[INFO] updating cached repository https://github.com/BurnySc2/leetcode-solutions
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2e1aafc81b7bc334846a2b10d14afafdb9cccca
[INFO] checking BurnySc2/leetcode-solutions against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurnySc2%2Fleetcode-solutions" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BurnySc2/leetcode-solutions on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BurnySc2/leetcode-solutions
[INFO] finished tweaking git repo https://github.com/BurnySc2/leetcode-solutions
[INFO] tweaked toml for git repo https://github.com/BurnySc2/leetcode-solutions written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/BurnySc2/leetcode-solutions already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 66551e6b2887054d8224b00d5a65615d36058cd6f250a356989834e80090a18a
[INFO] running `"docker" "start" "-a" "66551e6b2887054d8224b00d5a65615d36058cd6f250a356989834e80090a18a"`
[INFO] [stderr]     Checking leetcode-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> src/problems/p001_twosum.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |                 if (nums[i] + nums[j] == target) {
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/problems/p007.rs:18:23
[INFO] [stderr]    |
[INFO] [stderr] 18 |             result += ((c as i64 - 48) * (10 as i64).pow(i as u32));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> src/problems/p001_twosum.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |                 if (nums[i] + nums[j] == target) {
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/problems/p007.rs:18:23
[INFO] [stderr]    |
[INFO] [stderr] 18 |             result += ((c as i64 - 48) * (10 as i64).pow(i as u32));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/problems/p007.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut a;
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/problems/p001_twosum.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `two_sum`
[INFO] [stderr]  --> src/problems/p001_twosum.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_001`
[INFO] [stderr]   --> src/problems/p001_twosum.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn run_001() {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/problems/p004.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_median_sorted_arrays`
[INFO] [stderr]  --> src/problems/p004.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_solution`
[INFO] [stderr]   --> src/problems/p004.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn test_solution() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/problems/p004.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_004_01`
[INFO] [stderr]   --> src/problems/p004.rs:54:4
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn run_004_01() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_004_02`
[INFO] [stderr]   --> src/problems/p004.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn run_004_02() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/problems/p007.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reverse`
[INFO] [stderr]  --> src/problems/p007.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn reverse(x: i32) -> i32 {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_007_01`
[INFO] [stderr]   --> src/problems/p007.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn run_007_01() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_007_02`
[INFO] [stderr]   --> src/problems/p007.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn run_007_02() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_007_03`
[INFO] [stderr]   --> src/problems/p007.rs:43:4
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn run_007_03() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/problems/p009.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_palindrome`
[INFO] [stderr]  --> src/problems/p009.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_palindrome(x: i32) -> bool {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/problems/p007.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut a;
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_solution`
[INFO] [stderr]   --> src/problems/p004.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn test_solution() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/problems/p004.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/problems/p009.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_palindrome`
[INFO] [stderr]  --> src/problems/p009.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_palindrome(x: i32) -> bool {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "66551e6b2887054d8224b00d5a65615d36058cd6f250a356989834e80090a18a"`
[INFO] running `"docker" "rm" "-f" "66551e6b2887054d8224b00d5a65615d36058cd6f250a356989834e80090a18a"`
[INFO] [stdout] 66551e6b2887054d8224b00d5a65615d36058cd6f250a356989834e80090a18a