[INFO] fetching crate choosen 0.1.0...
[INFO] checking choosen-0.1.0 against c60b92c03ca8a3b101eb9d57f51e2232690638c7 for pr-164148-crater-rollup
[INFO] extracting crate choosen 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate choosen 0.1.0
[INFO] finished tweaking crates.io crate choosen 0.1.0
[INFO] tweaked toml for crates.io crate choosen 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate choosen 0.1.0 on toolchain c60b92c03ca8a3b101eb9d57f51e2232690638c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "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" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to highest compatible versions
[INFO] [stderr]       Adding reservoir-sampler v0.0.1 (available: v0.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20
[INFO] running `Command { std: "docker" "start" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20", 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" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20", 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" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.191
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.8
[INFO] [stderr]     Checking reservoir-sampler v0.0.1
[INFO] [stdout] error[E0658]: use of unstable library feature `liballoc_internals`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/reservoir-sampler-0.0.1/src/lib.rs:44:19
[INFO] [stdout]    |
[INFO] [stdout] 44 |             pool: std::vec::from_elem(Option::<T>::None, n),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(liballoc_internals)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-10-11; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reservoir-sampler` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20", kill_on_drop: false }`
[INFO] [stdout] 723b133362d3b3fcfadaa73776c113bc3277a8e3c79088fa34f6a2ea05f5db20
