[INFO] cloning repository https://github.com/Alpha-Qian/thread-model
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Alpha-Qian/thread-model" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlpha-Qian%2Fthread-model", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlpha-Qian%2Fthread-model'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 600f295cd66a551066b313efac3ccf51f04188fb
[INFO] checking Alpha-Qian/thread-model against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6+rustflags=-Znext-solver=coherence for pr-133502-30
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlpha-Qian%2Fthread-model" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Alpha-Qian/thread-model
[INFO] finished tweaking git repo https://github.com/Alpha-Qian/thread-model
[INFO] tweaked toml for git repo https://github.com/Alpha-Qian/thread-model written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Alpha-Qian/thread-model on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Alpha-Qian/thread-model 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strong_rc v0.1.4
[INFO] [stderr]   Downloaded radium v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf
[INFO] running `Command { std: "docker" "start" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Znext-solver=coherence" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking radium v1.1.1
[INFO] [stderr]     Checking strong_rc v0.1.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 | #![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[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | use alloc::heap;
[INFO] [stdout]     |     ^^^^^^^----
[INFO] [stdout]     |            |
[INFO] [stdout]     |            no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::ptr::Shared`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:139:22
[INFO] [stdout]     |
[INFO] [stdout] 139 | use std::ptr::{self, Shared};
[INFO] [stdout]     |                      ^^^^^^ no `Shared` in `ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative impls are experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:187:17
[INFO] [stdout]     |
[INFO] [stdout] 187 | impl<T: ?Sized> !marker::Send for Rc<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 2026-10-09; 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]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:188:17
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl<T: ?Sized> !marker::Sync for Rc<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 2026-10-09; consider upgrading it if it is out of date
[INFO] [stdout]     = help: use marker types for now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `shared`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | #![feature(shared)]
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `heap_api`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 | #![feature(alloc, heap_api)]
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0374]: implementing `CoerceUnsized` requires a field to be coerced
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:190:1
[INFO] [stdout]     |
[INFO] [stdout] 190 | / impl<T, U> CoerceUnsized<Rc<U>> for Rc<T>
[INFO] [stdout] 191 | | where T: ?Sized + Unsize<U>,
[INFO] [stdout] 192 | |       U: ?Sized {}
[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]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |         Rc::is_unique(this)
[INFO] [stdout]     |         ^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `Rc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying a concrete type for the type parameter `T`
[INFO] [stdout]     |
[INFO] [stdout] 255 |         Rc::</* Type */>::is_unique(this)
[INFO] [stdout]     |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:344:9
[INFO] [stdout]     |
[INFO] [stdout] 344 |         self.inner().strong.get()
[INFO] [stdout]     |         ^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:349:9
[INFO] [stdout]     |
[INFO] [stdout] 349 |         self.inner().strong.set(
[INFO] [stdout]     |         ^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |         self.inner().strong.set(self.strong() - 1);
[INFO] [stdout]     |         ^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 372 |         this.strong()
[INFO] [stdout]     |         ^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/strong_rc-0.1.4/src/lib.rs:381:9
[INFO] [stdout]     |
[INFO] [stdout] 381 |         this.strong() == 1
[INFO] [stdout]     |         ^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0374, 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 `strong_rc` (lib) due to 14 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf", kill_on_drop: false }`
[INFO] [stdout] f1c07e1877b00fcedf235783960ac1f32fce12bb4de32cc794bd17a6929cbacf
