[INFO] fetching crate ring-channel 0.11.0...
[INFO] testing ring-channel-0.11.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate ring-channel 0.11.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ring-channel 0.11.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ring-channel 0.11.0
[INFO] finished tweaking crates.io crate ring-channel 0.11.0
[INFO] tweaked toml for crates.io crate ring-channel 0.11.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-strategy v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] fe8a208c1d3f7affd7fc568fefa1cb6bb6876383f6b1c9ec9a9e6920e5fe8a4d
[INFO] running `Command { std: "docker" "start" "-a" "fe8a208c1d3f7affd7fc568fefa1cb6bb6876383f6b1c9ec9a9e6920e5fe8a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe8a208c1d3f7affd7fc568fefa1cb6bb6876383f6b1c9ec9a9e6920e5fe8a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe8a208c1d3f7affd7fc568fefa1cb6bb6876383f6b1c9ec9a9e6920e5fe8a4d", kill_on_drop: false }`
[INFO] [stdout] fe8a208c1d3f7affd7fc568fefa1cb6bb6876383f6b1c9ec9a9e6920e5fe8a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 4d1415307ff718b81702db2963fea2939a2d9562690e6c9c69f81125ffdd347a
[INFO] running `Command { std: "docker" "start" "-a" "4d1415307ff718b81702db2963fea2939a2d9562690e6c9c69f81125ffdd347a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling ring-channel v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.06s
[INFO] running `Command { std: "docker" "inspect" "4d1415307ff718b81702db2963fea2939a2d9562690e6c9c69f81125ffdd347a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d1415307ff718b81702db2963fea2939a2d9562690e6c9c69f81125ffdd347a", kill_on_drop: false }`
[INFO] [stdout] 4d1415307ff718b81702db2963fea2939a2d9562690e6c9c69f81125ffdd347a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] bd4008c5515cc93db74710e3a46625cf84295289c996e7c6dec1175315eda252
[INFO] running `Command { std: "docker" "start" "-a" "bd4008c5515cc93db74710e3a46625cf84295289c996e7c6dec1175315eda252", kill_on_drop: false }`
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling proptest v1.0.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling structmeta-derive v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling structmeta v0.1.4
[INFO] [stderr]    Compiling test-strategy v0.1.2
[INFO] [stderr]    Compiling ring-channel v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `Command { std: "docker" "inspect" "bd4008c5515cc93db74710e3a46625cf84295289c996e7c6dec1175315eda252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4008c5515cc93db74710e3a46625cf84295289c996e7c6dec1175315eda252", kill_on_drop: false }`
[INFO] [stdout] bd4008c5515cc93db74710e3a46625cf84295289c996e7c6dec1175315eda252
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 1dbb7cc54e327e9e375b0ee572a87e29e5b53e129a55c32268d2dccfc8868dad
[INFO] running `Command { std: "docker" "start" "-a" "1dbb7cc54e327e9e375b0ee572a87e29e5b53e129a55c32268d2dccfc8868dad", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ring_channel-814a8a7a845f2619)
[INFO] [stdout] 
[INFO] [stdout] running 61 tests
[INFO] [stdout] test buffer::tests::capacity_returns_the_maximum_buffer_size ... ok
[INFO] [stdout] test atomic::tests::take_removes_item ... ok
[INFO] [stdout] test atomic::tests::falls_back_to_boxing_for_large_types ... ok
[INFO] [stdout] test channel::tests::cloning_receiver_registers_waitlist_slot ... ok
[INFO] [stdout] test channel::tests::cloning_receiver_increments_receivers_counter ... ok
[INFO] [stdout] test atomic::tests::store_inserts_item ... ok
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_senders ... ok
[INFO] [stdout] test atomic::tests::swap_replaces_item ... ok
[INFO] [stdout] test channel::tests::cloning_sender_increments_senders ... ok
[INFO] [stdout] test channel::tests::dropping_receiver_deregisters_waitlist_slot ... ok
[INFO] [stdout] test channel::tests::dropping_receiver_decrements_receivers_counter ... ok
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_receivers ... ok
[INFO] [stdout] test buffer::tests::atomic_option_is_used_when_capacity_is_one ... ok
[INFO] [stdout] test channel::tests::cloning_sender_resets_backoff_flag ... ok
[INFO] [stdout] test channel::tests::endpoints_are_safe_to_share_across_threads ... ok
[INFO] [stdout] test channel::tests::dropping_sender_decrements_senders_counter ... ok
[INFO] [stdout] test channel::tests::receiver_withdraws_waker_if_channel_not_empty ... ok
[INFO] [stdout] test atomic::tests::get_clones_the_item ... ok
[INFO] [stdout] test channel::tests::endpoints_are_safe_to_send_across_threads ... ok
[INFO] [stdout] test buffer::tests::oldest_items_are_overwritten_on_overflow ... ok
[INFO] [stdout] test channel::tests::receiver_stores_most_recent_waker_if_channel_is_empty ... ok
[INFO] [stdout] test channel::tests::ring_channel_is_associated_with_a_single_control_block ... ok
[INFO] [stdout] test channel::tests::receivers_are_equal_if_they_are_associated_with_the_same_ring_channel ... ok
[INFO] [stdout] test channel::tests::send_overwrites_old_messages ... ok
[INFO] [stdout] test channel::tests::sender_yields_once_on_poll_ready_if_backoff_is_true ... ok
[INFO] [stdout] test channel::tests::senders_are_equal_if_they_are_associated_with_the_same_ring_channel ... ok
[INFO] [stdout] test channel::tests::sender_sets_backoff_to_true_if_sink_overwrites_on_send ... ok
[INFO] [stdout] test channel::tests::senders_are_equal_even_if_backoff_is_different ... ok
[INFO] [stdout] test buffer::tests::new_panics_if_capacity_is_zero - should panic ... ok
[INFO] [stdout] test channel::tests::receiver_implements_stream ... ok
[INFO] [stdout] test channel::tests::sender_implements_sink ... ok
[INFO] [stdout] test control::tests::control_block_allocates_buffer_given_capacity ... ok
[INFO] [stdout] test control::tests::control_block_starts_connected ... ok
[INFO] [stdout] test control::tests::control_block_starts_with_reference_counters_equal_to_one ... ok
[INFO] [stdout] test error::tests::recv_error_implements_error_trait ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_disconnect ... ok
[INFO] [stdout] test error::tests::try_recv_error_implements_error_trait ... ok
[INFO] [stdout] test error::tests::send_error_implements_error_trait ... ok
[INFO] [stdout] test waitlist::tests::deregister_deallocates_slot ... ok
[INFO] [stdout] test waitlist::tests::deregister_returns_current_item ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_sink ... ok
[INFO] [stdout] test waitlist::tests::inserts_replaces_current_item ... ok
[INFO] [stdout] test waitlist::tests::pop_removes_one_item_from_any_slot ... ok
[INFO] [stdout] test waitlist::tests::register_allocates_slot ... ok
[INFO] [stdout] test waitlist::tests::get_clones_item ... ok
[INFO] [stdout] test waitlist::tests::remove_takes_item ... ok
[INFO] [stdout] test waitlist::tests::waitlist_starts_empty ... ok
[INFO] [stdout] test channel::tests::recv_fails_on_empty_disconnected_channel ... ok
[INFO] [stdout] test atomic::tests::atomic_option_is_linearizable ... ok
[INFO] [stdout] test buffer::tests::buffer_is_linearizable ... ok
[INFO] [stdout] test channel::tests::try_recv_fails_on_empty_disconnected_channel ... ok
[INFO] [stdout] test channel::tests::try_recv_succeeds_on_non_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::recv_succeeds_on_non_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::send_succeeds_on_connected_channel ... ok
[INFO] [stdout] test channel::tests::recv_succeeds_on_non_empty_disconnected_channel ... ok
[INFO] [stdout] test channel::tests::send_fails_on_disconnected_channel ... ok
[INFO] [stdout] test channel::tests::try_recv_fails_on_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_send ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_disconnect ... ok
[INFO] [stdout] test channel::tests::try_recv_succeeds_on_non_empty_disconnected_channel ... ok
[INFO] [stdout] test waitlist::tests::waitlist_is_linearizable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 61 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 37.78s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ring-channel
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/channel.rs - channel::ring_channel (line 265) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 69) ... ok
[INFO] [stdout] test src/lib.rs - (line 141) ... ok
[INFO] [stdout] test src/lib.rs - (line 108) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1dbb7cc54e327e9e375b0ee572a87e29e5b53e129a55c32268d2dccfc8868dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dbb7cc54e327e9e375b0ee572a87e29e5b53e129a55c32268d2dccfc8868dad", kill_on_drop: false }`
[INFO] [stdout] 1dbb7cc54e327e9e375b0ee572a87e29e5b53e129a55c32268d2dccfc8868dad