[INFO] fetching crate core_extensions 1.4.2...
[INFO] testing core_extensions-1.4.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate core_extensions 1.4.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate core_extensions 1.4.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core_extensions 1.4.2
[INFO] finished tweaking crates.io crate core_extensions 1.4.2
[INFO] tweaked toml for crates.io crate core_extensions 1.4.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b1f2681848bb0d8bd65adcc9f7ebe81249b81a6de14ace714fa6d43d153d590
[INFO] running `Command { std: "docker" "start" "-a" "5b1f2681848bb0d8bd65adcc9f7ebe81249b81a6de14ace714fa6d43d153d590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b1f2681848bb0d8bd65adcc9f7ebe81249b81a6de14ace714fa6d43d153d590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1f2681848bb0d8bd65adcc9f7ebe81249b81a6de14ace714fa6d43d153d590", kill_on_drop: false }`
[INFO] [stdout] 5b1f2681848bb0d8bd65adcc9f7ebe81249b81a6de14ace714fa6d43d153d590
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e11890a0a043641f8256d1ec1a62b03ccce6506934840f1ed4902593f0301c9
[INFO] running `Command { std: "docker" "start" "-a" "9e11890a0a043641f8256d1ec1a62b03ccce6506934840f1ed4902593f0301c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling core_extensions v1.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "9e11890a0a043641f8256d1ec1a62b03ccce6506934840f1ed4902593f0301c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e11890a0a043641f8256d1ec1a62b03ccce6506934840f1ed4902593f0301c9", kill_on_drop: false }`
[INFO] [stdout] 9e11890a0a043641f8256d1ec1a62b03ccce6506934840f1ed4902593f0301c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47bd645772a5c7cb192931ba53ca928c8b351763b3bb94cbebf187fd1915f614
[INFO] running `Command { std: "docker" "start" "-a" "47bd645772a5c7cb192931ba53ca928c8b351763b3bb94cbebf187fd1915f614", kill_on_drop: false }`
[INFO] [stderr]    Compiling core_extensions v1.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src_core_extensions/test_utils.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn new(max: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clone_count`
[INFO] [stdout]   --> src_core_extensions/test_utils.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn clone_count(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `drop_count`
[INFO] [stdout]   --> src_core_extensions/test_utils.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn drop_count(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "47bd645772a5c7cb192931ba53ca928c8b351763b3bb94cbebf187fd1915f614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47bd645772a5c7cb192931ba53ca928c8b351763b3bb94cbebf187fd1915f614", kill_on_drop: false }`
[INFO] [stdout] 47bd645772a5c7cb192931ba53ca928c8b351763b3bb94cbebf187fd1915f614
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f0481bb7a424306d20268a18bf87dae566c7cba78405829f81d521cae2edeb9d
[INFO] running `Command { std: "docker" "start" "-a" "f0481bb7a424306d20268a18bf87dae566c7cba78405829f81d521cae2edeb9d", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src_core_extensions/test_utils.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn new(max: usize) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `clone_count`
[INFO] [stderr]   --> src_core_extensions/test_utils.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn clone_count(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `drop_count`
[INFO] [stderr]   --> src_core_extensions/test_utils.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn drop_count(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `core_extensions` (lib test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/core_extensions-1b4d1f2a04d07aab)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test utils::tests::take_manuallydrop_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests core_extensions
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src_core_extensions/lib.rs - (line 34) ... ignored
[INFO] [stdout] test src_core_extensions/utils.rs - utils::impossible (line 116) ... ignored
[INFO] [stdout] test src_core_extensions/macros/matches_macro.rs - macros::matches_macro::matches (line 9) ... ok
[INFO] [stdout] test src_core_extensions/utils.rs - utils::transmute_ignore_size (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f0481bb7a424306d20268a18bf87dae566c7cba78405829f81d521cae2edeb9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0481bb7a424306d20268a18bf87dae566c7cba78405829f81d521cae2edeb9d", kill_on_drop: false }`
[INFO] [stdout] f0481bb7a424306d20268a18bf87dae566c7cba78405829f81d521cae2edeb9d