[INFO] cloning repository https://github.com/shaozelee/knowledge_point_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shaozelee/knowledge_point_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaozelee%2Fknowledge_point_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaozelee%2Fknowledge_point_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99abf569091ac62b1bcbf0861780cbcc9d22a774
[INFO] checking shaozelee/knowledge_point_learning against try#943e2200e35c3825486c4671b6cab0107a07f8c1 for pr-148952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaozelee%2Fknowledge_point_learning" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shaozelee/knowledge_point_learning
[INFO] finished tweaking git repo https://github.com/shaozelee/knowledge_point_learning
[INFO] tweaked toml for git repo https://github.com/shaozelee/knowledge_point_learning written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shaozelee/knowledge_point_learning on toolchain 943e2200e35c3825486c4671b6cab0107a07f8c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shaozelee/knowledge_point_learning 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" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b0ea3978298e51ca35f73bf5555a58c982844a4124ce4bcf6f0d388d5095338
[INFO] running `Command { std: "docker" "start" "-a" "7b0ea3978298e51ca35f73bf5555a58c982844a4124ce4bcf6f0d388d5095338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b0ea3978298e51ca35f73bf5555a58c982844a4124ce4bcf6f0d388d5095338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0ea3978298e51ca35f73bf5555a58c982844a4124ce4bcf6f0d388d5095338", kill_on_drop: false }`
[INFO] [stdout] 7b0ea3978298e51ca35f73bf5555a58c982844a4124ce4bcf6f0d388d5095338
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfdffcf3678f53ed5379f29bf340123a39693d6db76e7ca28a202704f4f5f13f
[INFO] running `Command { std: "docker" "start" "-a" "dfdffcf3678f53ed5379f29bf340123a39693d6db76e7ca28a202704f4f5f13f", kill_on_drop: false }`
[INFO] [stderr]     Checking knowledge_point_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `count_peak_point` is never used
[INFO] [stdout]   --> src/study_demo_3.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn count_peak_point(vec: &Vec<i32>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `how_long_seconds_need` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:144:4
[INFO] [stdout]     |
[INFO] [stdout] 144 | fn how_long_seconds_need(spend: Vec<i32>, dwell: Vec<i32>, start: usize, end: usize) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_bra_licit` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:225:4
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn is_bra_licit(str: String) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_good_string` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:258:4
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn is_good_string(s: &str) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubbles_game` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:317:4
[INFO] [stdout]     |
[INFO] [stdout] 317 | fn bubbles_game(str: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_express` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:363:4
[INFO] [stdout]     |
[INFO] [stdout] 363 | fn solve_express(input_str: String) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `legal_exp` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:475:4
[INFO] [stdout]     |
[INFO] [stdout] 475 | fn legal_exp(expr: String) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_legal_stack` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:557:4
[INFO] [stdout]     |
[INFO] [stdout] 557 | fn is_legal_stack(input_stack: Vec<i32>, output_stack: Vec<i32>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_permutation` is never used
[INFO] [stdout]    --> src/study_demo_3.rs:590:4
[INFO] [stdout]     |
[INFO] [stdout] 590 | fn largest_permutation(stack_ops: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `knowledge_point_learning::study_demo_3`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use knowledge_point_learning::study_demo_3;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `knowledge_point_learning::study_demo_3`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use knowledge_point_learning::study_demo_3;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "dfdffcf3678f53ed5379f29bf340123a39693d6db76e7ca28a202704f4f5f13f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfdffcf3678f53ed5379f29bf340123a39693d6db76e7ca28a202704f4f5f13f", kill_on_drop: false }`
[INFO] [stdout] dfdffcf3678f53ed5379f29bf340123a39693d6db76e7ca28a202704f4f5f13f