[INFO] fetching crate flo_stream 0.7.0...
[INFO] testing flo_stream-0.7.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate flo_stream 0.7.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate flo_stream 0.7.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flo_stream 0.7.0
[INFO] finished tweaking crates.io crate flo_stream 0.7.0
[INFO] tweaked toml for crates.io crate flo_stream 0.7.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate flo_stream 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23e5e50c7700aaec2bf99b0d28697c636155bb6dfb2a7b32510617a8e847ddf5
[INFO] running `Command { std: "docker" "start" "-a" "23e5e50c7700aaec2bf99b0d28697c636155bb6dfb2a7b32510617a8e847ddf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23e5e50c7700aaec2bf99b0d28697c636155bb6dfb2a7b32510617a8e847ddf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e5e50c7700aaec2bf99b0d28697c636155bb6dfb2a7b32510617a8e847ddf5", kill_on_drop: false }`
[INFO] [stdout] 23e5e50c7700aaec2bf99b0d28697c636155bb6dfb2a7b32510617a8e847ddf5
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2885cfc4a1dff69ceb87508774f1e4298171687924be96e769a8c87748395a3f
[INFO] running `Command { std: "docker" "start" "-a" "2885cfc4a1dff69ceb87508774f1e4298171687924be96e769a8c87748395a3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling futures-channel v0.3.12
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]    Compiling futures-util v0.3.12
[INFO] [stderr]    Compiling futures-executor v0.3.12
[INFO] [stderr]    Compiling futures v0.3.12
[INFO] [stderr]    Compiling flo_stream v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.36s
[INFO] running `Command { std: "docker" "inspect" "2885cfc4a1dff69ceb87508774f1e4298171687924be96e769a8c87748395a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2885cfc4a1dff69ceb87508774f1e4298171687924be96e769a8c87748395a3f", kill_on_drop: false }`
[INFO] [stdout] 2885cfc4a1dff69ceb87508774f1e4298171687924be96e769a8c87748395a3f
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9defca7f268839ef5bd69ba48b7ef221379ad94bc66c7e9451dc5cb3c8cadbbd
[INFO] running `Command { std: "docker" "start" "-a" "9defca7f268839ef5bd69ba48b7ef221379ad94bc66c7e9451dc5cb3c8cadbbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling desync v0.7.0
[INFO] [stderr]    Compiling flo_stream v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.31s
[INFO] running `Command { std: "docker" "inspect" "9defca7f268839ef5bd69ba48b7ef221379ad94bc66c7e9451dc5cb3c8cadbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9defca7f268839ef5bd69ba48b7ef221379ad94bc66c7e9451dc5cb3c8cadbbd", kill_on_drop: false }`
[INFO] [stdout] 9defca7f268839ef5bd69ba48b7ef221379ad94bc66c7e9451dc5cb3c8cadbbd
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0f4937bd36d8f74293531e81857e3a5ac337394f94179405e63f97af7c2ee3cb
[INFO] running `Command { std: "docker" "start" "-a" "0f4937bd36d8f74293531e81857e3a5ac337394f94179405e63f97af7c2ee3cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flo_stream-4fc4159d99f86f08)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/blocking.rs (/opt/rustwide/target/debug/deps/blocking-cb5253f76e32bbde)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test blocks_if_there_are_no_subscribers ... ok
[INFO] [stdout] test blocks_if_there_are_insufficient_subscribers ... ok
[INFO] [stdout] test read_from_subscribers ... ok
[INFO] [stdout] test unblocks_if_there_are_sufficient_subscribers ... ok
[INFO] [stderr]      Running tests/generator.rs (/opt/rustwide/target/debug/deps/generator-38cc61a1d9a307b5)
[INFO] [stdout] test read_from_thread_late_start ... ok
[INFO] [stdout] test read_from_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test add_one_generator ... ok
[INFO] [stdout] test number_generator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/pubsub.rs (/opt/rustwide/target/debug/deps/pubsub-023f37515ed2d6fd)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test drop_publisher_after_send_all ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_send_all ... ok
[INFO] [stdout] test complete_when_empty ... ok
[INFO] [stdout] test clone_subscribers ... ok
[INFO] [stdout] test read_on_multiple_subscribers ... ok
[INFO] [stdout] test blocks_if_subscribers_are_full ... ok
[INFO] [stdout] test complete_on_multiple_subscribers ... ok
[INFO] [stdout] test clone_subscribers_after_reading ... ok
[INFO] [stdout] test republish_3_times ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_publish ... ok
[INFO] [stdout] test expiring_removes_oldest_events_first ... ok
[INFO] [stdout] test receive_on_one_subscriber ... ok
[INFO] [stdout] test send_all_stream ... ok
[INFO] [stdout] test single_receive_on_one_subscriber ... ok
[INFO] [stdout] test single_receive_on_two_subscribers ... ok
[INFO] [stdout] test subscriber_closes_when_publisher_closes ... ok
[INFO] [stdout] test skip_messages_sent_before_subscription ... ok
[INFO] [stderr]      Running tests/readme.rs (/opt/rustwide/target/debug/deps/readme-5ecb281d2dd4abcb)
[INFO] [stdout] test send_all_drops_stream_when_publisher_dropped ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/sink.rs (/opt/rustwide/target/debug/deps/sink-690692a7e3a6aefb)
[INFO] [stdout] test starts_with_version_number_toml ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test close_sink_same_thread ... ok
[INFO] [stdout] test close_sink ... ok
[INFO] [stdout] test send_stream_via_sink ... ok
[INFO] [stdout] test send_via_sink ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/switching.rs (/opt/rustwide/target/debug/deps/switching-00c8a4eb7ac267fe)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test close_when_switch_is_dropped ... ok
[INFO] [stdout] test switch_stream ... ok
[INFO] [stdout] test switch_after_first_stream_is_closed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flo_stream
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/generator.rs - generator::generator_stream (line 88) ... ok
[INFO] [stdout] test src/lib.rs - (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.84s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0f4937bd36d8f74293531e81857e3a5ac337394f94179405e63f97af7c2ee3cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4937bd36d8f74293531e81857e3a5ac337394f94179405e63f97af7c2ee3cb", kill_on_drop: false }`
[INFO] [stdout] 0f4937bd36d8f74293531e81857e3a5ac337394f94179405e63f97af7c2ee3cb