[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/beta-1.37-6/sources/1.36.0/gh/jarrett/rust-patterns"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jarrett/rust-patterns'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/jarrett/rust-patterns" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jarrett/rust-patterns"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of jarrett/rust-patterns on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/jarrett/rust-patterns/Cargo.toml [INFO] crate jarrett/rust-patterns already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing jarrett/rust-patterns against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jarrett/rust-patterns:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "build" "--frozen"` [INFO] [stdout] ac5020f77bbdbffe2e8f42249044acfdc334e4c0ecef38e1f8afc94bb4b8934a [INFO] running `"docker" "start" "-a" "ac5020f77bbdbffe2e8f42249044acfdc334e4c0ecef38e1f8afc94bb4b8934a"` [INFO] [stderr] Compiling uuid v0.6.2 [INFO] [stderr] Compiling 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>) { [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 = Rc>; [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 { [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(&self, f: F) -> Option [INFO] [stderr] 23 | | where U: 'static, F: FnOnce(&U) -> V [INFO] [stderr] 24 | | { [INFO] [stderr] 25 | | self.event.as_any().downcast_ref::().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) -> Vec> { [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 { [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 { [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> [INFO] [stderr] 53 | | ) -> &'a Rc> { [INFO] [stderr] 54 | | registry.get(&self.uuid).unwrap().downcast_ref::>>().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(&self, f: F) -> Option [INFO] [stderr] 60 | | where U: 'static, F: FnOnce(&U) -> V [INFO] [stderr] 61 | | { [INFO] [stderr] 62 | | self.event.as_any().downcast_ref::().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) -> Vec> { [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(&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 1.58s [INFO] running `"docker" "inspect" "ac5020f77bbdbffe2e8f42249044acfdc334e4c0ecef38e1f8afc94bb4b8934a"` [INFO] running `"docker" "rm" "-f" "ac5020f77bbdbffe2e8f42249044acfdc334e4c0ecef38e1f8afc94bb4b8934a"` [INFO] [stdout] ac5020f77bbdbffe2e8f42249044acfdc334e4c0ecef38e1f8afc94bb4b8934a [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jarrett/rust-patterns:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] e6f25942cec3bc06fe64d4d3ac1e1be98bce028524f69d632b8bd885a2577f86 [INFO] running `"docker" "start" "-a" "e6f25942cec3bc06fe64d4d3ac1e1be98bce028524f69d632b8bd885a2577f86"` [INFO] [stderr] Compiling rust-patterns v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.42s [INFO] running `"docker" "inspect" "e6f25942cec3bc06fe64d4d3ac1e1be98bce028524f69d632b8bd885a2577f86"` [INFO] running `"docker" "rm" "-f" "e6f25942cec3bc06fe64d4d3ac1e1be98bce028524f69d632b8bd885a2577f86"` [INFO] [stdout] e6f25942cec3bc06fe64d4d3ac1e1be98bce028524f69d632b8bd885a2577f86 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jarrett/rust-patterns:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.36.0" "test" "--frozen"` [INFO] [stdout] 8bcd89b1fc80d6a81732f3d1d8556659342235891fec4521ed9bd497f9e9a3f1 [INFO] running `"docker" "start" "-a" "8bcd89b1fc80d6a81732f3d1d8556659342235891fec4521ed9bd497f9e9a3f1"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/rust_patterns-e622724c130d16e4 [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test any::tests::example ... ok [INFO] [stdout] test events::uuid::tests::example ... ok [INFO] [stdout] test events::pointer::tests::example ... ok [INFO] [stdout] test lifetimes::tests::borrow_struct_field ... ok [INFO] [stdout] test mutability::tests::example ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "8bcd89b1fc80d6a81732f3d1d8556659342235891fec4521ed9bd497f9e9a3f1"` [INFO] running `"docker" "rm" "-f" "8bcd89b1fc80d6a81732f3d1d8556659342235891fec4521ed9bd497f9e9a3f1"` [INFO] [stdout] 8bcd89b1fc80d6a81732f3d1d8556659342235891fec4521ed9bd497f9e9a3f1