[INFO] fetching crate run-down 0.1.1...
[INFO] testing run-down-0.1.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate run-down 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate run-down 0.1.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate run-down 0.1.1
[INFO] finished tweaking crates.io crate run-down 0.1.1
[INFO] tweaked toml for crates.io crate run-down 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsevents v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 394f033329f11d4c441e985c968d04d4f6ad748381be8d38f6ae486d7c8ec9e4
[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" "394f033329f11d4c441e985c968d04d4f6ad748381be8d38f6ae486d7c8ec9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394f033329f11d4c441e985c968d04d4f6ad748381be8d38f6ae486d7c8ec9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394f033329f11d4c441e985c968d04d4f6ad748381be8d38f6ae486d7c8ec9e4", kill_on_drop: false }`
[INFO] [stdout] 394f033329f11d4c441e985c968d04d4f6ad748381be8d38f6ae486d7c8ec9e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01fb06ce8a93f1dc9b0aed93422c7a000adb4133f926fb362aff0f79bc4897ea
[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" "01fb06ce8a93f1dc9b0aed93422c7a000adb4133f926fb362aff0f79bc4897ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy-init v0.3.0
[INFO] [stderr]    Compiling rsevents v0.2.1
[INFO] [stderr]    Compiling run-down v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "01fb06ce8a93f1dc9b0aed93422c7a000adb4133f926fb362aff0f79bc4897ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fb06ce8a93f1dc9b0aed93422c7a000adb4133f926fb362aff0f79bc4897ea", kill_on_drop: false }`
[INFO] [stdout] 01fb06ce8a93f1dc9b0aed93422c7a000adb4133f926fb362aff0f79bc4897ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] b3a5f63f138fd618ee03842f4713af1055baded7ed7793c3379689e2e033d6c3
[INFO] running `Command { std: "docker" "start" "-a" "b3a5f63f138fd618ee03842f4713af1055baded7ed7793c3379689e2e033d6c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling run-down v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: bounds on `T: Drop` are useless, consider instead using `std::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout]   --> tests/unit-tests.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn is_droppable<T: Drop>() {}
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(drop_bounds)]` 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 1.81s
[INFO] running `Command { std: "docker" "inspect" "b3a5f63f138fd618ee03842f4713af1055baded7ed7793c3379689e2e033d6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a5f63f138fd618ee03842f4713af1055baded7ed7793c3379689e2e033d6c3", kill_on_drop: false }`
[INFO] [stdout] b3a5f63f138fd618ee03842f4713af1055baded7ed7793c3379689e2e033d6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f44a2dcdcf7e5c7ea78cc8c87a259de25d8c7d62f8aac970e8761e38c0d174e
[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" "2f44a2dcdcf7e5c7ea78cc8c87a259de25d8c7d62f8aac970e8761e38c0d174e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: bounds on `T: Drop` are useless, consider instead using `std::mem::needs_drop` to detect if a type has a destructor
[INFO] [stdout] running 6 tests
[INFO] [stderr]   --> tests/unit-tests.rs:19:24
[INFO] [stdout] test flags::test_rundown_flags_refcount ... ok
[INFO] [stderr]    |
[INFO] [stdout] test flags::test_to_flags ... ok
[INFO] [stderr] 19 |     fn is_droppable<T: Drop>() {}
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(drop_bounds)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/run_down-e5920a1786147bf2
[INFO] [stdout] test flags::test_rundown_flags_set_in_progress ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unit_tests-4ee4e709bc785a7e
[INFO] [stdout] test rundown_ref::test_wait_when_protected ... ok
[INFO] [stdout] test flags::test_rundown_flags_underflow_panic ... ok
[INFO] [stdout] test flags::test_rundown_flags_overflow_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_acquisition_when_rundown ... ok
[INFO] [stdout] test test_multiple_successive_waits ... ok
[INFO] [stdout] test test_re_init ... ok
[INFO] [stdout] test test_rundown_guard_implements_drop ... ok
[INFO] [stdout] test test_usage_with_concurrency ... ok
[INFO] [stdout] test test_acquisition_when_not_rundown ... ok
[INFO] [stdout] test test_re_init_panic_on_ref ... ok
[INFO] [stdout] test test_re_init_panic_without_rundown ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests run-down
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] test src/lib.rs - readme_examples (line 116) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.86s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2f44a2dcdcf7e5c7ea78cc8c87a259de25d8c7d62f8aac970e8761e38c0d174e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f44a2dcdcf7e5c7ea78cc8c87a259de25d8c7d62f8aac970e8761e38c0d174e", kill_on_drop: false }`
[INFO] [stdout] 2f44a2dcdcf7e5c7ea78cc8c87a259de25d8c7d62f8aac970e8761e38c0d174e