[INFO] cloning repository https://github.com/frostRed/head_first_design_patterns_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frostRed/head_first_design_patterns_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfrostRed%2Fhead_first_design_patterns_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfrostRed%2Fhead_first_design_patterns_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 779447adaf64ad62404312d51b8363b8602c3552 [INFO] checking frostRed/head_first_design_patterns_rust against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfrostRed%2Fhead_first_design_patterns_rust" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/frostRed/head_first_design_patterns_rust on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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 /workspace/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a42064e421b1458fb90b8927b9c4205344270817bccef341a1c55c9086768bfa [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a42064e421b1458fb90b8927b9c4205344270817bccef341a1c55c9086768bfa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a42064e421b1458fb90b8927b9c4205344270817bccef341a1c55c9086768bfa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a42064e421b1458fb90b8927b9c4205344270817bccef341a1c55c9086768bfa", kill_on_drop: false }` [INFO] [stdout] a42064e421b1458fb90b8927b9c4205344270817bccef341a1c55c9086768bfa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 412d9ebc74aec8779575ec8185e352543c4f08b12c69b6a1ecdc6f37012e69dc [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "412d9ebc74aec8779575ec8185e352543c4f08b12c69b6a1ecdc6f37012e69dc", kill_on_drop: false }` [INFO] [stderr] Checking head_first_design_patterns v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> src/singleton.rs:50:49 [INFO] [stdout] | [INFO] [stdout] 50 | pub static ref C: RwLock = { RwLock::new(ChocolateBoiler::new()) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:19:48 [INFO] [stdout] | [INFO] [stdout] 19 | fn quack_behavior(&self) -> Rc>>; [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:24:46 [INFO] [stdout] | [INFO] [stdout] 24 | fn fly_behavior(&self) -> Rc>>; [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:29:50 [INFO] [stdout] | [INFO] [stdout] 29 | fn set_fly_behavior(&self, fly_behavior: Box) { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:83:36 [INFO] [stdout] | [INFO] [stdout] 83 | quack_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:84:34 [INFO] [stdout] | [INFO] [stdout] 84 | fly_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:90:73 [INFO] [stdout] | [INFO] [stdout] 90 | let fly = Rc::new(RefCell::new(Box::new(FlyWithWings {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:91:68 [INFO] [stdout] | [INFO] [stdout] 91 | let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:103:48 [INFO] [stdout] | [INFO] [stdout] 103 | fn quack_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:106:46 [INFO] [stdout] | [INFO] [stdout] 106 | fn fly_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:113:36 [INFO] [stdout] | [INFO] [stdout] 113 | quack_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:114:34 [INFO] [stdout] | [INFO] [stdout] 114 | fly_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:119:69 [INFO] [stdout] | [INFO] [stdout] 119 | let fly = Rc::new(RefCell::new(Box::new(FlyNoWay {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:120:68 [INFO] [stdout] | [INFO] [stdout] 120 | let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:131:48 [INFO] [stdout] | [INFO] [stdout] 131 | fn quack_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:134:46 [INFO] [stdout] | [INFO] [stdout] 134 | fn fly_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/template_method.rs:5:21 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{self, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Beverage`, `DarkRost`, `Espresso`, `HouseBlend`, `Mocha`, `Soy`, `Whip` [INFO] [stdout] --> src/lib.rs:19:24 [INFO] [stdout] | [INFO] [stdout] 19 | use crate::decorator::{Beverage, DarkRost, Espresso, HouseBlend, Mocha, Soy, Whip}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^ ^^^^^^^^ ^^^^^^^^^^ ^^^^^ ^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `ChicagoPizzaStore`, `NYPizzaStore`, `PizzaStore`, `Pizza` [INFO] [stdout] --> src/lib.rs:20:29 [INFO] [stdout] | [INFO] [stdout] 20 | use crate::factory_method::{ChicagoPizzaStore, NYPizzaStore, Pizza, PizzaStore}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `CurrentConditionsDisplay`, `Subject`, `WeatherDate` [INFO] [stdout] --> src/lib.rs:21:23 [INFO] [stdout] | [INFO] [stdout] 21 | use crate::observer::{CurrentConditionsDisplay, Subject, WeatherDate}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^ ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `C`, `ChocolateBoiler` [INFO] [stdout] --> src/lib.rs:22:24 [INFO] [stdout] | [INFO] [stdout] 22 | use crate::singleton::{ChocolateBoiler, C}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Duck`, `FlyBehavior`, `FlyRocketPowered`, `MallardDuck`, `ModelDuck` [INFO] [stdout] --> src/lib.rs:23:23 [INFO] [stdout] | [INFO] [stdout] 23 | use crate::strategy::{Duck, FlyBehavior, FlyRocketPowered, MallardDuck, ModelDuck}; [INFO] [stdout] | ^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary braces around block return value [INFO] [stdout] --> src/singleton.rs:50:49 [INFO] [stdout] | [INFO] [stdout] 50 | pub static ref C: RwLock = { RwLock::new(ChocolateBoiler::new()) }; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_braces)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:19:48 [INFO] [stdout] | [INFO] [stdout] 19 | fn quack_behavior(&self) -> Rc>>; [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:24:46 [INFO] [stdout] | [INFO] [stdout] 24 | fn fly_behavior(&self) -> Rc>>; [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:29:50 [INFO] [stdout] | [INFO] [stdout] 29 | fn set_fly_behavior(&self, fly_behavior: Box) { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:83:36 [INFO] [stdout] | [INFO] [stdout] 83 | quack_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:84:34 [INFO] [stdout] | [INFO] [stdout] 84 | fly_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:90:73 [INFO] [stdout] | [INFO] [stdout] 90 | let fly = Rc::new(RefCell::new(Box::new(FlyWithWings {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:91:68 [INFO] [stdout] | [INFO] [stdout] 91 | let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:103:48 [INFO] [stdout] | [INFO] [stdout] 103 | fn quack_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:106:46 [INFO] [stdout] | [INFO] [stdout] 106 | fn fly_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:113:36 [INFO] [stdout] | [INFO] [stdout] 113 | quack_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:114:34 [INFO] [stdout] | [INFO] [stdout] 114 | fly_behavior: Rc>>, [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:119:69 [INFO] [stdout] | [INFO] [stdout] 119 | let fly = Rc::new(RefCell::new(Box::new(FlyNoWay {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:120:68 [INFO] [stdout] | [INFO] [stdout] 120 | let quack = Rc::new(RefCell::new(Box::new(Quack {}) as Box)); [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:131:48 [INFO] [stdout] | [INFO] [stdout] 131 | fn quack_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn QuackBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/strategy.rs:134:46 [INFO] [stdout] | [INFO] [stdout] 134 | fn fly_behavior(&self) -> Rc>> { [INFO] [stdout] | ^^^^^^^^^^^ help: use `dyn`: `dyn FlyBehavior` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/template_method.rs:5:21 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{self, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ChocolateBoiler` [INFO] [stdout] --> src/lib.rs:22:24 [INFO] [stdout] | [INFO] [stdout] 22 | use crate::singleton::{ChocolateBoiler, C}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FlyBehavior` [INFO] [stdout] --> src/lib.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | use crate::strategy::{Duck, FlyBehavior, FlyRocketPowered, MallardDuck, ModelDuck}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec>>` in the current scope [INFO] [stdout] --> src/observer.rs:57:24 [INFO] [stdout] | [INFO] [stdout] 57 | self.observers.remove_item(&o) [INFO] [stdout] | ^^^^^^^^^^^ method not found in `Vec>>` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `head_first_design_patterns` [INFO] [stdout] error: aborting due to previous error; 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec>>` in the current scope [INFO] [stdout] --> src/observer.rs:57:24 [INFO] [stdout] | [INFO] [stdout] 57 | self.observers.remove_item(&o) [INFO] [stdout] | ^^^^^^^^^^^ method not found in `Vec>>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Pizza` [INFO] [stdout] --> src/lib.rs:20:62 [INFO] [stdout] | [INFO] [stdout] 20 | use crate::factory_method::{ChicagoPizzaStore, NYPizzaStore, Pizza, PizzaStore}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "412d9ebc74aec8779575ec8185e352543c4f08b12c69b6a1ecdc6f37012e69dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "412d9ebc74aec8779575ec8185e352543c4f08b12c69b6a1ecdc6f37012e69dc", kill_on_drop: false }` [INFO] [stdout] 412d9ebc74aec8779575ec8185e352543c4f08b12c69b6a1ecdc6f37012e69dc