[INFO] cloning repository https://github.com/andrewgazelka/leet_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewgazelka/leet_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewgazelka%2Fleet_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewgazelka%2Fleet_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 179b906fe6b1b86372dc91c0a29b6559485c0c2e
[INFO] checking andrewgazelka/leet_rust against try#24e1a22664233bce1f9b5dc6eee7c1f74327e28c for pr-159343
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewgazelka%2Fleet_rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/andrewgazelka/leet_rust
[INFO] finished tweaking git repo https://github.com/andrewgazelka/leet_rust
[INFO] tweaked toml for git repo https://github.com/andrewgazelka/leet_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/andrewgazelka/leet_rust on toolchain 24e1a22664233bce1f9b5dc6eee7c1f74327e28c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/andrewgazelka/leet_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" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "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-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666
[INFO] running `Command { std: "docker" "start" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666" "/opt/rustwide/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666" "/opt/rustwide/cargo-home/bin/cargo" "+24e1a22664233bce1f9b5dc6eee7c1f74327e28c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking leet_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]  --> src/problems0300/p80.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::{Hasher};
[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: `Hasher`
[INFO] [stdout]  --> src/problems0300/p80.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::{Hasher};
[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 variable: `x`
[INFO] [stdout]   --> src/problems0300/p80.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Entry::Occupied(x) => {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_vec` is never used
[INFO] [stdout]   --> src/lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn from_vec(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MASK_P8` is never used
[INFO] [stdout]   --> src/problems0200/p91.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const MASK_P8: u8 = mask(8) as u8;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/problems0300/p84.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `reset`, and `shuffle` are never used
[INFO] [stdout]   --> src/problems0300/p84.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Solution {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new(original: Vec<i32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn reset(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn shuffle(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bucket` is never constructed
[INFO] [stdout]  --> src/problems0300/p80.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Bucket(Vec<i32>);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elem` is never used
[INFO] [stdout]  --> src/problems0300/p80.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Elem = i32;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Idx` is never used
[INFO] [stdout]   --> src/problems0300/p80.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Idx = usize;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomizedSet` is never constructed
[INFO] [stdout]   --> src/problems0300/p80.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct RandomizedSet {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `remove`, and `get_random` are never used
[INFO] [stdout]   --> src/problems0300/p80.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl RandomizedSet {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 24 |     /** Initialize your data structure here. */
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_random(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/problems0300/p80.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Entry::Occupied(x) => {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MASK_P8` is never used
[INFO] [stdout]   --> src/problems0200/p91.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const MASK_P8: u8 = mask(8) as u8;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/problems0300/p84.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `reset`, and `shuffle` are never used
[INFO] [stdout]   --> src/problems0300/p84.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Solution {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new(original: Vec<i32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn reset(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn shuffle(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bucket` is never constructed
[INFO] [stdout]  --> src/problems0300/p80.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Bucket(Vec<i32>);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elem` is never used
[INFO] [stdout]  --> src/problems0300/p80.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Elem = i32;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Idx` is never used
[INFO] [stdout]   --> src/problems0300/p80.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Idx = usize;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomizedSet` is never constructed
[INFO] [stdout]   --> src/problems0300/p80.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct RandomizedSet {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `remove`, and `get_random` are never used
[INFO] [stdout]   --> src/problems0300/p80.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl RandomizedSet {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 24 |     /** Initialize your data structure here. */
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn get_random(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666", kill_on_drop: false }`
[INFO] [stdout] 96f4811c2863f608920020b0c75a488cd1f8f059e921f14b1964c64fe39f9666
