[INFO] cloning repository https://github.com/AlecGoncharow/eight_queens
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlecGoncharow/eight_queens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Feight_queens", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Feight_queens'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72013de890dd8ab2bdc783e3a60bd444b7c66193
[INFO] checking AlecGoncharow/eight_queens against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Feight_queens" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlecGoncharow/eight_queens
[INFO] finished tweaking git repo https://github.com/AlecGoncharow/eight_queens
[INFO] tweaked toml for git repo https://github.com/AlecGoncharow/eight_queens written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlecGoncharow/eight_queens on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlecGoncharow/eight_queens 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 009f78dadae7587e97bb2fcd8657cae10af3f19d4786a6625c5cdf5ceb9efd38
[INFO] running `Command { std: "docker" "start" "-a" "009f78dadae7587e97bb2fcd8657cae10af3f19d4786a6625c5cdf5ceb9efd38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "009f78dadae7587e97bb2fcd8657cae10af3f19d4786a6625c5cdf5ceb9efd38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009f78dadae7587e97bb2fcd8657cae10af3f19d4786a6625c5cdf5ceb9efd38", kill_on_drop: false }`
[INFO] [stdout] 009f78dadae7587e97bb2fcd8657cae10af3f19d4786a6625c5cdf5ceb9efd38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cea36e8aac98cddfa203e9daadd014087e3077ac6771cb05c380081c95f79ff5
[INFO] running `Command { std: "docker" "start" "-a" "cea36e8aac98cddfa203e9daadd014087e3077ac6771cb05c380081c95f79ff5", kill_on_drop: false }`
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[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling smart-default v0.5.2
[INFO] [stderr]     Checking gilrs v0.7.1
[INFO] [stderr]     Checking euclid v0.19.8
[INFO] [stderr]     Checking rodio v0.8.1
[INFO] [stderr]     Checking lyon_geom v0.12.6
[INFO] [stderr]     Checking gfx_core v0.9.1
[INFO] [stderr]     Checking lyon_path v0.13.1
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking lyon_tessellation v0.13.1
[INFO] [stderr]     Checking lyon_algorithms v0.13.1
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking lyon v0.13.1
[INFO] [stderr]     Checking gfx_device_gl v0.16.1
[INFO] [stderr]     Checking gfx v0.18.1
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling ggez v0.5.0-rc.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.5
[INFO] [stderr]     Checking winit v0.19.1
[INFO] [stderr]     Checking glutin v0.20.0
[INFO] [stderr]     Checking gfx_window_glutin v0.30.0
[INFO] [stderr]     Checking eight_queens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::prelude::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ContextBuilder`
[INFO] [stdout]  --> src/board.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ggez::{Context, ContextBuilder, GameResult, graphics};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::prelude::*`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ContextBuilder`
[INFO] [stdout]  --> src/board.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ggez::{Context, ContextBuilder, GameResult, graphics};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `conflicts` are never read
[INFO] [stdout]   --> src/board.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 22 |     pub size: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 23 |     pub blocks: Blocks,
[INFO] [stdout] 24 |     pub conflicts: i32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `conflicts` are never read
[INFO] [stdout]   --> src/board.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Board {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 22 |     pub size: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 23 |     pub blocks: Blocks,
[INFO] [stdout] 24 |     pub conflicts: i32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_from_queens` and `initialize_queens` are never used
[INFO] [stdout]   --> src/board.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Board {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn new_from_queens(queens: Vec<usize>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     pub fn initialize_queens(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_from_queens` and `initialize_queens` are never used
[INFO] [stdout]   --> src/board.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Board {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn new_from_queens(queens: Vec<usize>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     pub fn initialize_queens(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_from_queens` and `initialize_queens` are never used
[INFO] [stdout]    --> src/board.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl Blocks {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub fn new_from_queens(queens: Vec<usize>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     pub fn initialize_queens(&mut self, size: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_from_queens` and `initialize_queens` are never used
[INFO] [stdout]    --> src/board.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl Blocks {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub fn new_from_queens(queens: Vec<usize>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     pub fn initialize_queens(&mut self, size: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `state` and `attacked` are never read
[INFO] [stdout]    --> src/board.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub struct Block {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 155 |     pub state: BlockState,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 156 |     pub attacked: bool,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `queen` is never used
[INFO] [stdout]    --> src/board.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 161 | impl Block {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 162 |     pub fn queen() -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `state` and `attacked` are never read
[INFO] [stdout]    --> src/board.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub struct Block {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 155 |     pub state: BlockState,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 156 |     pub attacked: bool,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Queen` is never constructed
[INFO] [stdout]    --> src/board.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub enum BlockState {
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] 204 |     Empty,
[INFO] [stdout] 205 |     Queen,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BlockState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `queen` is never used
[INFO] [stdout]    --> src/board.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 161 | impl Block {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 162 |     pub fn queen() -> Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         self.board.draw(ctx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = self.board.draw(ctx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Queen` is never constructed
[INFO] [stdout]    --> src/board.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub enum BlockState {
[INFO] [stdout]     |          ---------- variant in this enum
[INFO] [stdout] 204 |     Empty,
[INFO] [stdout] 205 |     Queen,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BlockState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         self.board.draw(ctx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = self.board.draw(ctx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 50.34s
[INFO] running `Command { std: "docker" "inspect" "cea36e8aac98cddfa203e9daadd014087e3077ac6771cb05c380081c95f79ff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea36e8aac98cddfa203e9daadd014087e3077ac6771cb05c380081c95f79ff5", kill_on_drop: false }`
[INFO] [stdout] cea36e8aac98cddfa203e9daadd014087e3077ac6771cb05c380081c95f79ff5
