[INFO] fetching crate fast_collections 0.64.0... [INFO] checking fast_collections-0.64.0 against master#61cc47e367d7be91e13bcd01e4e96e0e233d4f6d for 2025-12-16-next-solver-global [INFO] extracting crate fast_collections 0.64.0 into /workspace/builds/worker-4-tc1/source [INFO] started tweaking crates.io crate fast_collections 0.64.0 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate fast_collections 0.64.0 [INFO] tweaked toml for crates.io crate fast_collections 0.64.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate fast_collections 0.64.0 on toolchain 61cc47e367d7be91e13bcd01e4e96e0e233d4f6d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "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" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 39 packages to latest compatible versions [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 25987619bbce99f6e65827b489be641781b6cbe95f58d5d71d32b271dac579a9 [INFO] running `Command { std: "docker" "start" "-a" "25987619bbce99f6e65827b489be641781b6cbe95f58d5d71d32b271dac579a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "25987619bbce99f6e65827b489be641781b6cbe95f58d5d71d32b271dac579a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "25987619bbce99f6e65827b489be641781b6cbe95f58d5d71d32b271dac579a9", kill_on_drop: false }` [INFO] [stdout] 25987619bbce99f6e65827b489be641781b6cbe95f58d5d71d32b271dac579a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4d25656be8b92e4c1473bf55e527e9a2d19a96e33853cbc883024d6b886103df [INFO] running `Command { std: "docker" "start" "-a" "4d25656be8b92e4c1473bf55e527e9a2d19a96e33853cbc883024d6b886103df", kill_on_drop: false }` [INFO] [stderr] Compiling rustix v1.1.3 [INFO] [stderr] Checking condtype v1.3.0 [INFO] [stderr] Checking regex-lite v0.1.8 [INFO] [stderr] Checking fast_collections v0.64.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling quote v1.0.42 [INFO] [stdout] warning: unused import: `alloc` [INFO] [stdout] --> src/vec.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{alloc, mem::MaybeUninit}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `generic_arg_infer` has been stable since 1.89.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(generic_arg_infer)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(const_mut_refs)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iterable_slab.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn iter(&self) -> SlabIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 58 | pub fn iter(&self) -> SlabIter<'_, T, N> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iterable_slab.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn iter_mut(&mut self) -> SlabIterMut { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 62 | pub fn iter_mut(&mut self) -> SlabIterMut<'_, T, N> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling syn v2.0.111 [INFO] [stderr] Checking terminal_size v0.4.3 [INFO] [stderr] Checking clap_builder v4.5.53 [INFO] [stderr] Compiling divan-macros v0.1.21 [INFO] [stderr] Checking clap v4.5.53 [INFO] [stderr] Checking divan v0.1.21 [INFO] [stdout] warning: unused import: `alloc` [INFO] [stdout] --> src/vec.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | use core::{alloc, mem::MaybeUninit}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> benches/slab.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `generic_arg_infer` has been stable since 1.89.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(generic_arg_infer)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(const_mut_refs)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `removed` [INFO] [stdout] --> src/vec.rs:353:17 [INFO] [stdout] | [INFO] [stdout] 353 | let removed = vec.swap_remove(0).unwrap(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_removed` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iterable_slab.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn iter(&self) -> SlabIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 58 | pub fn iter(&self) -> SlabIter<'_, T, N> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/iterable_slab.rs:62:21 [INFO] [stdout] | [INFO] [stdout] 62 | pub fn iter_mut(&mut self) -> SlabIterMut { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 62 | pub fn iter_mut(&mut self) -> SlabIterMut<'_, T, N> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.96s [INFO] running `Command { std: "docker" "inspect" "4d25656be8b92e4c1473bf55e527e9a2d19a96e33853cbc883024d6b886103df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d25656be8b92e4c1473bf55e527e9a2d19a96e33853cbc883024d6b886103df", kill_on_drop: false }` [INFO] [stdout] 4d25656be8b92e4c1473bf55e527e9a2d19a96e33853cbc883024d6b886103df