[INFO] fetching crate bucket_queue 2.0.0...
[INFO] testing bucket_queue-2.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate bucket_queue 2.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate bucket_queue 2.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bucket_queue 2.0.0
[INFO] finished tweaking crates.io crate bucket_queue 2.0.0
[INFO] tweaked toml for crates.io crate bucket_queue 2.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] 335135c683a576a2c0da327232e4ea53b5f2605f8a1358538f65c6a77dced198
[INFO] running `Command { std: "docker" "start" "-a" "335135c683a576a2c0da327232e4ea53b5f2605f8a1358538f65c6a77dced198", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "335135c683a576a2c0da327232e4ea53b5f2605f8a1358538f65c6a77dced198", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "335135c683a576a2c0da327232e4ea53b5f2605f8a1358538f65c6a77dced198", kill_on_drop: false }`
[INFO] [stdout] 335135c683a576a2c0da327232e4ea53b5f2605f8a1358538f65c6a77dced198
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 15cc33db4042674c682329d12495a5f5868cecfb5dab24da75311e5e7217b9c7
[INFO] running `Command { std: "docker" "start" "-a" "15cc33db4042674c682329d12495a5f5868cecfb5dab24da75311e5e7217b9c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bucket_queue v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "15cc33db4042674c682329d12495a5f5868cecfb5dab24da75311e5e7217b9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cc33db4042674c682329d12495a5f5868cecfb5dab24da75311e5e7217b9c7", kill_on_drop: false }`
[INFO] [stdout] 15cc33db4042674c682329d12495a5f5868cecfb5dab24da75311e5e7217b9c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e39fd238a2d8fd1d8598698f5b0c6611ed49c1bf8fda672d99daf3a693fb4cf
[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" "4e39fd238a2d8fd1d8598698f5b0c6611ed49c1bf8fda672d99daf3a693fb4cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bucket_queue v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.75s
[INFO] running `Command { std: "docker" "inspect" "4e39fd238a2d8fd1d8598698f5b0c6611ed49c1bf8fda672d99daf3a693fb4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e39fd238a2d8fd1d8598698f5b0c6611ed49c1bf8fda672d99daf3a693fb4cf", kill_on_drop: false }`
[INFO] [stdout] 4e39fd238a2d8fd1d8598698f5b0c6611ed49c1bf8fda672d99daf3a693fb4cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d244fe78df7b2950e35a876f5d83cc9b7e662a07eed15145f0c112861a91318f
[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" "d244fe78df7b2950e35a876f5d83cc9b7e662a07eed15145f0c112861a91318f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bucket_queue-e0e2adcabf215da2
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/custom_queue-6c73b5762a5cd60e
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bucket_queue-9fc3450421153bc4
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test double_ended::it_can_pop_front_and_back_with_maximum_priority ... ok
[INFO] [stdout] test double_ended::it_can_pop_front_and_back_with_minimum_priority ... ok
[INFO] [stdout] test deferrals::it_adds_to_bucket_zero_if_there_are_no_buckets ... ok
[INFO] [stdout] test clear::it_can_clear_deferred_buckets ... ok
[INFO] [stdout] test double_ended::it_can_push_and_pop_front_and_back_with_priority ... ok
[INFO] [stdout] test first_in_first_out::it_can_enqueue_and_dequeue_with_priority ... ok
[INFO] [stdout] test first_in_first_out::it_can_set_the_priority_then_enqueue_and_dequeue ... ok
[INFO] [stdout] test min_and_max_priority::it_can_return_the_min_and_max_priority ... ok
[INFO] [stdout] test len::it_returns_the_number_of_enqueued_items ... ok
[INFO] [stdout] test last_in_first_out::it_can_set_the_priority_then_push_and_pop ... ok
[INFO] [stdout] test nested_bucket_queue::it_can_be_arbitrarily_nested ... ok
[INFO] [stdout] test nested_bucket_queue::it_supports_replacing_nested_buckets_via_deferrals ... ok
[INFO] [stdout] test nested_bucket_queue::it_can_replace_arbitrarily_nested_buckets_via_deferrals ... ok
[INFO] [stdout] test nested_bucket_queue::it_supports_accessing_nested_buckets_via_deferrals ... ok
[INFO] [stdout] test nested_bucket_queue::it_supports_using_a_bucket_queue_as_a_type_of_bucket ... ok
[INFO] [stdout] test replace::it_can_remove_a_bucket_by_replacing_it_with_none ... ok
[INFO] [stdout] test replace::it_can_replace_a_bucket_that_doesnt_exist_yet ... ok
[INFO] [stdout] test replace::it_replaces_a_bucket_in_the_bucket_queue ... ok
[INFO] [stdout] test replace::it_returns_the_bucket_of_replaced_items ... ok
[INFO] [stdout] test is_empty::it_returns_true_if_no_items_are_enqueued ... ok
[INFO] [stdout] test deferrals::it_can_ask_questions_of_buckets_more_than_once ... ok
[INFO] [stdout] test first_in_first_out::it_can_dequeue_with_minimum_priority ... ok
[INFO] [stdout] test last_in_first_out::it_can_pop_with_minimum_priority ... ok
[INFO] [stdout] test last_in_first_out::it_can_pop_with_maximum_priority ... ok
[INFO] [stdout] test last_in_first_out::it_can_push_and_pop_with_priority ... ok
[INFO] [stdout] test double_ended::it_can_set_the_priority_then_push_and_pop_front_and_back ... ok
[INFO] [stdout] test first_in_first_out::it_can_dequeue_with_maximum_priority ... ok
[INFO] [stdout] test clear::it_removes_all_items_from_the_bucket_queue ... ok
[INFO] [stderr]    Doc-tests bucket_queue
[INFO] [stdout] test deferrals::it_prevents_adding_to_the_bucket_more_than_once ... ok
[INFO] [stdout] test deferrals::it_prevents_removing_from_the_bucket_more_than_once ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d244fe78df7b2950e35a876f5d83cc9b7e662a07eed15145f0c112861a91318f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d244fe78df7b2950e35a876f5d83cc9b7e662a07eed15145f0c112861a91318f", kill_on_drop: false }`
[INFO] [stdout] d244fe78df7b2950e35a876f5d83cc9b7e662a07eed15145f0c112861a91318f