[INFO] fetching crate genref 0.8.0...
[INFO] checking genref-0.8.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate genref 0.8.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate genref 0.8.0
[INFO] finished tweaking crates.io crate genref 0.8.0
[INFO] tweaked toml for crates.io crate genref 0.8.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate genref 0.8.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 141c98182398567868f4b85698f6f5f54c2bfbe0bf2767691a5bdb0f1b45da3e
[INFO] running `Command { std: "docker" "start" "-a" "141c98182398567868f4b85698f6f5f54c2bfbe0bf2767691a5bdb0f1b45da3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141c98182398567868f4b85698f6f5f54c2bfbe0bf2767691a5bdb0f1b45da3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141c98182398567868f4b85698f6f5f54c2bfbe0bf2767691a5bdb0f1b45da3e", kill_on_drop: false }`
[INFO] [stdout] 141c98182398567868f4b85698f6f5f54c2bfbe0bf2767691a5bdb0f1b45da3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42f5d97ddb93d7a1a6efb17a3d11e225d5cf31fd871a8823d8ee997cf223630f
[INFO] running `Command { std: "docker" "start" "-a" "42f5d97ddb93d7a1a6efb17a3d11e225d5cf31fd871a8823d8ee997cf223630f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking genref v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `dq` is assigned to, but never used
[INFO] [stdout]    --> src/global.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let dq;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_dq` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dq` is never read
[INFO] [stdout]    --> src/global.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |             Ok(mut wl) => dq = DropQueue::clear(&mut wl),
[INFO] [stdout]     |                           ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Generation` is never constructed
[INFO] [stdout]   --> src/global.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Generation(&'static AtomicU32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `free` are never used
[INFO] [stdout]   --> src/global.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Generation
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 22 | {
[INFO] [stdout] 23 |     fn new() -> Self { FreeList::unfree().unwrap_or_else(FreshList::fresh) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 24 |     fn get(&self) -> u32 { self.0.load(Ordering::Relaxed) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 25 |
[INFO] [stdout] 26 |     fn free(this: Self)
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lock` is never constructed
[INFO] [stdout]   --> src/global.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Lock(parking_lot::RawRwLock);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Reading` is never constructed
[INFO] [stdout]   --> src/global.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Reading(());
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reading` is never used
[INFO] [stdout]   --> src/global.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn reading() -> Reading { Lock::reading() }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_reading` is never used
[INFO] [stdout]   --> src/global.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn try_reading() -> Option<Reading> { Lock::try_reading() }
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Writing` is never constructed
[INFO] [stdout]   --> src/global.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct Writing(());
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writing` is never used
[INFO] [stdout]   --> src/global.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn writing() -> Writing { Lock::writing() }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_writing` is never used
[INFO] [stdout]   --> src/global.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn try_writing() -> Option<Writing> { Lock::try_writing() }
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new`, `reading`, `writing`, `try_reading`, and `try_writing` are never used
[INFO] [stdout]   --> src/global.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Lock
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 66 | {
[INFO] [stdout] 67 |     fn new() -> Self { Self(lock_api::RawRwLock::INIT) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 68 |
[INFO] [stdout] 69 |     fn reading() -> Reading
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn writing() -> Writing
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn try_reading() -> Option<Reading>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn try_writing() -> Option<Writing>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_upgrade` is never used
[INFO] [stdout]    --> src/global.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl Reading
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 101 | {
[INFO] [stdout] 102 |     fn try_upgrade(self) -> Result<Writing, Self>
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreeList` is never constructed
[INFO] [stdout]    --> src/global.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct FreeList(Vec<Generation>);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreshList` is never constructed
[INFO] [stdout]    --> src/global.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | struct FreshList(usize, &'static [AtomicU32]);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `free_`, `free`, `unfree_`, and `unfree` are never used
[INFO] [stdout]    --> src/global.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl FreeList
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 152 | {
[INFO] [stdout] 153 |     fn new() -> Self { Self(Vec::with_capacity(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 154 |
[INFO] [stdout] 155 |     fn free_(&mut self, gen: Generation) { self.0.push(gen) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 156 |     fn free(gen: Generation) { FREELIST.lock().free_(gen) }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 157 |
[INFO] [stdout] 158 |     fn unfree_(&mut self) -> Option<Generation> { self.0.pop() }
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 159 |     fn unfree() -> Option<Generation> { FREELIST.lock().unfree_() }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `INIT`, `new`, `fresh_`, `fresh`, `refresh`, and `more` are never used
[INFO] [stdout]    --> src/global.rs:164:11
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl FreshList
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 163 | {
[INFO] [stdout] 164 |     const INIT: u32 = 1;
[INFO] [stdout]     |           ^^^^
[INFO] [stdout] 165 |     fn new() -> Self { Self(0, Self::more(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 166 |
[INFO] [stdout] 167 |     fn fresh_(&mut self) -> Generation
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn fresh() -> Generation { FRESHLIST.lock().fresh_() }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 177 |
[INFO] [stdout] 178 |     fn refresh(&mut self)
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 184 |     fn more(n: usize) -> &'static [AtomicU32]
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DropLater` is never used
[INFO] [stdout]    --> src/global.rs:193:7
[INFO] [stdout]     |
[INFO] [stdout] 193 | trait DropLater: Send + Sync {}
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DropQueue` is never constructed
[INFO] [stdout]    --> src/global.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | struct DropQueue(Vec<Box<dyn DropLater>>);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `clear_`, `clear`, `defer_`, and `defer` are never used
[INFO] [stdout]    --> src/global.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl DropQueue
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 198 | {
[INFO] [stdout] 199 |     fn new() -> Self { Self(Vec::with_capacity(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 200 |
[INFO] [stdout] 201 |     fn clear_(&mut self, _wl: &mut Writing) -> impl Drop
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.lock().clear_(wl) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 208 |
[INFO] [stdout] 209 |     fn defer_(&mut self, val: Box<dyn DropLater>) { self.0.push(val) }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 210 |     fn defer(val: Box<dyn DropLater>) { DROPQUEUE.lock().defer_(val) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Strong` is never constructed
[INFO] [stdout]    --> src/global.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub struct Strong<T: Sync + Send + 'static>
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Weak` is never constructed
[INFO] [stdout]    --> src/global.rs:231:12
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct Weak<T: Sync + Send + 'static>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `alias`, `take`, `as_ref`, `as_mut`, and `map` are never used
[INFO] [stdout]    --> src/global.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout] 253 | impl<T: Sync + Send + 'static> Strong<T>
[INFO] [stdout]     | ---------------------------------------- associated items in this implementation
[INFO] [stdout] 254 | {
[INFO] [stdout] 255 |     pub fn new(t: T) -> Self { Self::from(Box::new(t)) }
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 256 |
[INFO] [stdout] 257 |     pub fn alias(&self) -> Weak<T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 266 |     pub fn take(mut self, _wl: &mut Writing) -> Box<T>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 274 |     pub fn as_ref(&self, _rl: &Reading) -> &T { &self.ptr }
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 275 |     pub fn as_mut(&mut self, _wl: &mut Writing) -> &mut T { &mut self.ptr }
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 276 |
[INFO] [stdout] 277 |     pub fn map<F, U>(&self, rl: &Reading, f: F) -> Weak<U>
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `dangling`, `is_valid`, `try_ref`, `try_mut`, and `try_map` are never used
[INFO] [stdout]    --> src/global.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 301 | impl<T: Sync + Send + 'static> Weak<T>
[INFO] [stdout]     | -------------------------------------- associated items in this implementation
[INFO] [stdout] 302 | {
[INFO] [stdout] 303 |     pub fn dangling() -> Self
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 313 |     pub fn is_valid(&self) -> bool { self.genref == self.gen.get() }
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 314 |
[INFO] [stdout] 315 |     pub fn try_ref(&self, _rl: &Reading) -> Option<&T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 324 |     pub fn try_mut(&mut self, _wl: &mut Writing) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 333 |     pub fn try_map<F, U>(&self, rl: &Reading, f: F) -> Option<Weak<U>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Ref` is never used
[INFO] [stdout]    --> src/global.rs:357:10
[INFO] [stdout]     |
[INFO] [stdout] 357 | pub enum Ref<T: Sync + Send + 'static>
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/global.rs:366:12
[INFO] [stdout]     |
[INFO] [stdout] 363 | impl<T: Sync + Send + 'static> Ref<T>
[INFO] [stdout]     | ------------------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 366 |     pub fn new(t: T) -> Self { Self::Strong(Strong::new(t)) }
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 367 |
[INFO] [stdout] 368 |     pub fn try_as_ref(&self, rl: &Reading) -> Option<&T>
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 376 |     pub fn try_mut(&mut self, wl: &mut Writing) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 384 |     pub fn try_map<F, U>(&self, rl: &Reading, f: F) -> Option<Ref<U>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     pub fn is_weak(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pub fn is_strong(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 411 |     pub fn is_valid(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]    --> src/lib.rs:298:52
[INFO] [stdout]     |
[INFO] [stdout] 298 |             gen: Generation(NonNull::from(unsafe { &mut ZERO })),
[INFO] [stdout]     |                                                    ^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` on by default
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 298 |             gen: Generation(NonNull::from(unsafe { &raw mut ZERO })),
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dq` is assigned to, but never used
[INFO] [stdout]    --> src/global.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let dq;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_dq` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dq` is never read
[INFO] [stdout]    --> src/global.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |             Ok(mut wl) => dq = DropQueue::clear(&mut wl),
[INFO] [stdout]     |                           ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Generation` is never constructed
[INFO] [stdout]   --> src/global.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Generation(&'static AtomicU32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `free` are never used
[INFO] [stdout]   --> src/global.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Generation
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 22 | {
[INFO] [stdout] 23 |     fn new() -> Self { FreeList::unfree().unwrap_or_else(FreshList::fresh) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 24 |     fn get(&self) -> u32 { self.0.load(Ordering::Relaxed) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 25 |
[INFO] [stdout] 26 |     fn free(this: Self)
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lock` is never constructed
[INFO] [stdout]   --> src/global.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Lock(parking_lot::RawRwLock);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Reading` is never constructed
[INFO] [stdout]   --> src/global.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Reading(());
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reading` is never used
[INFO] [stdout]   --> src/global.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn reading() -> Reading { Lock::reading() }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_reading` is never used
[INFO] [stdout]   --> src/global.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn try_reading() -> Option<Reading> { Lock::try_reading() }
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Writing` is never constructed
[INFO] [stdout]   --> src/global.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct Writing(());
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `writing` is never used
[INFO] [stdout]   --> src/global.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn writing() -> Writing { Lock::writing() }
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_writing` is never used
[INFO] [stdout]   --> src/global.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn try_writing() -> Option<Writing> { Lock::try_writing() }
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new`, `reading`, `writing`, `try_reading`, and `try_writing` are never used
[INFO] [stdout]   --> src/global.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Lock
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 66 | {
[INFO] [stdout] 67 |     fn new() -> Self { Self(lock_api::RawRwLock::INIT) }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 68 |
[INFO] [stdout] 69 |     fn reading() -> Reading
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn writing() -> Writing
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn try_reading() -> Option<Reading>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn try_writing() -> Option<Writing>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_upgrade` is never used
[INFO] [stdout]    --> src/global.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl Reading
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 101 | {
[INFO] [stdout] 102 |     fn try_upgrade(self) -> Result<Writing, Self>
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreeList` is never constructed
[INFO] [stdout]    --> src/global.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | struct FreeList(Vec<Generation>);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FreshList` is never constructed
[INFO] [stdout]    --> src/global.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | struct FreshList(usize, &'static [AtomicU32]);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `free_`, `free`, `unfree_`, and `unfree` are never used
[INFO] [stdout]    --> src/global.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl FreeList
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 152 | {
[INFO] [stdout] 153 |     fn new() -> Self { Self(Vec::with_capacity(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 154 |
[INFO] [stdout] 155 |     fn free_(&mut self, gen: Generation) { self.0.push(gen) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 156 |     fn free(gen: Generation) { FREELIST.lock().free_(gen) }
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 157 |
[INFO] [stdout] 158 |     fn unfree_(&mut self) -> Option<Generation> { self.0.pop() }
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 159 |     fn unfree() -> Option<Generation> { FREELIST.lock().unfree_() }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `INIT`, `new`, `fresh_`, `fresh`, `refresh`, and `more` are never used
[INFO] [stdout]    --> src/global.rs:164:11
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl FreshList
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 163 | {
[INFO] [stdout] 164 |     const INIT: u32 = 1;
[INFO] [stdout]     |           ^^^^
[INFO] [stdout] 165 |     fn new() -> Self { Self(0, Self::more(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 166 |
[INFO] [stdout] 167 |     fn fresh_(&mut self) -> Generation
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn fresh() -> Generation { FRESHLIST.lock().fresh_() }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 177 |
[INFO] [stdout] 178 |     fn refresh(&mut self)
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 184 |     fn more(n: usize) -> &'static [AtomicU32]
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `DropLater` is never used
[INFO] [stdout]    --> src/global.rs:193:7
[INFO] [stdout]     |
[INFO] [stdout] 193 | trait DropLater: Send + Sync {}
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DropQueue` is never constructed
[INFO] [stdout]    --> src/global.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | struct DropQueue(Vec<Box<dyn DropLater>>);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `clear_`, `clear`, `defer_`, and `defer` are never used
[INFO] [stdout]    --> src/global.rs:199:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl DropQueue
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 198 | {
[INFO] [stdout] 199 |     fn new() -> Self { Self(Vec::with_capacity(32)) }
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 200 |
[INFO] [stdout] 201 |     fn clear_(&mut self, _wl: &mut Writing) -> impl Drop
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn clear(wl: &mut Writing) -> impl Drop { DROPQUEUE.lock().clear_(wl) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 208 |
[INFO] [stdout] 209 |     fn defer_(&mut self, val: Box<dyn DropLater>) { self.0.push(val) }
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 210 |     fn defer(val: Box<dyn DropLater>) { DROPQUEUE.lock().defer_(val) }
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Strong` is never constructed
[INFO] [stdout]    --> src/global.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub struct Strong<T: Sync + Send + 'static>
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Weak` is never constructed
[INFO] [stdout]    --> src/global.rs:231:12
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct Weak<T: Sync + Send + 'static>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `alias`, `take`, `as_ref`, `as_mut`, and `map` are never used
[INFO] [stdout]    --> src/global.rs:255:12
[INFO] [stdout]     |
[INFO] [stdout] 253 | impl<T: Sync + Send + 'static> Strong<T>
[INFO] [stdout]     | ---------------------------------------- associated items in this implementation
[INFO] [stdout] 254 | {
[INFO] [stdout] 255 |     pub fn new(t: T) -> Self { Self::from(Box::new(t)) }
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 256 |
[INFO] [stdout] 257 |     pub fn alias(&self) -> Weak<T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 266 |     pub fn take(mut self, _wl: &mut Writing) -> Box<T>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 274 |     pub fn as_ref(&self, _rl: &Reading) -> &T { &self.ptr }
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 275 |     pub fn as_mut(&mut self, _wl: &mut Writing) -> &mut T { &mut self.ptr }
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 276 |
[INFO] [stdout] 277 |     pub fn map<F, U>(&self, rl: &Reading, f: F) -> Weak<U>
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `dangling`, `is_valid`, `try_ref`, `try_mut`, and `try_map` are never used
[INFO] [stdout]    --> src/global.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 301 | impl<T: Sync + Send + 'static> Weak<T>
[INFO] [stdout]     | -------------------------------------- associated items in this implementation
[INFO] [stdout] 302 | {
[INFO] [stdout] 303 |     pub fn dangling() -> Self
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 313 |     pub fn is_valid(&self) -> bool { self.genref == self.gen.get() }
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 314 |
[INFO] [stdout] 315 |     pub fn try_ref(&self, _rl: &Reading) -> Option<&T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 324 |     pub fn try_mut(&mut self, _wl: &mut Writing) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 333 |     pub fn try_map<F, U>(&self, rl: &Reading, f: F) -> Option<Weak<U>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Ref` is never used
[INFO] [stdout]    --> src/global.rs:357:10
[INFO] [stdout]     |
[INFO] [stdout] 357 | pub enum Ref<T: Sync + Send + 'static>
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/global.rs:366:12
[INFO] [stdout]     |
[INFO] [stdout] 363 | impl<T: Sync + Send + 'static> Ref<T>
[INFO] [stdout]     | ------------------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 366 |     pub fn new(t: T) -> Self { Self::Strong(Strong::new(t)) }
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 367 |
[INFO] [stdout] 368 |     pub fn try_as_ref(&self, rl: &Reading) -> Option<&T>
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 376 |     pub fn try_mut(&mut self, wl: &mut Writing) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 384 |     pub fn try_map<F, U>(&self, rl: &Reading, f: F) -> Option<Ref<U>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     pub fn is_weak(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 403 |     pub fn is_strong(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 411 |     pub fn is_valid(&self) -> bool
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static
[INFO] [stdout]    --> src/lib.rs:298:52
[INFO] [stdout]     |
[INFO] [stdout] 298 |             gen: Generation(NonNull::from(unsafe { &mut ZERO })),
[INFO] [stdout]     |                                                    ^^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]     = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives
[INFO] [stdout]     = note: `#[warn(static_mut_refs)]` on by default
[INFO] [stdout] help: use `&raw mut` instead to create a raw pointer
[INFO] [stdout]     |
[INFO] [stdout] 298 |             gen: Generation(NonNull::from(unsafe { &raw mut ZERO })),
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "42f5d97ddb93d7a1a6efb17a3d11e225d5cf31fd871a8823d8ee997cf223630f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42f5d97ddb93d7a1a6efb17a3d11e225d5cf31fd871a8823d8ee997cf223630f", kill_on_drop: false }`
[INFO] [stdout] 42f5d97ddb93d7a1a6efb17a3d11e225d5cf31fd871a8823d8ee997cf223630f