[INFO] updating cached repository jarrett/rust-patterns
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jarrett/rust-patterns
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jarrett/rust-patterns" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jarrett/rust-patterns"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jarrett/rust-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jarrett/rust-patterns" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jarrett/rust-patterns"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jarrett/rust-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 123d17df7e51a0bce5d23fbc76c85e43cdae94bf
[INFO] sha for GitHub repo jarrett/rust-patterns: 123d17df7e51a0bce5d23fbc76c85e43cdae94bf
[INFO] validating manifest of jarrett/rust-patterns on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jarrett/rust-patterns on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jarrett/rust-patterns
[INFO] finished frobbing jarrett/rust-patterns
[INFO] frobbed toml for jarrett/rust-patterns written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jarrett/rust-patterns/Cargo.toml
[INFO] started frobbing jarrett/rust-patterns
[INFO] finished frobbing jarrett/rust-patterns
[INFO] frobbed toml for jarrett/rust-patterns written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/jarrett/rust-patterns/Cargo.toml
[INFO] crate jarrett/rust-patterns already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jarrett/rust-patterns against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/jarrett/rust-patterns:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0e015293b3a770bf51cbc58a137facf4a0dbd0ce0e335d1d56984f49723f5f77
[INFO] running `"docker" "start" "-a" "0e015293b3a770bf51cbc58a137facf4a0dbd0ce0e335d1d56984f49723f5f77"`
[INFO] [stderr]     Checking rust-patterns v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Bar`
[INFO] [stderr]   --> src/any.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Bar;
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `World`
[INFO] [stderr]  --> src/mutability.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct World {
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]   --> src/mutability.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | struct Person {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `attack`
[INFO] [stderr]   --> src/mutability.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn attack(&self, other: &mut Person) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `attack_sibling`
[INFO] [stderr]   --> src/mutability.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn attack_sibling(&self) -> Result<(), ()> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `health`
[INFO] [stderr]   --> src/mutability.rs:46:3
[INFO] [stderr]    |
[INFO] [stderr] 46 |   pub fn health(&self) -> u8 { self.health }
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/mutability.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn new(armor: u8, strength: u8) -> Person {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `receive_attack`
[INFO] [stderr]   --> src/mutability.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn receive_attack(&mut self, strength: u8) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_sibling`
[INFO] [stderr]   --> src/mutability.rs:56:3
[INFO] [stderr]    |
[INFO] [stderr] 56 |   pub fn set_sibling(&mut self, sibling: &Rc<RefCell<Person>>) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `EmitterRef`
[INFO] [stderr]  --> src/events/pointer.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type EmitterRef<T> = Rc<RefCell<T>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PackagedEvent`
[INFO] [stderr]   --> src/events/pointer.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct PackagedEvent<T: 'static> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Bar`
[INFO] [stderr]   --> src/events/pointer.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | struct Bar {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cast`
[INFO] [stderr]   --> src/events/pointer.rs:22:3
[INFO] [stderr]    |
[INFO] [stderr] 22 | /   fn cast<U, V, F>(&self, f: F) -> Option<V>
[INFO] [stderr] 23 | |     where U: 'static, F: FnOnce(&U) -> V
[INFO] [stderr] 24 | |   {
[INFO] [stderr] 25 | |     self.event.as_any().downcast_ref::<U>().map(f)
[INFO] [stderr] 26 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `package`
[INFO] [stderr]   --> src/events/pointer.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |   fn package(events: &mut Events, emitter: &EmitterRef<T>) -> Vec<PackagedEvent<T>> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `EntityRef`
[INFO] [stderr]   --> src/events/uuid.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct EntityRef<T: 'static> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PackagedEvent`
[INFO] [stderr]   --> src/events/uuid.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | struct PackagedEvent<T: 'static> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Bar`
[INFO] [stderr]   --> src/events/uuid.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct Bar {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clone`
[INFO] [stderr]   --> src/events/uuid.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 |   fn clone(&self) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/events/uuid.rs:45:3
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn new(uuid: Uuid) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve`
[INFO] [stderr]   --> src/events/uuid.rs:51:3
[INFO] [stderr]    |
[INFO] [stderr] 51 | /   fn resolve<'a>(
[INFO] [stderr] 52 | |     &self, registry: &'a HashMap<Uuid, Box<Any>>
[INFO] [stderr] 53 | |   ) -> &'a Rc<RefCell<T>> {
[INFO] [stderr] 54 | |     registry.get(&self.uuid).unwrap().downcast_ref::<Rc<RefCell<T>>>().unwrap()
[INFO] [stderr] 55 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cast`
[INFO] [stderr]   --> src/events/uuid.rs:59:3
[INFO] [stderr]    |
[INFO] [stderr] 59 | /   fn cast<U, V, F>(&self, f: F) -> Option<V>
[INFO] [stderr] 60 | |     where U: 'static, F: FnOnce(&U) -> V
[INFO] [stderr] 61 | |   {
[INFO] [stderr] 62 | |     self.event.as_any().downcast_ref::<U>().map(f)
[INFO] [stderr] 63 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `package`
[INFO] [stderr]   --> src/events/uuid.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |   fn package(events: &mut Events, emitter: &EntityRef<T>) -> Vec<PackagedEvent<T>> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/events/uuid.rs:74:3
[INFO] [stderr]    |
[INFO] [stderr] 74 |   fn new() -> Bar {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Events`
[INFO] [stderr]   --> src/events/mod.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Events {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FooEvent`
[INFO] [stderr]   --> src/events/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct FooEvent {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `emit`
[INFO] [stderr]   --> src/events/mod.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |   fn emit<U: 'static + Event>(&mut self, event: U) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/events/mod.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   fn new() -> Events {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/events/mod.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 |   fn new(message: &str) -> FooEvent {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Animal`
[INFO] [stderr]  --> src/lifetimes.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Animal {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `borrow_name`
[INFO] [stderr]  --> src/lifetimes.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   fn borrow_name<'a>(&'a self) -> &'a String {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "0e015293b3a770bf51cbc58a137facf4a0dbd0ce0e335d1d56984f49723f5f77"`
[INFO] running `"docker" "rm" "-f" "0e015293b3a770bf51cbc58a137facf4a0dbd0ce0e335d1d56984f49723f5f77"`
[INFO] [stdout] 0e015293b3a770bf51cbc58a137facf4a0dbd0ce0e335d1d56984f49723f5f77