[INFO] fetching crate flo_stream 0.6.0...
[INFO] testing flo_stream-0.6.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate flo_stream 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flo_stream 0.6.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-0/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures v0.3.12
[INFO] [stderr]   Downloaded futures-executor v0.3.12
[INFO] [stderr]   Downloaded libc v0.2.84
[INFO] [stderr]   Downloaded desync v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2f9fb4cf6ec057a1b631f7dd508eb9f99e7868eba4903cc29446017fdb71d2a
[INFO] running `Command { std: "docker" "start" "-a" "b2f9fb4cf6ec057a1b631f7dd508eb9f99e7868eba4903cc29446017fdb71d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f9fb4cf6ec057a1b631f7dd508eb9f99e7868eba4903cc29446017fdb71d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f9fb4cf6ec057a1b631f7dd508eb9f99e7868eba4903cc29446017fdb71d2a", kill_on_drop: false }`
[INFO] [stdout] b2f9fb4cf6ec057a1b631f7dd508eb9f99e7868eba4903cc29446017fdb71d2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 481f1944f57949fedf09e20c8e020e622376b8f483338e558a55e0bdd360d201
[INFO] running `Command { std: "docker" "start" "-a" "481f1944f57949fedf09e20c8e020e622376b8f483338e558a55e0bdd360d201", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling slab v0.4.2
[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 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 11.18s
[INFO] running `Command { std: "docker" "inspect" "481f1944f57949fedf09e20c8e020e622376b8f483338e558a55e0bdd360d201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481f1944f57949fedf09e20c8e020e622376b8f483338e558a55e0bdd360d201", kill_on_drop: false }`
[INFO] [stdout] 481f1944f57949fedf09e20c8e020e622376b8f483338e558a55e0bdd360d201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2de611fc6811deabbddaa0c799b2903bb435f776318d224d2afbd60531caa60b
[INFO] running `Command { std: "docker" "start" "-a" "2de611fc6811deabbddaa0c799b2903bb435f776318d224d2afbd60531caa60b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.84
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand v0.6.5
[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 15.68s
[INFO] running `Command { std: "docker" "inspect" "2de611fc6811deabbddaa0c799b2903bb435f776318d224d2afbd60531caa60b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2de611fc6811deabbddaa0c799b2903bb435f776318d224d2afbd60531caa60b", kill_on_drop: false }`
[INFO] [stdout] 2de611fc6811deabbddaa0c799b2903bb435f776318d224d2afbd60531caa60b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c85fb38192f58c4316654a31aec6bef7ec84b1eec49d3d64e5ca14fe740c49d3
[INFO] running `Command { std: "docker" "start" "-a" "c85fb38192f58c4316654a31aec6bef7ec84b1eec49d3d64e5ca14fe740c49d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[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_no_subscribers ... ok
[INFO] [stdout] test blocks_if_there_are_insufficient_subscribers ... ok
[INFO] [stdout] test unblocks_if_there_are_sufficient_subscribers ... ok
[INFO] [stdout] test read_from_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 0.03s
[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 complete_when_empty ... ok
[INFO] [stdout] test drop_publisher_after_send_all ... ok
[INFO] [stdout] test complete_on_multiple_subscribers ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_publish ... ok
[INFO] [stdout] test clone_subscribers_after_reading ... ok
[INFO] [stdout] test drop_publisher_with_weak_publisher_after_send_all ... ok
[INFO] [stdout] test read_on_multiple_subscribers ... ok
[INFO] [stdout] test republish_3_times ... ok
[INFO] [stdout] test receive_on_one_subscriber ... ok
[INFO] [stdout] test single_receive_on_one_subscriber ... ok
[INFO] [stdout] test send_all_stream ... ok
[INFO] [stdout] test expiring_removes_oldest_events_first ... ok
[INFO] [stdout] test skip_messages_sent_before_subscription ... ok
[INFO] [stdout] test subscriber_closes_when_publisher_closes ... 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 0.04s
[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] [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]    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 1.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c85fb38192f58c4316654a31aec6bef7ec84b1eec49d3d64e5ca14fe740c49d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c85fb38192f58c4316654a31aec6bef7ec84b1eec49d3d64e5ca14fe740c49d3", kill_on_drop: false }`
[INFO] [stdout] c85fb38192f58c4316654a31aec6bef7ec84b1eec49d3d64e5ca14fe740c49d3