[INFO] cloning repository grovesNL/gfx-hal-tutorial
[INFO] running `"git" "clone" "--bare" "git://github.com/grovesNL/gfx-hal-tutorial.git" "work/cache/sources/gh/grovesNL/gfx-hal-tutorial"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/grovesNL/gfx-hal-tutorial'...
[INFO] running `"git" "clone" "work/cache/sources/gh/grovesNL/gfx-hal-tutorial" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/grovesNL/gfx-hal-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/grovesNL/gfx-hal-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/grovesNL/gfx-hal-tutorial" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/grovesNL/gfx-hal-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/grovesNL/gfx-hal-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6de6fc0c6c2344200c7add72e9955219b68a5b26
[INFO] sha for GitHub repo grovesNL/gfx-hal-tutorial: 6de6fc0c6c2344200c7add72e9955219b68a5b26
[INFO] validating manifest of grovesNL/gfx-hal-tutorial on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of grovesNL/gfx-hal-tutorial on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing grovesNL/gfx-hal-tutorial
[INFO] finished frobbing grovesNL/gfx-hal-tutorial
[INFO] frobbed toml for grovesNL/gfx-hal-tutorial written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/grovesNL/gfx-hal-tutorial/Cargo.toml
[INFO] started frobbing grovesNL/gfx-hal-tutorial
[INFO] finished frobbing grovesNL/gfx-hal-tutorial
[INFO] frobbed toml for grovesNL/gfx-hal-tutorial written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/grovesNL/gfx-hal-tutorial/Cargo.toml
[INFO] crate grovesNL/gfx-hal-tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking grovesNL/gfx-hal-tutorial against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-5/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/grovesNL/gfx-hal-tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c5d2435ce48de72e15844aa88092eae147f770380abe3eefebee6d2ca930f189
[INFO] running `"docker" "start" "-a" "c5d2435ce48de72e15844aa88092eae147f770380abe3eefebee6d2ca930f189"`
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]    Compiling wayland-scanner v0.21.7
[INFO] [stderr]     Checking stb_truetype v0.2.5
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking rusttype v0.7.3
[INFO] [stderr]     Checking gfx-hal v0.1.0 (https://github.com/gfx-rs/gfx#d38c2e4a)
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.21.7
[INFO] [stderr]     Checking andrew v0.1.4
[INFO] [stderr]    Compiling wayland-client v0.21.7
[INFO] [stderr]    Compiling wayland-protocols v0.21.7
[INFO] [stderr]     Checking wayland-commons v0.21.7
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.4
[INFO] [stderr]     Checking winit v0.18.0
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/gfx-e86e7f3ebdbc4218/d38c2e4/src/hal/src/command/render_pass.rs:272:36
[INFO] [stderr]     |
[INFO] [stderr] 229 | impl<'a, B: Backend> RenderPassInlineEncoder<'a, B> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 272 |         RenderPassSecondaryEncoder(self.0.cmb)
[INFO] [stderr]     |         ---------------------------^^^^^^^^^^- returning this value requires that `*self.0.cmb` is borrowed for `'a`
[INFO] [stderr] 273 |     }
[INFO] [stderr]     |     - here, drop of `self` needs exclusive access to `*self.0.cmb`, because the type `command::render_pass::RenderPassInlineEncoder<'_, B>` implements the `Drop` trait
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/gfx-e86e7f3ebdbc4218/d38c2e4/src/hal/src/command/render_pass.rs:347:62
[INFO] [stderr]     |
[INFO] [stderr] 303 | impl<'a, B: Backend> RenderPassSecondaryEncoder<'a, B> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 347 |             RenderPassInlineEncoder(RenderSubpassCommon::new(self.0))
[INFO] [stderr]     |             -------------------------------------------------^^^^^^-- returning this value requires that `*self.0` is borrowed for `'a`
[INFO] [stderr] 348 |         }
[INFO] [stderr] 349 |     }
[INFO] [stderr]     |     - here, drop of `self` needs exclusive access to `*self.0`, because the type `command::render_pass::RenderPassSecondaryEncoder<'_, B>` implements the `Drop` trait
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking gfx-hal-tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |     swapchain: <back::Backend as Backend>::Swapchain,
[INFO] [stderr]    |                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/01_instance_creation.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/01_instance_creation.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn create_instance() -> back::Instance {
[INFO] [stderr]    |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/01_instance_creation.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:35:46
[INFO] [stderr]    |
[INFO] [stderr] 35 |     _command_queues: Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:36:14
[INFO] [stderr]    |
[INFO] [stderr] 36 |     device: <back::Backend as Backend>::Device,
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:37:16
[INFO] [stderr]    |
[INFO] [stderr] 37 |     _surface: <back::Backend as Backend>::Surface,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     _adapter: Adapter<back::Backend>,
[INFO] [stderr]    |                       ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:39:16
[INFO] [stderr]    |
[INFO] [stderr] 39 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:106:29
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn create_instance() -> back::Instance {
[INFO] [stderr]     |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]     |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:110:46
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn find_queue_families(adapter: &Adapter<back::Backend>) -> QueueFamilyIds {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:126:46
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn is_adapter_suitable(adapter: &Adapter<back::Backend>) -> bool {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:130:32
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:130:59
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:141:20
[INFO] [stderr]     |
[INFO] [stderr] 141 |         instance: &back::Instance,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:143:11
[INFO] [stderr]     |
[INFO] [stderr] 143 |     ) -> <back::Backend as Backend>::Surface {
[INFO] [stderr]     |           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 |         adapter: &mut Adapter<back::Backend>,
[INFO] [stderr]     |                               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:149:20
[INFO] [stderr]     |
[INFO] [stderr] 149 |         surface: &<back::Backend as Backend>::Surface,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:151:10
[INFO] [stderr]     |
[INFO] [stderr] 151 |         <back::Backend as Backend>::Device,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:152:33
[INFO] [stderr]     |
[INFO] [stderr] 152 |         Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]     |                                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:184:27
[INFO] [stderr]     |
[INFO] [stderr] 184 |         adapter: &Adapter<back::Backend>,
[INFO] [stderr]     |                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:185:19
[INFO] [stderr]     |
[INFO] [stderr] 185 |         device: &<back::Backend as Backend>::Device,
[INFO] [stderr]     |                   ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:186:24
[INFO] [stderr]     |
[INFO] [stderr] 186 |         surface: &mut <back::Backend as Backend>::Surface,
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:187:37
[INFO] [stderr]     |
[INFO] [stderr] 187 |         previous_swapchain: Option<<back::Backend as Backend>::Swapchain>,
[INFO] [stderr]     |                                     ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:189:10
[INFO] [stderr]     |
[INFO] [stderr] 189 |         <back::Backend as Backend>::Swapchain,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:190:20
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Backbuffer<back::Backend>,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:32:46
[INFO] [stderr]    |
[INFO] [stderr] 32 |     _command_queues: Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |     _device: <back::Backend as Backend>::Device,
[INFO] [stderr]    |               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |     _adapter: Adapter<back::Backend>,
[INFO] [stderr]    |                       ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn create_instance() -> back::Instance {
[INFO] [stderr]    |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:98:46
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn find_queue_families(adapter: &Adapter<back::Backend>) -> QueueFamilyIds {
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:114:46
[INFO] [stderr]     |
[INFO] [stderr] 114 |     fn is_adapter_suitable(adapter: &Adapter<back::Backend>) -> bool {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:118:59
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:129:31
[INFO] [stderr]     |
[INFO] [stderr] 129 |         adapter: &mut Adapter<back::Backend>,
[INFO] [stderr]     |                               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:131:10
[INFO] [stderr]     |
[INFO] [stderr] 131 |         <back::Backend as Backend>::Device,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 132 |         Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]     |                                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:32:46
[INFO] [stderr]    |
[INFO] [stderr] 32 |     _command_queues: Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |     _device: <back::Backend as Backend>::Device,
[INFO] [stderr]    |               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |     _adapter: Adapter<back::Backend>,
[INFO] [stderr]    |                       ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn create_instance() -> back::Instance {
[INFO] [stderr]    |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/04_logical_device.rs:98:46
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn find_queue_families(adapter: &Adapter<back::Backend>) -> QueueFamilyIds {
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:114:46
[INFO] [stderr]     |
[INFO] [stderr] 114 |     fn is_adapter_suitable(adapter: &Adapter<back::Backend>) -> bool {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:118:59
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:129:31
[INFO] [stderr]     |
[INFO] [stderr] 129 |         adapter: &mut Adapter<back::Backend>,
[INFO] [stderr]     |                               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:131:10
[INFO] [stderr]     |
[INFO] [stderr] 131 |         <back::Backend as Backend>::Device,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/04_logical_device.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 132 |         Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]     |                                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/02_validation_layers.rs:34:16
[INFO] [stderr]    |
[INFO] [stderr] 34 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/02_validation_layers.rs:76:29
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn create_instance() -> back::Instance {
[INFO] [stderr]    |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/02_validation_layers.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]    |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |     swapchain: <back::Backend as Backend>::Swapchain,
[INFO] [stderr]    |                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:35:46
[INFO] [stderr]    |
[INFO] [stderr] 35 |     _command_queues: Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:36:14
[INFO] [stderr]    |
[INFO] [stderr] 36 |     device: <back::Backend as Backend>::Device,
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:37:16
[INFO] [stderr]    |
[INFO] [stderr] 37 |     _surface: <back::Backend as Backend>::Surface,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     _adapter: Adapter<back::Backend>,
[INFO] [stderr]    |                       ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:39:16
[INFO] [stderr]    |
[INFO] [stderr] 39 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:106:29
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn create_instance() -> back::Instance {
[INFO] [stderr]     |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]     |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:110:46
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn find_queue_families(adapter: &Adapter<back::Backend>) -> QueueFamilyIds {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:126:46
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn is_adapter_suitable(adapter: &Adapter<back::Backend>) -> bool {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:130:32
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:130:59
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:141:20
[INFO] [stderr]     |
[INFO] [stderr] 141 |         instance: &back::Instance,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:143:11
[INFO] [stderr]     |
[INFO] [stderr] 143 |     ) -> <back::Backend as Backend>::Surface {
[INFO] [stderr]     |           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:148:31
[INFO] [stderr]     |
[INFO] [stderr] 148 |         adapter: &mut Adapter<back::Backend>,
[INFO] [stderr]     |                               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:149:20
[INFO] [stderr]     |
[INFO] [stderr] 149 |         surface: &<back::Backend as Backend>::Surface,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:151:10
[INFO] [stderr]     |
[INFO] [stderr] 151 |         <back::Backend as Backend>::Device,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:152:33
[INFO] [stderr]     |
[INFO] [stderr] 152 |         Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]     |                                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:184:27
[INFO] [stderr]     |
[INFO] [stderr] 184 |         adapter: &Adapter<back::Backend>,
[INFO] [stderr]     |                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:185:19
[INFO] [stderr]     |
[INFO] [stderr] 185 |         device: &<back::Backend as Backend>::Device,
[INFO] [stderr]     |                   ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:186:24
[INFO] [stderr]     |
[INFO] [stderr] 186 |         surface: &mut <back::Backend as Backend>::Surface,
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:187:37
[INFO] [stderr]     |
[INFO] [stderr] 187 |         previous_swapchain: Option<<back::Backend as Backend>::Swapchain>,
[INFO] [stderr]     |                                     ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:189:10
[INFO] [stderr]     |
[INFO] [stderr] 189 |         <back::Backend as Backend>::Swapchain,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/06_swap_chain_creation.rs:190:20
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Backbuffer<back::Backend>,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:37:10
[INFO] [stderr]    |
[INFO] [stderr] 37 |         <back::Backend as Backend>::Image,
[INFO] [stderr]    |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |         <back::Backend as Backend>::ImageView,
[INFO] [stderr]    |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     swapchain: <back::Backend as Backend>::Swapchain,
[INFO] [stderr]    |                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:42:46
[INFO] [stderr]    |
[INFO] [stderr] 42 |     _command_queues: Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]    |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:43:14
[INFO] [stderr]    |
[INFO] [stderr] 43 |     device: <back::Backend as Backend>::Device,
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:44:16
[INFO] [stderr]    |
[INFO] [stderr] 44 |     _surface: <back::Backend as Backend>::Surface,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |     _adapter: Adapter<back::Backend>,
[INFO] [stderr]    |                       ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]   --> src/09_shader_modules.rs:46:16
[INFO] [stderr]    |
[INFO] [stderr] 46 |     _instance: back::Instance,
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:123:29
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn create_instance() -> back::Instance {
[INFO] [stderr]     |                             ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         back::Instance::create(WINDOW_NAME, 1)
[INFO] [stderr]     |         ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:127:46
[INFO] [stderr]     |
[INFO] [stderr] 127 |     fn find_queue_families(adapter: &Adapter<back::Backend>) -> QueueFamilyIds {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:143:46
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn is_adapter_suitable(adapter: &Adapter<back::Backend>) -> bool {
[INFO] [stderr]     |                                              ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:147:32
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:147:59
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn pick_adapter(instance: &back::Instance) -> Adapter<back::Backend> {
[INFO] [stderr]     |                                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:158:20
[INFO] [stderr]     |
[INFO] [stderr] 158 |         instance: &back::Instance,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:160:11
[INFO] [stderr]     |
[INFO] [stderr] 160 |     ) -> <back::Backend as Backend>::Surface {
[INFO] [stderr]     |           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:165:31
[INFO] [stderr]     |
[INFO] [stderr] 165 |         adapter: &mut Adapter<back::Backend>,
[INFO] [stderr]     |                               ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:166:20
[INFO] [stderr]     |
[INFO] [stderr] 166 |         surface: &<back::Backend as Backend>::Surface,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:168:10
[INFO] [stderr]     |
[INFO] [stderr] 168 |         <back::Backend as Backend>::Device,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:169:33
[INFO] [stderr]     |
[INFO] [stderr] 169 |         Vec<queue::CommandQueue<back::Backend, Graphics>>,
[INFO] [stderr]     |                                 ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:201:27
[INFO] [stderr]     |
[INFO] [stderr] 201 |         adapter: &Adapter<back::Backend>,
[INFO] [stderr]     |                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:202:19
[INFO] [stderr]     |
[INFO] [stderr] 202 |         device: &<back::Backend as Backend>::Device,
[INFO] [stderr]     |                   ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:203:24
[INFO] [stderr]     |
[INFO] [stderr] 203 |         surface: &mut <back::Backend as Backend>::Surface,
[INFO] [stderr]     |                        ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:204:37
[INFO] [stderr]     |
[INFO] [stderr] 204 |         previous_swapchain: Option<<back::Backend as Backend>::Swapchain>,
[INFO] [stderr]     |                                     ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:206:10
[INFO] [stderr]     |
[INFO] [stderr] 206 |         <back::Backend as Backend>::Swapchain,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:207:20
[INFO] [stderr]     |
[INFO] [stderr] 207 |         Backbuffer<back::Backend>,
[INFO] [stderr]     |                    ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:233:32
[INFO] [stderr]     |
[INFO] [stderr] 233 |         backbuffer: Backbuffer<back::Backend>,
[INFO] [stderr]     |                                ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |         device: &<back::Backend as Backend>::Device,
[INFO] [stderr]     |                   ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:237:10
[INFO] [stderr]     |
[INFO] [stderr] 237 |         <back::Backend as Backend>::Image,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:238:10
[INFO] [stderr]     |
[INFO] [stderr] 238 |         <back::Backend as Backend>::ImageView,
[INFO] [stderr]     |          ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `back`
[INFO] [stderr]    --> src/09_shader_modules.rs:267:43
[INFO] [stderr]     |
[INFO] [stderr] 267 |     fn create_graphics_pipeline(device: &<back::Backend as Backend>::Device) {
[INFO] [stderr]     |                                           ^^^^ use of undeclared type or module `back`
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `Instance`
[INFO] [stderr]   --> src/04_logical_device.rs:12:67
[INFO] [stderr]    |
[INFO] [stderr] 12 |     queue, Adapter, Backend, Capability, Features, Gpu, Graphics, Instance, PhysicalDevice,
[INFO] [stderr]    |                                                                   ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PhysicalDevice`
[INFO] [stderr]   --> src/04_logical_device.rs:12:77
[INFO] [stderr]    |
[INFO] [stderr] 12 |     queue, Adapter, Backend, Capability, Features, Gpu, Graphics, Instance, PhysicalDevice,
[INFO] [stderr]    |                                                                             ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `QueueFamily`
[INFO] [stderr]   --> src/04_logical_device.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     QueueFamily,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 13 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] warning: unused import: `Instance`
[INFO] [stderr]   --> src/04_logical_device.rs:12:67
[INFO] [stderr]    |
[INFO] [stderr] 12 |     queue, Adapter, Backend, Capability, Features, Gpu, Graphics, Instance, PhysicalDevice,
[INFO] [stderr]    |                                                                   ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PhysicalDevice`
[INFO] [stderr]   --> src/04_logical_device.rs:12:77
[INFO] [stderr]    |
[INFO] [stderr] 12 |     queue, Adapter, Backend, Capability, Features, Gpu, Graphics, Instance, PhysicalDevice,
[INFO] [stderr]    |                                                                             ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `QueueFamily`
[INFO] [stderr]   --> src/04_logical_device.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     QueueFamily,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 13 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] warning: unused import: `Device`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:12:62
[INFO] [stderr]    |
[INFO] [stderr] 12 |     format, queue, Adapter, Backbuffer, Backend, Capability, Device, Features, Gpu, Graphics,
[INFO] [stderr]    |                                                              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instance`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PhysicalDevice`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `QueueFamily`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:31
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Surface`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:44
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                                            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 24 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `Device`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:12:62
[INFO] [stderr]    |
[INFO] [stderr] 12 |     format, queue, Adapter, Backbuffer, Backend, Capability, Device, Features, Gpu, Graphics,
[INFO] [stderr]    |                                                              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instance`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PhysicalDevice`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `QueueFamily`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:31
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Surface`
[INFO] [stderr]   --> src/06_swap_chain_creation.rs:13:44
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                                            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 24 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `Device`
[INFO] [stderr]   --> src/09_shader_modules.rs:13:77
[INFO] [stderr]    |
[INFO] [stderr] 13 |     format, image, queue, window, Adapter, Backbuffer, Backend, Capability, Device, Features, Gpu,
[INFO] [stderr]    |                                                                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instance`
[INFO] [stderr]   --> src/09_shader_modules.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Graphics, Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PhysicalDevice`
[INFO] [stderr]   --> src/09_shader_modules.rs:14:25
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Graphics, Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `QueueFamily`
[INFO] [stderr]   --> src/09_shader_modules.rs:14:41
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Graphics, Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Surface`
[INFO] [stderr]   --> src/09_shader_modules.rs:14:54
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Graphics, Instance, PhysicalDevice, QueueFamily, Surface, SwapchainConfig,
[INFO] [stderr]    |                                                      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 31 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `gfx-hal-tutorial`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c5d2435ce48de72e15844aa88092eae147f770380abe3eefebee6d2ca930f189"`
[INFO] running `"docker" "rm" "-f" "c5d2435ce48de72e15844aa88092eae147f770380abe3eefebee6d2ca930f189"`
[INFO] [stdout] c5d2435ce48de72e15844aa88092eae147f770380abe3eefebee6d2ca930f189