[INFO] fetching crate eiz 0.3.0...
[INFO] testing eiz-0.3.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate eiz 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate eiz 0.3.0
[INFO] finished tweaking crates.io crate eiz 0.3.0
[INFO] tweaked toml for crates.io crate eiz 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate eiz 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]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding parking_lot v0.10.2 (available: v0.12.4)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3e36dcf8cfd199dd72a4f0c3086bc120887914677f3addfbda07429633d29f14
[INFO] running `Command { std: "docker" "start" "-a" "3e36dcf8cfd199dd72a4f0c3086bc120887914677f3addfbda07429633d29f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e36dcf8cfd199dd72a4f0c3086bc120887914677f3addfbda07429633d29f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e36dcf8cfd199dd72a4f0c3086bc120887914677f3addfbda07429633d29f14", kill_on_drop: false }`
[INFO] [stdout] 3e36dcf8cfd199dd72a4f0c3086bc120887914677f3addfbda07429633d29f14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 31f29ca9d53969a7c27ad841d93fe1c7195eaf4cfee55c608deea2c148366fc9
[INFO] running `Command { std: "docker" "start" "-a" "31f29ca9d53969a7c27ad841d93fe1c7195eaf4cfee55c608deea2c148366fc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling parking_lot_core v0.7.3
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling eiz v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(alloc_layout_extra, maybe_uninit_extra)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `use_std`
[INFO] [stdout]  --> src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(all(not(test), not(use_std)), no_std)]
[INFO] [stdout]   |                                ^^^^^^^ help: found config with similar value: `feature = "use_std"`
[INFO] [stdout]   |
[INFO] [stdout]   = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(use_std)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(use_std)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_extra` has been stable since 1.60.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(alloc_layout_extra, maybe_uninit_extra)]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:114:63
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 drop((*self.buf.offset(read_masked as isize)).read());
[INFO] [stdout]     |                                                               ^^^^ method not found in `MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:154:74
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let result = unsafe { (*self.0.buf.offset(read_masked as isize)).read() };
[INFO] [stdout]     |                                                                          ^^^^ method not found in `MaybeUninit<T>`
[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 `eiz` (lib) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "31f29ca9d53969a7c27ad841d93fe1c7195eaf4cfee55c608deea2c148366fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f29ca9d53969a7c27ad841d93fe1c7195eaf4cfee55c608deea2c148366fc9", kill_on_drop: false }`
[INFO] [stdout] 31f29ca9d53969a7c27ad841d93fe1c7195eaf4cfee55c608deea2c148366fc9
