[INFO] cloning repository https://github.com/Kittenlover229/evster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kittenlover229/evster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKittenlover229%2Fevster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKittenlover229%2Fevster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 567dd2fd104433d13f77ada525e00dadbeb59e83
[INFO] documenting Kittenlover229/evster against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKittenlover229%2Fevster" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kittenlover229/evster on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Kittenlover229/evster
[INFO] finished tweaking git repo https://github.com/Kittenlover229/evster
[INFO] tweaked toml for git repo https://github.com/Kittenlover229/evster written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Kittenlover229/evster 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-6-tc1/source/crates/client/Cargo.toml: unused manifest key: package.crate-type
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded profiling-procmacros v1.0.8
[INFO] [stderr]   Downloaded pathfinding v4.3.0
[INFO] [stderr]   Downloaded puffin v0.12.1
[INFO] [stderr]   Downloaded delaunator v1.0.2
[INFO] [stderr]   Downloaded naga v0.12.2
[INFO] [stderr]   Downloaded puffin v0.15.0
[INFO] [stderr]   Downloaded egui-wgpu v0.22.0
[INFO] [stderr]   Downloaded wgpu v0.16.1
[INFO] [stderr]   Downloaded nalgebra-glm v0.18.0
[INFO] [stderr]   Downloaded wgpu-hal v0.16.1
[INFO] [stderr]   Downloaded puffin_egui v0.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe4bb578d64d0f7315fd8c10c12d2f5125bc6b38a9223ffb1422f955524615d5
[INFO] running `Command { std: "docker" "start" "-a" "fe4bb578d64d0f7315fd8c10c12d2f5125bc6b38a9223ffb1422f955524615d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe4bb578d64d0f7315fd8c10c12d2f5125bc6b38a9223ffb1422f955524615d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4bb578d64d0f7315fd8c10c12d2f5125bc6b38a9223ffb1422f955524615d5", kill_on_drop: false }`
[INFO] [stdout] fe4bb578d64d0f7315fd8c10c12d2f5125bc6b38a9223ffb1422f955524615d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 733cd19e18caa2378dcfb13fd4201d5865458415c3dbec4d46ce35650ab99252
[INFO] running `Command { std: "docker" "start" "-a" "733cd19e18caa2378dcfb13fd4201d5865458415c3dbec4d46ce35650ab99252", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/client/Cargo.toml: unused manifest key: package.crate-type
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling xml-rs v0.8.14
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking simd-adler32 v0.3.5
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking ttf-parser v0.19.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking fdeflate v0.3.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ab_glyph v0.2.21
[INFO] [stderr]     Checking png v0.17.9
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling ash v0.37.3+1.3.251
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking spirv v0.2.0+1.5.4
[INFO] [stderr]     Checking puffin v0.12.1
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking gpu-descriptor-types v0.1.1
[INFO] [stderr]     Checking gpu-alloc-types v0.2.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking bitflags v2.3.3
[INFO] [stderr]    Compiling paste v1.0.12
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]     Checking hexf-parse v0.2.1
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]    Compiling winit v0.28.6
[INFO] [stderr]     Checking wgpu-types v0.16.0
[INFO] [stderr]     Checking gpu-alloc v0.5.4
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]     Checking gpu-descriptor v0.2.3
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling bytemuck_derive v1.4.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling pin-project-internal v1.1.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.7
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking renderdoc-sys v1.0.0
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking ecolor v0.22.0
[INFO] [stderr]     Checking emath v0.22.0
[INFO] [stderr]     Checking tiny-skia-path v0.8.4
[INFO] [stderr]     Checking epaint v0.22.0
[INFO] [stderr]     Checking calloop v0.10.6
[INFO] [stderr]    Compiling profiling-procmacros v1.0.8
[INFO] [stderr]     Checking safe_arch v0.7.0
[INFO] [stderr]     Checking glow v0.12.2
[INFO] [stderr]     Checking tiny-skia v0.8.4
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking profiling v1.0.8
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking wide v0.7.10
[INFO] [stderr]     Checking pin-project v1.1.0
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling time-macros v0.2.9
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking simba v0.8.1
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking egui v0.22.0
[INFO] [stderr]     Checking puffin v0.15.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking lz4_flex v0.10.0
[INFO] [stderr]     Checking home v0.5.5
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking half v2.2.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking exr v1.6.4
[INFO] [stderr]     Checking naga v0.12.2
[INFO] [stderr]     Checking puffin v0.16.0
[INFO] [stderr]     Checking time v0.3.22
[INFO] [stderr]     Checking webbrowser v0.8.10
[INFO] [stderr]     Checking gif v0.12.0
[INFO] [stderr]     Checking tiff v0.8.1
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]     Checking type-map v0.5.0
[INFO] [stderr]     Checking natord v1.0.9
[INFO] [stderr]     Checking allocator-api2 v0.2.15
[INFO] [stderr]    Compiling rustix v0.37.20
[INFO] [stderr]     Checking vec1 v1.10.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]     Checking puffin_egui v0.22.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking robust v0.2.3
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking image v0.24.6
[INFO] [stderr]     Checking delaunator v1.0.2
[INFO] [stderr]     Checking pathfinding v4.3.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking pollster v0.3.0
[INFO] [stderr]     Checking nalgebra v0.32.2
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stderr]     Checking wgpu-hal v0.16.1
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]     Checking pretty_env_logger v0.5.0
[INFO] [stderr]     Checking wgpu-core v0.16.1
[INFO] [stderr]     Checking wgpu v0.16.1
[INFO] [stderr]     Checking nalgebra-glm v0.18.0
[INFO] [stderr]     Checking sctk-adwaita v0.5.4
[INFO] [stderr]     Checking smithay-clipboard v0.6.6
[INFO] [stderr]     Checking egui-winit v0.22.0
[INFO] [stderr]     Checking egui-wgpu v0.22.0
[INFO] [stderr]     Checking engine v0.0.0 (/opt/rustwide/workdir/crates/engine)
[INFO] [stderr]  Documenting engine v0.0.0 (/opt/rustwide/workdir/crates/engine)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> crates/engine/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coroutines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> crates/engine/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coroutines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `engine`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type cdylib --crate-type rlib --crate-name engine crates/engine/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a0ac79c4fa293a6a -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-31ecfb3edcf00adf.rmeta --extern bytemuck=/opt/rustwide/target/debug/deps/libbytemuck-19c54fa7fbc82ce4.rmeta --extern egui=/opt/rustwide/target/debug/deps/libegui-bc17a8397fab9589.rmeta --extern egui_wgpu=/opt/rustwide/target/debug/deps/libegui_wgpu-e3dfc4d5e78d1600.rmeta --extern egui_winit=/opt/rustwide/target/debug/deps/libegui_winit-812ebd3d464ff0e0.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-9f729358f016f211.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-7c6e6413b4aeb234.rmeta --extern instant=/opt/rustwide/target/debug/deps/libinstant-b38fee5e62eb35ae.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-2c25ea308c0698ae.rmeta --extern nalgebra_glm=/opt/rustwide/target/debug/deps/libnalgebra_glm-5684578bad6fcd24.rmeta --extern puffin_egui=/opt/rustwide/target/debug/deps/libpuffin_egui-57456dc8c814c2ca.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-08281270914b1f23.rmeta --extern raw_window_handle=/opt/rustwide/target/debug/deps/libraw_window_handle-e59f0b9ed20d2df3.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-14989af6c4abbb92.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4b724f079a121778.rmeta --extern wgpu=/opt/rustwide/target/debug/deps/libwgpu-8515561d2f8a3fa5.rmeta --extern winit=/opt/rustwide/target/debug/deps/libwinit-dc3484bb5cf96ed5.rmeta --cap-lints=warn --crate-version 0.0.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generator_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generators)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(ptr_as_uninit)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_from_generator)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generator_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(ptr_as_uninit)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_from_generator)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/engine/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(try_trait_v2)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `generator_trait`
[INFO] [stdout]  --> crates/engine/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generator_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `iter_from_generator`
[INFO] [stdout]  --> crates/engine/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(iter_from_generator)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `engine` (lib) due to 14 previous errors
[INFO] running `Command { std: "docker" "inspect" "733cd19e18caa2378dcfb13fd4201d5865458415c3dbec4d46ce35650ab99252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "733cd19e18caa2378dcfb13fd4201d5865458415c3dbec4d46ce35650ab99252", kill_on_drop: false }`
[INFO] [stdout] 733cd19e18caa2378dcfb13fd4201d5865458415c3dbec4d46ce35650ab99252
