[INFO] updating cached repository https://github.com/SaucySalamander/potato
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/SaucySalamander/potato
[INFO] [stderr]  * [new branch]      dependabot/cargo/winit-0.22.2 -> dependabot/cargo/winit-0.22.2
[INFO] [stderr]    172606c..124cfa9  master     -> master
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 124cfa9179419c635222d925a7010ad11cee92ff
[INFO] checking SaucySalamander/potato against try#22dd2dd1dc07f63ae9394352d412f020d2985684 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaucySalamander%2Fpotato" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SaucySalamander/potato on toolchain 22dd2dd1dc07f63ae9394352d412f020d2985684
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SaucySalamander/potato
[INFO] finished tweaking git repo https://github.com/SaucySalamander/potato
[INFO] tweaked toml for git repo https://github.com/SaucySalamander/potato written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/SaucySalamander/potato already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68d963cf3bf61f5796d90c78780673081909451cf3df88345c9283fd625c6969
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "68d963cf3bf61f5796d90c78780673081909451cf3df88345c9283fd625c6969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68d963cf3bf61f5796d90c78780673081909451cf3df88345c9283fd625c6969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68d963cf3bf61f5796d90c78780673081909451cf3df88345c9283fd625c6969", kill_on_drop: false }`
[INFO] [stdout] 68d963cf3bf61f5796d90c78780673081909451cf3df88345c9283fd625c6969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+22dd2dd1dc07f63ae9394352d412f020d2985684" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2acfacf00dc45993bbff8a60b3005fea64d0c4dc9af289c47d8ee0415b98693a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2acfacf00dc45993bbff8a60b3005fea64d0c4dc9af289c47d8ee0415b98693a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking instant v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking ash v0.31.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking parking_lot_core v0.7.2
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[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking smithay-client-toolkit v0.6.6
[INFO] [stderr]     Checking winit v0.22.1
[INFO] [stderr]     Checking potato v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cstring_vec`
[INFO] [stdout]   --> src/vulkan/vulk_init.rs:98:14
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let (cstring_vec, enable_layer_names) =
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cstring_vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cstring_vec`
[INFO] [stdout]   --> src/vulkan/device.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let (cstring_vec, enable_layer_names) = conver_str_vec_to_c_str_ptr_vec(VALIDATION.required_validation_layers.to_vec());
[INFO] [stdout]    |          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cstring_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graphics_queue`
[INFO] [stdout]   --> src/vulkan/device.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let graphics_queue = unsafe {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_graphics_queue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cstring_vec`
[INFO] [stdout]   --> src/vulkan/vulk_init.rs:98:14
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let (cstring_vec, enable_layer_names) =
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cstring_vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cstring_vec`
[INFO] [stdout]   --> src/vulkan/device.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let (cstring_vec, enable_layer_names) = conver_str_vec_to_c_str_ptr_vec(VALIDATION.required_validation_layers.to_vec());
[INFO] [stdout]    |          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cstring_vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graphics_queue`
[INFO] [stdout]   --> src/vulkan/device.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let graphics_queue = unsafe {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_graphics_queue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_file_to_str`
[INFO] [stdout]  --> src/io/file.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file_to_str(path: &str) -> Result<String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]   --> src/io/file.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn write_file(path: &str, contents: &str) -> Result<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `append_file`
[INFO] [stdout]   --> src/io/file.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn append_file(path: &str, contents: &str) -> Result<()>{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain`
[INFO] [stdout]   --> src/vulkan/vulk_init.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     swapchain: PotatoSwapChain,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_loader`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     swapchain_loader: Swapchain,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     swapchain: SwapchainKHR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_images`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     swapchain_images: Vec<Image>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_format`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     swapchain_format: Format,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_extent`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     swapchain_extent: Extent2D,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_file_to_str`
[INFO] [stdout]  --> src/io/file.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file_to_str(path: &str) -> Result<String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]   --> src/io/file.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn write_file(path: &str, contents: &str) -> Result<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `append_file`
[INFO] [stdout]   --> src/io/file.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn append_file(path: &str, contents: &str) -> Result<()>{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain`
[INFO] [stdout]   --> src/vulkan/vulk_init.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     swapchain: PotatoSwapChain,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_loader`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     swapchain_loader: Swapchain,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     swapchain: SwapchainKHR,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_images`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     swapchain_images: Vec<Image>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_format`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     swapchain_format: Format,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `swapchain_extent`
[INFO] [stdout]   --> src/vulkan/swapchain.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     swapchain_extent: Extent2D,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "2acfacf00dc45993bbff8a60b3005fea64d0c4dc9af289c47d8ee0415b98693a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2acfacf00dc45993bbff8a60b3005fea64d0c4dc9af289c47d8ee0415b98693a", kill_on_drop: false }`
[INFO] [stdout] 2acfacf00dc45993bbff8a60b3005fea64d0c4dc9af289c47d8ee0415b98693a