[INFO] fetching crate ring-channel 0.9.0...
[INFO] testing ring-channel-0.9.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate ring-channel 0.9.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ring-channel 0.9.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ring-channel 0.9.0
[INFO] finished tweaking crates.io crate ring-channel 0.9.0
[INFO] tweaked toml for crates.io crate ring-channel 0.9.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mockall v0.10.2
[INFO] [stderr]   Downloaded spinning_top v0.2.4
[INFO] [stderr]   Downloaded proptest v1.0.0
[INFO] [stderr]   Downloaded rand_xorshift v0.3.0
[INFO] [stderr]   Downloaded rusty-fork v0.3.0
[INFO] [stderr]   Downloaded mockall_derive v0.10.2
[INFO] [stderr]   Downloaded proptest-derive v0.3.0
[INFO] [stderr]   Downloaded async-net v1.6.1
[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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 871060c14d1b64463aa8c131e8023c33b406f2a9f0874a57b8b652c67b20d27d
[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" "871060c14d1b64463aa8c131e8023c33b406f2a9f0874a57b8b652c67b20d27d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "871060c14d1b64463aa8c131e8023c33b406f2a9f0874a57b8b652c67b20d27d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871060c14d1b64463aa8c131e8023c33b406f2a9f0874a57b8b652c67b20d27d", kill_on_drop: false }`
[INFO] [stdout] 871060c14d1b64463aa8c131e8023c33b406f2a9f0874a57b8b652c67b20d27d
[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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9939342ca4b3814b4b9caa12581c00216deb6b4aff051c45a5587e626743baf8
[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" "9939342ca4b3814b4b9caa12581c00216deb6b4aff051c45a5587e626743baf8", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling ring-channel v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.69s
[INFO] running `Command { std: "docker" "inspect" "9939342ca4b3814b4b9caa12581c00216deb6b4aff051c45a5587e626743baf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9939342ca4b3814b4b9caa12581c00216deb6b4aff051c45a5587e626743baf8", kill_on_drop: false }`
[INFO] [stdout] 9939342ca4b3814b4b9caa12581c00216deb6b4aff051c45a5587e626743baf8
[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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88608d066c0946fc7d84b819518032284d9dfcf57d4e755aae1a663bd30d6bc6
[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" "88608d066c0946fc7d84b819518032284d9dfcf57d4e755aae1a663bd30d6bc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling downcast v0.10.0
[INFO] [stderr]    Compiling fragile v1.0.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling mockall_derive v0.10.2
[INFO] [stderr]    Compiling async-process v1.2.0
[INFO] [stderr]    Compiling async-net v1.6.1
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling proptest v1.0.0
[INFO] [stderr]    Compiling smol v1.2.5
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling ring-channel v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling mockall v0.10.2
[INFO] [stderr]    Compiling proptest-derive v0.3.0
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 54.60s
[INFO] running `Command { std: "docker" "inspect" "88608d066c0946fc7d84b819518032284d9dfcf57d4e755aae1a663bd30d6bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88608d066c0946fc7d84b819518032284d9dfcf57d4e755aae1a663bd30d6bc6", kill_on_drop: false }`
[INFO] [stdout] 88608d066c0946fc7d84b819518032284d9dfcf57d4e755aae1a663bd30d6bc6
[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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 5d115b0d344d362d8b546c4e03c0f442a651f8602d95338277801246f2fa2adb
[INFO] running `Command { std: "docker" "start" "-a" "5d115b0d344d362d8b546c4e03c0f442a651f8602d95338277801246f2fa2adb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ring_channel-978f87e7dfc5ac63)
[INFO] [stdout] 
[INFO] [stdout] running 43 tests
[INFO] [stdout] test buffer::tests::cell ... ok
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_receivers ... ok
[INFO] [stdout] test channel::tests::cloning_receiver_increments_receivers_counter ... ok
[INFO] [stdout] test channel::tests::channel_is_disconnected_if_there_are_no_senders ... ok
[INFO] [stdout] test channel::tests::receivers_are_equal_if_they_are_associated_with_the_same_ring_channel ... ok
[INFO] [stdout] test channel::tests::ring_channel_is_associated_with_a_single_control_block ... ok
[INFO] [stdout] test channel::tests::cloning_sender_increments_senders ... ok
[INFO] [stdout] test buffer::tests::queue ... ok
[INFO] [stdout] test buffer::tests::capacity ... ok
[INFO] [stdout] test channel::tests::dropping_sender_decrements_senders_counter ... ok
[INFO] [stdout] test channel::tests::dropping_receiver_decrements_receivers_counter ... ok
[INFO] [stdout] test channel::tests::senders_are_equal_if_they_are_associated_with_the_same_ring_channel ... ok
[INFO] [stdout] test buffer::tests::overflow ... ok
[INFO] [stdout] test channel::tests::recv_fails_on_empty_disconnected_channel ... 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::recv_wakes_on_disconnect ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_disconnect ... 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 control::tests::control_block_allocates_buffer_given_capacity ... ok
[INFO] [stdout] test error::tests::send_error_implements_error_trait ... ok
[INFO] [stdout] test error::tests::recv_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 waitlist::tests::wait_ignores_redundant_wakers ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_send ... ok
[INFO] [stdout] test waitlist::tests::waitlist_starts_empty ... ok
[INFO] [stdout] test channel::tests::stream_wakes_on_send_all ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_send ... ok
[INFO] [stdout] test channel::tests::recv_wakes_on_send_all ... ok
[INFO] [stdout] test channel::tests::sink ... ok
[INFO] [stdout] test channel::tests::send_overwrites_old_messages ... ok
[INFO] [stdout] test channel::tests::stream ... ok
[INFO] [stdout] test waitlist::tests::wakers_are_woken_exactly_once ... ok
[INFO] [stdout] test waitlist::tests::wait_stores_wakers ... ok
[INFO] [stdout] test waitlist::tests::waitlist_is_thread_safe ... 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_succeeds_on_non_empty_connected_channel ... ok
[INFO] [stderr]    Doc-tests ring-channel
[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; finished in 8.70s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/channel.rs - channel::ring_channel (line 209) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 104) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 69) ... ok
[INFO] [stdout] test src/lib.rs - (line 137) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5d115b0d344d362d8b546c4e03c0f442a651f8602d95338277801246f2fa2adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d115b0d344d362d8b546c4e03c0f442a651f8602d95338277801246f2fa2adb", kill_on_drop: false }`
[INFO] [stdout] 5d115b0d344d362d8b546c4e03c0f442a651f8602d95338277801246f2fa2adb