[INFO] fetching crate dyn_list 0.2.1...
[INFO] testing dyn_list-0.2.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate dyn_list 0.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate dyn_list 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate dyn_list 0.2.1
[INFO] tweaked toml for crates.io crate dyn_list 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dyn_list 0.2.1 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] crate crates.io crate dyn_list 0.2.1 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d64655920fec7d349631d71bea702894f5fe11d9ace1d74329070a2af3059e09
[INFO] running `Command { std: "docker" "start" "-a" "d64655920fec7d349631d71bea702894f5fe11d9ace1d74329070a2af3059e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d64655920fec7d349631d71bea702894f5fe11d9ace1d74329070a2af3059e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d64655920fec7d349631d71bea702894f5fe11d9ace1d74329070a2af3059e09", kill_on_drop: false }`
[INFO] [stdout] d64655920fec7d349631d71bea702894f5fe11d9ace1d74329070a2af3059e09
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4f939a7195e9775b1ea1752fc4a12f5fc71efb307d66a22ed7583cf8008c81c
[INFO] running `Command { std: "docker" "start" "-a" "e4f939a7195e9775b1ea1752fc4a12f5fc71efb307d66a22ed7583cf8008c81c", kill_on_drop: false }`
[INFO] [stderr]    Compiling dynode v0.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dynode-0.0.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     ptr_metadata,
[INFO] [stdout] 3 | |     layout_for_ptr,
[INFO] [stdout] 4 | |     allocator_api,
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     maybe_uninit_write_slice
[INFO] [stdout] 9 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `copy_from_slice` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dynode-0.0.0/src/maybe_uninit.rs:406:22
[INFO] [stdout]     |
[INFO] [stdout] 406 |         MaybeUninit::copy_from_slice(&mut dest[..len], &src[..len]);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions:
[INFO] [stdout]       MaybeUninit::<T>::new
[INFO] [stdout]       MaybeUninit::<T>::uninit
[INFO] [stdout]       MaybeUninit::<T>::zeroed
[INFO] [stdout]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/mem/maybe_uninit.rs:307:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `copy_from_slice` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dynode-0.0.0/src/maybe_uninit.rs:486:22
[INFO] [stdout]     |
[INFO] [stdout] 486 |         MaybeUninit::copy_from_slice(&mut self.as_bytes_mut()[..len], &src.as_bytes()[..len]);
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `MaybeUninit<_>` consider using one of the following associated functions:
[INFO] [stdout]       MaybeUninit::<T>::new
[INFO] [stdout]       MaybeUninit::<T>::uninit
[INFO] [stdout]       MaybeUninit::<T>::zeroed
[INFO] [stdout]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/mem/maybe_uninit.rs:307:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dynode` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e4f939a7195e9775b1ea1752fc4a12f5fc71efb307d66a22ed7583cf8008c81c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4f939a7195e9775b1ea1752fc4a12f5fc71efb307d66a22ed7583cf8008c81c", kill_on_drop: false }`
[INFO] [stdout] e4f939a7195e9775b1ea1752fc4a12f5fc71efb307d66a22ed7583cf8008c81c