[INFO] updating cached repository https://github.com/frostRed/head_first_design_patterns_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 779447adaf64ad62404312d51b8363b8602c3552
[INFO] testing frostRed/head_first_design_patterns_rust against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FfrostRed%2Fhead_first_design_patterns_rust" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frostRed/head_first_design_patterns_rust on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/frostRed/head_first_design_patterns_rust
[INFO] finished tweaking git repo https://github.com/frostRed/head_first_design_patterns_rust
[INFO] tweaked toml for git repo https://github.com/frostRed/head_first_design_patterns_rust written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/frostRed/head_first_design_patterns_rust already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a14cd9554f7f5ab7fcdd03d15b6f609edc24a79ed59034d327ca20c04c2e70f7
[INFO] running `"docker" "start" "-a" "a14cd9554f7f5ab7fcdd03d15b6f609edc24a79ed59034d327ca20c04c2e70f7"`
[INFO] [stderr]    Compiling head_first_design_patterns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:19:48
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn quack_behavior(&self) -> Rc<RefCell<Box<QuackBehavior>>>;
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[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/strategy.rs:24:46
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn fly_behavior(&self) -> Rc<RefCell<Box<FlyBehavior>>>;
[INFO] [stderr]    |                                              ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:29:50
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn set_fly_behavior(&self, fly_behavior: Box<FlyBehavior>) {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:83:36
[INFO] [stderr]    |
[INFO] [stderr] 83 |     quack_behavior: Rc<RefCell<Box<QuackBehavior>>>,
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:84:34
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fly_behavior: Rc<RefCell<Box<FlyBehavior>>>,
[INFO] [stderr]    |                                  ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:90:73
[INFO] [stderr]    |
[INFO] [stderr] 90 |         let fly = Rc::new(RefCell::new(Box::new(FlyWithWings {}) as Box<FlyBehavior>));
[INFO] [stderr]    |                                                                         ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/strategy.rs:91:68
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box<QuackBehavior>));
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:103:48
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn quack_behavior(&self) -> Rc<RefCell<Box<QuackBehavior>>> {
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:106:46
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn fly_behavior(&self) -> Rc<RefCell<Box<FlyBehavior>>> {
[INFO] [stderr]     |                                              ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:113:36
[INFO] [stderr]     |
[INFO] [stderr] 113 |     quack_behavior: Rc<RefCell<Box<QuackBehavior>>>,
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:114:34
[INFO] [stderr]     |
[INFO] [stderr] 114 |     fly_behavior: Rc<RefCell<Box<FlyBehavior>>>,
[INFO] [stderr]     |                                  ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:119:69
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let fly = Rc::new(RefCell::new(Box::new(FlyNoWay {}) as Box<FlyBehavior>));
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:120:68
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box<QuackBehavior>));
[INFO] [stderr]     |                                                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:131:48
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn quack_behavior(&self) -> Rc<RefCell<Box<QuackBehavior>>> {
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/strategy.rs:134:46
[INFO] [stderr]     |
[INFO] [stderr] 134 |     fn fly_behavior(&self) -> Rc<RefCell<Box<FlyBehavior>>> {
[INFO] [stderr]     |                                              ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/template_method.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, Read};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Beverage`, `DarkRost`, `Espresso`, `HouseBlend`, `Mocha`, `Soy`, `Whip`
[INFO] [stderr]   --> src/lib.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 | use crate::decorator::{Beverage, DarkRost, Espresso, HouseBlend, Mocha, Soy, Whip};
[INFO] [stderr]    |                        ^^^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^  ^^^^^  ^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ChicagoPizzaStore`, `NYPizzaStore`, `PizzaStore`, `Pizza`
[INFO] [stderr]   --> src/lib.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 | use crate::factory_method::{ChicagoPizzaStore, NYPizzaStore, Pizza, PizzaStore};
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CurrentConditionsDisplay`, `Subject`, `WeatherDate`
[INFO] [stderr]   --> src/lib.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 | use crate::observer::{CurrentConditionsDisplay, Subject, WeatherDate};
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `C`, `ChocolateBoiler`
[INFO] [stderr]   --> src/lib.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 | use crate::singleton::{ChocolateBoiler, C};
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^  ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Duck`, `FlyBehavior`, `FlyRocketPowered`, `MallardDuck`, `ModelDuck`
[INFO] [stderr]   --> src/lib.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 | use crate::strategy::{Duck, FlyBehavior, FlyRocketPowered, MallardDuck, ModelDuck};
[INFO] [stderr]    |                       ^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `head_first_design_patterns`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a14cd9554f7f5ab7fcdd03d15b6f609edc24a79ed59034d327ca20c04c2e70f7"`
[INFO] running `"docker" "rm" "-f" "a14cd9554f7f5ab7fcdd03d15b6f609edc24a79ed59034d327ca20c04c2e70f7"`
[INFO] [stdout] a14cd9554f7f5ab7fcdd03d15b6f609edc24a79ed59034d327ca20c04c2e70f7