[INFO] fetching crate concurrent-round-robin 0.1.0... [INFO] testing concurrent-round-robin-0.1.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate concurrent-round-robin 0.1.0 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate concurrent-round-robin 0.1.0 [INFO] finished tweaking crates.io crate concurrent-round-robin 0.1.0 [INFO] tweaked toml for crates.io crate concurrent-round-robin 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate concurrent-round-robin 0.1.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 49 packages to latest compatible versions [INFO] [stderr] Adding dashmap v5.5.3 (available: v6.1.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b5b6204fcab200132912089e37045b0ba357c4006dedb527c95b806c9b8dcdce [INFO] running `Command { std: "docker" "start" "-a" "b5b6204fcab200132912089e37045b0ba357c4006dedb527c95b806c9b8dcdce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b5b6204fcab200132912089e37045b0ba357c4006dedb527c95b806c9b8dcdce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5b6204fcab200132912089e37045b0ba357c4006dedb527c95b806c9b8dcdce", kill_on_drop: false }` [INFO] [stdout] b5b6204fcab200132912089e37045b0ba357c4006dedb527c95b806c9b8dcdce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 48e9abd2da11c187a670f14459b6936b12d07cbd95288ada1b749f44b2f1a875 [INFO] running `Command { std: "docker" "start" "-a" "48e9abd2da11c187a670f14459b6936b12d07cbd95288ada1b749f44b2f1a875", kill_on_drop: false }` [INFO] [stderr] Compiling smallvec v1.15.1 [INFO] [stderr] Compiling hashbrown v0.14.5 [INFO] [stderr] Compiling iana-time-zone v0.1.64 [INFO] [stderr] Compiling chrono v0.4.42 [INFO] [stderr] Compiling parking_lot_core v0.9.11 [INFO] [stderr] Compiling dashmap v5.5.3 [INFO] [stderr] Compiling concurrent-round-robin v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:88:19 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn select(&self) -> Option> { [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] 88 | pub fn select(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.70s [INFO] running `Command { std: "docker" "inspect" "48e9abd2da11c187a670f14459b6936b12d07cbd95288ada1b749f44b2f1a875", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "48e9abd2da11c187a670f14459b6936b12d07cbd95288ada1b749f44b2f1a875", kill_on_drop: false }` [INFO] [stdout] 48e9abd2da11c187a670f14459b6936b12d07cbd95288ada1b749f44b2f1a875 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a9f08ff2c19df33d0f58e8017c09c08aa3de702ed00cd3209e45dd2b901fea02 [INFO] running `Command { std: "docker" "start" "-a" "a9f08ff2c19df33d0f58e8017c09c08aa3de702ed00cd3209e45dd2b901fea02", kill_on_drop: false }` [INFO] [stderr] Compiling concurrent-round-robin v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:88:19 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn select(&self) -> Option> { [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] 88 | pub fn select(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:88:19 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn select(&self) -> Option> { [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] 88 | pub fn select(&self) -> Option> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s [INFO] running `Command { std: "docker" "inspect" "a9f08ff2c19df33d0f58e8017c09c08aa3de702ed00cd3209e45dd2b901fea02", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a9f08ff2c19df33d0f58e8017c09c08aa3de702ed00cd3209e45dd2b901fea02", kill_on_drop: false }` [INFO] [stdout] a9f08ff2c19df33d0f58e8017c09c08aa3de702ed00cd3209e45dd2b901fea02 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 01ac623dc256b5a65b1417c886e8626457be3e24fd7a89ef3f35426d2aba6413 [INFO] running `Command { std: "docker" "start" "-a" "01ac623dc256b5a65b1417c886e8626457be3e24fd7a89ef3f35426d2aba6413", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/lib.rs:88:19 [INFO] [stderr] | [INFO] [stderr] 88 | pub fn select(&self) -> Option> { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 88 | pub fn select(&self) -> Option> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `concurrent-round-robin` (lib) generated 1 warning (run `cargo fix --lib -p concurrent-round-robin` to apply 1 suggestion) [INFO] [stderr] warning: `concurrent-round-robin` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/concurrent_round_robin-71d756c277511ae0) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stderr] Doc-tests concurrent_round_robin [INFO] [stdout] test t ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 17.33s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - WeightedRoundRobinSelector (line 32) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - WeightedRoundRobinSelector (line 32) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc` [INFO] [stdout] --> src/lib.rs:35:16 [INFO] [stdout] | [INFO] [stdout] 6 | let balancer = Arc::new(WeightedRoundRobinSelector::new( [INFO] [stdout] | ^^^ use of undeclared type `Arc` [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 + use std::sync::Arc; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0433`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - WeightedRoundRobinSelector (line 32) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "01ac623dc256b5a65b1417c886e8626457be3e24fd7a89ef3f35426d2aba6413", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "01ac623dc256b5a65b1417c886e8626457be3e24fd7a89ef3f35426d2aba6413", kill_on_drop: false }` [INFO] [stdout] 01ac623dc256b5a65b1417c886e8626457be3e24fd7a89ef3f35426d2aba6413