[INFO] cloning repository https://github.com/miyamofigo/rust-shared-ptr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/miyamofigo/rust-shared-ptr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Frust-shared-ptr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Frust-shared-ptr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4935e3eb4a41b6a03fa22706a0f1cd51bcb81496
[INFO] checking miyamofigo/rust-shared-ptr against try#5f6abd89da253a562ad85d235b9342a3ac336c28 for pr-156114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Frust-shared-ptr" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/miyamofigo/rust-shared-ptr
[INFO] finished tweaking git repo https://github.com/miyamofigo/rust-shared-ptr
[INFO] tweaked toml for git repo https://github.com/miyamofigo/rust-shared-ptr written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/miyamofigo/rust-shared-ptr on toolchain 5f6abd89da253a562ad85d235b9342a3ac336c28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/miyamofigo/rust-shared-ptr 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" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` 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] [stderr]     Blocking waiting for file lock on package cache
[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" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87087752aabd85a6ae3723c4c50a70aa422de12c5e712b40089a6f2cce9a32d5
[INFO] running `Command { std: "docker" "start" "-a" "87087752aabd85a6ae3723c4c50a70aa422de12c5e712b40089a6f2cce9a32d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87087752aabd85a6ae3723c4c50a70aa422de12c5e712b40089a6f2cce9a32d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87087752aabd85a6ae3723c4c50a70aa422de12c5e712b40089a6f2cce9a32d5", kill_on_drop: false }`
[INFO] [stdout] 87087752aabd85a6ae3723c4c50a70aa422de12c5e712b40089a6f2cce9a32d5
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+5f6abd89da253a562ad85d235b9342a3ac336c28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a924b7546ecbff40f9422bf8e15920914b8ad9a09db1cb6ab8bd6abb57e8df6
[INFO] running `Command { std: "docker" "start" "-a" "5a924b7546ecbff40f9422bf8e15920914b8ad9a09db1cb6ab8bd6abb57e8df6", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking shared v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:57:42
[INFO] [stdout]    |
[INFO] [stdout] 57 |           _ptr: NonZero::new(Box::into_raw(box SharedBox {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 58 | |           strong: Cell::new(1),
[INFO] [stdout] 59 | |           weak: Cell::new(1),
[INFO] [stdout] 60 | |           value: value
[INFO] [stdout] 61 | |         })), 
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 57 ~         _ptr: NonZero::new(Box::into_raw(Box::new(SharedBox {
[INFO] [stdout] 58 |           strong: Cell::new(1),
[INFO] [stdout] 59 |           weak: Cell::new(1),
[INFO] [stdout] 60 |           value: value
[INFO] [stdout] 61 ~         }))), 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:417:41
[INFO] [stdout]     |
[INFO] [stdout] 417 |     let x: Shared<Box<_>> = Shared::new(box 5);
[INFO] [stdout]     |                                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 417 -     let x: Shared<Box<_>> = Shared::new(box 5);
[INFO] [stdout] 417 +     let x: Shared<Box<_>> = Shared::new(Box::new(5));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(optin_builtin_traits)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in 1.50.0; see <https://github.com/rust-lang/rust/pull/79336> for more information
[INFO] [stdout]    = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, box_raw)]
[INFO] [stdout]    |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]    = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/lib.rs:57:42
[INFO] [stdout]    |
[INFO] [stdout] 57 |           _ptr: NonZero::new(Box::into_raw(box SharedBox {
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 58 | |           strong: Cell::new(1),
[INFO] [stdout] 59 | |           weak: Cell::new(1),
[INFO] [stdout] 60 | |           value: value
[INFO] [stdout] 61 | |         })), 
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 57 ~         _ptr: NonZero::new(Box::into_raw(Box::new(SharedBox {
[INFO] [stdout] 58 |           strong: Cell::new(1),
[INFO] [stdout] 59 |           weak: Cell::new(1),
[INFO] [stdout] 60 |           value: value
[INFO] [stdout] 61 ~         }))), 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/lib.rs:417:41
[INFO] [stdout]     |
[INFO] [stdout] 417 |     let x: Shared<Box<_>> = Shared::new(box 5);
[INFO] [stdout]     |                                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 417 -     let x: Shared<Box<_>> = Shared::new(box 5);
[INFO] [stdout] 417 +     let x: Shared<Box<_>> = Shared::new(Box::new(5));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(optin_builtin_traits)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in 1.50.0; see <https://github.com/rust-lang/rust/pull/79336> for more information
[INFO] [stdout]    = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, box_raw)]
[INFO] [stdout]    |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]    = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::intrinsics::drop_in_place`
[INFO] [stdout]   --> src/lib.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 | use core::intrinsics::{assume, drop_in_place, abort};
[INFO] [stdout]    |                                ^^^^^^^^^^^^^ no `drop_in_place` in `intrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::nonzero`
[INFO] [stdout]   --> src/lib.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 | use core::nonzero::NonZero;
[INFO] [stdout]    |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | use alloc::heap::deallocate;
[INFO] [stdout]    |            ^^^^ could not find `heap` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `POST_DROP_USIZE` in module `mem`
[INFO] [stdout]    --> src/lib.rs:155:45
[INFO] [stdout]     |
[INFO] [stdout] 155 |           ptr as *const () as usize != mem::POST_DROP_USIZE {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^ not found in `mem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `POST_DROP_USIZE` in module `mem`
[INFO] [stdout]    --> src/lib.rs:354:43
[INFO] [stdout]     |
[INFO] [stdout] 354 |         ptr as *const () as usize != mem::POST_DROP_USIZE {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^ not found in `mem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]   --> src/lib.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<T: ?Sized> !marker::Send for Shared<T> {}
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]   --> src/lib.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<T: ?Sized> !marker::Sync for Shared<T> {}
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]    --> src/lib.rs:317:17
[INFO] [stdout]     |
[INFO] [stdout] 317 | impl<T: ?Sized> !marker::Send for Weak2<T> {}
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]     = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]    --> src/lib.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 | impl<T: ?Sized> !marker::Sync for Weak2<T> {}
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]     = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]   --> src/lib.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(coerce_unsized, core_intrinsics)]
[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: the feature `nonzero` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_raw` has been stable since 1.4.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, box_raw)]
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::intrinsics::drop_in_place`
[INFO] [stdout]   --> src/lib.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 | use core::intrinsics::{assume, drop_in_place, abort};
[INFO] [stdout]    |                                ^^^^^^^^^^^^^ no `drop_in_place` in `intrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::nonzero`
[INFO] [stdout]   --> src/lib.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 | use core::nonzero::NonZero;
[INFO] [stdout]    |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | use alloc::heap::deallocate;
[INFO] [stdout]    |            ^^^^ could not find `heap` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `heap_api`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(heap_api, filling_drop)]
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `filling_drop`
[INFO] [stdout]   --> src/lib.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(heap_api, filling_drop)]
[INFO] [stdout]    |                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `cstring_drop`
[INFO] [stdout]    |
[INFO] [stdout] 11 - #![feature(heap_api, filling_drop)]
[INFO] [stdout] 11 + #![feature(heap_api, cstring_drop)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `POST_DROP_USIZE` in module `mem`
[INFO] [stdout]    --> src/lib.rs:155:45
[INFO] [stdout]     |
[INFO] [stdout] 155 |           ptr as *const () as usize != mem::POST_DROP_USIZE {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^ not found in `mem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `POST_DROP_USIZE` in module `mem`
[INFO] [stdout]    --> src/lib.rs:354:43
[INFO] [stdout]     |
[INFO] [stdout] 354 |         ptr as *const () as usize != mem::POST_DROP_USIZE {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^ not found in `mem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]   --> src/lib.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<T: ?Sized> !marker::Send for Shared<T> {}
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]   --> src/lib.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<T: ?Sized> !marker::Sync for Shared<T> {}
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]    = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]    --> src/lib.rs:317:17
[INFO] [stdout]     |
[INFO] [stdout] 317 | impl<T: ?Sized> !marker::Send for Weak2<T> {}
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]     = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]    --> src/lib.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 | impl<T: ?Sized> !marker::Sync for Weak2<T> {}
[INFO] [stdout]     |                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]     = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-05-03; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]   --> src/lib.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(coerce_unsized, core_intrinsics)]
[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] error[E0374]: implementing `CoerceUnsized` requires a field to be coerced
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl<T: ?Sized+Unsize<U>, U: ?Sized> CoerceUnsized<Shared<U>> for Shared<T> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected a single field to be coerced, none found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0374]: implementing `CoerceUnsized` requires a field to be coerced
[INFO] [stdout]    --> src/lib.rs:320:1
[INFO] [stdout]     |
[INFO] [stdout] 320 | impl<T: ?Sized+Unsize<U>, U: ?Sized> CoerceUnsized<Weak2<U>> for Weak2<T> {}
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected a single field to be coerced, none found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `nonzero` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core, nonzero, alloc, unsize)]
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `box_raw` has been stable since 1.4.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, box_raw)]
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `heap_api`
[INFO] [stdout]   --> src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(heap_api, filling_drop)]
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `filling_drop`
[INFO] [stdout]   --> src/lib.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(heap_api, filling_drop)]
[INFO] [stdout]    |                      ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `cstring_drop`
[INFO] [stdout]    |
[INFO] [stdout] 11 - #![feature(heap_api, filling_drop)]
[INFO] [stdout] 11 + #![feature(heap_api, cstring_drop)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0374]: implementing `CoerceUnsized` requires a field to be coerced
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl<T: ?Sized+Unsize<U>, U: ?Sized> CoerceUnsized<Shared<U>> for Shared<T> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected a single field to be coerced, none found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0374]: implementing `CoerceUnsized` requires a field to be coerced
[INFO] [stdout]    --> src/lib.rs:320:1
[INFO] [stdout]     |
[INFO] [stdout] 320 | impl<T: ?Sized+Unsize<U>, U: ?Sized> CoerceUnsized<Weak2<U>> for Weak2<T> {}
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected a single field to be coerced, none found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Shared::strong_count(&this) == 1
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Shared`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Shared::</* Type */>::strong_count(&this) == 1
[INFO] [stdout]    |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     Shared::weak_count(this) == 0 && Shared::strong_count(this) == 1 
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Shared`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 102 |     Shared::</* Type */>::weak_count(this) == 0 && Shared::strong_count(this) == 1 
[INFO] [stdout]     |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Shared::strong_count(&this) == 1
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Shared`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Shared::</* Type */>::strong_count(&this) == 1
[INFO] [stdout]    |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     Shared::weak_count(this) == 0 && Shared::strong_count(this) == 1 
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Shared`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 102 |     Shared::</* Type */>::weak_count(this) == 0 && Shared::strong_count(this) == 1 
[INFO] [stdout]     |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Weak2<_>`
[INFO] [stdout]    --> src/lib.rs:424:9
[INFO] [stdout]     |
[INFO] [stdout] 424 |     let y = Shared::downgrade(&x);
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `y` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 424 |     let y: Weak2<T> = Shared::downgrade(&x);
[INFO] [stdout]     |          ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Weak2<_>`
[INFO] [stdout]    --> src/lib.rs:431:9
[INFO] [stdout]     |
[INFO] [stdout] 431 |     let y = Shared::downgrade(&x);
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `y` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 431 |     let y: Weak2<T> = Shared::downgrade(&x);
[INFO] [stdout]     |          ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:452:13
[INFO] [stdout]     |
[INFO] [stdout] 452 |     assert!(Shared::strong_count(&a) == 1);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Shared`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 452 |     assert!(Shared::</* Type */>::strong_count(&a) == 1);
[INFO] [stdout]     |                   ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:279:31
[INFO] [stdout]     |
[INFO] [stdout] 279 |           .unwrap_or_else( || unsafe { abort() } ));
[INFO] [stdout]     |                               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:293:31
[INFO] [stdout]     |
[INFO] [stdout] 293 |           .unwrap_or_else( || unsafe { abort() } ));
[INFO] [stdout]     |                               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Weak2<_>`
[INFO] [stdout]    --> src/lib.rs:542:9
[INFO] [stdout]     |
[INFO] [stdout] 542 |     let cow1_weak = Shared::downgrade(&cow0);
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving `cow1_weak` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 542 |     let cow1_weak: Weak2<T> = Shared::downgrade(&cow0);
[INFO] [stdout]     |                  ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0374, E0425, E0432, E0557, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:279:31
[INFO] [stdout]     |
[INFO] [stdout] 279 |           .unwrap_or_else( || unsafe { abort() } ));
[INFO] [stdout]     |                               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:293:31
[INFO] [stdout]     |
[INFO] [stdout] 293 |           .unwrap_or_else( || unsafe { abort() } ));
[INFO] [stdout]     |                               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |     let y = x.clone();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0374, E0425, E0432, E0557, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shared` (lib test) due to 23 previous errors; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `shared` (lib) due to 19 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5a924b7546ecbff40f9422bf8e15920914b8ad9a09db1cb6ab8bd6abb57e8df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a924b7546ecbff40f9422bf8e15920914b8ad9a09db1cb6ab8bd6abb57e8df6", kill_on_drop: false }`
[INFO] [stdout] 5a924b7546ecbff40f9422bf8e15920914b8ad9a09db1cb6ab8bd6abb57e8df6
