[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] testing satanson/rust_etudes against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/satanson/rust_etudes on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-14/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: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 63e42ede95ecbffcb9fb0200c5e47b4ed536193159e9342ec2badf16695d0250
[INFO] running `Command { std: "docker" "start" "-a" "63e42ede95ecbffcb9fb0200c5e47b4ed536193159e9342ec2badf16695d0250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63e42ede95ecbffcb9fb0200c5e47b4ed536193159e9342ec2badf16695d0250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63e42ede95ecbffcb9fb0200c5e47b4ed536193159e9342ec2badf16695d0250", kill_on_drop: false }`
[INFO] [stdout] 63e42ede95ecbffcb9fb0200c5e47b4ed536193159e9342ec2badf16695d0250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7153e81c482ff8b45e366a1585902770404b9bbc677d22ec5efaa9ca3bec554
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7153e81c482ff8b45e366a1585902770404b9bbc677d22ec5efaa9ca3bec554", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]    Compiling n044_Wildcard_Matching v0.1.0 (/opt/rustwide/workdir/n044_Wildcard_Matching)
[INFO] [stderr]    Compiling n050_Pow_x_n v0.1.0 (/opt/rustwide/workdir/n050_Pow_x_n)
[INFO] [stderr]    Compiling n018_4Sum v0.1.0 (/opt/rustwide/workdir/n018_4Sum)
[INFO] [stderr]    Compiling n038_Count_and_Say v0.1.0 (/opt/rustwide/workdir/n038_Count_and_Say)
[INFO] [stderr]    Compiling n047_Permutations_II v0.1.0 (/opt/rustwide/workdir/n047_Permutations_II)
[INFO] [stderr]    Compiling Longest_Palindromic_Substring v0.1.0 (/opt/rustwide/workdir/Longest_Palindromic_Substring)
[INFO] [stderr]    Compiling add_two_numbers v0.1.0 (/opt/rustwide/workdir/add_two_numbers)
[INFO] [stderr]    Compiling n016_3Sum_Closest v0.1.0 (/opt/rustwide/workdir/n016_3Sum_Closest)
[INFO] [stderr]    Compiling n042_Trapping_Rain_Water v0.1.0 (/opt/rustwide/workdir/n042_Trapping_Rain_Water)
[INFO] [stderr]    Compiling n035_Search_Insert_Position v0.1.0 (/opt/rustwide/workdir/n035_Search_Insert_Position)
[INFO] [stderr]    Compiling n048_Rotate_Image v0.1.0 (/opt/rustwide/workdir/n048_Rotate_Image)
[INFO] [stderr]    Compiling n040_Combination_Sum_II v0.1.0 (/opt/rustwide/workdir/n040_Combination_Sum_II)
[INFO] [stderr]    Compiling n033_Search_in_Rotated_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n033_Search_in_Rotated_Sorted_Array)
[INFO] [stderr]    Compiling n031_Next_Permutation v0.1.0 (/opt/rustwide/workdir/n031_Next_Permutation)
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n048_Rotate_Image` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n048_rotate_image`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n031_Next_Permutation` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n031_next_permutation`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> n018_4Sum/src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread,time};
[INFO] [stdout]   |           ^^^^^^ ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] warning: crate `n050_Pow_x_n` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n050_pow_x_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lcs`
[INFO] [stdout]  --> Longest_Palindromic_Substring/src/main.rs:4:10
[INFO] [stdout]   |
[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: crate `Longest_Palindromic_Substring` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `longest_palindromic_substring`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n040_Combination_Sum_II` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n040_combination_sum_ii`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n042_Trapping_Rain_Water` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n042_trapping_rain_water`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n018_4Sum` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n018_4_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n016_3Sum_Closest` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n016_3_sum_closest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]    --> n038_Count_and_Say/src/main.rs:39:7
[INFO] [stdout]     |
[INFO] [stdout] 39  |   use std::iter::Iterator;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n035_Search_Insert_Position` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n035_search_insert_position`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n047_Permutations_II` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n047_permutations_ii`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n044_Wildcard_Matching` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n044_wildcard_matching`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> n038_Count_and_Say/src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (mut a, mut b) = (&mut s, &mut s2);
[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]   --> n038_Count_and_Say/src/main.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (mut a, mut b) = (&mut s, &mut s2);
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n038_Count_and_Say` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n038_count_and_say`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> add_two_numbers/src/main.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 |   fn new(val: i32) -> Self {
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n033_Search_in_Rotated_Sorted_Array` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n033_search_in_rotated_sorted_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vec2List` should have a snake case name
[INFO] [stdout]   --> add_two_numbers/src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn vec2List(vals: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `vec2_list`
[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]    Compiling n022_Generate_Parentheses v0.1.0 (/opt/rustwide/workdir/n022_Generate_Parentheses)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling Regular_Expression_Matching v0.1.0 (/opt/rustwide/workdir/Regular_Expression_Matching)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling n012_Integer_to_Roman v0.1.0 (/opt/rustwide/workdir/n012_Integer_to_Roman)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling Longest_Substring_Without_Repeating_Characters v0.1.0 (/opt/rustwide/workdir/Longest_Substring_Without_Repeating_Characters)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling n028_Implement_strStr v0.1.0 (/opt/rustwide/workdir/n028_Implement_strStr)
[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: crate `Regular_Expression_Matching` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `regular_expression_matching`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling etudes v0.1.0 (/opt/rustwide/workdir/etudes)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling conditional_compiling v0.1.0 (/opt/rustwide/workdir/conditional_compiling)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling String_to_Integer v0.1.0 (/opt/rustwide/workdir/String_to_Integer)
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling n029_Divide_Two_Integers v0.1.0 (/opt/rustwide/workdir/n029_Divide_Two_Integers)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling Median_of_Two_Sorted_Arrays v0.1.0 (/opt/rustwide/workdir/Median_of_Two_Sorted_Arrays)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling n030_Substring_with_Concatenation_of_All_Words v0.1.0 (/opt/rustwide/workdir/n030_Substring_with_Concatenation_of_All_Words)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling Reverse_Integer v0.1.0 (/opt/rustwide/workdir/Reverse_Integer)
[INFO] [stderr]    Compiling n051_N_Queens v0.1.0 (/opt/rustwide/workdir/n051_N_Queens)
[INFO] [stderr]    Compiling n027_Remove_Element v0.1.0 (/opt/rustwide/workdir/n027_Remove_Element)
[INFO] [stdout] warning: crate `n012_Integer_to_Roman` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n012_integer_to_roman`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> Longest_Substring_Without_Repeating_Characters/src/main.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let s1 = "abcdefg";
[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] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> Longest_Substring_Without_Repeating_Characters/src/main.rs:45:7
[INFO] [stdout]    |
[INFO] [stdout] 45 |   let s2 = "aaaaaaa";
[INFO] [stdout]    |       ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> Longest_Substring_Without_Repeating_Characters/src/main.rs:46:7
[INFO] [stdout]    |
[INFO] [stdout] 46 |   let s3 = "abcdaabc";
[INFO] [stdout]    |       ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Longest_Substring_Without_Repeating_Characters` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `longest_substring_without_repeating_characters`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n022_Generate_Parentheses` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n022_generate_parentheses`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n028_Implement_strStr` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n028_implement_str_str`
[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]     = note: `#[warn(bare_trait_objects)]` on by default
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 153 -   let a: &TraitA = &StructA {};
[INFO] [stdout] 153 +   let a: &dyn TraitA = &StructA {};
[INFO] [stdout]     | 
[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: 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: crate `Median_of_Two_Sorted_Arrays` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `median_of_two_sorted_arrays`
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] warning: crate `String_to_Integer` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `string_to_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n030_Substring_with_Concatenation_of_All_Words` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n030_substring_with_concatenation_of_all_words`
[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] 
[INFO] [stdout] warning: constant is never used: `i32_max`
[INFO] [stdout]   --> Reverse_Integer/src/main.rs:45:5
[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 is never used: `i32_min`
[INFO] [stdout]   --> Reverse_Integer/src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     const i32_min: i32 = std::i32::MIN;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Reverse_Integer` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `reverse_integer`
[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] [stderr]    Compiling n049_Group_Anagrams v0.1.0 (/opt/rustwide/workdir/n049_Group_Anagrams)
[INFO] [stdout] warning: crate `n027_Remove_Element` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n027_remove_element`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n029_Divide_Two_Integers` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n029_divide_two_integers`
[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] 4 | struct StkElm {
[INFO] [stdout]   |              - help: you might be missing a type parameter: `<Pair>`
[INFO] [stdout] 5 |   pos: Pos,
[INFO] [stdout] 6 |   alternatives: Vec<Pair>
[INFO] [stdout]   |                     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling n011_Container_With_Most_Water v0.1.0 (/opt/rustwide/workdir/n011_Container_With_Most_Water)
[INFO] [stdout] error: aborting due to 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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n049_Group_Anagrams` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n049_group_anagrams`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `n011_Container_With_Most_Water` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `n011_container_with_most_water`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7153e81c482ff8b45e366a1585902770404b9bbc677d22ec5efaa9ca3bec554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7153e81c482ff8b45e366a1585902770404b9bbc677d22ec5efaa9ca3bec554", kill_on_drop: false }`
[INFO] [stdout] f7153e81c482ff8b45e366a1585902770404b9bbc677d22ec5efaa9ca3bec554