[INFO] fetching crate async_chanx 0.1.0-alpha.1...
[INFO] testing async_chanx-0.1.0-alpha.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async_chanx 0.1.0-alpha.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate async_chanx 0.1.0-alpha.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_chanx 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate async_chanx 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate async_chanx 0.1.0-alpha.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec0c6f67f4a1dbcba91fb6c5151ea773f7f2f6d669c020d772aff0ae68f2cf62
[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" "ec0c6f67f4a1dbcba91fb6c5151ea773f7f2f6d669c020d772aff0ae68f2cf62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec0c6f67f4a1dbcba91fb6c5151ea773f7f2f6d669c020d772aff0ae68f2cf62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0c6f67f4a1dbcba91fb6c5151ea773f7f2f6d669c020d772aff0ae68f2cf62", kill_on_drop: false }`
[INFO] [stdout] ec0c6f67f4a1dbcba91fb6c5151ea773f7f2f6d669c020d772aff0ae68f2cf62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 3610c37473bb7343a1624d899d4b42702226d60b829100e936c95be0024f800c
[INFO] running `Command { std: "docker" "start" "-a" "3610c37473bb7343a1624d899d4b42702226d60b829100e936c95be0024f800c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling pin-project-lite v0.1.11
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling async_chanx v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.62s
[INFO] running `Command { std: "docker" "inspect" "3610c37473bb7343a1624d899d4b42702226d60b829100e936c95be0024f800c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3610c37473bb7343a1624d899d4b42702226d60b829100e936c95be0024f800c", kill_on_drop: false }`
[INFO] [stdout] 3610c37473bb7343a1624d899d4b42702226d60b829100e936c95be0024f800c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da54703fdd091563a3c24ae8e2502e446c022f61d41652067ab79f2dfd6a47d3
[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" "da54703fdd091563a3c24ae8e2502e446c022f61d41652067ab79f2dfd6a47d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-lite v0.2.0
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling vec-arena v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling assert_matches v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling async_executors v0.3.0
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling tinytemplate v1.2.0
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling futures-test v0.3.8
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling async-executor v1.4.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling async-global-executor v1.4.3
[INFO] [stderr]    Compiling async-process v1.0.1
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling async-std v1.8.0
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling async_chanx v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 41.29s
[INFO] running `Command { std: "docker" "inspect" "da54703fdd091563a3c24ae8e2502e446c022f61d41652067ab79f2dfd6a47d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da54703fdd091563a3c24ae8e2502e446c022f61d41652067ab79f2dfd6a47d3", kill_on_drop: false }`
[INFO] [stdout] da54703fdd091563a3c24ae8e2502e446c022f61d41652067ab79f2dfd6a47d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c1934b5effad75530fbb31dc03d7709b3852e813e2fab048a4abb97b1992fdbf
[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" "c1934b5effad75530fbb31dc03d7709b3852e813e2fab048a4abb97b1992fdbf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_chanx-a2bec54860a46d75
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async_chanx
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c1934b5effad75530fbb31dc03d7709b3852e813e2fab048a4abb97b1992fdbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1934b5effad75530fbb31dc03d7709b3852e813e2fab048a4abb97b1992fdbf", kill_on_drop: false }`
[INFO] [stdout] c1934b5effad75530fbb31dc03d7709b3852e813e2fab048a4abb97b1992fdbf