[INFO] fetching crate smithay 0.3.0...
[INFO] checking smithay-0.3.0 against nightly-2024-02-05 for check-cfg-2
[INFO] extracting crate smithay 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate smithay 0.3.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smithay 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate smithay 0.3.0
[INFO] tweaked toml for crates.io crate smithay 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate smithay 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "eae496c02b60bd4cac258e59bf3cb1c2bb85ddc72a37f5850804631d58edd88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eae496c02b60bd4cac258e59bf3cb1c2bb85ddc72a37f5850804631d58edd88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eae496c02b60bd4cac258e59bf3cb1c2bb85ddc72a37f5850804631d58edd88b", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "f4c091c02fa6a87f954a58d8bfae62d113c0917a7bb588d204ed150d9694bb24", kill_on_drop: false }`
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[INFO] [stderr]     Checking wayland-commons v0.29.0
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[INFO] [stderr]     Checking wayland-egl v0.29.0
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[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 138 |             egl_platform!(PLATFORM_GBM_KHR, self.as_raw(), &["EGL_KHR_platform_gbm"]),
[INFO] [stdout]     |             ------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 140 |             egl_platform!(PLATFORM_GBM_MESA, self.as_raw(), &["EGL_MESA_platform_gbm"]),
[INFO] [stdout]     |             --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 151 |                 egl_platform!(PLATFORM_WAYLAND_KHR, display, &["EGL_KHR_platform_wayland"]),
[INFO] [stdout]     |                 --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 153 |                 egl_platform!(PLATFORM_WAYLAND_EXT, display, &["EGL_EXT_platform_wayland"]),
[INFO] [stdout]     |                 --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 158 |                 egl_platform!(PLATFORM_X11_KHR, display, &["EGL_KHR_platform_x11"]),
[INFO] [stdout]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 160 |                 egl_platform!(PLATFORM_X11_EXT, display, &["EGL_EXT_platform_x11"]),
[INFO] [stdout]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 138 |             egl_platform!(PLATFORM_GBM_KHR, self.as_raw(), &["EGL_KHR_platform_gbm"]),
[INFO] [stdout]     |             ------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 140 |             egl_platform!(PLATFORM_GBM_MESA, self.as_raw(), &["EGL_MESA_platform_gbm"]),
[INFO] [stdout]     |             --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 151 |                 egl_platform!(PLATFORM_WAYLAND_KHR, display, &["EGL_KHR_platform_wayland"]),
[INFO] [stdout]     |                 --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 153 |                 egl_platform!(PLATFORM_WAYLAND_EXT, display, &["EGL_EXT_platform_wayland"]),
[INFO] [stdout]     |                 --------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 158 |                 egl_platform!(PLATFORM_X11_KHR, display, &["EGL_KHR_platform_x11"]),
[INFO] [stdout]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/backend/egl/native.rs:47:10
[INFO] [stdout]     |
[INFO] [stdout] 47  |         );
[INFO] [stdout]     |          ^
[INFO] [stdout] ...
[INFO] [stdout] 160 |                 egl_platform!(PLATFORM_X11_EXT, display, &["EGL_EXT_platform_x11"]),
[INFO] [stdout]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `egl_platform`
[INFO] [stdout]     = note: this warning originates in the macro `egl_platform` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backend/allocator/swapchain.rs:130:21
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 let mut free_slot =
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/backend/allocator/swapchain.rs:130:21
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 let mut free_slot =
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `display` is never read
[INFO] [stdout]   --> src/backend/winit.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct WinitGraphicsBackend {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 92 |     renderer: Gles2Renderer,
[INFO] [stdout] 93 |     display: EGLDisplay,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WinitGraphicsBackend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `log` is never read
[INFO] [stdout]   --> src/wayland/output/xdg.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Inner {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     log: ::slog::Logger,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wayland/tablet_manager/tablet_seat.rs:154:39
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 tool.new_instance(seat.deref(), tool_desc, move |desc, status| {
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `ZwpTabletSeatV2` does not implement `Deref`, so calling `deref` on `&ZwpTabletSeatV2` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `display` is never read
[INFO] [stdout]   --> src/backend/winit.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct WinitGraphicsBackend {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 92 |     renderer: Gles2Renderer,
[INFO] [stdout] 93 |     display: EGLDisplay,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WinitGraphicsBackend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `log` is never read
[INFO] [stdout]   --> src/wayland/output/xdg.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Inner {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     log: ::slog::Logger,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wayland/tablet_manager/tablet_seat.rs:154:39
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 tool.new_instance(seat.deref(), tool_desc, move |desc, status| {
[INFO] [stdout]     |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `ZwpTabletSeatV2` does not implement `Deref`, so calling `deref` on `&ZwpTabletSeatV2` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.81s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.2.1, smithay v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f4c091c02fa6a87f954a58d8bfae62d113c0917a7bb588d204ed150d9694bb24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4c091c02fa6a87f954a58d8bfae62d113c0917a7bb588d204ed150d9694bb24", kill_on_drop: false }`
[INFO] [stdout] f4c091c02fa6a87f954a58d8bfae62d113c0917a7bb588d204ed150d9694bb24
