[INFO] fetching crate single_value_channel 1.2.2...
[INFO] testing single_value_channel-1.2.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate single_value_channel 1.2.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate single_value_channel 1.2.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate single_value_channel 1.2.2
[INFO] finished tweaking crates.io crate single_value_channel 1.2.2
[INFO] tweaked toml for crates.io crate single_value_channel 1.2.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c514e4b086deebeb3802f7192c272529216ea2bfe71a5e88dd906d52042b074
[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" "1c514e4b086deebeb3802f7192c272529216ea2bfe71a5e88dd906d52042b074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c514e4b086deebeb3802f7192c272529216ea2bfe71a5e88dd906d52042b074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c514e4b086deebeb3802f7192c272529216ea2bfe71a5e88dd906d52042b074", kill_on_drop: false }`
[INFO] [stdout] 1c514e4b086deebeb3802f7192c272529216ea2bfe71a5e88dd906d52042b074
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-02-22" "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] 06368d65d3a02e7f624bf1c27303e5680f8a10404e3b1fb2c395786323aa5454
[INFO] running `Command { std: "docker" "start" "-a" "06368d65d3a02e7f624bf1c27303e5680f8a10404e3b1fb2c395786323aa5454", kill_on_drop: false }`
[INFO] [stderr]    Compiling single_value_channel v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "06368d65d3a02e7f624bf1c27303e5680f8a10404e3b1fb2c395786323aa5454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06368d65d3a02e7f624bf1c27303e5680f8a10404e3b1fb2c395786323aa5454", kill_on_drop: false }`
[INFO] [stdout] 06368d65d3a02e7f624bf1c27303e5680f8a10404e3b1fb2c395786323aa5454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f559d8a05d2f4a436c45dd0284fd2e8c22e716d835d6825c500485bd87c03ce7
[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" "f559d8a05d2f4a436c45dd0284fd2e8c22e716d835d6825c500485bd87c03ce7", kill_on_drop: false }`
[INFO] [stderr]    Compiling single_value_channel v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "f559d8a05d2f4a436c45dd0284fd2e8c22e716d835d6825c500485bd87c03ce7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f559d8a05d2f4a436c45dd0284fd2e8c22e716d835d6825c500485bd87c03ce7", kill_on_drop: false }`
[INFO] [stdout] f559d8a05d2f4a436c45dd0284fd2e8c22e716d835d6825c500485bd87c03ce7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d45103757491173bde855fed27441ce41a7be48ecba8b0c2e37715a1a24e256
[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" "9d45103757491173bde855fed27441ce41a7be48ecba8b0c2e37715a1a24e256", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 11 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/single_value_channel-80e07fe28dbaffcf)
[INFO] [stdout] test test::error_writing_to_dead_reader ... ok
[INFO] [stdout] test test::no_args_channel ... ok
[INFO] [stdout] test test::send_recv_option ... ok
[INFO] [stdout] test test::updater_has_no_receiver ... ok
[INFO] [stdout] test test::receiver_has_no_updater ... ok
[INFO] [stdout] test test::unwrap_non_debug ... ok
[INFO] [stdout] test test::send_recv_value ... ok
[INFO] [stdout] test test::latest_mut ... ok
[INFO] [stdout] test test::non_blocking_write_during_read ... ok
[INFO] [stdout] test test::multiple_updaters ... ok
[INFO] [stdout] test test::concurrent_send_recv ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests single_value_channel
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9d45103757491173bde855fed27441ce41a7be48ecba8b0c2e37715a1a24e256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d45103757491173bde855fed27441ce41a7be48ecba8b0c2e37715a1a24e256", kill_on_drop: false }`
[INFO] [stdout] 9d45103757491173bde855fed27441ce41a7be48ecba8b0c2e37715a1a24e256