[INFO] cloning repository https://github.com/MattCairns/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/MattCairns/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattCairns%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattCairns%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09653bc30f09a84f67f82daae0f5914ee822e234
[INFO] testing MattCairns/leetcode-rust against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattCairns%2Fleetcode-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MattCairns/leetcode-rust
[INFO] finished tweaking git repo https://github.com/MattCairns/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/MattCairns/leetcode-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MattCairns/leetcode-rust on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MattCairns/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9ca5df24fca43bf00a938075e631f7c036575f445bed70fd142990b23e5a3ec
[INFO] running `Command { std: "docker" "start" "-a" "c9ca5df24fca43bf00a938075e631f7c036575f445bed70fd142990b23e5a3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ca5df24fca43bf00a938075e631f7c036575f445bed70fd142990b23e5a3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ca5df24fca43bf00a938075e631f7c036575f445bed70fd142990b23e5a3ec", kill_on_drop: false }`
[INFO] [stdout] c9ca5df24fca43bf00a938075e631f7c036575f445bed70fd142990b23e5a3ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90729cfeab9e627076578801ff0b8373547f3d33eb5320c85a77a8535b820629
[INFO] running `Command { std: "docker" "start" "-a" "90729cfeab9e627076578801ff0b8373547f3d33eb5320c85a77a8535b820629", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]   --> src/medium/freqstack.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/medium/freqstack.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[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: struct `SubrectangleQueries` is never constructed
[INFO] [stdout]  --> src/medium/subrectangle_queries.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct SubrectangleQueries {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `update_subrectangle`, and `get_value` are never used
[INFO] [stdout]   --> src/medium/subrectangle_queries.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl SubrectangleQueries {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 10 |     fn new(rectangle: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn update_subrectangle(&mut self, row1: i32, col1: i32, row2: i32, col2: i32, new_value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn get_value(&self, row: i32, col: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreqStack` is never constructed
[INFO] [stdout]  --> src/medium/freqstack.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct FreqStack {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/medium/freqstack.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl FreqStack {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn push(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn pop(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_common_prefix` is never used
[INFO] [stdout]  --> src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_duplicates` is never used
[INFO] [stdout]   --> src/main.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "90729cfeab9e627076578801ff0b8373547f3d33eb5320c85a77a8535b820629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90729cfeab9e627076578801ff0b8373547f3d33eb5320c85a77a8535b820629", kill_on_drop: false }`
[INFO] [stdout] 90729cfeab9e627076578801ff0b8373547f3d33eb5320c85a77a8535b820629
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ec47e9dff3fda52da5bc70451542cc22148a969e60f1d07f3484b0632f7a950
[INFO] running `Command { std: "docker" "start" "-a" "8ec47e9dff3fda52da5bc70451542cc22148a969e60f1d07f3484b0632f7a950", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]   --> src/medium/freqstack.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/medium/freqstack.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[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: struct `SubrectangleQueries` is never constructed
[INFO] [stdout]  --> src/medium/subrectangle_queries.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct SubrectangleQueries {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `update_subrectangle`, and `get_value` are never used
[INFO] [stdout]   --> src/medium/subrectangle_queries.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl SubrectangleQueries {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 10 |     fn new(rectangle: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn update_subrectangle(&mut self, row1: i32, col1: i32, row2: i32, col2: i32, new_value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn get_value(&self, row: i32, col: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreqStack` is never constructed
[INFO] [stdout]  --> src/medium/freqstack.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct FreqStack {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/medium/freqstack.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl FreqStack {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn push(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn pop(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_common_prefix` is never used
[INFO] [stdout]  --> src/main.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/medium/subrectangle_queries.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut rectangle = SubrectangleQueries::new(vec![vec![0, 0], vec![0, 0]]);
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]   --> src/medium/freqstack.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/medium/freqstack.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/medium/freqstack.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut max = 0;
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop` is never used
[INFO] [stdout]   --> src/medium/freqstack.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl FreqStack {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn pop(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "8ec47e9dff3fda52da5bc70451542cc22148a969e60f1d07f3484b0632f7a950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec47e9dff3fda52da5bc70451542cc22148a969e60f1d07f3484b0632f7a950", kill_on_drop: false }`
[INFO] [stdout] 8ec47e9dff3fda52da5bc70451542cc22148a969e60f1d07f3484b0632f7a950
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4fc970cc88ea50989d0c78d5b1be16f0de2a786149960ea53984a39d33a138b9
[INFO] running `Command { std: "docker" "start" "-a" "4fc970cc88ea50989d0c78d5b1be16f0de2a786149960ea53984a39d33a138b9", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `max`
[INFO] [stderr]   --> src/medium/freqstack.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let mut max = 0;
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]   --> src/medium/freqstack.rs:28:14
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/medium/freqstack.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for (k, v) in self.freq_counter.iter().enumerate() {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/medium/freqstack.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let mut max = 0;
[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 `SubrectangleQueries` is never constructed
[INFO] [stderr]  --> src/medium/subrectangle_queries.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct SubrectangleQueries {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `update_subrectangle`, and `get_value` are never used
[INFO] [stderr]   --> src/medium/subrectangle_queries.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl SubrectangleQueries {
[INFO] [stderr]    | ------------------------ associated items in this implementation
[INFO] [stderr] 10 |     fn new(rectangle: Vec<Vec<i32>>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 |     fn update_subrectangle(&mut self, row1: i32, col1: i32, row2: i32, col2: i32, new_value: i32) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 22 |     fn get_value(&self, row: i32, col: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FreqStack` is never constructed
[INFO] [stderr]  --> src/medium/freqstack.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct FreqStack {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stderr]   --> src/medium/freqstack.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl FreqStack {
[INFO] [stderr]    | -------------- associated items in this implementation
[INFO] [stderr] 13 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 20 |     fn push(&mut self, val: i32) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     fn pop(&self) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (lib) generated 8 warnings (run `cargo fix --lib -p leetcode` to apply 1 suggestion)
[INFO] [stderr] warning: function `longest_common_prefix` is never used
[INFO] [stderr]  --> src/main.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "leetcode" test) generated 1 warning
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/medium/subrectangle_queries.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let mut rectangle = SubrectangleQueries::new(vec![vec![0, 0], vec![0, 0]]);
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/medium/freqstack.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let mut max = 0;
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method `pop` is never used
[INFO] [stderr]   --> src/medium/freqstack.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl FreqStack {
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 26 |     fn pop(&self) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (lib test) generated 6 warnings (3 duplicates) (run `cargo fix --lib -p leetcode --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/leetcode-4021ba94a01a2f9e)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test easy::tests::test_is_subsequence ... ok
[INFO] [stdout] test easy::tests::test_pivot_index ... ok
[INFO] [stdout] test easy::tests::test_running_sum ... ok
[INFO] [stdout] test easy::tests::test_str_str ... ok
[INFO] [stdout] test medium::subrectangle_queries::tests::test_update_subrectangle ... ok
[INFO] [stdout] test medium::subrectangle_queries::tests::get_value ... ok
[INFO] [stdout] test easy::tests::test_remove_element ... ok
[INFO] [stdout] test medium::freqstack::tests::test_stack ... ok
[INFO] [stdout] test medium::max_increase_keeping_skyline::tests::test_max_increase_keeping_skyline ... ok
[INFO] [stdout] test easy::tests::test_is_isomorphic ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- easy::tests::test_is_isomorphic stdout ----
[INFO] [stdout] code == leet
[INFO] [stdout] add == egg
[INFO] [stdout] bar == foo
[INFO] [stdout] baba == badc
[INFO] [stdout] 
[INFO] [stdout] thread 'easy::tests::test_is_isomorphic' panicked at src/easy.rs:58:34:
[INFO] [stdout] called `Option::unwrap()` on a `None` value
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5cabc30b46e2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5cabc30b46e2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5cabc30b46e2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5cabc30b46e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5cabc30d97a3 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5cabc30d97a3 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x5cabc30b18c3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5cabc30b18c3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5cabc30b4532 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5cabc30b5c4c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5cabc30b5aa2 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5cabc307db84 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5cabc307db84 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5cabc30b662b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5cabc30b662b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5cabc30b63c6 - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5cabc30b4bd9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x5cabc30b608d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5cabc30d8320 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5cabc30d838c - core::panicking::panic::h318cb8731d7e290d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5cabc30d8299 - core::option::unwrap_failed::hb0c40146d06ba338
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/option.rs:2072:5
[INFO] [stdout]   21:     0x5cabc3041fb6 - core::option::Option<T>::unwrap::h0c22506106af61e5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/option.rs:1005:21
[INFO] [stdout]   22:     0x5cabc3041fb6 - leetcode::easy::is_isomorphic::h97f07efd87926b80
[INFO] [stdout]                                at /opt/rustwide/workdir/src/easy.rs:58
[INFO] [stdout]   23:     0x5cabc30428f2 - leetcode::easy::tests::test_is_isomorphic::hcdc43c94efecd436
[INFO] [stdout]                                at /opt/rustwide/workdir/src/easy.rs:146:20
[INFO] [stdout]   24:     0x5cabc30428f2 - leetcode::easy::tests::test_is_isomorphic::{{closure}}::h78df8ecee574ff0a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/easy.rs:142:28
[INFO] [stdout]   25:     0x5cabc30428f2 - core::ops::function::FnOnce::call_once::h4e51ac3750c9656e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5cabc308330b - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5cabc308330b - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   28:     0x5cabc30824fe - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   29:     0x5cabc30824fe - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   30:     0x5cabc30824fe - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   31:     0x5cabc30824fe - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   32:     0x5cabc30824fe - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   33:     0x5cabc30824fe - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   34:     0x5cabc30824fe - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   35:     0x5cabc3046074 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   36:     0x5cabc3046074 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   37:     0x5cabc3049a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   38:     0x5cabc3049a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   39:     0x5cabc3049a4a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   40:     0x5cabc3049a4a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   41:     0x5cabc3049a4a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   42:     0x5cabc3049a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   43:     0x5cabc3049a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   44:     0x5cabc30b9587 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   45:     0x5cabc30b9587 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   46:     0x5cabc30b9587 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   47:     0x7dac610edaa4 - <unknown>
[INFO] [stdout]   48:     0x7dac6117aa34 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     easy::tests::test_is_isomorphic
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "4fc970cc88ea50989d0c78d5b1be16f0de2a786149960ea53984a39d33a138b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc970cc88ea50989d0c78d5b1be16f0de2a786149960ea53984a39d33a138b9", kill_on_drop: false }`
[INFO] [stdout] 4fc970cc88ea50989d0c78d5b1be16f0de2a786149960ea53984a39d33a138b9
