[INFO] cloning repository https://github.com/Ling-yunchi/rm-unused-img
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ling-yunchi/rm-unused-img" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLing-yunchi%2Frm-unused-img", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLing-yunchi%2Frm-unused-img'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4c1cd338cfe24ac75d7c050a0b10305f8086d1a
[INFO] documenting Ling-yunchi/rm-unused-img against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLing-yunchi%2Frm-unused-img" "/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/Ling-yunchi/rm-unused-img 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 git repo https://github.com/Ling-yunchi/rm-unused-img
[INFO] finished tweaking git repo https://github.com/Ling-yunchi/rm-unused-img
[INFO] tweaked toml for git repo https://github.com/Ling-yunchi/rm-unused-img written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Ling-yunchi/rm-unused-img 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]  Downloading crates ...
[INFO] [stderr]   Downloaded iced_core v0.9.0
[INFO] [stderr]   Downloaded iced_style v0.8.0
[INFO] [stderr]   Downloaded iced_winit v0.9.1
[INFO] [stderr]   Downloaded iced_futures v0.6.0
[INFO] [stderr]   Downloaded glyph_brush v0.7.7
[INFO] [stderr]   Downloaded wgpu_glyph v0.19.0
[INFO] [stderr]   Downloaded iced_native v0.10.3
[INFO] [stderr]   Downloaded iced_graphics v0.8.0
[INFO] [stderr]   Downloaded iced v0.9.0
[INFO] [stderr]   Downloaded iced_wgpu v0.10.0
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49a95a2f2bd54551621490566b3b4781ed1eb511f8f83ee92bb8f2ffdfd03bc6
[INFO] running `Command { std: "docker" "start" "-a" "49a95a2f2bd54551621490566b3b4781ed1eb511f8f83ee92bb8f2ffdfd03bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49a95a2f2bd54551621490566b3b4781ed1eb511f8f83ee92bb8f2ffdfd03bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a95a2f2bd54551621490566b3b4781ed1eb511f8f83ee92bb8f2ffdfd03bc6", kill_on_drop: false }`
[INFO] [stdout] 49a95a2f2bd54551621490566b3b4781ed1eb511f8f83ee92bb8f2ffdfd03bc6
[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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63f46f88baf16bc9f80f18f6caf30169c597ec4bb12b9506433d4917515e9d1f
[INFO] running `Command { std: "docker" "start" "-a" "63f46f88baf16bc9f80f18f6caf30169c597ec4bb12b9506433d4917515e9d1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
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[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
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[INFO] [stderr]    Compiling parking_lot_core v0.9.7
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[INFO] [stderr]    Compiling freetype-sys v0.13.1
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[INFO] [stderr]    Compiling palette v0.6.1
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[INFO] [stderr]     Checking dirs-sys-next v0.1.2
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[INFO] [stderr]    Compiling toml_datetime v0.6.2
[INFO] [stderr]    Compiling serde_spanned v0.6.2
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling crossfont v0.5.1
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
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[INFO] [stderr]    Compiling toml_edit v0.19.9
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[INFO] [stderr]     Checking nix v0.22.3
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
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[INFO] [stderr]     Checking glam v0.21.3
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
[INFO] [stderr]    Compiling encase_derive_impl v0.3.0
[INFO] [stderr]     Checking ab_glyph v0.2.21
[INFO] [stderr]     Checking ordered-float v3.7.0
[INFO] [stderr]    Compiling find-crate v0.6.3
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking glyph_brush_layout v0.2.3
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking raw-window-handle v0.3.4
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[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling async-io v1.13.0
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[INFO] [stderr]    Compiling toml v0.7.4
[INFO] [stderr]     Checking const_panic v0.2.8
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[INFO] [stderr]    Compiling system-deps v6.1.0
[INFO] [stderr]     Checking glyph_brush_draw_cache v0.1.5
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking guillotiere v0.6.2
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling bytemuck_derive v1.4.1
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]    Compiling foreign-types-macros v0.2.3
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[INFO] [stderr]    Compiling phf_macros v0.11.1
[INFO] [stderr]    Compiling palette_derive v0.6.1
[INFO] [stderr]    Compiling encase_derive v0.3.0
[INFO] [stderr]    Compiling glib-sys v0.16.3
[INFO] [stderr]    Compiling gobject-sys v0.16.3
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[INFO] [stderr]     Checking bytemuck v1.13.1
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[INFO] [stderr]     Checking calloop v0.10.5
[INFO] [stderr]    Compiling pest v2.6.0
[INFO] [stderr]     Checking naga v0.11.1
[INFO] [stderr]    Compiling atk-sys v0.16.0
[INFO] [stderr]     Checking safe_arch v0.5.2
[INFO] [stderr]     Checking tiny-skia-path v0.7.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.16.3
[INFO] [stderr]    Compiling cairo-sys-rs v0.16.3
[INFO] [stderr]    Compiling pango-sys v0.16.3
[INFO] [stderr]    Compiling gtk-sys v0.16.0
[INFO] [stderr]     Checking encase v0.3.0
[INFO] [stderr]     Checking phf v0.11.1
[INFO] [stderr]     Checking tiny-skia v0.7.0
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling pathfinder_simd v0.5.1
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking iced_core v0.9.0
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking iced_futures v0.6.0
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking iced_style v0.8.0
[INFO] [stderr]     Checking font-kit v0.10.1
[INFO] [stderr]     Checking iced_native v0.10.3
[INFO] [stderr]     Checking clipboard_x11 v0.4.0
[INFO] [stderr]     Checking iced_graphics v0.8.0
[INFO] [stderr]     Checking wgpu-hal v0.15.4
[INFO] [stderr]     Checking wgpu-core v0.15.1
[INFO] [stderr]     Checking wgpu v0.15.1
[INFO] [stderr]     Checking wgpu_glyph v0.19.0
[INFO] [stderr]     Checking iced_wgpu v0.10.0
[INFO] [stderr]     Checking smithay-clipboard v0.6.6
[INFO] [stderr]     Checking sctk-adwaita v0.4.3
[INFO] [stderr]     Checking clipboard_wayland v0.2.0
[INFO] [stderr]     Checking window_clipboard v0.2.4
[INFO] [stderr]     Checking winit v0.27.5
[INFO] [stderr]     Checking iced_winit v0.9.1
[INFO] [stderr]     Checking iced v0.9.0
[INFO] [stderr]  Documenting rm-unused-img v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(once_cell)]
[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 document `rm-unused-img`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name rm_unused_img src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=8bc853a4de73b723 -L dependency=/opt/rustwide/target/debug/deps --extern iced=/opt/rustwide/target/debug/deps/libiced-959b420285cebcc8.rmeta --extern iced_graphics=/opt/rustwide/target/debug/deps/libiced_graphics-92ca38cac9a05761.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-9dbcd636dd9c7344.rmeta --extern rfd=/opt/rustwide/target/debug/deps/librfd-8102b76f2f1a0818.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "63f46f88baf16bc9f80f18f6caf30169c597ec4bb12b9506433d4917515e9d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f46f88baf16bc9f80f18f6caf30169c597ec4bb12b9506433d4917515e9d1f", kill_on_drop: false }`
[INFO] [stdout] 63f46f88baf16bc9f80f18f6caf30169c597ec4bb12b9506433d4917515e9d1f
