[INFO] fetching crate runtime-sized-array 0.1.0...
[INFO] testing runtime-sized-array-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate runtime-sized-array 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate runtime-sized-array 0.1.0
[INFO] finished tweaking crates.io crate runtime-sized-array 0.1.0
[INFO] tweaked toml for crates.io crate runtime-sized-array 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate runtime-sized-array 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ead78f9c165b52a1c28d705f87ee37dcc75516b61723e4c19bebb6dca762c081
[INFO] running `Command { std: "docker" "start" "-a" "ead78f9c165b52a1c28d705f87ee37dcc75516b61723e4c19bebb6dca762c081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ead78f9c165b52a1c28d705f87ee37dcc75516b61723e4c19bebb6dca762c081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead78f9c165b52a1c28d705f87ee37dcc75516b61723e4c19bebb6dca762c081", kill_on_drop: false }`
[INFO] [stdout] ead78f9c165b52a1c28d705f87ee37dcc75516b61723e4c19bebb6dca762c081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0d8761f521a31e0e842fabc8e8fe6ec71f330a422998270903b468ec92156d91
[INFO] running `Command { std: "docker" "start" "-a" "0d8761f521a31e0e842fabc8e8fe6ec71f330a422998270903b468ec92156d91", kill_on_drop: false }`
[INFO] [stderr]    Compiling runtime-sized-array v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | #![feature(ptr_const_cast)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rustc_attrs` is internal to the compiler or standard library
[INFO] [stdout]    --> src/lib.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | #![feature(rustc_attrs)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: using it is strongly discouraged
[INFO] [stdout]     = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LayoutError` and `Layout`
[INFO] [stdout]  --> src/array.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::alloc::{Layout, LayoutError};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]    --> src/array_iters.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use std::marker::PhantomData;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_const_cast` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | #![feature(ptr_const_cast)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[diagnostic::on_unimplemented]` can only be applied to trait definitions
[INFO] [stdout]    --> src/array.rs:459:5
[INFO] [stdout]     |
[INFO] [stdout] 459 | /     #[rustc_on_unimplemented(
[INFO] [stdout] 460 | |         message = "array indices are of type `usize` or `Index`",
[INFO] [stdout] 461 | |         label = "array indices are of type `usize` or `Index`"
[INFO] [stdout] 462 | |     )]
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(misplaced_diagnostic_attributes)]` (part of `#[warn(unknown_or_malformed_diagnostic_attributes)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[diagnostic::on_unimplemented]` can only be applied to trait definitions
[INFO] [stdout]    --> src/array.rs:472:5
[INFO] [stdout]     |
[INFO] [stdout] 472 | /     #[rustc_on_unimplemented(
[INFO] [stdout] 473 | |         message = "array indices are of type `usize` or `Index`",
[INFO] [stdout] 474 | |         label = "array indices are of type `usize` or `Index`"
[INFO] [stdout] 475 | |     )]
[INFO] [stdout]     | |______^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_const` found for raw pointer `*mut T` in the current scope
[INFO] [stdout]    --> src/array.rs:359:22
[INFO] [stdout]     |
[INFO] [stdout] 359 |         self.pointer.as_const()
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `cast_const` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 359 -         self.pointer.as_const()
[INFO] [stdout] 359 +         self.pointer.cast_const()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_const` found for raw pointer `*mut T` in the current scope
[INFO] [stdout]    --> src/array_iters.rs:174:37
[INFO] [stdout]     |
[INFO] [stdout] 174 |             let ptr = array.pointer.as_const();
[INFO] [stdout]     |                                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `cast_const` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 174 -             let ptr = array.pointer.as_const();
[INFO] [stdout] 174 +             let ptr = array.pointer.cast_const();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/array.rs:634:13
[INFO] [stdout]     |
[INFO] [stdout] 634 |         let mut arr = Array::new(n)
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[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 `runtime-sized-array` (lib) due to 3 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0d8761f521a31e0e842fabc8e8fe6ec71f330a422998270903b468ec92156d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d8761f521a31e0e842fabc8e8fe6ec71f330a422998270903b468ec92156d91", kill_on_drop: false }`
[INFO] [stdout] 0d8761f521a31e0e842fabc8e8fe6ec71f330a422998270903b468ec92156d91
