[INFO] fetching crate arc-swap-for-cow 1.7.1...
[INFO] testing arc-swap-for-cow-1.7.1 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate arc-swap-for-cow 1.7.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate arc-swap-for-cow 1.7.1
[INFO] finished tweaking crates.io crate arc-swap-for-cow 1.7.1
[INFO] tweaked toml for crates.io crate arc-swap-for-cow 1.7.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arc-swap-for-cow 1.7.1 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "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" "+beta-2026-03-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 119 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] [stderr]       Adding itertools v0.12.1 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eac0e42249ea187bb9f08bad4b651cec0f199026d2dd1127af7498f80b9a8684
[INFO] running `Command { std: "docker" "start" "-a" "eac0e42249ea187bb9f08bad4b651cec0f199026d2dd1127af7498f80b9a8684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eac0e42249ea187bb9f08bad4b651cec0f199026d2dd1127af7498f80b9a8684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac0e42249ea187bb9f08bad4b651cec0f199026d2dd1127af7498f80b9a8684", kill_on_drop: false }`
[INFO] [stdout] eac0e42249ea187bb9f08bad4b651cec0f199026d2dd1127af7498f80b9a8684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1127deb53126acb1a53898c545f94652bb3342ffa0207e2b2046e3ddafa82134
[INFO] running `Command { std: "docker" "start" "-a" "1127deb53126acb1a53898c545f94652bb3342ffa0207e2b2046e3ddafa82134", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc-swap-for-cow v1.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:142:27
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn reserve_writer(&self) -> NodeReservation {
[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] 142 |     pub fn reserve_writer(&self) -> NodeReservation<'_> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:197:30
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub(crate) fn fast_slots(&self) -> Iter<Debt> {
[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] 197 |     pub(crate) fn fast_slots(&self) -> Iter<'_, Debt> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "1127deb53126acb1a53898c545f94652bb3342ffa0207e2b2046e3ddafa82134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1127deb53126acb1a53898c545f94652bb3342ffa0207e2b2046e3ddafa82134", kill_on_drop: false }`
[INFO] [stdout] 1127deb53126acb1a53898c545f94652bb3342ffa0207e2b2046e3ddafa82134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e17042eb34902235f585bd60b6835e07bf9cc11ecf4a497aba7ef7cbfb6afd5
[INFO] running `Command { std: "docker" "start" "-a" "8e17042eb34902235f585bd60b6835e07bf9cc11ecf4a497aba7ef7cbfb6afd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.42
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling getrandom v0.4.2
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[INFO] [stderr]    Compiling parking_lot_core v0.9.12
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[INFO] [stderr]    Compiling unarray v0.1.4
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling criterion-plot v0.5.0
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[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling adaptive-barrier v1.0.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling rand_xorshift v0.4.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:142:27
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn reserve_writer(&self) -> NodeReservation {
[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] 142 |     pub fn reserve_writer(&self) -> NodeReservation<'_> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:197:30
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub(crate) fn fast_slots(&self) -> Iter<Debt> {
[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] 197 |     pub(crate) fn fast_slots(&self) -> Iter<'_, Debt> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling clap v4.5.60
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling rusty-fork v0.3.1
[INFO] [stderr]    Compiling regex v1.12.3
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[INFO] [stderr]    Compiling serde_derive v1.0.228
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[INFO] [stderr]    Compiling serde_test v1.0.177
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[INFO] [stderr]    Compiling proptest v1.10.0
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling arc-swap-for-cow v1.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `arc_swap` in this scope
[INFO] [stdout]   --> tests/stress.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use arc_swap::strategy::{CaS, DefaultStrategy, IndependentStrategy, Strategy};
[INFO] [stdout]    |     ^^^^^^^^ use of unresolved module or unlinked crate `arc_swap`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `arc_swap`, use `cargo add arc_swap` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `arc_swap`
[INFO] [stdout]   --> tests/stress.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use arc_swap::ArcSwapAny;
[INFO] [stdout]    |     ^^^^^^^^ use of unresolved module or unlinked crate `arc_swap`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `arc_swap`, use `cargo add arc_swap` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arc-swap-for-cow` (test "stress") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0432]: unresolved import `arc_swap`
[INFO] [stdout]  --> tests/random.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use arc_swap::{ArcSwapAny, DefaultStrategy, IndependentStrategy};
[INFO] [stdout]   |     ^^^^^^^^ use of unresolved module or unlinked crate `arc_swap`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `arc_swap`, use `cargo add arc_swap` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arc-swap-for-cow` (test "random") due to 1 previous error
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:142:27
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn reserve_writer(&self) -> NodeReservation {
[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] 142 |     pub fn reserve_writer(&self) -> NodeReservation<'_> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/debt/list.rs:197:30
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub(crate) fn fast_slots(&self) -> Iter<Debt> {
[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] 197 |     pub(crate) fn fast_slots(&self) -> Iter<'_, Debt> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8e17042eb34902235f585bd60b6835e07bf9cc11ecf4a497aba7ef7cbfb6afd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e17042eb34902235f585bd60b6835e07bf9cc11ecf4a497aba7ef7cbfb6afd5", kill_on_drop: false }`
[INFO] [stdout] 8e17042eb34902235f585bd60b6835e07bf9cc11ecf4a497aba7ef7cbfb6afd5
