[INFO] fetching crate polystrip 0.6.0...
[INFO] testing polystrip-0.6.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate polystrip 0.6.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate polystrip 0.6.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polystrip 0.6.0
[INFO] finished tweaking crates.io crate polystrip 0.6.0
[INFO] tweaked toml for crates.io crate polystrip 0.6.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate polystrip 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b6f66b4ce3579c9eca8018b2eb2c77568f3b6439398fd5574500099e99a5b9c
[INFO] running `Command { std: "docker" "start" "-a" "4b6f66b4ce3579c9eca8018b2eb2c77568f3b6439398fd5574500099e99a5b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b6f66b4ce3579c9eca8018b2eb2c77568f3b6439398fd5574500099e99a5b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b6f66b4ce3579c9eca8018b2eb2c77568f3b6439398fd5574500099e99a5b9c", kill_on_drop: false }`
[INFO] [stdout] 4b6f66b4ce3579c9eca8018b2eb2c77568f3b6439398fd5574500099e99a5b9c
[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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca570d072464add0964f24603061977b56797f6cd1d63b4b9ea5076316b95a5b
[INFO] running `Command { std: "docker" "start" "-a" "ca570d072464add0964f24603061977b56797f6cd1d63b4b9ea5076316b95a5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling mint v0.5.6
[INFO] [stderr]    Compiling align-data v0.1.0
[INFO] [stderr]    Compiling bytemuck v1.5.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling gpu-alloc-types v0.2.0
[INFO] [stderr]    Compiling gpu-alloc v0.3.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling naga v0.3.2
[INFO] [stderr]    Compiling gfx-hal v0.7.0
[INFO] [stderr]    Compiling gpu-alloc-gfx v0.3.0
[INFO] [stderr]    Compiling polystrip v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: Need to select a backend! Enable one of the ["vulkan", "metal", "dx12"] features
[INFO] [stdout]  --> src/backend.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | compile_error!("Need to select a backend! Enable one of the [\"vulkan\", \"metal\", \"dx12\"] features");
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub type Instance = <Backend as gfx_hal::Backend>::Instance;
[INFO] [stdout]    |                      ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub type PhysicalDevice = <Backend as gfx_hal::Backend>::PhysicalDevice;
[INFO] [stdout]    |                            ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:20:20
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type Device = <Backend as gfx_hal::Backend>::Device;
[INFO] [stdout]    |                    ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub type Surface = <Backend as gfx_hal::Backend>::Surface;
[INFO] [stdout]    |                     ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type QueueFamily = <Backend as gfx_hal::Backend>::QueueFamily;
[INFO] [stdout]    |                         ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:24:26
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub type CommandQueue = <Backend as gfx_hal::Backend>::CommandQueue;
[INFO] [stdout]    |                          ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:25:27
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub type CommandBuffer = <Backend as gfx_hal::Backend>::CommandBuffer;
[INFO] [stdout]    |                           ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub type ShaderModule = <Backend as gfx_hal::Backend>::ShaderModule;
[INFO] [stdout]    |                          ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub type RenderPass = <Backend as gfx_hal::Backend>::RenderPass;
[INFO] [stdout]    |                        ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub type Framebuffer = <Backend as gfx_hal::Backend>::Framebuffer;
[INFO] [stdout]    |                         ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub type Memory = <Backend as gfx_hal::Backend>::Memory;
[INFO] [stdout]    |                    ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub type CommandPool = <Backend as gfx_hal::Backend>::CommandPool;
[INFO] [stdout]    |                         ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub type Buffer = <Backend as gfx_hal::Backend>::Buffer;
[INFO] [stdout]    |                    ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:35:24
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub type BufferView = <Backend as gfx_hal::Backend>::BufferView;
[INFO] [stdout]    |                        ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub type Image = <Backend as gfx_hal::Backend>::Image;
[INFO] [stdout]    |                   ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:37:23
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ImageView = <Backend as gfx_hal::Backend>::ImageView;
[INFO] [stdout]    |                       ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type Sampler = <Backend as gfx_hal::Backend>::Sampler;
[INFO] [stdout]    |                     ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub type ComputePipeline = <Backend as gfx_hal::Backend>::ComputePipeline;
[INFO] [stdout]    |                             ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub type GraphicsPipeline = <Backend as gfx_hal::Backend>::GraphicsPipeline;
[INFO] [stdout]    |                              ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub type PipelineCache = <Backend as gfx_hal::Backend>::PipelineCache;
[INFO] [stdout]    |                           ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:43:28
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub type PipelineLayout = <Backend as gfx_hal::Backend>::PipelineLayout;
[INFO] [stdout]    |                            ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:44:28
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub type DescriptorPool = <Backend as gfx_hal::Backend>::DescriptorPool;
[INFO] [stdout]    |                            ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub type DescriptorSet = <Backend as gfx_hal::Backend>::DescriptorSet;
[INFO] [stdout]    |                           ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:46:33
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub type DescriptorSetLayout = <Backend as gfx_hal::Backend>::DescriptorSetLayout;
[INFO] [stdout]    |                                 ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub type Fence = <Backend as gfx_hal::Backend>::Fence;
[INFO] [stdout]    |                   ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:49:23
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub type Semaphore = <Backend as gfx_hal::Backend>::Semaphore;
[INFO] [stdout]    |                       ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub type Event = <Backend as gfx_hal::Backend>::Event;
[INFO] [stdout]    |                   ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:51:23
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub type QueryPool = <Backend as gfx_hal::Backend>::QueryPool;
[INFO] [stdout]    |                       ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in this scope
[INFO] [stdout]   --> src/backend.rs:53:76
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub type SwapchainImage = <Surface as gfx_hal::window::PresentationSurface<Backend>>::SwapchainImage;
[INFO] [stdout]    |                                                                            ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 3  | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in module `backend`
[INFO] [stdout]   --> src/lib.rs:58:76
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub queue_groups: RefCell<Vec<gfx_hal::queue::family::QueueGroup<backend::Backend>>>,
[INFO] [stdout]    |                                                                               ^^^^^^^ not found in `backend`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 18 | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in module `backend`
[INFO] [stdout]   --> src/lib.rs:59:50
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub adapter: gfx_hal::adapter::Adapter<backend::Backend>,
[INFO] [stdout]    |                                                     ^^^^^^^ not found in `backend`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 18 | use gfx_hal::Backend;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Backend` in module `backend`
[INFO] [stdout]     --> src/lib.rs:1031:100
[INFO] [stdout]      |
[INFO] [stdout] 1031 |     swap_chain_frame: ManuallyDrop<<backend::Surface as gfx_hal::window::PresentationSurface<backend::Backend>>::SwapchainImage>,
[INFO] [stdout]      |                                                                                                       ^^^^^^^ not found in `backend`
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]      |
[INFO] [stdout] 18   | use gfx_hal::Backend;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gfx_hal::prelude`
[INFO] [stdout]   --> src/lib.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use gfx_hal::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]    --> src/lib.rs:850:7
[INFO] [stdout]     |
[INFO] [stdout] 850 |         use std::borrow::Borrow;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 33 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polystrip` due to 34 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ca570d072464add0964f24603061977b56797f6cd1d63b4b9ea5076316b95a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca570d072464add0964f24603061977b56797f6cd1d63b4b9ea5076316b95a5b", kill_on_drop: false }`
[INFO] [stdout] ca570d072464add0964f24603061977b56797f6cd1d63b4b9ea5076316b95a5b