[INFO] fetching crate mech-gui 0.1.0...
[INFO] documenting mech-gui-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate mech-gui 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mech-gui 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-gui 0.1.0
[INFO] finished tweaking crates.io crate mech-gui 0.1.0
[INFO] tweaked toml for crates.io crate mech-gui 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mech-utilities v0.1.0
[INFO] [stderr]   Downloaded wayland-egl v0.29.5
[INFO] [stderr]   Downloaded nom-unicode v0.3.0
[INFO] [stderr]   Downloaded websocket-base v0.26.5
[INFO] [stderr]   Downloaded eframe v0.18.0
[INFO] [stderr]   Downloaded glutin v0.28.0
[INFO] [stderr]   Downloaded egui_glow v0.18.1
[INFO] [stderr]   Downloaded atomic_refcell v0.1.10
[INFO] [stderr]   Downloaded emath v0.18.0
[INFO] [stderr]   Downloaded egui-winit v0.18.0
[INFO] [stderr]   Downloaded egui v0.18.1
[INFO] [stderr]   Downloaded arboard v2.1.1
[INFO] [stderr]   Downloaded webbrowser v0.7.1
[INFO] [stderr]   Downloaded mech-core v0.1.0
[INFO] [stderr]   Downloaded websocket v0.26.5
[INFO] [stderr]   Downloaded mech-syntax v0.1.0
[INFO] [stderr]   Downloaded x11rb v0.9.0
[INFO] [stderr]   Downloaded epaint v0.18.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d85e1a36cec83a58ffb3720c6f17032b5801d0d3f2758dee38d24056849e17a7
[INFO] running `Command { std: "docker" "start" "-a" "d85e1a36cec83a58ffb3720c6f17032b5801d0d3f2758dee38d24056849e17a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d85e1a36cec83a58ffb3720c6f17032b5801d0d3f2758dee38d24056849e17a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d85e1a36cec83a58ffb3720c6f17032b5801d0d3f2758dee38d24056849e17a7", kill_on_drop: false }`
[INFO] [stdout] d85e1a36cec83a58ffb3720c6f17032b5801d0d3f2758dee38d24056849e17a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83346b242cd13051725cb10c327c8ad42ab298657844e237d17517a214edb2c3
[INFO] running `Command { std: "docker" "start" "-a" "83346b242cd13051725cb10c327c8ad42ab298657844e237d17517a214edb2c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
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[INFO] [stderr]     Checking downcast-rs v1.2.0
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[INFO] [stderr]    Compiling x11-dl v2.21.0
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[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
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[INFO] [stderr]    Compiling winit v0.26.1
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[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking simd-adler32 v0.3.5
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[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking raw-window-handle v0.4.3
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.8
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.6
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking nix v0.22.3
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
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[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
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[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling num-rational v0.4.1
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[INFO] [stderr]     Checking nom-unicode v0.3.0
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[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking png v0.17.8
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking calloop v0.9.3
[INFO] [stderr]     Checking x11rb v0.9.0
[INFO] [stderr]    Compiling bytemuck_derive v1.4.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.24
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]     Checking websocket v0.26.5
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]     Checking wayland-egl v0.29.5
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking emath v0.18.0
[INFO] [stderr]     Checking image v0.24.6
[INFO] [stderr]     Checking thiserror v1.0.40
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking epaint v0.18.1
[INFO] [stderr]     Checking egui v0.18.1
[INFO] [stderr]     Checking mech-core v0.1.0
[INFO] [stderr]     Checking arboard v2.1.1
[INFO] [stderr]     Checking egui_glow v0.18.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mech-core-0.1.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mech-core-0.1.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(concat_idents)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mech-core-0.1.0/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iter_intersperse)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mech-core-0.1.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(drain_filter)]
[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 `mech-core` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "83346b242cd13051725cb10c327c8ad42ab298657844e237d17517a214edb2c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83346b242cd13051725cb10c327c8ad42ab298657844e237d17517a214edb2c3", kill_on_drop: false }`
[INFO] [stdout] 83346b242cd13051725cb10c327c8ad42ab298657844e237d17517a214edb2c3
