[INFO] fetching crate singleton 0.2.2...
[INFO] linting singleton-0.2.2 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate singleton 0.2.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate singleton 0.2.2
[INFO] finished tweaking crates.io crate singleton 0.2.2
[INFO] tweaked toml for crates.io crate singleton 0.2.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate singleton 0.2.2 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a28aca3ff6d22acc1c21186225e2dbc985ad72015774ac2b1b98d4ef49bc22ff
[INFO] running `Command { std: "docker" "start" "-a" "a28aca3ff6d22acc1c21186225e2dbc985ad72015774ac2b1b98d4ef49bc22ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a28aca3ff6d22acc1c21186225e2dbc985ad72015774ac2b1b98d4ef49bc22ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28aca3ff6d22acc1c21186225e2dbc985ad72015774ac2b1b98d4ef49bc22ff", kill_on_drop: false }`
[INFO] [stdout] a28aca3ff6d22acc1c21186225e2dbc985ad72015774ac2b1b98d4ef49bc22ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ffb5a03923d2804ec426576b6b09c05823518129b6284012dd6b2454dc1217a
[INFO] running `Command { std: "docker" "start" "-a" "6ffb5a03923d2804ec426576b6b09c05823518129b6284012dd6b2454dc1217a", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking singleton v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/singleton.rs:87:40
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let mut cur_state = self.state.compare_and_swap(
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/singleton.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     cur_state = self.state.compare_and_swap(
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unsafe function's docs are missing a `# Safety` section
[INFO] [stdout]    --> src/singleton.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub unsafe fn finalize(&self) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc
[INFO] [stdout]     = note: `#[warn(clippy::missing_safety_doc)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `PreemptiveSingleton<T>`
[INFO] [stdout]   --> src/preemptive.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pub fn new() -> Self {
[INFO] [stdout] 42 | |         make_preemptive_singleton!()
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 32 + #[cfg(not(feature = "const_fn"))]
[INFO] [stdout] 33 + impl<T: Send> Default for PreemptiveSingleton<T> {
[INFO] [stdout] 34 +     fn default() -> Self {
[INFO] [stdout] 35 +         Self::new()
[INFO] [stdout] 36 +     }
[INFO] [stdout] 37 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/preemptive.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         return None;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -         return None;
[INFO] [stdout] 63 +         None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unsafe function's docs are missing a `# Safety` section
[INFO] [stdout]   --> src/preemptive.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub unsafe fn finalize(&self) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/preemptive.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             return self.singleton.finalize();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 93 -             return self.singleton.finalize();
[INFO] [stdout] 93 +             self.singleton.finalize()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/singleton.rs:87:40
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let mut cur_state = self.state.compare_and_swap(
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/singleton.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     cur_state = self.state.compare_and_swap(
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/singleton.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 |     struct A(usize);
[INFO] [stdout]     |            - ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/singleton.rs:163:14
[INFO] [stdout]     |
[INFO] [stdout] 163 |     struct B(usize);
[INFO] [stdout]     |            - ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unsafe function's docs are missing a `# Safety` section
[INFO] [stdout]    --> src/singleton.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub unsafe fn finalize(&self) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc
[INFO] [stdout]     = note: `#[warn(clippy::missing_safety_doc)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/singleton.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |         assert!(!SINGLETON_A.get_opt().is_none());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_A.get_opt().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/singleton.rs:182:17
[INFO] [stdout]     |
[INFO] [stdout] 182 |         assert!(!SINGLETON_B.get_opt().is_none());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_B.get_opt().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `PreemptiveSingleton<T>`
[INFO] [stdout]   --> src/preemptive.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pub fn new() -> Self {
[INFO] [stdout] 42 | |         make_preemptive_singleton!()
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]    = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]    |
[INFO] [stdout] 32 + #[cfg(not(feature = "const_fn"))]
[INFO] [stdout] 33 + impl<T: Send> Default for PreemptiveSingleton<T> {
[INFO] [stdout] 34 +     fn default() -> Self {
[INFO] [stdout] 35 +         Self::new()
[INFO] [stdout] 36 +     }
[INFO] [stdout] 37 + }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/preemptive.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         return None;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -         return None;
[INFO] [stdout] 63 +         None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unsafe function's docs are missing a `# Safety` section
[INFO] [stdout]   --> src/preemptive.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub unsafe fn finalize(&self) {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/preemptive.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             return self.singleton.finalize();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 93 -             return self.singleton.finalize();
[INFO] [stdout] 93 +             self.singleton.finalize()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/trial.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct A(usize);
[INFO] [stdout]   |        - ^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bin/trial.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct B(RefCell<usize>);
[INFO] [stdout]    |        - ^^^^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/trial.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     assert!(!SINGLETON_A.get_opt().is_none());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_A.get_opt().is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/trial.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     assert!(!SINGLETON_B.get_opt().is_none());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_B.get_opt().is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/trial.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct A(usize);
[INFO] [stdout]   |        - ^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bin/trial.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct B(RefCell<usize>);
[INFO] [stdout]    |        - ^^^^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/trial.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |     assert!(!SINGLETON_A.get_opt().is_none());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_A.get_opt().is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/trial.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     assert!(!SINGLETON_B.get_opt().is_none());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `SINGLETON_B.get_opt().is_some()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "6ffb5a03923d2804ec426576b6b09c05823518129b6284012dd6b2454dc1217a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ffb5a03923d2804ec426576b6b09c05823518129b6284012dd6b2454dc1217a", kill_on_drop: false }`
[INFO] [stdout] 6ffb5a03923d2804ec426576b6b09c05823518129b6284012dd6b2454dc1217a