[INFO] cloning repository https://github.com/chux0519/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chux0519/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchux0519%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchux0519%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8814290fe1967f9f77e673e9150d89265666e170
[INFO] testing chux0519/leetcode-rust against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchux0519%2Fleetcode-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chux0519/leetcode-rust on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/chux0519/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0be75853aa1e0cc50b458adbb2bb21dfe8a7e9733ab23466abbca835075b345d
[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" "0be75853aa1e0cc50b458adbb2bb21dfe8a7e9733ab23466abbca835075b345d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0be75853aa1e0cc50b458adbb2bb21dfe8a7e9733ab23466abbca835075b345d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0be75853aa1e0cc50b458adbb2bb21dfe8a7e9733ab23466abbca835075b345d", kill_on_drop: false }`
[INFO] [stdout] 0be75853aa1e0cc50b458adbb2bb21dfe8a7e9733ab23466abbca835075b345d
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58628e6f527491d5fb241822b29d38a691b00c5f54729ed552a2ae41c1832f2d
[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" "58628e6f527491d5fb241822b29d38a691b00c5f54729ed552a2ae41c1832f2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q042_trapping_rain_water.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             water += (std::cmp::min(left[i], right[i]) - height[i]);
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q1052_grumpy_bookstore_owner.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                   sum_x += (if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 24 | |                     customers[p + offset]
[INFO] [stdout] 25 | |                 } else {
[INFO] [stdout] 26 | |                     0
[INFO] [stdout] 27 | |                 });
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 sum_x += if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout] 24 |                     customers[p + offset]
[INFO] [stdout] 25 |                 } else {
[INFO] [stdout] 26 |                     0
[INFO] [stdout] 27 |                 };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]   --> src/q110_balanced_binary_tree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::collections::VecDeque;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev` is never read
[INFO] [stdout]   --> src/q025_reverse_nodes_in_k_group.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut prev = None::<Box<ListNode>>;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pos_2` is never read
[INFO] [stdout]  --> src/q043_multiply_strings.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut pos_2 = 0;
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_left` is never read
[INFO] [stdout]  --> src/q048_rotate_image.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut top_left = (0, 0);
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut top_right = (0, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_left` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut bottom_left = (n - 1, 0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bottom_right = (n - 1, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut tmp = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/q048_rotate_image.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             for i in c..n - 1 - c {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_a` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bit_a = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_b` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut bit_b = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut sum = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/q101_symmetric_tree.rs:68:22
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 Some(r) => {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num` is never read
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut num = 0;
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/q067_add_binary.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut n = std::cmp::max(a.len(), b.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: function `toString` should have a snake case name
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn toString(str: &[u8]) -> String {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `to_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "58628e6f527491d5fb241822b29d38a691b00c5f54729ed552a2ae41c1832f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58628e6f527491d5fb241822b29d38a691b00c5f54729ed552a2ae41c1832f2d", kill_on_drop: false }`
[INFO] [stdout] 58628e6f527491d5fb241822b29d38a691b00c5f54729ed552a2ae41c1832f2d
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8303781dfd2be974017c78a860a80a64ed371321ccbd21508ef9052954a6d24a
[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" "8303781dfd2be974017c78a860a80a64ed371321ccbd21508ef9052954a6d24a", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q042_trapping_rain_water.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             water += (std::cmp::min(left[i], right[i]) - height[i]);
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q1052_grumpy_bookstore_owner.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                   sum_x += (if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 24 | |                     customers[p + offset]
[INFO] [stdout] 25 | |                 } else {
[INFO] [stdout] 26 | |                     0
[INFO] [stdout] 27 | |                 });
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 sum_x += if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout] 24 |                     customers[p + offset]
[INFO] [stdout] 25 |                 } else {
[INFO] [stdout] 26 |                     0
[INFO] [stdout] 27 |                 };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]   --> src/q110_balanced_binary_tree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::collections::VecDeque;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev` is never read
[INFO] [stdout]   --> src/q025_reverse_nodes_in_k_group.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut prev = None::<Box<ListNode>>;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pos_2` is never read
[INFO] [stdout]  --> src/q043_multiply_strings.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut pos_2 = 0;
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_left` is never read
[INFO] [stdout]  --> src/q048_rotate_image.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut top_left = (0, 0);
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut top_right = (0, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_left` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut bottom_left = (n - 1, 0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bottom_right = (n - 1, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut tmp = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/q048_rotate_image.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             for i in c..n - 1 - c {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_a` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bit_a = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_b` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut bit_b = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut sum = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/q101_symmetric_tree.rs:68:22
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 Some(r) => {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num` is never read
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut num = 0;
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/q067_add_binary.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut n = std::cmp::max(a.len(), b.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: function `toString` should have a snake case name
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn toString(str: &[u8]) -> String {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `to_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q042_trapping_rain_water.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             water += (std::cmp::min(left[i], right[i]) - height[i]);
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/q1052_grumpy_bookstore_owner.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                   sum_x += (if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 24 | |                     customers[p + offset]
[INFO] [stdout] 25 | |                 } else {
[INFO] [stdout] 26 | |                     0
[INFO] [stdout] 27 | |                 });
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 sum_x += if (p + offset < len) && grumpy[p + offset] == 1 {
[INFO] [stdout] 24 |                     customers[p + offset]
[INFO] [stdout] 25 |                 } else {
[INFO] [stdout] 26 |                     0
[INFO] [stdout] 27 |                 };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Solution`
[INFO] [stdout]   --> src/q1054_distant_barcodes.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     use super::Solution;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]   --> src/q110_balanced_binary_tree.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use std::collections::VecDeque;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prev` is never read
[INFO] [stdout]   --> src/q025_reverse_nodes_in_k_group.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut prev = None::<Box<ListNode>>;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pos_2` is never read
[INFO] [stdout]  --> src/q043_multiply_strings.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut pos_2 = 0;
[INFO] [stdout]   |             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_left` is never read
[INFO] [stdout]  --> src/q048_rotate_image.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let mut top_left = (0, 0);
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut top_right = (0, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_left` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut bottom_left = (n - 1, 0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bottom_right` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bottom_right = (n - 1, n - 1);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]   --> src/q048_rotate_image.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut tmp = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/q048_rotate_image.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |             for i in c..n - 1 - c {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_a` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut bit_a = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bit_b` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut bit_b = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> src/q067_add_binary.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut sum = 0;
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/q101_symmetric_tree.rs:68:22
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 Some(r) => {
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num` is never read
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut num = 0;
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/q067_add_binary.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut n = std::cmp::max(a.len(), b.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: function `toString` should have a snake case name
[INFO] [stdout]   --> src/q1048_longest_string_chain.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn toString(str: &[u8]) -> String {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `to_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.02s
[INFO] running `Command { std: "docker" "inspect" "8303781dfd2be974017c78a860a80a64ed371321ccbd21508ef9052954a6d24a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8303781dfd2be974017c78a860a80a64ed371321ccbd21508ef9052954a6d24a", kill_on_drop: false }`
[INFO] [stdout] 8303781dfd2be974017c78a860a80a64ed371321ccbd21508ef9052954a6d24a
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 53e308e0233bbad7481feab9d17b4bb8c96807272d60b51ca1e7472e9add4be8
[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" "53e308e0233bbad7481feab9d17b4bb8c96807272d60b51ca1e7472e9add4be8", kill_on_drop: false }`
[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: 19 warnings emitted
[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: `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: 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]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_rust-2606e27a8b22ac82
[INFO] [stdout] 
[INFO] [stdout] running 67 tests
[INFO] [stdout] test q024_swap_nodes_in_pairs::tests::q024 ... ok
[INFO] [stdout] test q026_remove_duplicates_from_sorted_array::tests::q026 ... ok
[INFO] [stdout] test q025_reverse_nodes_in_k_group::tests::q025 ... ok
[INFO] [stdout] test q028_implement_strstr::tests::q028 ... ok
[INFO] [stdout] test q027_remove_element::tests::q027 ... ok
[INFO] [stdout] test q023_merge_k_lists::tests::q023_merge_two ... ok
[INFO] [stdout] test q031_next_permutation::tests::q031 ... ok
[INFO] [stdout] test q001_two_sum::tests::q001 ... ok
[INFO] [stdout] test q029_divide_two_integers::tests::q029 ... ok
[INFO] [stdout] test q023_merge_k_lists::tests::q023 ... ok
[INFO] [stdout] test q034_find_first_and_last_position_of_element_in_sorted_array::tests::q034 ... ok
[INFO] [stdout] test q033_search_in_rotated_sorted_array::tests::q033 ... ok
[INFO] [stdout] test q035_search_insert_position::tests::q035 ... ok
[INFO] [stdout] test q032_longest_valid_parentheses::tests::q032 ... ok
[INFO] [stdout] test q046_permutations::tests::q046 ... ok
[INFO] [stdout] test q0416_partition_equal_subset_sum::tests::q0416 ... ok
[INFO] [stdout] test q070_climbing_stairs::tests::q070 ... ok
[INFO] [stdout] test q088_merge_sorted_array::tests::q088 ... ok
[INFO] [stdout] test q038_count_and_say::tests::q038 ... ok
[INFO] [stdout] test q040_combination_sum_ii::tests::q040 ... ok
[INFO] [stdout] test q053_maximum_subarray::tests::q053 ... ok
[INFO] [stdout] test q036_valid_sudoku::tests::q036 ... ok
[INFO] [stdout] test q042_trapping_rain_water::tests::q042 ... ok
[INFO] [stdout] test q039_combination_sum::tests::q039 ... ok
[INFO] [stdout] test q102_binary_tree_level_order_traversal::tests::q102 ... ok
[INFO] [stdout] test q041_first_missing_positive::tests::q041 ... ok
[INFO] [stdout] test q067_add_binary::tests::q067 ... ok
[INFO] [stdout] test q101_symmetric_tree::tests::q101 ... ok
[INFO] [stdout] test q043_multiply_strings::tests::q048 ... ok
[INFO] [stdout] test q066_plus_one::tests::q066 ... ok
[INFO] [stdout] test q047_permutations_ii::tests::q047 ... ok
[INFO] [stdout] test q058_length_of_last_word::tests::q058 ... ok
[INFO] [stdout] test q048_rotate_image::tests::q048 ... ok
[INFO] [stdout] test q100_same_tree::tests::q100 ... ok
[INFO] [stdout] test q107_binary_tree_level_order_traversal_ii::tests::q107 ... ok
[INFO] [stdout] test q1073_adding_two_negabinary_numbers::tests::q1073 ... ok
[INFO] [stdout] test q1072_flip_columns_for_maximum_number_of_equal_rows::tests::q1072 ... ok
[INFO] [stdout] test q110_balanced_binary_tree::tests::q110 ... ok
[INFO] [stdout] test q111_minimum_depth_of_binary_tree::tests::q111 ... ok
[INFO] [stdout] test q118_pascals_triangle::tests::q118 ... ok
[INFO] [stdout] test q119_pascals_triangle_ii::tests::q119 ... ok
[INFO] [stdout] test q121_best_time_to_buy_and_sell_stock::tests::q121 ... ok
[INFO] [stdout] test q122_best_time_to_buy_and_sell_stock_ii::tests::q122 ... ok
[INFO] [stdout] test q125_valid_palindrome::tests::q125 ... ok
[INFO] [stdout] test q126_word_ladder_ii::tests::q126 ... ok
[INFO] [stdout] test q1051_height_checker::tests::q1051 ... ok
[INFO] [stdout] test q1071_greatest_common_divisor_of_strings::tests::q1071 ... ok
[INFO] [stdout] test q1046_last_stone_weight::tests::q1046 ... ok
[INFO] [stdout] test q1047_remove_all_adjacent_duplicates_in_string::tests::q1047 ... ok
[INFO] [stdout] test q1033_moving_stones_until_consecutive::tests::q1033 ... ok
[INFO] [stdout] test q1054_distant_barcodes::tests::q1054 ... ok
[INFO] [stdout] test q1052_grumpy_bookstore_owner::tests::q1052 ... ok
[INFO] [stdout] test q1048_longest_string_chain::tests::q1048 ... ok
[INFO] [stdout] test q1053_previous_permutation_with_one_swap::tests::q1053 ... ok
[INFO] [stdout] test q1049_last_stone_weight_ii::tests::q1049 ... ok
[INFO] [stdout] test q104_maximum_depth_of_binary_tree::tests::q104 ... ok
[INFO] [stdout] test q167_two_sum_ii_input_array_is_sorted::tests::q167 ... ok
[INFO] [stdout] test q103_binary_tree_zigzag_level_order_traversal::tests::q103 ... ok
[INFO] [stdout] test q169_majority_element::tests::q169 ... ok
[INFO] [stdout] test q199_binary_tree_right_side_view::tests::q199 ... ok
[INFO] [stdout] test q136_single_number::tests::q136 ... ok
[INFO] [stdout] test q207_course_schedule::tests::q207 ... ok
[INFO] [stdout] test q200_number_of_islands::tests::q200 ... ok
[INFO] [stdout] test q130_surrounded_regions::tests::q130 ... ok
[INFO] [stdout] test q155_min_stack::tests::q155 ... ok
[INFO] [stdout] test q037_sudoku_solver::tests::q037 ... ok
[INFO] [stderr]    Doc-tests leetcode-rust
[INFO] [stdout] test q127_word_ladder::tests::q127 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 67 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> /opt/rustwide/workdir/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]   --> /opt/rustwide/workdir/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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "53e308e0233bbad7481feab9d17b4bb8c96807272d60b51ca1e7472e9add4be8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53e308e0233bbad7481feab9d17b4bb8c96807272d60b51ca1e7472e9add4be8", kill_on_drop: false }`
[INFO] [stdout] 53e308e0233bbad7481feab9d17b4bb8c96807272d60b51ca1e7472e9add4be8
