[INFO] fetching crate typed-arena-nomut 0.1.0...
[INFO] testing typed-arena-nomut-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate typed-arena-nomut 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate typed-arena-nomut 0.1.0
[INFO] finished tweaking crates.io crate typed-arena-nomut 0.1.0
[INFO] tweaked toml for crates.io crate typed-arena-nomut 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate typed-arena-nomut 0.1.0 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 64 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 14c9a2bf6a44c9af5df3595d7e3aa2b071bbca0c721ea45453714a0b78c6f073
[INFO] running `Command { std: "docker" "start" "-a" "14c9a2bf6a44c9af5df3595d7e3aa2b071bbca0c721ea45453714a0b78c6f073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c9a2bf6a44c9af5df3595d7e3aa2b071bbca0c721ea45453714a0b78c6f073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c9a2bf6a44c9af5df3595d7e3aa2b071bbca0c721ea45453714a0b78c6f073", kill_on_drop: false }`
[INFO] [stdout] 14c9a2bf6a44c9af5df3595d7e3aa2b071bbca0c721ea45453714a0b78c6f073
[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] 73cab3d3b683aa96dc365bf0f0cd8c17fe1b21e42458e17036674fd9c739d677
[INFO] running `Command { std: "docker" "start" "-a" "73cab3d3b683aa96dc365bf0f0cd8c17fe1b21e42458e17036674fd9c739d677", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling typed-arena-nomut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:493:17
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "73cab3d3b683aa96dc365bf0f0cd8c17fe1b21e42458e17036674fd9c739d677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cab3d3b683aa96dc365bf0f0cd8c17fe1b21e42458e17036674fd9c739d677", kill_on_drop: false }`
[INFO] [stdout] 73cab3d3b683aa96dc365bf0f0cd8c17fe1b21e42458e17036674fd9c739d677
[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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69c0e7484f7c2d5154d43516dd4f8a7e7eb0c66dbd073c1c13102e7232ab8dcc
[INFO] running `Command { std: "docker" "start" "-a" "69c0e7484f7c2d5154d43516dd4f8a7e7eb0c66dbd073c1c13102e7232ab8dcc", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling typed-arena-nomut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:493:17
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `2` is never read
[INFO] [stdout]   --> src/test.rs:14:56
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Node<'a, 'b: 'a>(Option<&'a Node<'a, 'b>>, u32, DropTracker<'b>);
[INFO] [stdout]    |        ---- field in this struct                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:493:17
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/test.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         mem::drop(node);
[INFO] [stdout]    |         ^^^^^^^^^^----^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   argument has type `&Node<'_, '_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 42 -         mem::drop(node);
[INFO] [stdout] 42 +         let _ = node;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/test.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert!((*uninitialized).len() >= 2);
[INFO] [stdout]     |                 ^^-------------^^^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   this raw pointer has type `*mut [MaybeUninit<Dropper>]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[MaybeUninit<Dropper>]`
[INFO] [stdout]    --> src/test.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert!((*uninitialized).len() >= 2);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/slice/mod.rs:114:5
[INFO] [stdout]     = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 167 |         assert!((&(*uninitialized)).len() >= 2);
[INFO] [stdout]     |                 ++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "69c0e7484f7c2d5154d43516dd4f8a7e7eb0c66dbd073c1c13102e7232ab8dcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69c0e7484f7c2d5154d43516dd4f8a7e7eb0c66dbd073c1c13102e7232ab8dcc", kill_on_drop: false }`
[INFO] [stdout] 69c0e7484f7c2d5154d43516dd4f8a7e7eb0c66dbd073c1c13102e7232ab8dcc
[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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0535eea45c5e56863f93db172a0b24f4c8d1c4f0de40b5a12fe10fb1cfd96e42
[INFO] running `Command { std: "docker" "start" "-a" "0535eea45c5e56863f93db172a0b24f4c8d1c4f0de40b5a12fe10fb1cfd96e42", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/lib.rs:493:17
[INFO] [stderr]     |
[INFO] [stderr] 493 |     pub fn iter(&self) -> Iter<T> {
[INFO] [stderr]     |                 ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 493 |     pub fn iter(&self) -> Iter<'_, T> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: `typed-arena-nomut` (lib) generated 1 warning (run `cargo fix --lib -p typed-arena-nomut` to apply 1 suggestion)
[INFO] [stderr] warning: field `2` is never read
[INFO] [stderr]   --> src/test.rs:14:56
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct Node<'a, 'b: 'a>(Option<&'a Node<'a, 'b>>, u32, DropTracker<'b>);
[INFO] [stderr]    |        ---- field in this struct                       ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]   --> src/test.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         mem::drop(node);
[INFO] [stderr]    |         ^^^^^^^^^^----^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   argument has type `&Node<'_, '_>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 42 -         mem::drop(node);
[INFO] [stderr] 42 +         let _ = node;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stderr]    --> src/test.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |         assert!((*uninitialized).len() >= 2);
[INFO] [stderr]     |                 ^^-------------^^^^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   this raw pointer has type `*mut [MaybeUninit<Dropper>]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stderr] note: autoref is being applied to this expression, resulting in: `&[MaybeUninit<Dropper>]`
[INFO] [stderr]    --> src/test.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |         assert!((*uninitialized).len() >= 2);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr] note: method calls to `len` require a reference
[INFO] [stderr]    --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/slice/mod.rs:114:5
[INFO] [stderr]     = note: `#[warn(dangerous_implicit_autorefs)]` on by default
[INFO] [stderr] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stderr]     |
[INFO] [stderr] 167 |         assert!((&(*uninitialized)).len() >= 2);
[INFO] [stderr]     |                 ++                +
[INFO] [stderr] 
[INFO] [stderr] warning: `typed-arena-nomut` (lib test) generated 4 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/typed_arena_nomut-575cc26b5a6e6b21)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test test::arena_as_intended ... ok
[INFO] [stdout] test test::arena_is_send ... ok
[INFO] [stdout] test test::ensure_into_vec_maintains_order_of_allocation ... ok
[INFO] [stdout] test test::size_hint ... ok
[INFO] [stdout] test test::test_alloc_extend ... ok
[INFO] [stdout] test test::iter_mut_low_capacity ... ok
[INFO] [stdout] test test::test_alloc_extend_with_drop_counter ... ok
[INFO] [stdout] test test::test_alloc_uninitialized ... ok
[INFO] [stdout] test test::test_alloc_uninitialized_bools ... ok
[INFO] [stdout] test test::iter_mut_high_capacity ... ok
[INFO] [stdout] test test::test_uninitialized_array ... ok
[INFO] [stdout] test test::test_zero_cap ... ok
[INFO] [stdout] test test::dont_trust_the_iterator_size ... ok
[INFO] [stdout] test test::alloc_uninitialized_with_panic ... ok
[INFO] [stdout] test test::size_hint_high_initial_capacities ... ok
[INFO] [stdout] test test::size_hint_low_initial_capacities ... ok
[INFO] [stdout] test test::size_hint_many_items ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.79s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests typed_arena_nomut
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test src/lib.rs - Arena<T>::alloc_uninitialized (line 320) ... FAILED
[INFO] [stdout] test src/lib.rs - Arena<T>::alloc (line 179) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::into_vec (line 418) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::alloc_extend (line 216) ... ok
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::new (line 117) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::alloc_uninitialized (line 290) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::with_capacity (line 132) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::len (line 154) ... ok
[INFO] [stdout] test src/lib.rs - Arena<u8>::alloc_str (line 524) ... ok
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Arena (line 91) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::iter (line 479) ... ok
[INFO] [stdout] test src/lib.rs - Arena<T>::iter (line 452) ... ok
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Arena<T>::alloc_uninitialized (line 320) stdout ----
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]   --> src/lib.rs:339:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     assert!((*uninitialized).len() >= COUNT); // Ensured by the reserve_extend
[INFO] [stdout]    |             ^^-------------^^^^^^^
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this raw pointer has type `*mut [MaybeUninit<String>]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&[MaybeUninit<String>]`
[INFO] [stdout]   --> src/lib.rs:339:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     assert!((*uninitialized).len() >= COUNT); // Ensured by the reserve_extend
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]   --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/slice/mod.rs:114:5
[INFO] [stdout]    = note: `#[deny(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]    |
[INFO] [stdout] 22 |     assert!((&(*uninitialized)).len() >= COUNT); // Ensured by the reserve_extend
[INFO] [stdout]    |             ++                +
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]   --> src/lib.rs:340:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |     for elem in &mut (*uninitialized)[..COUNT] {
[INFO] [stdout]    |                      ^^-------------^^^^^^^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        this raw pointer has type `*mut [MaybeUninit<String>]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&mut [MaybeUninit<String>]`
[INFO] [stdout]   --> src/lib.rs:340:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |     for elem in &mut (*uninitialized)[..COUNT] {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]    |
[INFO] [stdout] 23 |     for elem in &mut (&mut (*uninitialized))[..COUNT] {
[INFO] [stdout]    |                      +++++                 +
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Arena<T>::alloc_uninitialized (line 320)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0535eea45c5e56863f93db172a0b24f4c8d1c4f0de40b5a12fe10fb1cfd96e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0535eea45c5e56863f93db172a0b24f4c8d1c4f0de40b5a12fe10fb1cfd96e42", kill_on_drop: false }`
[INFO] [stdout] 0535eea45c5e56863f93db172a0b24f4c8d1c4f0de40b5a12fe10fb1cfd96e42
