[INFO] crate ring-channel 0.8.2 is already in cache
[INFO] testing ring-channel-0.8.2 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate ring-channel 0.8.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ring-channel 0.8.2 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ring-channel 0.8.2
[INFO] finished tweaking crates.io crate ring-channel 0.8.2
[INFO] tweaked toml for crates.io crate ring-channel 0.8.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01aa9c2d2cfff3a7a97f3d293c2acbcb7ef917c54097b84392913b50b22824be
[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" "01aa9c2d2cfff3a7a97f3d293c2acbcb7ef917c54097b84392913b50b22824be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01aa9c2d2cfff3a7a97f3d293c2acbcb7ef917c54097b84392913b50b22824be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01aa9c2d2cfff3a7a97f3d293c2acbcb7ef917c54097b84392913b50b22824be", kill_on_drop: false }`
[INFO] [stdout] 01aa9c2d2cfff3a7a97f3d293c2acbcb7ef917c54097b84392913b50b22824be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02cec143cfa875a4cdee640a6b9f139859d624480f0350d9c285696808a8bada
[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" "02cec143cfa875a4cdee640a6b9f139859d624480f0350d9c285696808a8bada", kill_on_drop: false }`
[INFO] [stderr]    Compiling spinning_top v0.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling ring-channel v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.36s
[INFO] running `Command { std: "docker" "inspect" "02cec143cfa875a4cdee640a6b9f139859d624480f0350d9c285696808a8bada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02cec143cfa875a4cdee640a6b9f139859d624480f0350d9c285696808a8bada", kill_on_drop: false }`
[INFO] [stdout] 02cec143cfa875a4cdee640a6b9f139859d624480f0350d9c285696808a8bada
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6a40e9d458906f879f326de1f6c1167df0a02ed9a555f6b8a55aaf695f3be8d
[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" "f6a40e9d458906f879f326de1f6c1167df0a02ed9a555f6b8a55aaf695f3be8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling fragile v1.0.0
[INFO] [stderr]    Compiling downcast v0.10.0
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling clap v2.33.2
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling mockall_derive v0.7.2
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling predicates v1.0.5
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling mockall v0.7.2
[INFO] [stderr]    Compiling proptest-derive v0.1.2
[INFO] [stderr]    Compiling ring-channel v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "f6a40e9d458906f879f326de1f6c1167df0a02ed9a555f6b8a55aaf695f3be8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a40e9d458906f879f326de1f6c1167df0a02ed9a555f6b8a55aaf695f3be8d", kill_on_drop: false }`
[INFO] [stdout] f6a40e9d458906f879f326de1f6c1167df0a02ed9a555f6b8a55aaf695f3be8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9adbc9d4b97f4f68f4b05eb15b3d22d44f150de1cd8dee218399340a6cc8a7e3
[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" "9adbc9d4b97f4f68f4b05eb15b3d22d44f150de1cd8dee218399340a6cc8a7e3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.39s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ring_channel-fe84e934fd4c70f6
[INFO] [stdout] 
[INFO] [stdout] running 43 tests
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_receivers ... ok
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_senders ... ok
[INFO] [stdout] test channel::tests::cloning_receiver_increments_receivers_counter ... ok
[INFO] [stdout] test channel::tests::cloning_sender_increments_senders ... ok
[INFO] [stdout] test buffer::tests::cell ... ok
[INFO] [stdout] test channel::tests::dropping_receiver_decrements_receivers_counter ... ok
[INFO] [stdout] test buffer::tests::queue ... ok
[INFO] [stdout] test channel::tests::dropping_sender_decrements_senders_counter ... 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::senders_are_equal_if_they_are_associated_with_the_same_ring_channel ... ok
[INFO] [stdout] test buffer::tests::capacity ... ok
[INFO] [stdout] test buffer::tests::overflow ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_disconnect ... ok
[INFO] [stdout] test channel::tests::try_recv_fails_on_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::endpoints_are_safe_to_send_across_threads ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_send_all ... 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 error::tests::send_error_implements_error_trait ... ok
[INFO] [stdout] test channel::tests::try_recv_fails_on_empty_disconnected_channel ... ok
[INFO] [stdout] test error::tests::try_recv_error_implements_error_trait ... ok
[INFO] [stdout] test channel::tests::recv_fails_on_empty_disconnected_channel ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_send_all ... ok
[INFO] [stdout] test waitlist::tests::waitlist_starts_empty ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_send ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_disconnect ... ok
[INFO] [stdout] test waitlist::tests::wait_ignores_redundant_wakers ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_send ... ok
[INFO] [stdout] test waitlist::tests::wait_stores_wakers ... ok
[INFO] [stdout] test waitlist::tests::waitlist_is_thread_safe ... ok
[INFO] [stdout] test waitlist::tests::wakers_are_woken_exactly_once ... ok
[INFO] [stdout] test channel::tests::send_overwrites_old_messages ... ok
[INFO] [stdout] test channel::tests::stream ... ok
[INFO] [stdout] test channel::tests::sink ... ok
[INFO] [stdout] test channel::tests::send_fails_on_disconnected_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::recv_succeeds_on_non_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::try_recv_succeeds_on_non_empty_connected_channel ... ok
[INFO] [stdout] test channel::tests::try_recv_succeeds_on_non_empty_disconnected_channel ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 43 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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 201) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - (line 67) ... ok
[INFO] [stdout] test src/lib.rs - (line 100) ... ok
[INFO] [stdout] test src/lib.rs - (line 133) ... ok
[INFO] [stdout] test src/lib.rs - (line 41) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9adbc9d4b97f4f68f4b05eb15b3d22d44f150de1cd8dee218399340a6cc8a7e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9adbc9d4b97f4f68f4b05eb15b3d22d44f150de1cd8dee218399340a6cc8a7e3", kill_on_drop: false }`
[INFO] [stdout] 9adbc9d4b97f4f68f4b05eb15b3d22d44f150de1cd8dee218399340a6cc8a7e3