[INFO] fetching crate small_vec2 0.1.5...
[INFO] testing small_vec2-0.1.5 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate small_vec2 0.1.5 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate small_vec2 0.1.5
[INFO] finished tweaking crates.io crate small_vec2 0.1.5
[INFO] tweaked toml for crates.io crate small_vec2 0.1.5 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate small_vec2 0.1.5 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d7d23757804cb75aa0c6e24ddac013b45923bc844757865b87922d887935da2d
[INFO] running `Command { std: "docker" "start" "-a" "d7d23757804cb75aa0c6e24ddac013b45923bc844757865b87922d887935da2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7d23757804cb75aa0c6e24ddac013b45923bc844757865b87922d887935da2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d23757804cb75aa0c6e24ddac013b45923bc844757865b87922d887935da2d", kill_on_drop: false }`
[INFO] [stdout] d7d23757804cb75aa0c6e24ddac013b45923bc844757865b87922d887935da2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 445c3e9c2429eda51ada2c3258cffb190a42511090b7e6b4d141f0da78ae8f4a
[INFO] running `Command { std: "docker" "start" "-a" "445c3e9c2429eda51ada2c3258cffb190a42511090b7e6b4d141f0da78ae8f4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling small_vec2 v0.1.5 (/opt/rustwide/workdir)
[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(slice_range)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `derive_default_enum` has been stable since `1.62.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `derive_default_enum` has been stable since 1.62.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(derive_default_enum)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `iter_zip` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(iter_zip)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `maybe_uninit_write_slice` has been stable since 1.93.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(maybe_uninit_write_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `maybe_uninit_uninit_array`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(maybe_uninit_uninit_array)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot specialize on trait `Copy`
[INFO] [stdout]   --> src/extend.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     T: Copy,
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot specialize on trait `Copy`
[INFO] [stdout]   --> src/extend_from_within.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<T: Copy, const N: usize> ExtendFromWithinSpec for SmallVec<T, N> {
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot specialize on trait `Copy`
[INFO] [stdout]   --> src/from.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     T: Copy,
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot specialize on trait `Copy`
[INFO] [stdout]   --> src/write_slice.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T: Copy> SpecWriteSlice<T> for MaybeUninit<T> {
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `write_slice_cloned` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]  --> src/write_slice.rs:9:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |         MaybeUninit::write_slice_cloned(this, src)
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `write_slice` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]   --> src/write_slice.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 |         MaybeUninit::write_slice(this, src)
[INFO] [stdout]    |                      ^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `spec_write_slice` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 14 |         MaybeUninit::spec_write_slice(this, src)
[INFO] [stdout]    |                      +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:121:52
[INFO] [stdout]     |
[INFO] [stdout] 121 |             buf: Storage::from_inline(MaybeUninit::uninit_array()),
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 121 -             buf: Storage::from_inline(MaybeUninit::uninit_array()),
[INFO] [stdout] 121 +             buf: Storage::from_inline(MaybeUninit::uninit()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:260:58
[INFO] [stdout]     |
[INFO] [stdout] 260 |             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 260 -             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout] 260 +             self.buf = Storage::from_inline(MaybeUninit::uninit());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:324:58
[INFO] [stdout]     |
[INFO] [stdout] 324 |             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 324 -             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout] 324 +             self.buf = Storage::from_inline(MaybeUninit::uninit());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:375:58
[INFO] [stdout]     |
[INFO] [stdout] 375 |             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 375 -             self.buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout] 375 +             self.buf = Storage::from_inline(MaybeUninit::uninit());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1227:49
[INFO] [stdout]      |
[INFO] [stdout] 1227 |                     let mut data = MaybeUninit::uninit_array();
[INFO] [stdout]      |                                                 ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]      |
[INFO] [stdout] 1227 -                     let mut data = MaybeUninit::uninit_array();
[INFO] [stdout] 1227 +                     let mut data = MaybeUninit::uninit();
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1258:57
[INFO] [stdout]      |
[INFO] [stdout] 1258 |         let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout]      |                                                         ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]      |
[INFO] [stdout] 1258 -         let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout] 1258 +         let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit();
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `write_slice_cloned` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1259:22
[INFO] [stdout]      |
[INFO] [stdout] 1259 |         MaybeUninit::write_slice_cloned(&mut dst, &array);
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1282:61
[INFO] [stdout]      |
[INFO] [stdout] 1282 |             let mut buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]      |
[INFO] [stdout] 1282 -             let mut buf = Storage::from_inline(MaybeUninit::uninit_array());
[INFO] [stdout] 1282 +             let mut buf = Storage::from_inline(MaybeUninit::uninit());
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `uninit_array` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1459:61
[INFO] [stdout]      |
[INFO] [stdout] 1459 |             let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^ associated function or constant 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/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/mem/maybe_uninit.rs:406:4
[INFO] [stdout] help: there is an associated function `uninit` with a similar name
[INFO] [stdout]      |
[INFO] [stdout] 1459 -             let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit_array();
[INFO] [stdout] 1459 +             let mut dst: [MaybeUninit<T>; N] = MaybeUninit::uninit();
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `small_vec2` (lib) due to 17 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "445c3e9c2429eda51ada2c3258cffb190a42511090b7e6b4d141f0da78ae8f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445c3e9c2429eda51ada2c3258cffb190a42511090b7e6b4d141f0da78ae8f4a", kill_on_drop: false }`
[INFO] [stdout] 445c3e9c2429eda51ada2c3258cffb190a42511090b7e6b4d141f0da78ae8f4a
