[INFO] fetching crate concurrent-round-robin 0.1.0...
[INFO] testing concurrent-round-robin-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate concurrent-round-robin 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate concurrent-round-robin 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4e5b971d6e8c9ae45257e90a32d59cb341978ee411f84cfd8f9822b50d33508
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d4e5b971d6e8c9ae45257e90a32d59cb341978ee411f84cfd8f9822b50d33508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4e5b971d6e8c9ae45257e90a32d59cb341978ee411f84cfd8f9822b50d33508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e5b971d6e8c9ae45257e90a32d59cb341978ee411f84cfd8f9822b50d33508", kill_on_drop: false }`
[INFO] [stdout] d4e5b971d6e8c9ae45257e90a32d59cb341978ee411f84cfd8f9822b50d33508
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25047b5e89ff211c972089b7db2370a9999a930ccbec7268671efb5241b82e74
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "25047b5e89ff211c972089b7db2370a9999a930ccbec7268671efb5241b82e74", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling dashmap v5.1.0
[INFO] [stderr]    Compiling concurrent-round-robin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "25047b5e89ff211c972089b7db2370a9999a930ccbec7268671efb5241b82e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25047b5e89ff211c972089b7db2370a9999a930ccbec7268671efb5241b82e74", kill_on_drop: false }`
[INFO] [stdout] 25047b5e89ff211c972089b7db2370a9999a930ccbec7268671efb5241b82e74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cdf0ec4119f9116cb5a703530559cebe4f06a9b854c3a4874b0d2ecec18125e6
[INFO] running `Command { std: "docker" "start" "-a" "cdf0ec4119f9116cb5a703530559cebe4f06a9b854c3a4874b0d2ecec18125e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrent-round-robin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "cdf0ec4119f9116cb5a703530559cebe4f06a9b854c3a4874b0d2ecec18125e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf0ec4119f9116cb5a703530559cebe4f06a9b854c3a4874b0d2ecec18125e6", kill_on_drop: false }`
[INFO] [stdout] cdf0ec4119f9116cb5a703530559cebe4f06a9b854c3a4874b0d2ecec18125e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 549cd3f70d5eed1abf1580abe293f694437b6fb3ad8d568c772fb8f0c906ba3e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "549cd3f70d5eed1abf1580abe293f694437b6fb3ad8d568c772fb8f0c906ba3e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concurrent_round_robin-475c7dfdade99523)
[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 16.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concurrent-round-robin
[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:34:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | let balancer = Arc::new(WeightedRoundRobinSelector::new(
[INFO] [stdout]   |                ^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::Arc;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 0.14s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "549cd3f70d5eed1abf1580abe293f694437b6fb3ad8d568c772fb8f0c906ba3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "549cd3f70d5eed1abf1580abe293f694437b6fb3ad8d568c772fb8f0c906ba3e", kill_on_drop: false }`
[INFO] [stdout] 549cd3f70d5eed1abf1580abe293f694437b6fb3ad8d568c772fb8f0c906ba3e