[INFO] updating cached repository alexander-smoktal/rust-patterns
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alexander-smoktal/rust-patterns
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alexander-smoktal/rust-patterns" "work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/rust-patterns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/rust-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alexander-smoktal/rust-patterns" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexander-smoktal/rust-patterns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexander-smoktal/rust-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 351757356846d4b50d614316b3e53d5a3cf6dea9
[INFO] sha for GitHub repo alexander-smoktal/rust-patterns: 351757356846d4b50d614316b3e53d5a3cf6dea9
[INFO] validating manifest of alexander-smoktal/rust-patterns on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alexander-smoktal/rust-patterns on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alexander-smoktal/rust-patterns
[INFO] finished frobbing alexander-smoktal/rust-patterns
[INFO] frobbed toml for alexander-smoktal/rust-patterns written to work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/rust-patterns/Cargo.toml
[INFO] started frobbing alexander-smoktal/rust-patterns
[INFO] finished frobbing alexander-smoktal/rust-patterns
[INFO] frobbed toml for alexander-smoktal/rust-patterns written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alexander-smoktal/rust-patterns/Cargo.toml
[INFO] crate alexander-smoktal/rust-patterns already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing alexander-smoktal/rust-patterns against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b98ed5307d2147e42f5705557003de1b122ded1369401a9fb371e4b9762adfe9
[INFO] running `"docker" "start" "-a" "b98ed5307d2147e42f5705557003de1b122ded1369401a9fb371e4b9762adfe9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lazy_static v0.2.10
[INFO] [stderr]    Compiling rust-patterns v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:43:28
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn merge(self, other: &MergeCoin) -> Self
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:49:28
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn merge(self, other: &MergeCoin) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:55:28
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn merge(self, other: &MergeCoin) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/chain_of_responsibility.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     next: Option<Box<CurrencyPrinter>>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CurrencyPrinter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/chain_of_responsibility.rs:31:33
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn new(next: Option<Box<CurrencyPrinter>>) -> Self {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CurrencyPrinter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/bridge.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 |     currency: Box<IntoUSD>,
[INFO] [stderr]    |                   ^^^^^^^ help: use `dyn`: `dyn IntoUSD`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/bridge.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(currency: Box<IntoUSD>) -> Self {
[INFO] [stderr]    |                              ^^^^^^^ help: use `dyn`: `dyn IntoUSD`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:47:50
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>>;
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:61:50
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>> {
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:89:50
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>> {
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/creational/abstract_factory.rs:107:29
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let wallet_vec: Vec<Box<Wallet>> = vec![
[INFO] [stderr]     |                             ^^^^^^ help: use `dyn`: `dyn Wallet`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/behavioral/strategy.rs:7:42
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub type SpendStrategyFunction = fn(&mut SpendStrategy, f32);
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpendStrategy`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type EventHandler = fn(&mut Box<EventListener>, &Block);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:19:55
[INFO] [stderr]    |
[INFO] [stderr] 19 |     listeners: HashMap<EventType, Vec<(Rc<RefCell<Box<EventListener>>>, EventHandler)>>,
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:30:34
[INFO] [stderr]    |
[INFO] [stderr] 30 |         listener: Rc<RefCell<Box<EventListener>>>,
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:60:42
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn block_created(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:64:44
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn block_destroyed(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:75:42
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn block_updated(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:82:51
[INFO] [stderr]    |
[INFO] [stderr] 82 |         Box::new(BlockLifetimeListener {}) as Box<EventListener>,
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:85:49
[INFO] [stderr]    |
[INFO] [stderr] 85 |         Box::new(BlockUpdateListener {}) as Box<EventListener>,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/state.rs:16:22
[INFO] [stderr]    |
[INFO] [stderr] 16 |     wallets: Vec<Box<MoneyHandler>>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn MoneyHandler`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/state.rs:21:33
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(wallets: Vec<Box<MoneyHandler>>) -> WalletBalancer {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn MoneyHandler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:15:62
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn register_observer(&mut self, observer: Rc<RefCell<Box<Observer>>>);
[INFO] [stderr]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 |     observables: Vec<Rc<RefCell<Box<Observer>>>>,
[INFO] [stderr]    |                                     ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:67:62
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn register_observer(&mut self, observer: Rc<RefCell<Box<Observer>>>) {
[INFO] [stderr]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:82:78
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let usd_observer = Rc::new(RefCell::new(Box::new(USDObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:85:82
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let btc_observer = Rc::new(RefCell::new(Box::new(BitcoinObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                                  ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:88:83
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let eth_observer = Rc::new(RefCell::new(Box::new(EtheriumObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                                   ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/adapter.rs:86:29
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let wallet_vec: Vec<Box<Wallet>> = vec![
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Wallet`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.41s
[INFO] running `"docker" "inspect" "b98ed5307d2147e42f5705557003de1b122ded1369401a9fb371e4b9762adfe9"`
[INFO] running `"docker" "rm" "-f" "b98ed5307d2147e42f5705557003de1b122ded1369401a9fb371e4b9762adfe9"`
[INFO] [stdout] b98ed5307d2147e42f5705557003de1b122ded1369401a9fb371e4b9762adfe9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] df0e00f96acf99754d367c48fa97e47622178be6b9a188505da876c459aae71e
[INFO] running `"docker" "start" "-a" "df0e00f96acf99754d367c48fa97e47622178be6b9a188505da876c459aae71e"`
[INFO] [stderr]    Compiling rust-patterns v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:15:62
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn register_observer(&mut self, observer: Rc<RefCell<Box<Observer>>>);
[INFO] [stderr]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 |     observables: Vec<Rc<RefCell<Box<Observer>>>>,
[INFO] [stderr]    |                                     ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:67:62
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn register_observer(&mut self, observer: Rc<RefCell<Box<Observer>>>) {
[INFO] [stderr]    |                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:82:78
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let usd_observer = Rc::new(RefCell::new(Box::new(USDObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                              ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:85:82
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let btc_observer = Rc::new(RefCell::new(Box::new(BitcoinObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                                  ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/observer.rs:88:83
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let eth_observer = Rc::new(RefCell::new(Box::new(EtheriumObserver) as Box<Observer>));
[INFO] [stderr]    |                                                                                   ^^^^^^^^ help: use `dyn`: `dyn Observer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:47:50
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>>;
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:61:50
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>> {
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/abstract_factory.rs:89:50
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn get(&mut self, amount: USD) -> Option<Box<Coin>> {
[INFO] [stderr]    |                                                  ^^^^ help: use `dyn`: `dyn Coin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/creational/abstract_factory.rs:107:29
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let wallet_vec: Vec<Box<Wallet>> = vec![
[INFO] [stderr]     |                             ^^^^^^ help: use `dyn`: `dyn Wallet`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/chain_of_responsibility.rs:24:22
[INFO] [stderr]    |
[INFO] [stderr] 24 |     next: Option<Box<CurrencyPrinter>>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CurrencyPrinter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/chain_of_responsibility.rs:31:33
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn new(next: Option<Box<CurrencyPrinter>>) -> Self {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CurrencyPrinter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/state.rs:16:22
[INFO] [stderr]    |
[INFO] [stderr] 16 |     wallets: Vec<Box<MoneyHandler>>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn MoneyHandler`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/state.rs:21:33
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(wallets: Vec<Box<MoneyHandler>>) -> WalletBalancer {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn MoneyHandler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/behavioral/strategy.rs:7:42
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub type SpendStrategyFunction = fn(&mut SpendStrategy, f32);
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn SpendStrategy`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:43:28
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn merge(self, other: &MergeCoin) -> Self
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:49:28
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn merge(self, other: &MergeCoin) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/creational/factory_method.rs:55:28
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn merge(self, other: &MergeCoin) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn MergeCoin`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type EventHandler = fn(&mut Box<EventListener>, &Block);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:19:55
[INFO] [stderr]    |
[INFO] [stderr] 19 |     listeners: HashMap<EventType, Vec<(Rc<RefCell<Box<EventListener>>>, EventHandler)>>,
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:30:34
[INFO] [stderr]    |
[INFO] [stderr] 30 |         listener: Rc<RefCell<Box<EventListener>>>,
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:60:42
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn block_created(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:64:44
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn block_destroyed(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:75:42
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn block_updated(_this: &mut Box<EventListener>, _block: &Block) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:82:51
[INFO] [stderr]    |
[INFO] [stderr] 82 |         Box::new(BlockLifetimeListener {}) as Box<EventListener>,
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/behavioral/mediator.rs:85:49
[INFO] [stderr]    |
[INFO] [stderr] 85 |         Box::new(BlockUpdateListener {}) as Box<EventListener>,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn EventListener`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/bridge.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 |     currency: Box<IntoUSD>,
[INFO] [stderr]    |                   ^^^^^^^ help: use `dyn`: `dyn IntoUSD`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/bridge.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(currency: Box<IntoUSD>) -> Self {
[INFO] [stderr]    |                              ^^^^^^^ help: use `dyn`: `dyn IntoUSD`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/structural/adapter.rs:86:29
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let wallet_vec: Vec<Box<Wallet>> = vec![
[INFO] [stderr]    |                             ^^^^^^ help: use `dyn`: `dyn Wallet`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.45s
[INFO] running `"docker" "inspect" "df0e00f96acf99754d367c48fa97e47622178be6b9a188505da876c459aae71e"`
[INFO] running `"docker" "rm" "-f" "df0e00f96acf99754d367c48fa97e47622178be6b9a188505da876c459aae71e"`
[INFO] [stdout] df0e00f96acf99754d367c48fa97e47622178be6b9a188505da876c459aae71e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alexander-smoktal/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ddd9e3a99b8723c6f325f7a9a9faf40d9d309cdd50c0487b5308261cae895d03
[INFO] running `"docker" "start" "-a" "ddd9e3a99b8723c6f325f7a9a9faf40d9d309cdd50c0487b5308261cae895d03"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_patterns-fc80c44a85e187d5
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/bridge-1b69d38ac99e5e64
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/builder-b64cfdbdb45c0d38
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chain_of_responsibility-a534d4c231ad900c
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/decorator-deeb5bc4954567ce
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/facade-af75111c919395bf
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/iterator-21e267043ffc88f8
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mediator-d56a2ce30385e945
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/memento-6e3fcf1b74f2eca6
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/observer-b5a492860909ae91
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/prototype-46bd5f00e13c1958
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/proxy-66b39f1ab1832436
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/singleton-b5ed5666825a7284
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/state-4760189f14905df3
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/strategy-3e3578ea71667848
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/visitor-418a70e8e3e50275
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[INFO] [stderr]    Doc-tests rust-patterns
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[INFO] running `"docker" "inspect" "ddd9e3a99b8723c6f325f7a9a9faf40d9d309cdd50c0487b5308261cae895d03"`
[INFO] running `"docker" "rm" "-f" "ddd9e3a99b8723c6f325f7a9a9faf40d9d309cdd50c0487b5308261cae895d03"`
[INFO] [stdout] ddd9e3a99b8723c6f325f7a9a9faf40d9d309cdd50c0487b5308261cae895d03