[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] c19bf822b6da013b28b9dc48ec4906c0e0ebc6e8
[INFO] checking andrewgazelka/leet_rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewgazelka%2Fleet_rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andrewgazelka/leet_rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/andrewgazelka/leet_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e21d2b3d924ddc66c57811fe0ff9408f6c0291ebcb07cdf56044ea6d7121047
[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" "4e21d2b3d924ddc66c57811fe0ff9408f6c0291ebcb07cdf56044ea6d7121047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e21d2b3d924ddc66c57811fe0ff9408f6c0291ebcb07cdf56044ea6d7121047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e21d2b3d924ddc66c57811fe0ff9408f6c0291ebcb07cdf56044ea6d7121047", kill_on_drop: false }`
[INFO] [stdout] 4e21d2b3d924ddc66c57811fe0ff9408f6c0291ebcb07cdf56044ea6d7121047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4938cdda74e6d8b7e78497fd1b7ff0daf43c4c530b6e6d27a862de549240c17
[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" "d4938cdda74e6d8b7e78497fd1b7ff0daf43c4c530b6e6d27a862de549240c17", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking getrandom v0.1.15
[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)]` 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)]` 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems0300/p84.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/problems0300/p84.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(original: Vec<i32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/problems0300/p84.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn reset(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shuffle`
[INFO] [stdout]   --> src/problems0300/p84.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shuffle(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Bucket`
[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 is never used: `Elem`
[INFO] [stdout]  --> src/problems0300/p80.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Elem = i32;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Idx`
[INFO] [stdout]   --> src/problems0300/p80.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Idx = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RandomizedSet`
[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 function is never used: `new`
[INFO] [stdout]   --> src/problems0300/p80.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/problems0300/p80.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/problems0300/p80.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random`
[INFO] [stdout]   --> src/problems0300/p80.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn get_random(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/problems0300/p84.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Solution {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/problems0300/p84.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(original: Vec<i32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/problems0300/p84.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn reset(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shuffle`
[INFO] [stdout]   --> src/problems0300/p84.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shuffle(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Bucket`
[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 is never used: `Elem`
[INFO] [stdout]  --> src/problems0300/p80.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type Elem = i32;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Idx`
[INFO] [stdout]   --> src/problems0300/p80.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Idx = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RandomizedSet`
[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 function is never used: `new`
[INFO] [stdout]   --> src/problems0300/p80.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/problems0300/p80.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove`
[INFO] [stdout]   --> src/problems0300/p80.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random`
[INFO] [stdout]   --> src/problems0300/p80.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn get_random(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_vec`
[INFO] [stdout]   --> src/lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn from_vec(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.03s
[INFO] running `Command { std: "docker" "inspect" "d4938cdda74e6d8b7e78497fd1b7ff0daf43c4c530b6e6d27a862de549240c17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4938cdda74e6d8b7e78497fd1b7ff0daf43c4c530b6e6d27a862de549240c17", kill_on_drop: false }`
[INFO] [stdout] d4938cdda74e6d8b7e78497fd1b7ff0daf43c4c530b6e6d27a862de549240c17