[INFO] fetching crate async-resource 0.1.0...
[INFO] testing async-resource-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async-resource 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate async-resource 0.1.0 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-resource 0.1.0
[INFO] finished tweaking crates.io crate async-resource 0.1.0
[INFO] tweaked toml for crates.io crate async-resource 0.1.0 written to /workspace/builds/worker-11/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded option-lock v0.1.0
[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" "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] 9da6355be754e83472c5833dc943c39fdbd304975576c9ca1605202b602524d5
[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" "9da6355be754e83472c5833dc943c39fdbd304975576c9ca1605202b602524d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9da6355be754e83472c5833dc943c39fdbd304975576c9ca1605202b602524d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9da6355be754e83472c5833dc943c39fdbd304975576c9ca1605202b602524d5", kill_on_drop: false }`
[INFO] [stdout] 9da6355be754e83472c5833dc943c39fdbd304975576c9ca1605202b602524d5
[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=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] [stdout] 16ac7964191ab325b0b6d7910a9ab5ffdeaf4a2e37ed65f5f1a45e3f047fed90
[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" "16ac7964191ab325b0b6d7910a9ab5ffdeaf4a2e37ed65f5f1a45e3f047fed90", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling option-lock v0.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling async-resource v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `max_waiters`
[INFO] [stdout]   --> src/pool/mod.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     max_waiters: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.56s
[INFO] running `Command { std: "docker" "inspect" "16ac7964191ab325b0b6d7910a9ab5ffdeaf4a2e37ed65f5f1a45e3f047fed90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ac7964191ab325b0b6d7910a9ab5ffdeaf4a2e37ed65f5f1a45e3f047fed90", kill_on_drop: false }`
[INFO] [stdout] 16ac7964191ab325b0b6d7910a9ab5ffdeaf4a2e37ed65f5f1a45e3f047fed90
[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=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] 2ac1058357835951b21b514411f76a487a271ee471dd8ac4f8229ec86e34967b
[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" "2ac1058357835951b21b514411f76a487a271ee471dd8ac4f8229ec86e34967b", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stdout] warning: field is never read: `max_waiters`
[INFO] [stdout]   --> src/pool/mod.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     max_waiters: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async-resource v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `max_waiters`
[INFO] [stdout]   --> src/pool/mod.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     max_waiters: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.23s
[INFO] running `Command { std: "docker" "inspect" "2ac1058357835951b21b514411f76a487a271ee471dd8ac4f8229ec86e34967b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac1058357835951b21b514411f76a487a271ee471dd8ac4f8229ec86e34967b", kill_on_drop: false }`
[INFO] [stdout] 2ac1058357835951b21b514411f76a487a271ee471dd8ac4f8229ec86e34967b
[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=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] 1db17246ffaeb23eb38f180f5fc4d54582777232245f625e36a6bac8bb53001b
[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" "1db17246ffaeb23eb38f180f5fc4d54582777232245f625e36a6bac8bb53001b", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `max_waiters`
[INFO] [stderr]   --> src/pool/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     max_waiters: Option<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `max_waiters`
[INFO] [stderr]   --> src/pool/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     max_waiters: Option<usize>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_resource-78df850e1bd1bfaa
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test resource::lock::tests::resource_lock_debug ... ok
[INFO] [stdout] test resource::lock::tests::resource_lock_eq_hash ... ok
[INFO] [stdout] test util::dropshot::tests::dropshot_sender_dropped ... ok
[INFO] [stdout] test util::dropshot::tests::dropshot_test_future ... ok
[INFO] [stdout] test util::dropshot::tests::dropshot_receiver_dropped ... ok
[INFO] [stdout] test util::dropshot::tests::dropshot_send_normal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pool-a172402104762362
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_pool_not_sync ... ok
[INFO] [stdout] test test_pool_acquire_order_timeout ... ok
[INFO] [stdout] test test_pool_waiter ... ok
[INFO] [stdout] test test_pool_acquire_order_no_timeout ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests async_resource
[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" "1db17246ffaeb23eb38f180f5fc4d54582777232245f625e36a6bac8bb53001b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db17246ffaeb23eb38f180f5fc4d54582777232245f625e36a6bac8bb53001b", kill_on_drop: false }`
[INFO] [stdout] 1db17246ffaeb23eb38f180f5fc4d54582777232245f625e36a6bac8bb53001b