[INFO] fetching crate eventually-util 0.4.0...
[INFO] testing eventually-util-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate eventually-util 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate eventually-util 0.4.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eventually-util 0.4.0
[INFO] finished tweaking crates.io crate eventually-util 0.4.0
[INFO] tweaked toml for crates.io crate eventually-util 0.4.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded eventually-core v0.4.0
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02b78acd5074ec8ebd7aea73398df00087c18cd1991816632567daa640d39bdc
[INFO] running `Command { std: "docker" "start" "-a" "02b78acd5074ec8ebd7aea73398df00087c18cd1991816632567daa640d39bdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02b78acd5074ec8ebd7aea73398df00087c18cd1991816632567daa640d39bdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b78acd5074ec8ebd7aea73398df00087c18cd1991816632567daa640d39bdc", kill_on_drop: false }`
[INFO] [stdout] 02b78acd5074ec8ebd7aea73398df00087c18cd1991816632567daa640d39bdc
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f19aecab573ad5354c9fe0f57b9438223829745d42ddacde91391df1899505f
[INFO] running `Command { std: "docker" "start" "-a" "4f19aecab573ad5354c9fe0f57b9438223829745d42ddacde91391df1899505f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling eventually-core v0.4.0
[INFO] [stderr]    Compiling eventually-util v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.41s
[INFO] running `Command { std: "docker" "inspect" "4f19aecab573ad5354c9fe0f57b9438223829745d42ddacde91391df1899505f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f19aecab573ad5354c9fe0f57b9438223829745d42ddacde91391df1899505f", kill_on_drop: false }`
[INFO] [stdout] 4f19aecab573ad5354c9fe0f57b9438223829745d42ddacde91391df1899505f
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e37508839e3c36c765f90a52f6d668f08b42dcae4ff2c551a10b5d48468da5f0
[INFO] running `Command { std: "docker" "start" "-a" "e37508839e3c36c765f90a52f6d668f08b42dcae4ff2c551a10b5d48468da5f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling eventually-util v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]    --> src/inmemory/store.rs:479:9
[INFO] [stdout]     |
[INFO] [stdout] 479 |         tokio::join!(join_handle_1, join_handle_2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `$crate::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]    --> src/inmemory/store.rs:479:9
[INFO] [stdout]     |
[INFO] [stdout] 479 |         tokio::join!(join_handle_1, join_handle_2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `$crate::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.96s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e37508839e3c36c765f90a52f6d668f08b42dcae4ff2c551a10b5d48468da5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37508839e3c36c765f90a52f6d668f08b42dcae4ff2c551a10b5d48468da5f0", kill_on_drop: false }`
[INFO] [stdout] e37508839e3c36c765f90a52f6d668f08b42dcae4ff2c551a10b5d48468da5f0
[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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e5069dae8bdcdaa7fa230b56cf5a74a3dc39aaedc8d16702732917c65a72ca8b
[INFO] running `Command { std: "docker" "start" "-a" "e5069dae8bdcdaa7fa230b56cf5a74a3dc39aaedc8d16702732917c65a72ca8b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout] running 7 tests
[INFO] [stderr]    --> src/inmemory/store.rs:479:9
[INFO] [stderr]     |
[INFO] [stderr] 479 |         tokio::join!(join_handle_1, join_handle_2);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `$crate::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stderr]    --> src/inmemory/store.rs:479:9
[INFO] [stderr]     |
[INFO] [stderr] 479 |         tokio::join!(join_handle_1, join_handle_2);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `$crate::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `eventually-util` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/eventually_util-7525815f354247c2)
[INFO] [stdout] test inmemory::store::tests::append_with_any_versions_works ... ok
[INFO] [stdout] test inmemory::store::tests::remove ... ok
[INFO] [stdout] test inmemory::store::tests::stream_all ... ok
[INFO] [stderr]    Doc-tests eventually-util
[INFO] [stdout] test inmemory::store::tests::append_with_expected_versions_works ... ok
[INFO] [stdout] test inmemory::store::tests::append_with_wrong_expected_versions_fails ... ok
[INFO] [stdout] test inmemory::store::tests::subscribe_returns_all_the_latest_events ... ok
[INFO] [stdout] test inmemory::store::tests::stream ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[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" "e5069dae8bdcdaa7fa230b56cf5a74a3dc39aaedc8d16702732917c65a72ca8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5069dae8bdcdaa7fa230b56cf5a74a3dc39aaedc8d16702732917c65a72ca8b", kill_on_drop: false }`
[INFO] [stdout] e5069dae8bdcdaa7fa230b56cf5a74a3dc39aaedc8d16702732917c65a72ca8b