[INFO] fetching crate shmalloc 0.2.2...
[INFO] testing shmalloc-0.2.2 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate shmalloc 0.2.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate shmalloc 0.2.2
[INFO] finished tweaking crates.io crate shmalloc 0.2.2
[INFO] tweaked toml for crates.io crate shmalloc 0.2.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate shmalloc 0.2.2 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding linked_list_allocator v0.9.1 (available: v0.10.5)
[INFO] [stderr]       Adding spin v0.9.8 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54034577bc610a16419b0bc0d4cffd6aa33aa9067affc50994261061a88e1c58
[INFO] running `Command { std: "docker" "start" "-a" "54034577bc610a16419b0bc0d4cffd6aa33aa9067affc50994261061a88e1c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54034577bc610a16419b0bc0d4cffd6aa33aa9067affc50994261061a88e1c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54034577bc610a16419b0bc0d4cffd6aa33aa9067affc50994261061a88e1c58", kill_on_drop: false }`
[INFO] [stdout] 54034577bc610a16419b0bc0d4cffd6aa33aa9067affc50994261061a88e1c58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90b2c07cbb1a745a50dc6d553a205385efb9789bbe9c87054f6d4f7d883e9ad4
[INFO] running `Command { std: "docker" "start" "-a" "90b2c07cbb1a745a50dc6d553a205385efb9789bbe9c87054f6d4f7d883e9ad4", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling linked_list_allocator v0.9.1
[INFO] [stderr]    Compiling shmalloc v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `const_fn_fn_ptr_basics` has been stable since 1.61.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(const_fn_fn_ptr_basics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `unsized_const_params`
[INFO] [stdout]   --> src/lib.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     const FILE: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unsized_const_params)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date
[INFO] [stdout]    = note: required for `&'static str` to implement `ConstParamTy_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `unsized_const_params`
[INFO] [stdout]   --> src/lib.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         const FILE: &'static str,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unsized_const_params)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date
[INFO] [stdout]    = note: required for `&'static str` to implement `ConstParamTy_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `unsized_const_params`
[INFO] [stdout]    --> src/lib.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         const FILE: &'static str,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: add `#![feature(unsized_const_params)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date
[INFO] [stdout]     = note: required for `&'static str` to implement `ConstParamTy_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shmalloc` (lib) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "90b2c07cbb1a745a50dc6d553a205385efb9789bbe9c87054f6d4f7d883e9ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b2c07cbb1a745a50dc6d553a205385efb9789bbe9c87054f6d4f7d883e9ad4", kill_on_drop: false }`
[INFO] [stdout] 90b2c07cbb1a745a50dc6d553a205385efb9789bbe9c87054f6d4f7d883e9ad4