[INFO] fetching crate silpkg 0.1.4...
[INFO] testing silpkg-0.1.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate silpkg 0.1.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate silpkg 0.1.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate silpkg 0.1.4
[INFO] tweaked toml for crates.io crate silpkg 0.1.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate silpkg 0.1.4 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate silpkg 0.1.4 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f7146853a95e9f396a6c9c1f77973608598cf840c8dc488e0009ab7b4b63c43
[INFO] running `Command { std: "docker" "start" "-a" "0f7146853a95e9f396a6c9c1f77973608598cf840c8dc488e0009ab7b4b63c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f7146853a95e9f396a6c9c1f77973608598cf840c8dc488e0009ab7b4b63c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f7146853a95e9f396a6c9c1f77973608598cf840c8dc488e0009ab7b4b63c43", kill_on_drop: false }`
[INFO] [stdout] 0f7146853a95e9f396a6c9c1f77973608598cf840c8dc488e0009ab7b4b63c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ebebb58da5f9dab5632e267f14115e02d3e6911d00fd7762ea52bc308c67bc5
[INFO] running `Command { std: "docker" "start" "-a" "0ebebb58da5f9dab5632e267f14115e02d3e6911d00fd7762ea52bc308c67bc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling silpkg-macros v0.2.0
[INFO] [stderr]    Compiling silpkg v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(doc_cfg)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `silpkg` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0ebebb58da5f9dab5632e267f14115e02d3e6911d00fd7762ea52bc308c67bc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ebebb58da5f9dab5632e267f14115e02d3e6911d00fd7762ea52bc308c67bc5", kill_on_drop: false }`
[INFO] [stdout] 0ebebb58da5f9dab5632e267f14115e02d3e6911d00fd7762ea52bc308c67bc5
