[INFO] fetching crate legacygui 0.1.2...
[INFO] testing legacygui-0.1.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate legacygui 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate legacygui 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate legacygui 0.1.2
[INFO] finished tweaking crates.io crate legacygui 0.1.2
[INFO] tweaked toml for crates.io crate legacygui 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate legacygui 0.1.2 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intl-memoizer v0.5.1
[INFO] [stderr]   Downloaded tinystr v0.7.4
[INFO] [stderr]   Downloaded ecolor v0.23.0
[INFO] [stderr]   Downloaded web-time v0.2.2
[INFO] [stderr]   Downloaded diskit v0.1.4
[INFO] [stderr]   Downloaded trash v3.1.2
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.13
[INFO] [stderr]   Downloaded type-map v0.4.0
[INFO] [stderr]   Downloaded unic-langid v0.9.1
[INFO] [stderr]   Downloaded num_enum v0.7.0
[INFO] [stderr]   Downloaded legacytranslate v0.3.1
[INFO] [stderr]   Downloaded dbus-crossroads v0.5.2
[INFO] [stderr]   Downloaded fluent-bundle v0.15.2
[INFO] [stderr]   Downloaded emath v0.23.0
[INFO] [stderr]   Downloaded eframe v0.23.0
[INFO] [stderr]   Downloaded egui v0.23.0
[INFO] [stderr]   Downloaded mp3-metadata v0.3.4
[INFO] [stderr]   Downloaded epaint v0.23.0
[INFO] [stderr]   Downloaded rustix v0.37.26
[INFO] [stderr]   Downloaded id3 v1.8.0
[INFO] [stderr]   Downloaded rodio v0.17.2
[INFO] [stderr]   Downloaded ttf-parser v0.19.2
[INFO] [stderr]   Downloaded simple_logger v4.2.0
[INFO] [stderr]   Downloaded egui-winit v0.23.0
[INFO] [stderr]   Downloaded num_enum_derive v0.7.0
[INFO] [stderr]   Downloaded fluent-syntax v0.11.0
[INFO] [stderr]   Downloaded async-signal v0.2.4
[INFO] [stderr]   Downloaded ogg_metadata v0.4.1
[INFO] [stderr]   Downloaded intl_pluralrules v7.0.2
[INFO] [stderr]   Downloaded fluent v0.16.0
[INFO] [stderr]   Downloaded self_cell v0.10.2
[INFO] [stderr]   Downloaded event-listener v3.0.0
[INFO] [stderr]   Downloaded unic-langid-impl v0.9.1
[INFO] [stderr]   Downloaded ab_glyph v0.2.22
[INFO] [stderr]   Downloaded fluent-langneg v0.13.0
[INFO] [stderr]   Downloaded ogg v0.5.1
[INFO] [stderr]   Downloaded egui_glow v0.23.0
[INFO] [stderr]   Downloaded legacylisten v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43c749cca77b95dd19d16a9929748832a56371f397bdb4df62fe6680fa468ad7
[INFO] running `Command { std: "docker" "start" "-a" "43c749cca77b95dd19d16a9929748832a56371f397bdb4df62fe6680fa468ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43c749cca77b95dd19d16a9929748832a56371f397bdb4df62fe6680fa468ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43c749cca77b95dd19d16a9929748832a56371f397bdb4df62fe6680fa468ad7", kill_on_drop: false }`
[INFO] [stdout] 43c749cca77b95dd19d16a9929748832a56371f397bdb4df62fe6680fa468ad7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5e92a1371424577d67f50ea83b8d318ba8d67f18694569a037659d7c105899b
[INFO] running `Command { std: "docker" "start" "-a" "a5e92a1371424577d67f50ea83b8d318ba8d67f18694569a037659d7c105899b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
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[INFO] [stderr]    Compiling emath v0.23.0
[INFO] [stderr]    Compiling atspi-macros v0.2.0
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[INFO] [stderr]    Compiling epaint v0.23.0
[INFO] [stderr]    Compiling symphonia-metadata v0.5.3
[INFO] [stderr]    Compiling intl-memoizer v0.5.1
[INFO] [stderr]    Compiling accesskit_consumer v0.15.2
[INFO] [stderr]    Compiling zbus v3.14.1
[INFO] [stderr]    Compiling intl_pluralrules v7.0.2
[INFO] [stderr]    Compiling fluent-langneg v0.13.0
[INFO] [stderr]    Compiling fluent-syntax v0.11.0
[INFO] [stderr]    Compiling x11rb-protocol v0.10.0
[INFO] [stderr]    Compiling gethostname v0.2.3
[INFO] [stderr]    Compiling glutin v0.30.10
[INFO] [stderr]    Compiling self_cell v0.10.2
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling time-macros v0.2.15
[INFO] [stderr]    Compiling deranged v0.3.9
[INFO] [stderr]    Compiling fluent-bundle v0.15.2
[INFO] [stderr]    Compiling alsa v0.7.1
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling egui v0.23.0
[INFO] [stderr]    Compiling trash v3.1.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling symphonia-bundle-mp3 v0.5.3
[INFO] [stderr]    Compiling glutin-winit v0.3.0
[INFO] [stderr]    Compiling ogg v0.8.0
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling num_threads v0.1.6
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling time v0.3.30
[INFO] [stderr]    Compiling symphonia v0.5.3
[INFO] [stderr]    Compiling diskit v0.1.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/diskit-0.1.4/src/lib.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | #![feature(io_error_more)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diskit` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a5e92a1371424577d67f50ea83b8d318ba8d67f18694569a037659d7c105899b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e92a1371424577d67f50ea83b8d318ba8d67f18694569a037659d7c105899b", kill_on_drop: false }`
[INFO] [stdout] a5e92a1371424577d67f50ea83b8d318ba8d67f18694569a037659d7c105899b
