[INFO] updating cached repository https://github.com/chux0519/leetcode-rust
[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] 8814290fe1967f9f77e673e9150d89265666e170
[INFO] checking chux0519/leetcode-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchux0519%2Fleetcode-rust" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chux0519/leetcode-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/chux0519/leetcode-rust
[INFO] finished tweaking git repo https://github.com/chux0519/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/chux0519/leetcode-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/chux0519/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] f0bf7e978c289c4fec0915a804e14866883c57c2ce4e282a49fbe129607401c1
[INFO] running `"docker" "start" "-a" "f0bf7e978c289c4fec0915a804e14866883c57c2ce4e282a49fbe129607401c1"`
[INFO] [stderr]     Checking leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/q042_trapping_rain_water.rs:27:22
[INFO] [stderr]    |
[INFO] [stderr] 27 |             water += (std::cmp::min(left[i], right[i]) - height[i]);
[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/q1052_grumpy_bookstore_owner.rs:23:26
[INFO] [stderr]    |
[INFO] [stderr] 23 |                   sum_x += (if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 24 | |                     customers[p + offset]
[INFO] [stderr] 25 | |                 } else {
[INFO] [stderr] 26 | |                     0
[INFO] [stderr] 27 | |                 });
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 sum_x += if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stderr] 24 |                     customers[p + offset]
[INFO] [stderr] 25 |                 } else {
[INFO] [stderr] 26 |                     0
[INFO] [stderr] 27 |                 };
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]   --> src/q110_balanced_binary_tree.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::collections::VecDeque;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/q042_trapping_rain_water.rs:27:22
[INFO] [stderr]    |
[INFO] [stderr] 27 |             water += (std::cmp::min(left[i], right[i]) - height[i]);
[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/q1052_grumpy_bookstore_owner.rs:23:26
[INFO] [stderr]    |
[INFO] [stderr] 23 |                   sum_x += (if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 24 | |                     customers[p + offset]
[INFO] [stderr] 25 | |                 } else {
[INFO] [stderr] 26 | |                     0
[INFO] [stderr] 27 | |                 });
[INFO] [stderr]    | |__________________^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 sum_x += if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stderr] 24 |                     customers[p + offset]
[INFO] [stderr] 25 |                 } else {
[INFO] [stderr] 26 |                     0
[INFO] [stderr] 27 |                 };
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::Solution`
[INFO] [stderr]   --> src/q1054_distant_barcodes.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |     use super::Solution;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]   --> src/q110_balanced_binary_tree.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::collections::VecDeque;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev` is never read
[INFO] [stderr]   --> src/q025_reverse_nodes_in_k_group.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut prev = None::<Box<ListNode>>;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `pos_2` is never read
[INFO] [stderr]  --> src/q043_multiply_strings.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut pos_2 = 0;
[INFO] [stderr]   |             ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `top_left` is never read
[INFO] [stderr]  --> src/q048_rotate_image.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut top_left = (0, 0);
[INFO] [stderr]   |             ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `top_right` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let mut top_right = (0, n - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bottom_left` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let mut bottom_left = (n - 1, 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bottom_right` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut bottom_right = (n - 1, n - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut tmp = 0;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/q048_rotate_image.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |             for i in c..n - 1 - c {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bit_a` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut bit_a = 0;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bit_b` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut bit_b = 0;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sum` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut sum = 0;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/q101_symmetric_tree.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 Some(r) => {
[INFO] [stderr]    |                      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `num` is never read
[INFO] [stderr]   --> src/q1048_longest_string_chain.rs:17:21
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 let mut num = 0;
[INFO] [stderr]    |                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/q067_add_binary.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut n = std::cmp::max(a.len(), b.len());
[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 `toString` should have a snake case name
[INFO] [stderr]   --> src/q1048_longest_string_chain.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn toString(str: &[u8]) -> String {
[INFO] [stderr]    |    ^^^^^^^^ help: convert the identifier to snake case: `to_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prev` is never read
[INFO] [stderr]   --> src/q025_reverse_nodes_in_k_group.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |             let mut prev = None::<Box<ListNode>>;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `pos_2` is never read
[INFO] [stderr]  --> src/q043_multiply_strings.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut pos_2 = 0;
[INFO] [stderr]   |             ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `top_left` is never read
[INFO] [stderr]  --> src/q048_rotate_image.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut top_left = (0, 0);
[INFO] [stderr]   |             ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `top_right` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let mut top_right = (0, n - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bottom_left` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         let mut bottom_left = (n - 1, 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bottom_right` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut bottom_right = (n - 1, n - 1);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp` is never read
[INFO] [stderr]   --> src/q048_rotate_image.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut tmp = 0;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/q048_rotate_image.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |             for i in c..n - 1 - c {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bit_a` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut bit_a = 0;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `bit_b` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut bit_b = 0;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sum` is never read
[INFO] [stderr]   --> src/q067_add_binary.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut sum = 0;
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/q101_symmetric_tree.rs:68:22
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 Some(r) => {
[INFO] [stderr]    |                      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `num` is never read
[INFO] [stderr]   --> src/q1048_longest_string_chain.rs:17:21
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 let mut num = 0;
[INFO] [stderr]    |                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/q067_add_binary.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let mut n = std::cmp::max(a.len(), b.len());
[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 `toString` should have a snake case name
[INFO] [stderr]   --> src/q1048_longest_string_chain.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn toString(str: &[u8]) -> String {
[INFO] [stderr]    |    ^^^^^^^^ help: convert the identifier to snake case: `to_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `"docker" "inspect" "f0bf7e978c289c4fec0915a804e14866883c57c2ce4e282a49fbe129607401c1"`
[INFO] running `"docker" "rm" "-f" "f0bf7e978c289c4fec0915a804e14866883c57c2ce4e282a49fbe129607401c1"`
[INFO] [stdout] f0bf7e978c289c4fec0915a804e14866883c57c2ce4e282a49fbe129607401c1