[INFO] cloning repository https://github.com/ichbinchicken/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/ichbinchicken/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fichbinchicken%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fichbinchicken%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6524f0a2070efb5fb56c5d743009dcea4b39d4a
[INFO] testing ichbinchicken/leetcode-rust against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fichbinchicken%2Fleetcode-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ichbinchicken/leetcode-rust
[INFO] finished tweaking git repo https://github.com/ichbinchicken/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/ichbinchicken/leetcode-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ichbinchicken/leetcode-rust on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ichbinchicken/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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac878717772809919c3ca92291c24e49055bbe3de9b2ffc5871cb548e1547d6c
[INFO] running `Command { std: "docker" "start" "-a" "ac878717772809919c3ca92291c24e49055bbe3de9b2ffc5871cb548e1547d6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac878717772809919c3ca92291c24e49055bbe3de9b2ffc5871cb548e1547d6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac878717772809919c3ca92291c24e49055bbe3de9b2ffc5871cb548e1547d6c", kill_on_drop: false }`
[INFO] [stdout] ac878717772809919c3ca92291c24e49055bbe3de9b2ffc5871cb548e1547d6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75dbbff5af28e363cb99e0b38551ce6513200b09a55adbad27027856129fe16f
[INFO] running `Command { std: "docker" "start" "-a" "75dbbff5af28e363cb99e0b38551ce6513200b09a55adbad27027856129fe16f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lc_tests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_797_all_path.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `all_paths_source_target` and `do_solution` are never used
[INFO] [stdout]   --> src/lc_797_all_path.rs:3:12
[INFO] [stdout]    |
[INFO] [stdout]  2 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  3 |     pub fn all_paths_source_target(graph: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn do_solution(curr_node: i32, graph: &Vec<Vec<i32>>, results: &mut Vec<Vec<i32>>, track: &mut Vec<i32>) -> () {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_297_course_schedule.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `can_finish`, `do_can_finish`, and `build_graph` are never used
[INFO] [stdout]   --> src/lc_297_course_schedule.rs:5:12
[INFO] [stdout]    |
[INFO] [stdout]  4 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  5 |     pub fn can_finish(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn do_can_finish(current: i32,
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_order`, `do_find_order`, and `build_graph` are never used
[INFO] [stdout]   --> src/lc_210_course_schedule_ii.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn find_order(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn do_find_order(num_courses: i32,
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "75dbbff5af28e363cb99e0b38551ce6513200b09a55adbad27027856129fe16f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75dbbff5af28e363cb99e0b38551ce6513200b09a55adbad27027856129fe16f", kill_on_drop: false }`
[INFO] [stdout] 75dbbff5af28e363cb99e0b38551ce6513200b09a55adbad27027856129fe16f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a15ae80be9139a18d631d58ae15ff16471c730ab6f4ac9645705933e6f90eacb
[INFO] running `Command { std: "docker" "start" "-a" "a15ae80be9139a18d631d58ae15ff16471c730ab6f4ac9645705933e6f90eacb", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_797_all_path.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lc_tests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated functions `all_paths_source_target` and `do_solution` are never used
[INFO] [stdout]   --> src/lc_797_all_path.rs:3:12
[INFO] [stdout]    |
[INFO] [stdout]  2 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  3 |     pub fn all_paths_source_target(graph: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn do_solution(curr_node: i32, graph: &Vec<Vec<i32>>, results: &mut Vec<Vec<i32>>, track: &mut Vec<i32>) -> () {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_297_course_schedule.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `can_finish`, `do_can_finish`, and `build_graph` are never used
[INFO] [stdout]   --> src/lc_297_course_schedule.rs:5:12
[INFO] [stdout]    |
[INFO] [stdout]  4 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  5 |     pub fn can_finish(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn do_can_finish(current: i32,
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_order`, `do_find_order`, and `build_graph` are never used
[INFO] [stdout]   --> src/lc_210_course_schedule_ii.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn find_order(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn do_find_order(num_courses: i32,
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/lc_210_course_schedule_ii.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `find_order`, `do_find_order`, and `build_graph` are never used
[INFO] [stdout]   --> src/lc_210_course_schedule_ii.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn find_order(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn do_find_order(num_courses: i32,
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "a15ae80be9139a18d631d58ae15ff16471c730ab6f4ac9645705933e6f90eacb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15ae80be9139a18d631d58ae15ff16471c730ab6f4ac9645705933e6f90eacb", kill_on_drop: false }`
[INFO] [stdout] a15ae80be9139a18d631d58ae15ff16471c730ab6f4ac9645705933e6f90eacb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a903aafcfdef0f394cd88fd8deb3b901f38e341e9e88f955666e6d82ae2f731e
[INFO] running `Command { std: "docker" "start" "-a" "a903aafcfdef0f394cd88fd8deb3b901f38e341e9e88f955666e6d82ae2f731e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `VecDeque`
[INFO] [stderr]  --> src/lc_210_course_schedule_ii.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/lc_797_all_path.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `all_paths_source_target` and `do_solution` are never used
[INFO] [stderr]   --> src/lc_797_all_path.rs:3:12
[INFO] [stderr]    |
[INFO] [stderr]  2 | impl Solution {
[INFO] [stderr]    | ------------- associated functions in this implementation
[INFO] [stderr]  3 |     pub fn all_paths_source_target(graph: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 12 |     fn do_solution(curr_node: i32, graph: &Vec<Vec<i32>>, results: &mut Vec<Vec<i32>>, track: &mut Vec<i32>) -> () {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/lc_297_course_schedule.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `can_finish`, `do_can_finish`, and `build_graph` are never used
[INFO] [stderr]   --> src/lc_297_course_schedule.rs:5:12
[INFO] [stderr]    |
[INFO] [stderr]  4 | impl Solution {
[INFO] [stderr]    | ------------- associated functions in this implementation
[INFO] [stderr]  5 |     pub fn can_finish(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 17 |     fn do_can_finish(current: i32,
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/lc_210_course_schedule_ii.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `find_order`, `do_find_order`, and `build_graph` are never used
[INFO] [stderr]   --> src/lc_210_course_schedule_ii.rs:4:12
[INFO] [stderr]    |
[INFO] [stderr]  3 | impl Solution {
[INFO] [stderr]    | ------------- associated functions in this implementation
[INFO] [stderr]  4 |     pub fn find_order(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 23 |     fn do_find_order(num_courses: i32,
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     fn build_graph(prerequisites: &Vec<Vec<i32>>) -> HashMap<i32, Vec<i32>> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lc_tests` (lib) generated 7 warnings (run `cargo fix --lib -p lc_tests` to apply 1 suggestion)
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/lc_210_course_schedule_ii.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lc_tests` (lib test) generated 3 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lc_tests-fc6a9498d2d21459)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test lc_297_course_schedule::course_schedule_one_test::test_func ... ok
[INFO] [stdout] test lc_297_course_schedule::course_schedule_one_test::test_graph ... ok
[INFO] [stdout] test lc_297_course_schedule::course_schedule_one_test::test_graph_2 ... ok
[INFO] [stdout] test lc_46_permutations::permute_tests::permute_works ... ok
[INFO] [stdout] test lc_797_all_path::all_paths::test_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lc_tests
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a903aafcfdef0f394cd88fd8deb3b901f38e341e9e88f955666e6d82ae2f731e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a903aafcfdef0f394cd88fd8deb3b901f38e341e9e88f955666e6d82ae2f731e", kill_on_drop: false }`
[INFO] [stdout] a903aafcfdef0f394cd88fd8deb3b901f38e341e9e88f955666e6d82ae2f731e
