[INFO] fetching crate flo_stream 0.6.0...
[INFO] testing flo_stream-0.6.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate flo_stream 0.6.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate flo_stream 0.6.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flo_stream 0.6.0
[INFO] finished tweaking crates.io crate flo_stream 0.6.0
[INFO] tweaked toml for crates.io crate flo_stream 0.6.0 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate flo_stream 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccafa001d6f4dec7bfaa3c5a9c223df347f344e68028c9063f7ca0c3482f72ef
[INFO] running `Command { std: "docker" "start" "-a" "ccafa001d6f4dec7bfaa3c5a9c223df347f344e68028c9063f7ca0c3482f72ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccafa001d6f4dec7bfaa3c5a9c223df347f344e68028c9063f7ca0c3482f72ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccafa001d6f4dec7bfaa3c5a9c223df347f344e68028c9063f7ca0c3482f72ef", kill_on_drop: false }`
[INFO] [stdout] ccafa001d6f4dec7bfaa3c5a9c223df347f344e68028c9063f7ca0c3482f72ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9679bb247df709ab98a3ac254201f605a6fbf10d86a632f2a9fd508b62bcaa9
[INFO] running `Command { std: "docker" "start" "-a" "c9679bb247df709ab98a3ac254201f605a6fbf10d86a632f2a9fd508b62bcaa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[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 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-project-lite v0.2.4
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling futures-channel v0.3.12
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling quote v1.0.8
[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 v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.74s
[INFO] running `Command { std: "docker" "inspect" "c9679bb247df709ab98a3ac254201f605a6fbf10d86a632f2a9fd508b62bcaa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9679bb247df709ab98a3ac254201f605a6fbf10d86a632f2a9fd508b62bcaa9", kill_on_drop: false }`
[INFO] [stdout] c9679bb247df709ab98a3ac254201f605a6fbf10d86a632f2a9fd508b62bcaa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88530918137ac0308b2018f9213ea4de16e6361cea547408b67376a60be1baf7
[INFO] running `Command { std: "docker" "start" "-a" "88530918137ac0308b2018f9213ea4de16e6361cea547408b67376a60be1baf7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling desync v0.5.0
[INFO] [stderr]    Compiling flo_stream v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.87s
[INFO] running `Command { std: "docker" "inspect" "88530918137ac0308b2018f9213ea4de16e6361cea547408b67376a60be1baf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88530918137ac0308b2018f9213ea4de16e6361cea547408b67376a60be1baf7", kill_on_drop: false }`
[INFO] [stdout] 88530918137ac0308b2018f9213ea4de16e6361cea547408b67376a60be1baf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f3a06dd6610be4481824b1249d31013b906678396154c6b8a0ef33edfdf859e
[INFO] running `Command { std: "docker" "start" "-a" "2f3a06dd6610be4481824b1249d31013b906678396154c6b8a0ef33edfdf859e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flo_stream-75102ea1c699f885)
[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-3fa45b49584eae00)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test blocks_if_there_are_insufficient_subscribers ... ok
[INFO] [stdout] test blocks_if_there_are_no_subscribers ... ok
[INFO] [stdout] test read_from_subscribers ... ok
[INFO] [stdout] test unblocks_if_there_are_sufficient_subscribers ... ok
[INFO] [stdout] test read_from_thread ... ok
[INFO] [stdout] test read_from_thread_late_start ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/generator.rs (/opt/rustwide/target/debug/deps/generator-6930d3908a6599cf)
[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 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/pubsub.rs (/opt/rustwide/target/debug/deps/pubsub-07b1d4bb9f170b20)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test blocks_if_subscribers_are_full ... ok
[INFO] [stdout] test clone_subscribers ... ok
[INFO] [stdout] test clone_subscribers_after_reading ... ok
[INFO] [stdout] test drop_publisher_after_send_all ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_publish ... ok
[INFO] [stdout] test complete_on_multiple_subscribers ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_send_all ... ok
[INFO] [stdout] test complete_when_empty ... ok
[INFO] [stdout] test read_on_multiple_subscribers ... ok
[INFO] [stdout] test receive_on_one_subscriber ... ok
[INFO] [stdout] test republish_3_times ... ok
[INFO] [stdout] test send_all_stream ... ok
[INFO] [stdout] test expiring_removes_oldest_events_first ... ok
[INFO] [stdout] test single_receive_on_one_subscriber ... ok
[INFO] [stdout] test subscriber_closes_when_publisher_closes ... ok
[INFO] [stdout] test skip_messages_sent_before_subscription ... ok
[INFO] [stdout] test single_receive_on_two_subscribers ... ok
[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 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/sink.rs (/opt/rustwide/target/debug/deps/sink-c7ed36a4787de5be)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test close_sink_same_thread ... ok
[INFO] [stdout] test send_stream_via_sink ... ok
[INFO] [stdout] test close_sink ... ok
[INFO] [stderr]    Doc-tests flo_stream
[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 0.01s
[INFO] [stdout] 
[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 1.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2f3a06dd6610be4481824b1249d31013b906678396154c6b8a0ef33edfdf859e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f3a06dd6610be4481824b1249d31013b906678396154c6b8a0ef33edfdf859e", kill_on_drop: false }`
[INFO] [stdout] 2f3a06dd6610be4481824b1249d31013b906678396154c6b8a0ef33edfdf859e