_etudes against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/satanson/rust_etudes on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/satanson/rust_etudes [INFO] finished tweaking git repo https://github.com/satanson/rust_etudes [INFO] tweaked toml for git repo https://github.com/satanson/rust_etudes written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/satanson/rust_etudes 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 86e901cb4b783665895353800c849a738c0593b21888542fa1348c4772c3f4bb [INFO] running `Command { std: "docker" "start" "-a" "86e901cb4b783665895353800c849a738c0593b21888542fa1348c4772c3f4bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "86e901cb4b783665895353800c849a738c0593b21888542fa1348c4772c3f4bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86e901cb4b783665895353800c849a738c0593b21888542fa1348c4772c3f4bb", kill_on_drop: false }` [INFO] [stdout] 86e901cb4b783665895353800c849a738c0593b21888542fa1348c4772c3f4bb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 94863f917fd6981a7bef104eac6b80c5fa8e263acf3c32ed01c311fb4a1aee76 [INFO] running `Command { std: "docker" "start" "-a" "94863f917fd6981a7bef104eac6b80c5fa8e263acf3c32ed01c311fb4a1aee76", kill_on_drop: false }` [INFO] [stderr] Checking common v0.1.0 (/opt/rustwide/workdir/common) [INFO] [stderr] Compiling my_proc_macro v1.0.0 (/opt/rustwide/workdir/my_proc_macro) [INFO] [stderr] Checking etudes v0.1.0 (/opt/rustwide/workdir/etudes) [INFO] [stderr] Checking n030_Substring_with_Concatenation_of_All_Words v0.1.0 (/opt/rustwide/workdir/n030_Substring_with_Concatenation_of_All_Words) [INFO] [stderr] Checking Longest_Palindromic_Substring v0.1.0 (/opt/rustwide/workdir/Longest_Palindromic_Substring) [INFO] [stderr] Checking n026_Remove_Duplicates_from_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n026_Remove_Duplicates_from_Sorted_Array) [INFO] [stderr] Checking n045_Jump_Game_II v0.1.0 (/opt/rustwide/workdir/n045_Jump_Game_II) [INFO] [stderr] Checking n044_Wildcard_Matching v0.1.0 (/opt/rustwide/workdir/n044_Wildcard_Matching) [INFO] [stderr] Checking n050_Pow_x_n v0.1.0 (/opt/rustwide/workdir/n050_Pow_x_n) [INFO] [stderr] Checking Regular_Expression_Matching v0.1.0 (/opt/rustwide/workdir/Regular_Expression_Matching) [INFO] [stderr] Checking Palindrome_Number v0.1.0 (/opt/rustwide/workdir/Palindrome_Number) [INFO] [stderr] Checking n011_Container_With_Most_Water v0.1.0 (/opt/rustwide/workdir/n011_Container_With_Most_Water) [INFO] [stderr] Checking n031_Next_Permutation v0.1.0 (/opt/rustwide/workdir/n031_Next_Permutation) [INFO] [stderr] Checking n040_Combination_Sum_II v0.1.0 (/opt/rustwide/workdir/n040_Combination_Sum_II) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> common/src/lib.rs:62:12 [INFO] [stdout] | [INFO] [stdout] 62 | '1'...'9' => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> Regular_Expression_Matching/src/main.rs:79:5 [INFO] [stdout] | [INFO] [stdout] 53 | return false; [INFO] [stdout] | ------------ any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 79 | return false; [INFO] [stdout] | ^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> n026_Remove_Duplicates_from_Sorted_Array/src/main.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 24 | return (i+1) as i32; [INFO] [stdout] | ------------------- any code following this expression is unreachable [INFO] [stdout] 25 | return 0; [INFO] [stdout] | ^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> etudes/src/util/mod.rs:153:11 [INFO] [stdout] | [INFO] [stdout] 153 | let a: &TraitA = &StructA {}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 153 | let a: &dyn TraitA = &StructA {}; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `L` should have a snake case name [INFO] [stdout] --> n030_Substring_with_Concatenation_of_All_Words/src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let L = l * m; [INFO] [stdout] | ^ help: convert the identifier to snake case: `l` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking Reverse_Integer v0.1.0 (/opt/rustwide/workdir/Reverse_Integer) [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> Longest_Palindromic_Substring/src/main.rs:82:7 [INFO] [stdout] | [INFO] [stdout] 82 | let s1 = String::from("eabaf"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n027_Remove_Element v0.1.0 (/opt/rustwide/workdir/n027_Remove_Element) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `lcs` is never used [INFO] [stdout] --> Longest_Palindromic_Substring/src/main.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 3 | impl Solution { [INFO] [stdout] | ------------- associated function in this implementation [INFO] [stdout] 4 | pub fn lcs(s1: &String, s2: &String) -> (usize, usize) { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n041_First_Missing_Positive v0.1.0 (/opt/rustwide/workdir/n041_First_Missing_Positive) [INFO] [stderr] Checking two_sum v0.1.0 (/opt/rustwide/workdir/two_sum) [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n043_Multiply_Strings v0.1.0 (/opt/rustwide/workdir/n043_Multiply_Strings) [INFO] [stderr] Checking Median_of_Two_Sorted_Arrays v0.1.0 (/opt/rustwide/workdir/Median_of_Two_Sorted_Arrays) [INFO] [stderr] Checking n016_3Sum_Closest v0.1.0 (/opt/rustwide/workdir/n016_3Sum_Closest) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> etudes/src/util/mod.rs:124:7 [INFO] [stdout] | [INFO] [stdout] 124 | let mut a = Wrapper(&s); [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: `a` [INFO] [stdout] --> etudes/src/util/mod.rs:153:7 [INFO] [stdout] | [INFO] [stdout] 153 | let a: &TraitA = &StructA {}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `TraitB` is never used [INFO] [stdout] --> etudes/src/util/mod.rs:144:7 [INFO] [stdout] | [INFO] [stdout] 144 | trait TraitB: Sized {} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n051_N_Queens v0.1.0 (/opt/rustwide/workdir/n051_N_Queens) [INFO] [stderr] Checking n032_Longest_Valid_Parentheses v0.1.0 (/opt/rustwide/workdir/n032_Longest_Valid_Parentheses) [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> Regular_Expression_Matching/src/main.rs:79:5 [INFO] [stdout] | [INFO] [stdout] 53 | return false; [INFO] [stdout] | ------------ any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 79 | return false; [INFO] [stdout] | ^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Vec` is imported redundantly [INFO] [stdout] --> two_sum/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use ::std::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Vec` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n019_Remove_Nth_Node_From_End_of_List v0.1.0 (/opt/rustwide/workdir/n019_Remove_Nth_Node_From_End_of_List) [INFO] [stdout] warning: constant `i32_max` is never used [INFO] [stdout] --> Reverse_Integer/src/main.rs:45:11 [INFO] [stdout] | [INFO] [stdout] 45 | const i32_max: i32 = std::i32::MAX; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i32_min` is never used [INFO] [stdout] --> Reverse_Integer/src/main.rs:46:11 [INFO] [stdout] | [INFO] [stdout] 46 | const i32_min: i32 = std::i32::MIN; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i32_max` should have an upper case name [INFO] [stdout] --> Reverse_Integer/src/main.rs:6:11 [INFO] [stdout] | [INFO] [stdout] 6 | const i32_max: i32 = std::i32::MAX; [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper case: `I32_MAX` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i32_min` should have an upper case name [INFO] [stdout] --> Reverse_Integer/src/main.rs:26:11 [INFO] [stdout] | [INFO] [stdout] 26 | const i32_min: i32 = std::i32::MIN; [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper case: `I32_MIN` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i32_max` should have an upper case name [INFO] [stdout] --> Reverse_Integer/src/main.rs:45:11 [INFO] [stdout] | [INFO] [stdout] 45 | const i32_max: i32 = std::i32::MAX; [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper case: `I32_MAX` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i32_min` should have an upper case name [INFO] [stdout] --> Reverse_Integer/src/main.rs:46:11 [INFO] [stdout] | [INFO] [stdout] 46 | const i32_min: i32 = std::i32::MIN; [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper case: `I32_MIN` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `max_i` is assigned to, but never used [INFO] [stdout] --> n041_First_Missing_Positive/src/main.rs:6:25 [INFO] [stdout] | [INFO] [stdout] 6 | let (mut min_i, mut max_i) = (0usize, 0usize); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_max_i` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `max_i` is never read [INFO] [stdout] --> n041_First_Missing_Positive/src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | max_i = i; [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> n032_Longest_Valid_Parentheses/src/main.rs:18:17 [INFO] [stdout] | [INFO] [stdout] 18 | (Some(&(k, 'M')), ')') => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n025_Reverse_Nodes_in_k_Group v0.1.0 (/opt/rustwide/workdir/n025_Reverse_Nodes_in_k_Group) [INFO] [stdout] warning: comparison is useless due to type limits [INFO] [stdout] --> Median_of_Two_Sorted_Arrays/src/main.rs:11:16 [INFO] [stdout] | [INFO] [stdout] 11 | assert_eq!(0 <= k && k < a_len + b_len, true); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_comparisons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n021_Merge_Two_Sorted_Lists v0.1.0 (/opt/rustwide/workdir/n021_Merge_Two_Sorted_Lists) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> n043_Multiply_Strings/src/main.rs:25:11 [INFO] [stdout] | [INFO] [stdout] 25 | let mut m = k + a.len(); [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: variable does not need to be mutable [INFO] [stdout] --> n032_Longest_Valid_Parentheses/src/main.rs:12:15 [INFO] [stdout] | [INFO] [stdout] 12 | let mut tmp = i + 1 - j; [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: variable does not need to be mutable [INFO] [stdout] --> n032_Longest_Valid_Parentheses/src/main.rs:23:19 [INFO] [stdout] | [INFO] [stdout] 23 | let mut tmp = i + 1 - l; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Pair` in this scope [INFO] [stdout] --> n051_N_Queens/src/main.rs:6:21 [INFO] [stdout] | [INFO] [stdout] 6 | alternatives: Vec [INFO] [stdout] | ^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: you might be missing a type parameter [INFO] [stdout] | [INFO] [stdout] 4 | struct StkElm { [INFO] [stdout] | ++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n036_Valid_Sudoku v0.1.0 (/opt/rustwide/workdir/n036_Valid_Sudoku) [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n023_Merge_k_Sorted_Lists v0.1.0 (/opt/rustwide/workdir/n023_Merge_k_Sorted_Lists) [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n024_Swap_Nodes_in_Pairs v0.1.0 (/opt/rustwide/workdir/n024_Swap_Nodes_in_Pairs) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking n037_Sudoku_Solver v0.1.0 (/opt/rustwide/workdir/n037_Sudoku_Solver) [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0412`. [INFO] [stdout] [INFO] [stderr] error: could not compile `n051_N_Queens` (bin "n051_N_Queens" test) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `l` [INFO] [stdout] --> n019_Remove_Nth_Node_From_End_of_List/src/main.rs:38:7 [INFO] [stdout] | [INFO] [stdout] 38 | let l = ListNode::from(vec!(1,3,4,5,2)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_l` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `PartialEq` is imported redundantly [INFO] [stdout] --> n023_Merge_k_Sorted_Lists/src/main.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp::{PartialEq, Ord, Ordering}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `PartialEq` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> n023_Merge_k_Sorted_Lists/src/main.rs:10:27 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp::{PartialEq, Ord, Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Ord` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> n036_Valid_Sudoku/src/main.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | '1'...'9' => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `l` [INFO] [stdout] --> n019_Remove_Nth_Node_From_End_of_List/src/main.rs:38:7 [INFO] [stdout] | [INFO] [stdout] 38 | let l = ListNode::from(vec!(1,3,4,5,2)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_l` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `PartialEq` is imported redundantly [INFO] [stdout] --> n023_Merge_k_Sorted_Lists/src/main.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp::{PartialEq, Ord, Ordering}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `PartialEq` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Ord` is imported redundantly [INFO] [stdout] --> n023_Merge_k_Sorted_Lists/src/main.rs:10:27 [INFO] [stdout] | [INFO] [stdout] 10 | use std::cmp::{PartialEq, Ord, Ordering}; [INFO] [stdout] | ^^^ [INFO] [stdout] --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Ord` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:72:18 [INFO] [stdout] | [INFO] [stdout] 72 | '0'...'9' => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::BinaryHeap` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:81:11 [INFO] [stdout] | [INFO] [stdout] 81 | use std::collections::BinaryHeap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b0` [INFO] [stdout] --> n036_Valid_Sudoku/src/main.rs:79:7 [INFO] [stdout] | [INFO] [stdout] 79 | let b0: Vec> = sudoku::sudoku_from(b0); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b1` [INFO] [stdout] --> n036_Valid_Sudoku/src/main.rs:92:7 [INFO] [stdout] | [INFO] [stdout] 92 | let b1: Vec> = sudoku::sudoku_from(b1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b2` [INFO] [stdout] --> n036_Valid_Sudoku/src/main.rs:106:7 [INFO] [stdout] | [INFO] [stdout] 106 | let b2: Vec> = sudoku::sudoku_from(b2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:72:18 [INFO] [stdout] | [INFO] [stdout] 72 | '0'...'9' => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::BinaryHeap` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:81:11 [INFO] [stdout] | [INFO] [stdout] 81 | use std::collections::BinaryHeap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b3` [INFO] [stdout] --> n036_Valid_Sudoku/src/main.rs:118:7 [INFO] [stdout] | [INFO] [stdout] 118 | let b3 = b3.iter().map(|&x|x.iter().map(|x|*x).collect::>()).collect::>>(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b0` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:197:11 [INFO] [stdout] | [INFO] [stdout] 197 | let mut b0 = sudoku_from(b0); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b1` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:198:11 [INFO] [stdout] | [INFO] [stdout] 198 | let mut b1 = sudoku_from(b1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:197:7 [INFO] [stdout] | [INFO] [stdout] 197 | let mut b0 = sudoku_from(b0); [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: variable does not need to be mutable [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:198:7 [INFO] [stdout] | [INFO] [stdout] 198 | let mut b1 = sudoku_from(b1); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b0` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:197:11 [INFO] [stdout] | [INFO] [stdout] 197 | let mut b0 = sudoku_from(b0); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b1` [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:198:11 [INFO] [stdout] | [INFO] [stdout] 198 | let mut b1 = sudoku_from(b1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_b1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:197:7 [INFO] [stdout] | [INFO] [stdout] 197 | let mut b0 = sudoku_from(b0); [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: variable does not need to be mutable [INFO] [stdout] --> n037_Sudoku_Solver/src/main.rs:198:7 [INFO] [stdout] | [INFO] [stdout] 198 | let mut b1 = sudoku_from(b1); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "94863f917fd6981a7bef104eac6b80c5fa8e263acf3c32ed01c311fb4a1aee76", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94863f917fd6981a7bef104eac6b80c5fa8e263acf3c32ed01c311fb4a1aee76", kill_on_drop: false }` [INFO] [stdout] 94863f917fd6981a7bef104eac6b80c5fa8e263acf3c32ed01c311fb4a1aee76