[INFO] fetching crate arsc-rs 0.1.0...
[INFO] checking arsc-rs-0.1.0 against 760e1de835e253bf28bbcbfee38b5e8ed9ffe074 for pr-133502-27
[INFO] extracting crate arsc-rs 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate arsc-rs 0.1.0
[INFO] finished tweaking crates.io crate arsc-rs 0.1.0
[INFO] tweaked toml for crates.io crate arsc-rs 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arsc-rs 0.1.0 on toolchain 760e1de835e253bf28bbcbfee38b5e8ed9ffe074
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "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" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] [stderr]       Adding memoffset v0.8.0 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:c36f533e8924a726b63f9d01e781fa8c8c28c96d1d595403829afb31452ee0f5" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5
[INFO] running `Command { std: "docker" "start" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5", 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" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5", 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" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]     Checking log v0.4.33
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking arsc-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature `arbitrary_self_types`
[INFO] [stdout]   --> src/lib.rs:20:50
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ops::{CoerceUnsized, Deref, DispatchFromDyn, Receiver},
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: add `#![feature(arbitrary_self_types)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-07-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `arbitrary_self_types`
[INFO] [stdout]   --> src/lib.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl<T: ?Sized, A: Allocator> Receiver for Arsc<T, A> {}
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: add `#![feature(arbitrary_self_types)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-07-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_byte_offsets` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(pointer_byte_offsets)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `receiver_trait`
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(receiver_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0119]: conflicting implementations of trait `Receiver` for type `Arsc<_, _>`
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl<T: ?Sized, A: Allocator> Receiver for Arsc<T, A> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: conflicting implementation in crate `core`:
[INFO] [stdout]            - impl<P, T> Receiver for P
[INFO] [stdout]              where <P as Deref>::Target == T, P: Deref, P: ?Sized, T: ?Sized;
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `arbitrary_self_types`
[INFO] [stdout]   --> src/lib.rs:20:50
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ops::{CoerceUnsized, Deref, DispatchFromDyn, Receiver},
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: add `#![feature(arbitrary_self_types)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-07-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `arbitrary_self_types`
[INFO] [stdout]   --> src/lib.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl<T: ?Sized, A: Allocator> Receiver for Arsc<T, A> {}
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #44874 <https://github.com/rust-lang/rust/issues/44874> for more information
[INFO] [stdout]    = help: add `#![feature(arbitrary_self_types)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-07-27; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_byte_offsets` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(pointer_byte_offsets)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `receiver_trait`
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(receiver_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `receiver_try_iter`
[INFO] [stdout]   |
[INFO] [stdout] 8 - #![feature(receiver_trait)]
[INFO] [stdout] 8 + #![feature(receiver_try_iter)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0119, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0119`.
[INFO] [stdout] 
[INFO] [stdout] error[E0119]: conflicting implementations of trait `std::ops::Receiver` for type `Arsc<_, _>`
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl<T: ?Sized, A: Allocator> Receiver for Arsc<T, A> {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: conflicting implementation in crate `core`:
[INFO] [stdout]            - impl<P, T> std::ops::Receiver for P
[INFO] [stdout]              where <P as Deref>::Target == T, P: Deref, P: ?Sized, T: ?Sized;
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arsc-rs` (lib) due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0119, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0119`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arsc-rs` (lib test) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5", kill_on_drop: false }`
[INFO] [stdout] ba68e6bc02c716c9145f072ec2f44fd487552635c6c6013b088f879bf3e478a5
