[INFO] fetching crate bevy_chair 0.9.1...
[INFO] testing bevy_chair-0.9.1 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate bevy_chair 0.9.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate bevy_chair 0.9.1 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bevy_chair 0.9.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate bevy_chair 0.9.1
[INFO] tweaked toml for crates.io crate bevy_chair 0.9.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate bevy_chair 0.9.1 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded euclid v0.22.7
[INFO] [stderr]   Downloaded bevy_scene v0.9.1
[INFO] [stderr]   Downloaded svg_fmt v0.4.1
[INFO] [stderr]   Downloaded guillotiere v0.6.2
[INFO] [stderr]   Downloaded ab_glyph_rasterizer v0.1.7
[INFO] [stderr]   Downloaded glyph_brush_layout v0.2.3
[INFO] [stderr]   Downloaded anyhow v1.0.68
[INFO] [stderr]   Downloaded bevy_pbr v0.9.1
[INFO] [stderr]   Downloaded gilrs-core v0.5.2
[INFO] [stderr]   Downloaded enumflags2_derive v0.7.4
[INFO] [stderr]   Downloaded bit-set v0.5.3
[INFO] [stderr]   Downloaded pp-rs v0.2.1
[INFO] [stderr]   Downloaded malloc_buf v0.0.6
[INFO] [stderr]   Downloaded notify v5.0.0
[INFO] [stderr]   Downloaded fsevent-sys v4.1.0
[INFO] [stderr]   Downloaded io-kit-sys v0.2.0
[INFO] [stderr]   Downloaded nix v0.25.1
[INFO] [stderr]   Downloaded winit v0.27.5
[INFO] [stderr]   Downloaded radsort v0.1.0
[INFO] [stderr]   Downloaded dispatch v0.2.0
[INFO] [stderr]   Downloaded wgpu-types v0.14.1
[INFO] [stderr]   Downloaded d3d12 v0.5.0
[INFO] [stderr]   Downloaded gilrs v0.10.1
[INFO] [stderr]   Downloaded cpal v0.14.2
[INFO] [stderr]   Downloaded bevy_reflect_derive v0.9.1
[INFO] [stderr]   Downloaded alsa v0.6.0
[INFO] [stderr]   Downloaded gltf v1.0.0
[INFO] [stderr]   Downloaded rodio v0.16.0
[INFO] [stderr]   Downloaded base-x v0.2.11
[INFO] [stderr]   Downloaded bindgen v0.61.0
[INFO] [stderr]   Downloaded alsa-sys v0.3.1
[INFO] [stderr]   Downloaded nix v0.23.2
[INFO] [stderr]   Downloaded bevy_asset v0.9.1
[INFO] [stderr]   Downloaded proc-macro-crate v1.2.1
[INFO] [stderr]   Downloaded ndk-sys v0.3.0
[INFO] [stderr]   Downloaded bevy_time v0.9.1
[INFO] [stderr]   Downloaded ash v0.37.1+1.3.235
[INFO] [stderr]   Downloaded naga v0.10.0
[INFO] [stderr]   Downloaded bevy_core v0.9.1
[INFO] [stderr]   Downloaded image v0.24.5
[INFO] [stderr]   Downloaded hexf-parse v0.2.1
[INFO] [stderr]   Downloaded raw-window-handle v0.5.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.37.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.37.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.37.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.37.0
[INFO] [stderr]   Downloaded ndk-glue v0.7.0
[INFO] [stderr]   Downloaded kqueue-sys v1.0.3
[INFO] [stderr]   Downloaded bevy_render_macros v0.9.1
[INFO] [stderr]   Downloaded bevy_transform v0.9.1
[INFO] [stderr]   Downloaded bevy_ecs_macros v0.9.1
[INFO] [stderr]   Downloaded glam v0.22.0
[INFO] [stderr]   Downloaded slotmap v1.0.6
[INFO] [stderr]   Downloaded windows_i686_msvc v0.37.0
[INFO] [stderr]   Downloaded renderdoc-sys v0.7.1
[INFO] [stderr]   Downloaded mach v0.3.2
[INFO] [stderr]   Downloaded bevy_ecs v0.9.1
[INFO] [stderr]   Downloaded unicode-xid v0.2.4
[INFO] [stderr]   Downloaded ndk v0.7.0
[INFO] [stderr]   Downloaded ndk-context v0.1.1
[INFO] [stderr]   Downloaded wgpu-core v0.14.2
[INFO] [stderr]   Downloaded gltf-derive v1.0.0
[INFO] [stderr]   Downloaded gltf-json v1.0.0
[INFO] [stderr]   Downloaded bevy_gltf v0.9.1
[INFO] [stderr]   Downloaded rectangle-pack v0.4.2
[INFO] [stderr]   Downloaded num_enum_derive v0.5.7
[INFO] [stderr]   Downloaded bevy_encase_derive v0.9.1
[INFO] [stderr]   Downloaded windows v0.43.0
[INFO] [stderr]   Downloaded bevy_mikktspace v0.9.1
[INFO] [stderr]   Downloaded bevy_hierarchy v0.9.1
[INFO] [stderr]   Downloaded taffy v0.1.0
[INFO] [stderr]   Downloaded approx v0.5.1
[INFO] [stderr]   Downloaded bevy_log v0.9.1
[INFO] [stderr]   Downloaded bevy_derive v0.9.1
[INFO] [stderr]   Downloaded bevy_app v0.9.1
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded concurrent-queue v1.2.4
[INFO] [stderr]   Downloaded bevy_tasks v0.9.1
[INFO] [stderr]   Downloaded bevy_reflect v0.9.1
[INFO] [stderr]   Downloaded num_enum v0.5.7
[INFO] [stderr]   Downloaded ndk-macro v0.3.0
[INFO] [stderr]   Downloaded bevy_math v0.9.1
[INFO] [stderr]   Downloaded bevy_ptr v0.9.1
[INFO] [stderr]   Downloaded toml v0.5.10
[INFO] [stderr]   Downloaded encase v0.4.1
[INFO] [stderr]   Downloaded png v0.17.7
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.11
[INFO] [stderr]   Downloaded coreaudio-rs v0.10.0
[INFO] [stderr]   Downloaded windows v0.37.0
[INFO] [stderr]   Downloaded ndk v0.6.0
[INFO] [stderr]   Downloaded oboe-sys v0.4.5
[INFO] [stderr]   Downloaded oboe v0.4.6
[INFO] [stderr]   Downloaded bevy_input v0.9.1
[INFO] [stderr]   Downloaded bevy_macro_utils v0.9.1
[INFO] [stderr]   Downloaded petgraph v0.6.2
[INFO] [stderr]   Downloaded erased-serde v0.3.24
[INFO] [stderr]   Downloaded encase_derive_impl v0.4.1
[INFO] [stderr]   Downloaded wgpu-hal v0.14.1
[INFO] [stderr]   Downloaded ogg v0.8.0
[INFO] [stderr]   Downloaded lewton v0.10.2
[INFO] [stderr]   Downloaded bevy_audio v0.9.1
[INFO] [stderr]   Downloaded bevy_window v0.9.1
[INFO] [stderr]   Downloaded encase_derive v0.4.1
[INFO] [stderr]   Downloaded khronos-egl v4.1.0
[INFO] [stderr]   Downloaded bevy_gilrs v0.9.1
[INFO] [stderr]   Downloaded bevy_animation v0.9.1
[INFO] [stderr]   Downloaded inflections v1.1.1
[INFO] [stderr]   Downloaded ron v0.8.0
[INFO] [stderr]   Downloaded bevy_core_pipeline v0.9.1
[INFO] [stderr]   Downloaded hexasphere v8.0.0
[INFO] [stderr]   Downloaded wgpu v0.14.2
[INFO] [stderr]   Downloaded gpu-descriptor-types v0.1.1
[INFO] [stderr]   Downloaded block v0.1.6
[INFO] [stderr]   Downloaded core-graphics-types v0.1.1
[INFO] [stderr]   Downloaded bevy_render v0.9.1
[INFO] [stderr]   Downloaded android_logger v0.11.2
[INFO] [stderr]   Downloaded profiling v1.0.7
[INFO] [stderr]   Downloaded bevy_sprite v0.9.1
[INFO] [stderr]   Downloaded ttf-parser v0.17.1
[INFO] [stderr]   Downloaded owned_ttf_parser v0.17.1
[INFO] [stderr]   Downloaded ab_glyph v0.2.18
[INFO] [stderr]   Downloaded xi-unicode v0.3.0
[INFO] [stderr]   Downloaded bevy_text v0.9.1
[INFO] [stderr]   Downloaded hash32 v0.2.1
[INFO] [stderr]   Downloaded hash32-derive v0.1.1
[INFO] [stderr]   Downloaded bevy_ui v0.9.1
[INFO] [stderr]   Downloaded cocoa-foundation v0.1.0
[INFO] [stderr]   Downloaded cocoa v0.24.1
[INFO] [stderr]   Downloaded core-graphics v0.22.3
[INFO] [stderr]   Downloaded raw-window-handle v0.4.3
[INFO] [stderr]   Downloaded x11-dl v2.20.1
[INFO] [stderr]   Downloaded bevy_internal v0.9.1
[INFO] [stderr]   Downloaded bevy v0.9.1
[INFO] [stderr]   Downloaded ndk-sys v0.4.1+23.1.7779620
[INFO] [stderr]   Downloaded spirv v0.2.0+1.5.4
[INFO] [stderr]   Downloaded range-alloc v0.1.2
[INFO] [stderr]   Downloaded filetime v0.2.19
[INFO] [stderr]   Downloaded libloading v0.7.4
[INFO] [stderr]   Downloaded uuid v1.2.2
[INFO] [stderr]   Downloaded bevy_utils v0.9.1
[INFO] [stderr]   Downloaded bytemuck_derive v1.3.0
[INFO] [stderr]   Downloaded bytemuck v1.12.3
[INFO] [stderr]   Downloaded xxhash-rust v0.8.6
[INFO] [stderr]   Downloaded downcast-rs v1.2.0
[INFO] [stderr]   Downloaded kqueue v1.0.7
[INFO] [stderr]   Downloaded cfg_aliases v0.1.1
[INFO] [stderr]   Downloaded fxhash v0.2.1
[INFO] [stderr]   Downloaded metal v0.24.0
[INFO] [stderr]   Downloaded inotify v0.9.6
[INFO] [stderr]   Downloaded tracing-wasm v0.2.1
[INFO] [stderr]   Downloaded gpu-alloc v0.5.3
[INFO] [stderr]   Downloaded objc v0.2.7
[INFO] [stderr]   Downloaded android_log-sys v0.2.0
[INFO] [stderr]   Downloaded const_panic v0.2.7
[INFO] [stderr]   Downloaded gpu-alloc-types v0.2.0
[INFO] [stderr]   Downloaded gpu-descriptor v0.2.3
[INFO] [stderr]   Downloaded objc_exception v0.1.2
[INFO] [stderr]   Downloaded cty v0.2.2
[INFO] [stderr]   Downloaded serde_derive v1.0.151
[INFO] [stderr]   Downloaded enumflags2 v0.7.5
[INFO] [stderr]   Downloaded macro_pub v0.1.0
[INFO] [stderr]   Downloaded chair v0.2.2
[INFO] [stderr]   Downloaded async-lock v2.6.0
[INFO] [stderr]   Downloaded concurrent-queue v2.0.0
[INFO] [stderr]   Downloaded async-executor v1.5.0
[INFO] [stderr]   Downloaded async-task v4.3.0
[INFO] [stderr]   Downloaded glow v0.11.2
[INFO] [stderr]   Downloaded bevy_winit v0.9.1
[INFO] [stderr]   Downloaded bevy_diagnostic v0.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51eb0b5a1e153f6c576a91e885994caf83d271df072b46295e24c3383438f978
[INFO] running `Command { std: "docker" "start" "-a" "51eb0b5a1e153f6c576a91e885994caf83d271df072b46295e24c3383438f978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51eb0b5a1e153f6c576a91e885994caf83d271df072b46295e24c3383438f978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51eb0b5a1e153f6c576a91e885994caf83d271df072b46295e24c3383438f978", kill_on_drop: false }`
[INFO] [stdout] 51eb0b5a1e153f6c576a91e885994caf83d271df072b46295e24c3383438f978
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46c420f7035508939885b1c7f2f86b10c48a32abe905909db38785361de81934
[INFO] running `Command { std: "docker" "start" "-a" "46c420f7035508939885b1c7f2f86b10c48a32abe905909db38785361de81934", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde_derive v1.0.151
[INFO] [stderr]    Compiling serde v1.0.151
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling futures-io v0.3.25
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling concurrent-queue v2.0.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling erased-serde v0.3.24
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling async-task v4.3.0
[INFO] [stderr]    Compiling uuid v1.2.2
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling async-channel v1.8.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.4
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling bevy_ptr v0.9.1
[INFO] [stderr]    Compiling async-lock v2.6.0
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling async-executor v1.5.0
[INFO] [stderr]    Compiling bevy_tasks v0.9.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling ash v0.37.1+1.3.235
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling pp-rs v0.2.1
[INFO] [stderr]    Compiling raw-window-handle v0.5.0
[INFO] [stderr]    Compiling spirv v0.2.0+1.5.4
[INFO] [stderr]    Compiling toml v0.5.10
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling gpu-descriptor-types v0.1.1
[INFO] [stderr]    Compiling gpu-alloc-types v0.2.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling hexf-parse v0.2.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex v1.7.0
[INFO] [stderr]    Compiling wgpu-core v0.14.2
[INFO] [stderr]    Compiling gpu-alloc v0.5.3
[INFO] [stderr]    Compiling bevy_macro_utils v0.9.1
[INFO] [stderr]    Compiling encase_derive_impl v0.4.1
[INFO] [stderr]    Compiling matchers v0.1.0
[INFO] [stderr]    Compiling wgpu-types v0.14.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling profiling v1.0.7
[INFO] [stderr]    Compiling renderdoc-sys v0.7.1
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling glow v0.11.2
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling bytemuck_derive v1.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling bevy_reflect_derive v0.9.1
[INFO] [stderr]    Compiling bevy_ecs_macros v0.9.1
[INFO] [stderr]    Compiling bytemuck v1.12.3
[INFO] [stderr]    Compiling bevy_derive v0.9.1
[INFO] [stderr]    Compiling macro_pub v0.1.0
[INFO] [stderr]    Compiling encase_derive v0.4.1
[INFO] [stderr]    Compiling enumflags2_derive v0.7.4
[INFO] [stderr]    Compiling const_panic v0.2.7
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling xxhash-rust v0.8.6
[INFO] [stderr]    Compiling chair v0.2.2
[INFO] [stderr]    Compiling image v0.24.5
[INFO] [stderr]    Compiling bevy_encase_derive v0.9.1
[INFO] [stderr]    Compiling bevy_render_macros v0.9.1
[INFO] [stderr]    Compiling enumflags2 v0.7.5
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chair-0.2.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_for)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chair-0.2.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_mut_refs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chair-0.2.2/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(decl_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/chair-0.2.2/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(rustc_attrs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chair` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "46c420f7035508939885b1c7f2f86b10c48a32abe905909db38785361de81934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46c420f7035508939885b1c7f2f86b10c48a32abe905909db38785361de81934", kill_on_drop: false }`
[INFO] [stdout] 46c420f7035508939885b1c7f2f86b10c48a32abe905909db38785361de81934
