[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#5431404b87967c69438ea1e698edbe96505f0798 for pr-119849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Feight_queens" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlecGoncharow/eight_queens on toolchain 5431404b87967c69438ea1e698edbe96505f0798
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[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" "+5431404b87967c69438ea1e698edbe96505f0798" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b44dc9c474a7ca79d1b22e723635cec2d7c5df560073d19a50d296a6e193cb45
[INFO] running `Command { std: "docker" "start" "-a" "b44dc9c474a7ca79d1b22e723635cec2d7c5df560073d19a50d296a6e193cb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b44dc9c474a7ca79d1b22e723635cec2d7c5df560073d19a50d296a6e193cb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b44dc9c474a7ca79d1b22e723635cec2d7c5df560073d19a50d296a6e193cb45", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "5d4255696da4cce196060caa24276407c78a21fae73846a919a2fdd33d929568", kill_on_drop: false }`
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[INFO] [stderr]    Compiling cargo_metadata v0.6.4
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[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: 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]    = 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]    = 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: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: 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: 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: 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: 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] [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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.56s
[INFO] running `Command { std: "docker" "inspect" "5d4255696da4cce196060caa24276407c78a21fae73846a919a2fdd33d929568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d4255696da4cce196060caa24276407c78a21fae73846a919a2fdd33d929568", kill_on_drop: false }`
[INFO] [stdout] 5d4255696da4cce196060caa24276407c78a21fae73846a919a2fdd33d929568
[INFO] checking AlecGoncharow/eight_queens against try#21bc403d557a2516df70ea80fb19b94177beede5 for pr-119849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Feight_queens" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlecGoncharow/eight_queens on toolchain 21bc403d557a2516df70ea80fb19b94177beede5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc2/source/Cargo.toml
[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" "+21bc403d557a2516df70ea80fb19b94177beede5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 816c11d54701503ec1e899563535d447ddde20b9290ad7d6c0641b1e8de87bb0
[INFO] running `Command { std: "docker" "start" "-a" "816c11d54701503ec1e899563535d447ddde20b9290ad7d6c0641b1e8de87bb0", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "816c11d54701503ec1e899563535d447ddde20b9290ad7d6c0641b1e8de87bb0", kill_on_drop: false }`
[INFO] [stdout] 816c11d54701503ec1e899563535d447ddde20b9290ad7d6c0641b1e8de87bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+21bc403d557a2516df70ea80fb19b94177beede5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00a64078330fa4175bfe2bdb6420a242f0307524abaaea6ecc142bbdec415d24
[INFO] running `Command { std: "docker" "start" "-a" "00a64078330fa4175bfe2bdb6420a242f0307524abaaea6ecc142bbdec415d24", kill_on_drop: false }`
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[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking nalgebra v0.18.0
[INFO] [stderr]     Checking glyph_brush v0.4.3
[INFO] [stderr]     Checking parking_lot v0.7.1
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[INFO] [stderr]     Checking gilrs v0.7.1
[INFO] [stderr]     Checking euclid v0.19.8
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking lyon_geom v0.12.6
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[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/nalgebra-0.18.0/src/lib.rs:596:65
[INFO] [stdout]     |
[INFO] [stdout] 596 |     P::from_coordinates((p1.coordinates() + p2.coordinates()) * convert(0.5))
[INFO] [stdout]     |                                                               - ^^^^^^^ cannot infer type of the type parameter `To` declared on the function `convert`
[INFO] [stdout]     |                                                               |
[INFO] [stdout]     |                                                               type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `<<P as EuclideanSpace>::Coordinates as Mul<_>>::Output == <P as EuclideanSpace>::Coordinates`
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 596 |     P::from_coordinates((p1.coordinates() + p2.coordinates()) * convert::<f64, To>(0.5))
[INFO] [stdout]     |                                                                        +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nalgebra` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "00a64078330fa4175bfe2bdb6420a242f0307524abaaea6ecc142bbdec415d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a64078330fa4175bfe2bdb6420a242f0307524abaaea6ecc142bbdec415d24", kill_on_drop: false }`
[INFO] [stdout] 00a64078330fa4175bfe2bdb6420a242f0307524abaaea6ecc142bbdec415d24