[INFO] fetching crate htmeta 0.3.0...
[INFO] testing htmeta-0.3.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate htmeta 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate htmeta 0.3.0
[INFO] finished tweaking crates.io crate htmeta 0.3.0
[INFO] tweaked toml for crates.io crate htmeta 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate htmeta 0.3.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding kdl v4.7.1 (available: v6.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5836f22d4837a8cd1414097cfb56b706fe6365598c934796c118164f9e52ab5d
[INFO] running `Command { std: "docker" "start" "-a" "5836f22d4837a8cd1414097cfb56b706fe6365598c934796c118164f9e52ab5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5836f22d4837a8cd1414097cfb56b706fe6365598c934796c118164f9e52ab5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5836f22d4837a8cd1414097cfb56b706fe6365598c934796c118164f9e52ab5d", kill_on_drop: false }`
[INFO] [stdout] 5836f22d4837a8cd1414097cfb56b706fe6365598c934796c118164f9e52ab5d
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aadfec86e57bfd8c0eee181f07bd3dc92e3e999c8edbd7d5b905fd88a6abf418
[INFO] running `Command { std: "docker" "start" "-a" "aadfec86e57bfd8c0eee181f07bd3dc92e3e999c8edbd7d5b905fd88a6abf418", kill_on_drop: false }`
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling miette-derive v5.10.0
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling miette v5.10.0
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling kdl v4.7.1
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling htmeta v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/lib.rs:327:20
[INFO] [stdout]     |
[INFO] [stdout] 327 |                 && let Some(val) = node.get(0)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/lib.rs:335:20
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 && let Some(content) = node.get(0)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[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 `htmeta` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "aadfec86e57bfd8c0eee181f07bd3dc92e3e999c8edbd7d5b905fd88a6abf418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aadfec86e57bfd8c0eee181f07bd3dc92e3e999c8edbd7d5b905fd88a6abf418", kill_on_drop: false }`
[INFO] [stdout] aadfec86e57bfd8c0eee181f07bd3dc92e3e999c8edbd7d5b905fd88a6abf418