[INFO] fetching crate voluntary-servitude 4.0.8...
[INFO] testing voluntary-servitude-4.0.8 against 1.60.0 for beta-1.61-1
[INFO] extracting crate voluntary-servitude 4.0.8 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate voluntary-servitude 4.0.8 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate voluntary-servitude 4.0.8
[INFO] finished tweaking crates.io crate voluntary-servitude 4.0.8
[INFO] tweaked toml for crates.io crate voluntary-servitude 4.0.8 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded criterion v0.2.11
[INFO] [stderr]   Downloaded criterion-plot v0.3.1
[INFO] [stderr]   Downloaded rand_xoshiro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e509807a6cd1e209365b3e4ee45b562a4d1c7f1fc4377a37fa36ab23c9b2363
[INFO] running `Command { std: "docker" "start" "-a" "4e509807a6cd1e209365b3e4ee45b562a4d1c7f1fc4377a37fa36ab23c9b2363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e509807a6cd1e209365b3e4ee45b562a4d1c7f1fc4377a37fa36ab23c9b2363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e509807a6cd1e209365b3e4ee45b562a4d1c7f1fc4377a37fa36ab23c9b2363", kill_on_drop: false }`
[INFO] [stdout] 4e509807a6cd1e209365b3e4ee45b562a4d1c7f1fc4377a37fa36ab23c9b2363
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f573c4205cbec9cf005761a9b6bb8bba3f55a807e43d79733d7d970b5d6c2b3c
[INFO] running `Command { std: "docker" "start" "-a" "f573c4205cbec9cf005761a9b6bb8bba3f55a807e43d79733d7d970b5d6c2b3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling voluntary-servitude v4.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]   --> src/lib.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     legacy_directory_ownership,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/atomics/atomic_option.rs:76:39
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let old = NonNull::new(self.0.compare_and_swap(null_mut(), ptr, order));
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.67s
[INFO] running `Command { std: "docker" "inspect" "f573c4205cbec9cf005761a9b6bb8bba3f55a807e43d79733d7d970b5d6c2b3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f573c4205cbec9cf005761a9b6bb8bba3f55a807e43d79733d7d970b5d6c2b3c", kill_on_drop: false }`
[INFO] [stdout] f573c4205cbec9cf005761a9b6bb8bba3f55a807e43d79733d7d970b5d6c2b3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bea5593bc37ba7446ba952a430f6d9bbe45c8904de7fb4dc21b21ffe82f66f97
[INFO] running `Command { std: "docker" "start" "-a" "bea5593bc37ba7446ba952a430f6d9bbe45c8904de7fb4dc21b21ffe82f66f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]   --> src/lib.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     legacy_directory_ownership,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/atomics/atomic_option.rs:76:39
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let old = NonNull::new(self.0.compare_and_swap(null_mut(), ptr, order));
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling voluntary-servitude v4.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]   --> src/lib.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     legacy_directory_ownership,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/atomics/atomic_option.rs:76:39
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let old = NonNull::new(self.0.compare_and_swap(null_mut(), ptr, order));
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.35s
[INFO] running `Command { std: "docker" "inspect" "bea5593bc37ba7446ba952a430f6d9bbe45c8904de7fb4dc21b21ffe82f66f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bea5593bc37ba7446ba952a430f6d9bbe45c8904de7fb4dc21b21ffe82f66f97", kill_on_drop: false }`
[INFO] [stdout] bea5593bc37ba7446ba952a430f6d9bbe45c8904de7fb4dc21b21ffe82f66f97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8dce96d4af23cf1a7bc50be4ac8aa543f7dc9b56d00b43d0d11e628863c0aea6
[INFO] running `Command { std: "docker" "start" "-a" "8dce96d4af23cf1a7bc50be4ac8aa543f7dc9b56d00b43d0d11e628863c0aea6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout] running 23 tests
[INFO] [stderr]   --> src/lib.rs:87:5
[INFO] [stdout] test atomics::atomic::tests::test_sync ... ok
[INFO] [stderr]    |
[INFO] [stdout] test atomics::fill_once_atomic_arc::tests::test_send ... ok
[INFO] [stderr] 87 |     legacy_directory_ownership,
[INFO] [stdout] test atomics::fill_once_atomic_arc::tests::test_sync ... ok
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test atomics::atomic_option::tests::test_send ... ok
[INFO] [stderr]    |
[INFO] [stdout] test atomics::atomic_option::tests::test_sync ... ok
[INFO] [stderr]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] test atomics::atomic::tests::test_send ... ok
[INFO] [stderr] 
[INFO] [stdout] test atomics::fill_once_atomic_option::tests::fill_once_ref ... ok
[INFO] [stderr] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout] test atomics::fill_once_atomic_option::tests::test_send ... ok
[INFO] [stderr]   --> src/lib.rs:93:5
[INFO] [stdout] test atomics::fill_once_atomic_option::tests::test_sync ... ok
[INFO] [stderr]    |
[INFO] [stdout] test iterator::tests::iter_after_use ... ok
[INFO] [stderr] 93 |     plugin_as_library,
[INFO] [stdout] test iterator::tests::iter_all ... ok
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] test iterator::tests::iter_doesnt_clear ... ok
[INFO] [stderr] 
[INFO] [stdout] test iterator::tests::iter_drop ... ok
[INFO] [stderr] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout] test iterator::tests::iter_drop_many ... ok
[INFO] [stderr]   --> src/lib.rs:95:5
[INFO] [stdout] test iterator::tests::iter_grows ... ok
[INFO] [stderr]    |
[INFO] [stdout] test iterator::tests::iter_isnt_growable_when_consumed ... ok
[INFO] [stderr] 95 |     safe_extern_statics,
[INFO] [stdout] test iterator::tests::iter_many ... ok
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test voluntary_servitude::tests::extend_partial_eq ... ok
[INFO] [stderr] 
[INFO] [stdout] test voluntary_servitude::tests::iter_outlives ... ok
[INFO] [stderr] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout] test voluntary_servitude::tests::test_send ... ok
[INFO] [stderr]   --> src/lib.rs:97:5
[INFO] [stdout] test voluntary_servitude::tests::test_sync ... ok
[INFO] [stderr]    |
[INFO] [stdout] test voluntary_servitude::tests::swap_empty ... ok
[INFO] [stderr] 97 |     unions_with_drop_fields,
[INFO] [stdout] test voluntary_servitude::tests::voluntary_servitude_len_append_clear ... ok
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]   --> src/atomics/atomic_option.rs:76:39
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let old = NonNull::new(self.0.compare_and_swap(null_mut(), ptr, order));
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `voluntary-servitude` (lib) generated 5 warnings
[INFO] [stderr] warning: `voluntary-servitude` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/voluntary_servitude-1813d79f1e9e5ba1)
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-2ac636c6d796ffe2)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test elements_1b ... ignored
[INFO] [stdout] test elements_1m ... ignored
[INFO] [stdout] test elements_500m ... ignored
[INFO] [stdout] test elements_50m ... ignored
[INFO] [stdout] test clear ... ok
[INFO] [stdout] test single_thread ... ok
[INFO] [stdout] test single_producer_single_consumer ... ok
[INFO] [stdout] test single_producer_multi_consumer ... ok
[INFO] [stdout] test elements_100k ... ok
[INFO] [stdout] test multi_producer_single_consumer ... ok
[INFO] [stdout] test multi_producer_multi_consumer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 4 ignored; 0 measured; 0 filtered out; finished in 2.63s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests voluntary_servitude
[INFO] [stderr] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     legacy_directory_ownership,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     plugin_as_library,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     safe_extern_statics,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     unions_with_drop_fields,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test src/iterator.rs - iterator::Iter<T>::len (line 109) ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name voluntary_servitude --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-acb600de97666f0c.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-eea3495b20df05a1.rlib --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-ed6643cbb0cc48d0.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-3470883e27ae10a4.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-ad67c4f1270cdf22.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-00ba47f61690855c.rlib --extern voluntary_servitude=/opt/rustwide/target/debug/deps/libvoluntary_servitude-cbd54421e0567209.rlib -C embed-bitcode=no --cfg 'feature="default"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "8dce96d4af23cf1a7bc50be4ac8aa543f7dc9b56d00b43d0d11e628863c0aea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dce96d4af23cf1a7bc50be4ac8aa543f7dc9b56d00b43d0d11e628863c0aea6", kill_on_drop: false }`
[INFO] [stdout] 8dce96d4af23cf1a7bc50be4ac8aa543f7dc9b56d00b43d0d11e628863c0aea6