[INFO] fetching crate callbag 0.6.0...
[INFO] testing callbag-0.6.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate callbag 0.6.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate callbag 0.6.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate callbag 0.6.0
[INFO] finished tweaking crates.io crate callbag 0.6.0
[INFO] tweaked toml for crates.io crate callbag 0.6.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 494b3d47921b756e5f42ad062c01aa26cedfb903a7fbbe702c1a4166a6074d04
[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" "494b3d47921b756e5f42ad062c01aa26cedfb903a7fbbe702c1a4166a6074d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "494b3d47921b756e5f42ad062c01aa26cedfb903a7fbbe702c1a4166a6074d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "494b3d47921b756e5f42ad062c01aa26cedfb903a7fbbe702c1a4166a6074d04", kill_on_drop: false }`
[INFO] [stdout] 494b3d47921b756e5f42ad062c01aa26cedfb903a7fbbe702c1a4166a6074d04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36bee11576ca6dea5520ee1ac689c178dc8931bd82d3cf89ed98cca888f7389d
[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" "36bee11576ca6dea5520ee1ac689c178dc8931bd82d3cf89ed98cca888f7389d", kill_on_drop: false }`
[INFO] [stderr]    Compiling never v0.1.0
[INFO] [stderr]    Compiling callbag v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "36bee11576ca6dea5520ee1ac689c178dc8931bd82d3cf89ed98cca888f7389d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36bee11576ca6dea5520ee1ac689c178dc8931bd82d3cf89ed98cca888f7389d", kill_on_drop: false }`
[INFO] [stdout] 36bee11576ca6dea5520ee1ac689c178dc8931bd82d3cf89ed98cca888f7389d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", 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] a45ec092a16971cc649f567f1a6962bf33b0492e81ed0fd2dd3aaba5015bf272
[INFO] running `Command { std: "docker" "start" "-a" "a45ec092a16971cc649f567f1a6962bf33b0492e81ed0fd2dd3aaba5015bf272", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling futures-io v0.3.18
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling futures-timer v3.0.2
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling async_executors v0.4.2
[INFO] [stderr]    Compiling async_nursery v0.3.1
[INFO] [stderr]    Compiling socket2 v0.4.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling blocking v1.1.0
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling futures-macro v0.3.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling blanket v0.2.0
[INFO] [stderr]    Compiling polling v2.2.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-process v1.3.0
[INFO] [stderr]    Compiling async-std v1.10.0
[INFO] [stderr]    Compiling futures-executor v0.3.18
[INFO] [stderr]    Compiling futures v0.3.18
[INFO] [stderr]    Compiling callbag v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 45.07s
[INFO] running `Command { std: "docker" "inspect" "a45ec092a16971cc649f567f1a6962bf33b0492e81ed0fd2dd3aaba5015bf272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a45ec092a16971cc649f567f1a6962bf33b0492e81ed0fd2dd3aaba5015bf272", kill_on_drop: false }`
[INFO] [stdout] a45ec092a16971cc649f567f1a6962bf33b0492e81ed0fd2dd3aaba5015bf272
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c04174677d2dabeb227860d1f9654541528125c9e37aebb2e837fc232b7efc3e
[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" "c04174677d2dabeb227860d1f9654541528125c9e37aebb2e837fc232b7efc3e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[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 unittests (/opt/rustwide/target/debug/deps/callbag-fdea6449dd3a21f8)
[INFO] [stderr]      Running tests/filter.rs (/opt/rustwide/target/debug/deps/filter-ec8c42dc9e8c7a52)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test it_filters_a_pullable_source ... ok
[INFO] [stderr]      Running tests/flatten.rs (/opt/rustwide/target/debug/deps/flatten-b89bd25858f553c5)
[INFO] [stdout] test it_filters_an_async_finite_listenable_source ... ok
[INFO] [stdout] test it_returns_a_source_that_disposes_upon_upwards_end ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.70s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test it_flattens_a_two_layer_finite_pullable_sources ... ok
[INFO] [stderr]      Running tests/for_each.rs (/opt/rustwide/target/debug/deps/for_each-53e99b707c8bc39d)
[INFO] [stdout] test it_flattens_a_two_layer_async_infinite_listenable_sources ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.20s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test it_iterates_a_finite_pullable_source ... ok
[INFO] [stdout] test it_observes_an_async_finite_listenable_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/from_iter.rs (/opt/rustwide/target/debug/deps/from_iter-c124ef36ab84cdf7)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test it_stops_sending_after_source_completion ... ok
[INFO] [stdout] test it_sends_array_items_iterable_to_a_puller_sink ... ok
[INFO] [stdout] test it_sends_array_entries_iterator_to_a_puller_sink ... ok
[INFO] [stdout] test it_does_not_blow_up_the_stack_when_iterating_something_huge ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.77s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/map.rs (/opt/rustwide/target/debug/deps/map-0dcf7fc785465549)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test it_maps_a_pullable_source ... ok
[INFO] [stderr]      Running tests/scan.rs (/opt/rustwide/target/debug/deps/scan-1fefd040837bfbf6)
[INFO] [stdout] test it_returns_a_source_that_disposes_upon_upwards_end ... ok
[INFO] [stdout] test it_maps_an_async_finite_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.71s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test it_scans_a_pullable_source ... ok
[INFO] [stdout] test it_returns_a_source_that_disposes_upon_upwards_end ... ok
[INFO] [stdout] test it_scans_an_async_finite_listenable_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.70s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests callbag
[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] running `Command { std: "docker" "inspect" "c04174677d2dabeb227860d1f9654541528125c9e37aebb2e837fc232b7efc3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04174677d2dabeb227860d1f9654541528125c9e37aebb2e837fc232b7efc3e", kill_on_drop: false }`
[INFO] [stdout] c04174677d2dabeb227860d1f9654541528125c9e37aebb2e837fc232b7efc3e