[INFO] fetching crate yggdrasil-viewer 0.0.0...
[INFO] testing yggdrasil-viewer-0.0.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate yggdrasil-viewer 0.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate yggdrasil-viewer 0.0.0
[INFO] finished tweaking crates.io crate yggdrasil-viewer 0.0.0
[INFO] tweaked toml for crates.io crate yggdrasil-viewer 0.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate yggdrasil-viewer 0.0.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 30 packages to latest compatible versions
[INFO] [stderr]       Adding svg v0.14.0 (available: v0.18.0)
[INFO] [stderr]       Adding yggdrasil-rt v0.0.16 (available: v0.1.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d24792dac58a6bf86a97c1c6c40433efe41b82f3fd216f19791c2a2a3ad7d350
[INFO] running `Command { std: "docker" "start" "-a" "d24792dac58a6bf86a97c1c6c40433efe41b82f3fd216f19791c2a2a3ad7d350", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d24792dac58a6bf86a97c1c6c40433efe41b82f3fd216f19791c2a2a3ad7d350", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24792dac58a6bf86a97c1c6c40433efe41b82f3fd216f19791c2a2a3ad7d350", kill_on_drop: false }`
[INFO] [stdout] d24792dac58a6bf86a97c1c6c40433efe41b82f3fd216f19791c2a2a3ad7d350
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dcffeda1f15415fba43efc5da839fced354c80523227616070ad52831e3dda8
[INFO] running `Command { std: "docker" "start" "-a" "0dcffeda1f15415fba43efc5da839fced354c80523227616070ad52831e3dda8", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling color-core v0.1.6
[INFO] [stderr]    Compiling distantia v0.0.0
[INFO] [stderr]    Compiling daachorse v1.0.0
[INFO] [stderr]    Compiling svg v0.14.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling projective v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling shape-core v0.1.17
[INFO] [stderr]    Compiling shape-svg v0.0.9
[INFO] [stderr]    Compiling tree-layout v0.0.2
[INFO] [stderr]    Compiling yggdrasil-rt v0.0.16
[INFO] [stderr]    Compiling yggdrasil-viewer v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(return_position_impl_trait_in_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `return_position_impl_trait_in_trait` has been stable since `1.75.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TreeData` and `TreeNode`
[INFO] [stdout]   --> src/plot_svg/mod.rs:10:59
[INFO] [stdout]    |
[INFO] [stdout] 10 | use tree_layout::{layout, Line, NodeInfo, Point, TreeBox, TreeData, TreeNode};
[INFO] [stdout]    |                                                           ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `return_position_impl_trait_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(return_position_impl_trait_in_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yggdrasil-viewer` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0dcffeda1f15415fba43efc5da839fced354c80523227616070ad52831e3dda8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dcffeda1f15415fba43efc5da839fced354c80523227616070ad52831e3dda8", kill_on_drop: false }`
[INFO] [stdout] 0dcffeda1f15415fba43efc5da839fced354c80523227616070ad52831e3dda8