Dec 14 06:18:03.431 INFO testing Ryan-Git/learn-rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550 Dec 14 06:18:03.431 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Dec 14 06:18:03.665 INFO [stdout] a6e1edd18ffb51e08d104623335a4ef956a7d04fb9f7b05724304b047ac9a7e4 Dec 14 06:18:03.668 INFO running `"docker" "start" "-a" "a6e1edd18ffb51e08d104623335a4ef956a7d04fb9f7b05724304b047ac9a7e4"` Dec 14 06:18:04.279 INFO [stderr] usermod: no changes Dec 14 06:18:04.354 INFO [stderr] Compiling learn-rust v0.1.0 (/source) Dec 14 06:18:04.735 INFO [stderr] warning: unused imports: `Cons`, `Nil` Dec 14 06:18:04.735 INFO [stderr] --> src/ch15_smart_pointers/ch15_4_rc.rs:11:18 Dec 14 06:18:04.735 INFO [stderr] | Dec 14 06:18:04.735 INFO [stderr] 11 | use self::List::{Cons, Nil}; Dec 14 06:18:04.735 INFO [stderr] | ^^^^ ^^^ Dec 14 06:18:04.735 INFO [stderr] | Dec 14 06:18:04.735 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 14 06:18:04.735 INFO [stderr] Dec 14 06:18:04.735 INFO [stderr] warning: unused imports: `Cons`, `Nil` Dec 14 06:18:04.735 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:41:18 Dec 14 06:18:04.735 INFO [stderr] | Dec 14 06:18:04.735 INFO [stderr] 41 | use self::List::{Cons, Nil}; Dec 14 06:18:04.735 INFO [stderr] | ^^^^ ^^^ Dec 14 06:18:04.735 INFO [stderr] Dec 14 06:18:04.735 INFO [stderr] warning: unused import: `std::thread` Dec 14 06:18:04.735 INFO [stderr] --> src/ch16_concurrency/ch16_1_threads.rs:1:5 Dec 14 06:18:04.735 INFO [stderr] | Dec 14 06:18:04.735 INFO [stderr] 1 | use std::thread; Dec 14 06:18:04.735 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.735 INFO [stderr] Dec 14 06:18:04.735 INFO [stderr] warning: unused import: `std::sync::mpsc` Dec 14 06:18:04.735 INFO [stderr] --> src/ch16_concurrency/ch16_2_message_passing.rs:1:5 Dec 14 06:18:04.735 INFO [stderr] | Dec 14 06:18:04.735 INFO [stderr] 1 | use std::sync::mpsc; Dec 14 06:18:04.796 INFO [stderr] | ^^^^^^^^^^^^^^^ Dec 14 06:18:04.796 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused import: `std::thread` Dec 14 06:18:04.797 INFO [stderr] --> src/ch16_concurrency/ch16_2_message_passing.rs:2:5 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 2 | use std::thread; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused import: `std::time::Duration` Dec 14 06:18:04.797 INFO [stderr] --> src/ch16_concurrency/ch16_2_message_passing.rs:3:5 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 3 | use std::time::Duration; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused imports: `Arc`, `Mutex` Dec 14 06:18:04.797 INFO [stderr] --> src/ch16_concurrency/ch16_3_shared_state.rs:1:17 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 1 | use std::sync::{Mutex, Arc}; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^ ^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused import: `std::thread` Dec 14 06:18:04.797 INFO [stderr] --> src/ch16_concurrency/ch16_3_shared_state.rs:2:5 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 2 | use std::thread; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused import: `std::rc::Rc` Dec 14 06:18:04.797 INFO [stderr] --> src/ch16_concurrency/ch16_3_shared_state.rs:3:5 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 3 | use std::rc::Rc; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.797 INFO [stderr] warning: unused import: `std::io` Dec 14 06:18:04.797 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:4:5 Dec 14 06:18:04.797 INFO [stderr] | Dec 14 06:18:04.797 INFO [stderr] 4 | use std::io; Dec 14 06:18:04.797 INFO [stderr] | ^^^^^^^ Dec 14 06:18:04.797 INFO [stderr] Dec 14 06:18:04.850 INFO [stderr] warning: unused variable: `ip_type` Dec 14 06:18:04.850 INFO [stderr] --> src/ch6_enums.rs:53:10 Dec 14 06:18:04.850 INFO [stderr] | Dec 14 06:18:04.850 INFO [stderr] 53 | fn route(ip_type: IpAddrKind) {} Dec 14 06:18:04.850 INFO [stderr] | ^^^^^^^ help: consider using `_ip_type` instead Dec 14 06:18:04.850 INFO [stderr] | Dec 14 06:18:04.850 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 14 06:18:04.850 INFO [stderr] Dec 14 06:18:04.850 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:04.850 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:58 Dec 14 06:18:04.850 INFO [stderr] | Dec 14 06:18:04.850 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:04.850 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:04.850 INFO [stderr] Dec 14 06:18:04.850 INFO [stderr] warning: unused variable: `u` Dec 14 06:18:04.850 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:64 Dec 14 06:18:04.850 INFO [stderr] | Dec 14 06:18:04.850 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:04.850 INFO [stderr] | ^ help: consider using `_u` instead Dec 14 06:18:04.850 INFO [stderr] Dec 14 06:18:04.850 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:04.850 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:25 Dec 14 06:18:04.850 INFO [stderr] | Dec 14 06:18:04.850 INFO [stderr] 117 | fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:04.850 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `u` Dec 14 06:18:04.851 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:31 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 117 | fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:04.851 INFO [stderr] | ^ help: consider using `_u` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `c1` Dec 14 06:18:04.851 INFO [stderr] --> src/ch14_cargo_crates.rs:37:16 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 37 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { Dec 14 06:18:04.851 INFO [stderr] | ^^ help: consider using `_c1` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `c2` Dec 14 06:18:04.851 INFO [stderr] --> src/ch14_cargo_crates.rs:37:34 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 37 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { Dec 14 06:18:04.851 INFO [stderr] | ^^ help: consider using `_c2` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `x` Dec 14 06:18:04.851 INFO [stderr] --> src/ch18_pattern_match.rs:245:8 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 245 | fn foo(x: i32) { Dec 14 06:18:04.851 INFO [stderr] | ^ help: consider using `_x` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:37 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:48 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:59 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:25 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:36 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:53 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:04.851 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:19 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:41 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:52 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.851 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:35:13 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 35 | fn traverse(graph: &AGraph) {} Dec 14 06:18:04.851 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:18:15 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 18 | fn generic(t: T){} Dec 14 06:18:04.851 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:19:23 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 19 | fn generic2(t: T) {} Dec 14 06:18:04.851 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:04.851 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:20:24 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 20 | fn generic3(t: &T) {} Dec 14 06:18:04.851 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `post` Dec 14 06:18:04.851 INFO [stderr] --> src/ch17_oop/mod.rs:184:27 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 184 | fn content<'a>(&self, post: &'a Post) -> &'a str { Dec 14 06:18:04.851 INFO [stderr] | ^^^^ help: consider using `_post` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `content` Dec 14 06:18:04.851 INFO [stderr] --> src/ch17_oop/mod.rs:188:24 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 188 | fn add_text(&self, content: &mut String, text: &str) {} Dec 14 06:18:04.851 INFO [stderr] | ^^^^^^^ help: consider using `_content` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.851 INFO [stderr] warning: unused variable: `text` Dec 14 06:18:04.851 INFO [stderr] --> src/ch17_oop/mod.rs:188:46 Dec 14 06:18:04.851 INFO [stderr] | Dec 14 06:18:04.851 INFO [stderr] 188 | fn add_text(&self, content: &mut String, text: &str) {} Dec 14 06:18:04.851 INFO [stderr] | ^^^^ help: consider using `_text` instead Dec 14 06:18:04.851 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `takes_ownership` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:105:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 105 | fn takes_ownership(some_string: String) { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `makes_copy` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:111:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 111 | fn makes_copy(some_integer: i32) { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `gives_ownership` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:116:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 116 | fn gives_ownership() -> String { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `takes_and_gives_back` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:129:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 129 | fn takes_and_gives_back(a_string: String) -> String { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `calculate_length` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:136:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 136 | fn calculate_length(s: &String) -> usize { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `change` Dec 14 06:18:04.896 INFO [stderr] --> src/ch4_ownership.rs:142:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 142 | fn change(some_string: &mut String) { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: struct is never constructed: `Rectangle` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_rectangle.rs:2:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 2 | struct Rectangle { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: method is never used: `area` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_rectangle.rs:8:5 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 8 | fn area(&self) -> u32 { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: method is never used: `can_hold` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_rectangle.rs:12:5 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 12 | fn can_hold(&self, other: &Rectangle) -> bool { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: method is never used: `square` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_rectangle.rs:17:5 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 17 | fn square(size: u32) -> Rectangle { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `area_rec` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_rectangle.rs:42:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 42 | fn area_rec(rec: &Rectangle) -> u32 { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: struct is never constructed: `User` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_structs.rs:1:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 1 | struct User { Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: struct is never constructed: `Color` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_structs.rs:9:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 9 | struct Color(i32, i32, i32); Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: struct is never constructed: `Point` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_structs.rs:11:1 Dec 14 06:18:04.896 INFO [stderr] | Dec 14 06:18:04.896 INFO [stderr] 11 | struct Point(i32, i32, i32); Dec 14 06:18:04.896 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.896 INFO [stderr] Dec 14 06:18:04.896 INFO [stderr] warning: function is never used: `build_user` Dec 14 06:18:04.896 INFO [stderr] --> src/ch5_structs.rs:34:1 Dec 14 06:18:04.897 INFO [stderr] | Dec 14 06:18:04.897 INFO [stderr] 34 | fn build_user(email: String, username: String) -> User { Dec 14 06:18:04.897 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.897 INFO [stderr] Dec 14 06:18:04.897 INFO [stderr] warning: enum is never used: `IpAddrKind` Dec 14 06:18:04.897 INFO [stderr] --> src/ch6_enums.rs:1:1 Dec 14 06:18:04.897 INFO [stderr] | Dec 14 06:18:04.897 INFO [stderr] 1 | enum IpAddrKind { Dec 14 06:18:04.897 INFO [stderr] | ^^^^^^^^^^^^^^^ Dec 14 06:18:04.897 INFO [stderr] Dec 14 06:18:04.897 INFO [stderr] warning: enum is never used: `UsState` Dec 14 06:18:04.897 INFO [stderr] --> src/ch6_enums.rs:7:1 Dec 14 06:18:04.897 INFO [stderr] | Dec 14 06:18:04.897 INFO [stderr] 7 | enum UsState { Dec 14 06:18:04.897 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.898 INFO [stderr] Dec 14 06:18:04.898 INFO [stderr] warning: enum is never used: `Coin` Dec 14 06:18:04.898 INFO [stderr] --> src/ch6_enums.rs:13:1 Dec 14 06:18:04.898 INFO [stderr] | Dec 14 06:18:04.898 INFO [stderr] 13 | enum Coin { Dec 14 06:18:04.898 INFO [stderr] | ^^^^^^^^^ Dec 14 06:18:04.898 INFO [stderr] Dec 14 06:18:04.898 INFO [stderr] warning: function is never used: `value_in_cents` Dec 14 06:18:04.899 INFO [stderr] --> src/ch6_enums.rs:20:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 20 | fn value_in_cents(coin: Coin) -> u32 { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `route` Dec 14 06:18:04.899 INFO [stderr] --> src/ch6_enums.rs:53:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 53 | fn route(ip_type: IpAddrKind) {} Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `nested_modules` Dec 14 06:18:04.899 INFO [stderr] --> src/ch7_modules.rs:21:13 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 21 | pub fn nested_modules() {} Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `read_username_from_file` Dec 14 06:18:04.899 INFO [stderr] --> src/ch9_error.rs:44:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 44 | fn read_username_from_file() -> Result { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `read_username_from_file2` Dec 14 06:18:04.899 INFO [stderr] --> src/ch9_error.rs:60:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 60 | fn read_username_from_file2() -> Result { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `read_username_from_file3` Dec 14 06:18:04.899 INFO [stderr] --> src/ch9_error.rs:67:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 67 | fn read_username_from_file3() -> Result { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `longest` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:75:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 75 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `longest_with_an_announcement` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:83:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 83 | / fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str Dec 14 06:18:04.899 INFO [stderr] 84 | | where T: Display Dec 14 06:18:04.899 INFO [stderr] 85 | | { Dec 14 06:18:04.899 INFO [stderr] 86 | | println!("Announcement! {}", ann); Dec 14 06:18:04.899 INFO [stderr] ... | Dec 14 06:18:04.899 INFO [stderr] 91 | | } Dec 14 06:18:04.899 INFO [stderr] 92 | | } Dec 14 06:18:04.899 INFO [stderr] | |_^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: struct is never constructed: `ImportantExcerpt` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:94:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 94 | struct ImportantExcerpt<'a> { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: method is never used: `level` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:99:5 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 99 | fn level(&self) -> i32 { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: method is never used: `announce_and_return_part` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:103:5 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 103 | fn announce_and_return_part(&self, announcement: &str) -> &str { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `notify` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:109:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.899 INFO [stderr] 109 | fn notify(item: T) { Dec 14 06:18:04.899 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.899 INFO [stderr] Dec 14 06:18:04.899 INFO [stderr] warning: function is never used: `some_function` Dec 14 06:18:04.899 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:1 Dec 14 06:18:04.899 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: function is never used: `some_function2` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 117 | / fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:04.900 INFO [stderr] 118 | | where T: Display + Clone, Dec 14 06:18:04.900 INFO [stderr] 119 | | U: Clone + Display { Dec 14 06:18:04.900 INFO [stderr] 120 | | 1 Dec 14 06:18:04.900 INFO [stderr] 121 | | } Dec 14 06:18:04.900 INFO [stderr] | |_^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: function is never used: `largest` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:123:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 123 | fn largest(list: &[i32]) -> i32 { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: function is never used: `largest2` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:135:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 135 | fn largest2(list: &[T]) -> &T { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: struct is never constructed: `Point` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:147:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 147 | struct Point { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: method is never used: `x` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:153:5 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 153 | fn x(&self) -> &T { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: struct is never constructed: `Point2` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:158:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 158 | struct Point2 { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: method is never used: `mixup` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:164:5 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 164 | fn mixup(self, other: Point2) -> Point2 { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.900 INFO [stderr] warning: enum is never used: `Option` Dec 14 06:18:04.900 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:172:1 Dec 14 06:18:04.900 INFO [stderr] | Dec 14 06:18:04.900 INFO [stderr] 172 | enum Option { Dec 14 06:18:04.900 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:04.900 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `NewsArticle` Dec 14 06:18:04.901 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:185:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 185 | struct NewsArticle { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Tweet` Dec 14 06:18:04.901 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:198:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 198 | struct Tweet { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: function is never used: `add_two` Dec 14 06:18:04.901 INFO [stderr] --> src/ch11_test.rs:20:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 20 | fn add_two(a: i32) -> i32 { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Guess` Dec 14 06:18:04.901 INFO [stderr] --> src/ch11_test.rs:24:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 24 | struct Guess { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: method is never used: `new` Dec 14 06:18:04.901 INFO [stderr] --> src/ch11_test.rs:29:5 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 29 | pub fn new(value: u32) -> Guess { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Rectangle` Dec 14 06:18:04.901 INFO [stderr] --> src/ch11_test.rs:41:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 41 | pub struct Rectangle { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: method is never used: `can_hold` Dec 14 06:18:04.901 INFO [stderr] --> src/ch11_test.rs:47:5 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 47 | pub fn can_hold(&self, other: &Rectangle) -> bool { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Counter` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:127:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 127 | struct Counter { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: method is never used: `new` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:132:5 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 132 | fn new() -> Counter { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: function is never used: `shoes_in_my_size` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:157:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 157 | fn shoes_in_my_size(shoes: Vec, shoe_size: i32) -> Vec { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Cacher` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:177:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 177 | / struct Cacher Dec 14 06:18:04.901 INFO [stderr] 178 | | where Dec 14 06:18:04.901 INFO [stderr] 179 | | T: Fn(P) -> R, Dec 14 06:18:04.901 INFO [stderr] 180 | | P: std::hash::Hash + Eq + Copy, Dec 14 06:18:04.901 INFO [stderr] ... | Dec 14 06:18:04.901 INFO [stderr] 184 | | result: HashMap, Dec 14 06:18:04.901 INFO [stderr] 185 | | } Dec 14 06:18:04.901 INFO [stderr] | |_^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: method is never used: `new` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:193:5 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 193 | fn new(calculation: T) -> Cacher { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: method is never used: `value` Dec 14 06:18:04.901 INFO [stderr] --> src/ch13_fp.rs:200:5 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 200 | fn value(&mut self, arg: P) -> R { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: enum is never used: `List` Dec 14 06:18:04.901 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:8:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 8 | enum List { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `Mp3` Dec 14 06:18:04.901 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:24:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.901 INFO [stderr] 24 | struct Mp3 { Dec 14 06:18:04.901 INFO [stderr] | ^^^^^^^^^^ Dec 14 06:18:04.901 INFO [stderr] Dec 14 06:18:04.901 INFO [stderr] warning: struct is never constructed: `CustomSmartPointer` Dec 14 06:18:04.901 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:72:1 Dec 14 06:18:04.901 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 72 | struct CustomSmartPointer { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: enum is never used: `List` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_4_rc.rs:6:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 6 | enum List { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: function is never used: `a_fn_that_immutably_borrows` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:6:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 6 | fn a_fn_that_immutably_borrows(a: &i32){ Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: function is never used: `a_fn_that_mutably_borrows` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:10:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 10 | fn a_fn_that_mutably_borrows(b: &mut i32){ Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: function is never used: `demo` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:14:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 14 | fn demo(r: &RefCell){ Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: enum is never used: `List` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:36:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 36 | enum List { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: enum is never used: `List` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_6_ref_cycle.rs:2:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 2 | enum List { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `tail` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_6_ref_cycle.rs:8:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 8 | fn tail(&self) -> Option<&RefCell>> { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: struct is never constructed: `Node` Dec 14 06:18:04.902 INFO [stderr] --> src/ch15_smart_pointers/ch15_6_ref_cycle.rs:47:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 47 | struct Node { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: struct is never constructed: `AveragedCollection` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:2:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 2 | pub struct AveragedCollection { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `add` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:8:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 8 | pub fn add(&mut self, value: i32) { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `remove` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:13:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 13 | pub fn remove(&mut self) -> Option { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `average` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:24:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 24 | pub fn average(&self) -> f64 { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `update_average` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:28:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 28 | fn update_average(&mut self) { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: struct is never constructed: `Screen` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:39:1 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 39 | pub struct Screen { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: method is never used: `run` Dec 14 06:18:04.902 INFO [stderr] --> src/ch17_oop/mod.rs:44:5 Dec 14 06:18:04.902 INFO [stderr] | Dec 14 06:18:04.902 INFO [stderr] 44 | pub fn run(&self) { Dec 14 06:18:04.902 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.902 INFO [stderr] Dec 14 06:18:04.902 INFO [stderr] warning: struct is never constructed: `Button` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:52:1 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 52 | pub struct Button { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: struct is never constructed: `SelectBox` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:65:1 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 65 | struct SelectBox { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: field is never used: `state` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:140:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 140 | state: Option>, Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `new` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:145:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 145 | pub fn new() -> Post { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `add_text` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:152:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 152 | pub fn add_text(&mut self, text: &str) { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `content` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:156:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 156 | pub fn content(&self) -> &str { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `request_review` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:160:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 160 | pub fn request_review(&mut self) { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `approve` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:166:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 166 | pub fn approve(&mut self) { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `reject` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/mod.rs:172:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 172 | pub fn reject(&mut self) { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: enum is never used: `Either` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:22:1 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 22 | enum Either { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: struct is never constructed: `Post` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:27:1 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 27 | struct Post { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: struct is never constructed: `DraftPost` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:31:1 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 31 | struct DraftPost { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `new` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:36:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 36 | fn new() -> DraftPost { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `content` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:42:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 42 | fn content(&self) -> &str { Dec 14 06:18:04.903 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.903 INFO [stderr] Dec 14 06:18:04.903 INFO [stderr] warning: method is never used: `add_text` Dec 14 06:18:04.903 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:48:5 Dec 14 06:18:04.903 INFO [stderr] | Dec 14 06:18:04.903 INFO [stderr] 48 | fn add_text(&mut self, text: &str) { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: method is never used: `request_review` Dec 14 06:18:04.904 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:52:5 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 52 | fn request_review(self) -> PendingReviewPost { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: struct is never constructed: `PendingReviewPost` Dec 14 06:18:04.904 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:60:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 60 | struct PendingReviewPost { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: method is never used: `approve` Dec 14 06:18:04.904 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:66:5 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 66 | fn approve(self) -> Either { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: method is never used: `reject` Dec 14 06:18:04.904 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:81:5 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 81 | fn reject(self) -> DraftPost { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: enum is never used: `Message` Dec 14 06:18:04.904 INFO [stderr] --> src/ch18_pattern_match.rs:236:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 236 | enum Message { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: struct is never constructed: `Point` Dec 14 06:18:04.904 INFO [stderr] --> src/ch18_pattern_match.rs:240:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 240 | struct Point { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: function is never used: `foo` Dec 14 06:18:04.904 INFO [stderr] --> src/ch18_pattern_match.rs:245:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 245 | fn foo(x: i32) { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: function is never used: `print_coordinates` Dec 14 06:18:04.904 INFO [stderr] --> src/ch18_pattern_match.rs:250:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 250 | fn print_coordinates(&(x, y): &(i32, i32)) { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: function is never used: `dangerous` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_1_unsafe.rs:28:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 28 | unsafe fn dangerous() {} Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: function is never used: `split_at_mut` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_1_unsafe.rs:44:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 44 | fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: static item is never used: `HELLO_WORLD` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_1_unsafe.rs:77:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 77 | static HELLO_WORLD: &str = "Hello, world!"; Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: static item is never used: `COUNTER` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_1_unsafe.rs:78:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 78 | static mut COUNTER: u32 = 0; Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: struct is never constructed: `Context` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:2:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 2 | struct Context<'s>(&'s str); Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: struct is never constructed: `Parser` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:4:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 4 | struct Parser<'c, 's: 'c> { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: method is never used: `parse` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:9:5 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 9 | fn parse(&self) -> Result<(), &'s str> { Dec 14 06:18:04.904 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.904 INFO [stderr] Dec 14 06:18:04.904 INFO [stderr] warning: function is never used: `parse_context` Dec 14 06:18:04.904 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:14:1 Dec 14 06:18:04.904 INFO [stderr] | Dec 14 06:18:04.904 INFO [stderr] 14 | fn parse_context(context: Context) -> Result<(), &str> { Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: struct is never constructed: `Ref` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:19:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 19 | struct Ref<'a, T: 'a>(&'a T); Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: struct is never constructed: `Bar` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:24:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 24 | struct Bar<'a> { Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `gDistance` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `aDistance` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `distance` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `traverse` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:35:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 35 | fn traverse(graph: &AGraph) {} Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: struct is never constructed: `Baz` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:102:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 102 | struct Baz; Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: method is never used: `f` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:117:5 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 117 | fn f(&self) { Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: struct is never constructed: `Wrapper` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:139:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 139 | struct Wrapper(Vec); Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: type alias is never used: `Kilometers` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:1:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 1 | type Kilometers = i32; Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: type alias is never used: `Thunk` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:2:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 2 | type Thunk = Box; Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `bar` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:9:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 9 | fn bar() -> ! { Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `generic` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:18:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 18 | fn generic(t: T){} Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `generic2` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:19:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 19 | fn generic2(t: T) {} Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `generic3` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:20:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 20 | fn generic3(t: &T) {} Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `add_one` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:1:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 1 | fn add_one(x: i32) -> i32 { x + 1 } Dec 14 06:18:04.905 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.905 INFO [stderr] Dec 14 06:18:04.905 INFO [stderr] warning: function is never used: `do_twice` Dec 14 06:18:04.905 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:3:1 Dec 14 06:18:04.905 INFO [stderr] | Dec 14 06:18:04.905 INFO [stderr] 3 | fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 { Dec 14 06:18:04.906 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.906 INFO [stderr] Dec 14 06:18:04.906 INFO [stderr] warning: function is never used: `returns_closure` Dec 14 06:18:04.906 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:25:1 Dec 14 06:18:04.906 INFO [stderr] | Dec 14 06:18:04.906 INFO [stderr] 25 | fn returns_closure() -> Box i32> { Dec 14 06:18:04.906 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.906 INFO [stderr] Dec 14 06:18:04.906 INFO [stderr] warning: function `gDistance` should have a snake case name such as `g_distance` Dec 14 06:18:04.906 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:1 Dec 14 06:18:04.906 INFO [stderr] | Dec 14 06:18:04.906 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:04.906 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:04.906 INFO [stderr] | Dec 14 06:18:04.906 INFO [stderr] = note: #[warn(non_snake_case)] on by default Dec 14 06:18:04.906 INFO [stderr] Dec 14 06:18:04.906 INFO [stderr] warning: function `aDistance` should have a snake case name such as `a_distance` Dec 14 06:18:04.906 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:1 Dec 14 06:18:04.906 INFO [stderr] | Dec 14 06:18:04.906 INFO [stderr] 28 | / fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:04.906 INFO [stderr] 29 | | 1 Dec 14 06:18:04.906 INFO [stderr] 30 | | } Dec 14 06:18:04.906 INFO [stderr] | |_^ Dec 14 06:18:04.906 INFO [stderr] Dec 14 06:18:05.065 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.77s Dec 14 06:18:05.065 INFO [stderr] su: No module specific data is present Dec 14 06:18:05.365 INFO running `"docker" "inspect" "a6e1edd18ffb51e08d104623335a4ef956a7d04fb9f7b05724304b047ac9a7e4"` Dec 14 06:18:05.446 INFO running `"docker" "rm" "-f" "a6e1edd18ffb51e08d104623335a4ef956a7d04fb9f7b05724304b047ac9a7e4"` Dec 14 06:18:05.517 INFO [stdout] a6e1edd18ffb51e08d104623335a4ef956a7d04fb9f7b05724304b047ac9a7e4 Dec 14 06:18:05.519 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Dec 14 06:18:05.707 INFO [stdout] f972b9503b8169102ed6939c54538038cab87206183db353e6df8b7f9992d063 Dec 14 06:18:05.712 INFO running `"docker" "start" "-a" "f972b9503b8169102ed6939c54538038cab87206183db353e6df8b7f9992d063"` Dec 14 06:18:06.423 INFO [stderr] usermod: no changes Dec 14 06:18:06.483 INFO [stderr] Compiling learn-rust v0.1.0 (/source) Dec 14 06:18:07.063 INFO [stderr] warning: unused import: `std::rc::Rc` Dec 14 06:18:07.063 INFO [stderr] --> src/ch16_concurrency/ch16_3_shared_state.rs:3:5 Dec 14 06:18:07.063 INFO [stderr] | Dec 14 06:18:07.063 INFO [stderr] 3 | use std::rc::Rc; Dec 14 06:18:07.063 INFO [stderr] | ^^^^^^^^^^^ Dec 14 06:18:07.063 INFO [stderr] | Dec 14 06:18:07.063 INFO [stderr] = note: #[warn(unused_imports)] on by default Dec 14 06:18:07.063 INFO [stderr] Dec 14 06:18:07.063 INFO [stderr] warning: unused import: `std::io` Dec 14 06:18:07.063 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:4:5 Dec 14 06:18:07.063 INFO [stderr] | Dec 14 06:18:07.063 INFO [stderr] 4 | use std::io; Dec 14 06:18:07.063 INFO [stderr] | ^^^^^^^ Dec 14 06:18:07.063 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `ip_type` Dec 14 06:18:07.621 INFO [stderr] --> src/ch6_enums.rs:53:10 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 53 | fn route(ip_type: IpAddrKind) {} Dec 14 06:18:07.621 INFO [stderr] | ^^^^^^^ help: consider using `_ip_type` instead Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:07.621 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:58 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:07.621 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `u` Dec 14 06:18:07.621 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:64 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:07.621 INFO [stderr] | ^ help: consider using `_u` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:07.621 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:25 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 117 | fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:07.621 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `u` Dec 14 06:18:07.621 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:31 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 117 | fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:07.621 INFO [stderr] | ^ help: consider using `_u` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `c1` Dec 14 06:18:07.621 INFO [stderr] --> src/ch14_cargo_crates.rs:37:16 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 37 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { Dec 14 06:18:07.621 INFO [stderr] | ^^ help: consider using `_c1` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `c2` Dec 14 06:18:07.621 INFO [stderr] --> src/ch14_cargo_crates.rs:37:34 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 37 | pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor { Dec 14 06:18:07.621 INFO [stderr] | ^^ help: consider using `_c2` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.621 INFO [stderr] warning: unused variable: `x` Dec 14 06:18:07.621 INFO [stderr] --> src/ch18_pattern_match.rs:245:8 Dec 14 06:18:07.621 INFO [stderr] | Dec 14 06:18:07.621 INFO [stderr] 245 | fn foo(x: i32) { Dec 14 06:18:07.621 INFO [stderr] | ^ help: consider using `_x` instead Dec 14 06:18:07.621 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:37 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:48 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:59 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:25 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:36 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:53 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:07.622 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:19 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `start` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:41 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_start` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `end` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:52 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.622 INFO [stderr] | ^^^ help: consider using `_end` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `graph` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:35:13 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 35 | fn traverse(graph: &AGraph) {} Dec 14 06:18:07.622 INFO [stderr] | ^^^^^ help: consider using `_graph` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:18:15 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 18 | fn generic(t: T){} Dec 14 06:18:07.622 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:19:23 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 19 | fn generic2(t: T) {} Dec 14 06:18:07.622 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `t` Dec 14 06:18:07.622 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:20:24 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 20 | fn generic3(t: &T) {} Dec 14 06:18:07.622 INFO [stderr] | ^ help: consider using `_t` instead Dec 14 06:18:07.622 INFO [stderr] Dec 14 06:18:07.622 INFO [stderr] warning: unused variable: `s2` Dec 14 06:18:07.622 INFO [stderr] --> src/ch4_ownership.rs:20:13 Dec 14 06:18:07.622 INFO [stderr] | Dec 14 06:18:07.622 INFO [stderr] 20 | let s2 = s1; Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_s2` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `s1` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:46:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 46 | let s1 = gives_ownership(); // gives_ownership moves its return Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_s1` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `s3` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:51:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 51 | let s3 = takes_and_gives_back(s2); // s2 is moved into Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_s3` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `r1` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:78:17 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 78 | let r1 = &mut s; Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `r2` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:82:17 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 82 | let r2 = &mut s; Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_r2` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `r1` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:86:17 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 86 | let r1 = &s; // no problem Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `r2` Dec 14 06:18:07.623 INFO [stderr] --> src/ch4_ownership.rs:87:17 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 87 | let r2 = &s; // no problem Dec 14 06:18:07.623 INFO [stderr] | ^^ help: consider using `_r2` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `user2` Dec 14 06:18:07.623 INFO [stderr] --> src/ch5_structs.rs:24:9 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 24 | let user2 = User { Dec 14 06:18:07.623 INFO [stderr] | ^^^^^ help: consider using `_user2` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `black` Dec 14 06:18:07.623 INFO [stderr] --> src/ch5_structs.rs:30:9 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 30 | let black = Color(0, 0, 0); Dec 14 06:18:07.623 INFO [stderr] | ^^^^^ help: consider using `_black` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `origin` Dec 14 06:18:07.623 INFO [stderr] --> src/ch5_structs.rs:31:9 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 31 | let origin = Point(0, 0, 0); Dec 14 06:18:07.623 INFO [stderr] | ^^^^^^ help: consider using `_origin` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `v` Dec 14 06:18:07.623 INFO [stderr] --> src/ch8_collections.rs:11:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 11 | let v: Vec = Vec::new(); Dec 14 06:18:07.623 INFO [stderr] | ^ help: consider using `_v` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `v` Dec 14 06:18:07.623 INFO [stderr] --> src/ch8_collections.rs:12:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 12 | let v = vec![1, 2, 3]; Dec 14 06:18:07.623 INFO [stderr] | ^ help: consider using `_v` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `third` Dec 14 06:18:07.623 INFO [stderr] --> src/ch8_collections.rs:25:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 25 | let third: &i32 = &v[2]; Dec 14 06:18:07.623 INFO [stderr] | ^^^^^ help: consider using `_third` instead Dec 14 06:18:07.623 INFO [stderr] Dec 14 06:18:07.623 INFO [stderr] warning: unused variable: `third` Dec 14 06:18:07.623 INFO [stderr] --> src/ch8_collections.rs:26:13 Dec 14 06:18:07.623 INFO [stderr] | Dec 14 06:18:07.623 INFO [stderr] 26 | let third: Option<&i32> = v.get(2); Dec 14 06:18:07.623 INFO [stderr] | ^^^^^ help: consider using `_third` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `first` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:33:13 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 33 | let first = &v[0]; Dec 14 06:18:07.624 INFO [stderr] | ^^^^^ help: consider using `_first` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `row` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:41:13 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 41 | let row = vec![ Dec 14 06:18:07.624 INFO [stderr] | ^^^ help: consider using `_row` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `s` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:52:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 52 | let s = String::from("initial contents"); Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_s` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `s` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:53:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 53 | let s = "initial contents".to_string(); Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_s` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `s3` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:67:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 67 | let s3 = s1 + &s2; // Note that s1 has been moved here and can no longer be used Dec 14 06:18:07.624 INFO [stderr] | ^^ help: consider using `_s3` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `s` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:73:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 73 | let s = format!("{}-{}-{}", s1, s2, s3); Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_s` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `s` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:76:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 76 | let s = &hello[0..4]; Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_s` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `score` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:100:17 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 100 | let score = scores.get(&team_name); Dec 14 06:18:07.624 INFO [stderr] | ^^^^^ help: consider using `_score` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `scores` Dec 14 06:18:07.624 INFO [stderr] --> src/ch8_collections.rs:115:13 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 115 | let scores: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect(); Dec 14 06:18:07.624 INFO [stderr] | ^^^^^^ help: consider using `_scores` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `i` Dec 14 06:18:07.624 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:67:13 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 67 | let i = ImportantExcerpt { part: first_sentence }; Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_i` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `v1` Dec 14 06:18:07.624 INFO [stderr] --> src/ch13_fp.rs:168:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 168 | let v1 = c.value(1); Dec 14 06:18:07.624 INFO [stderr] | ^^ help: consider using `_v1` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `list` Dec 14 06:18:07.624 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:18:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 18 | let list = Cons(1, Dec 14 06:18:07.624 INFO [stderr] | ^^^^ help: consider using `_list` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `audio` Dec 14 06:18:07.624 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:66:21 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 66 | fn compress_mp3(audio: &[u8]) -> Vec { vec![1, 3] } Dec 14 06:18:07.624 INFO [stderr] | ^^^^^ help: consider using `_audio` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `c` Dec 14 06:18:07.624 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:84:9 Dec 14 06:18:07.624 INFO [stderr] | Dec 14 06:18:07.624 INFO [stderr] 84 | let c = CustomSmartPointer { data: String::from("some data") }; Dec 14 06:18:07.624 INFO [stderr] | ^ help: consider using `_c` instead Dec 14 06:18:07.624 INFO [stderr] Dec 14 06:18:07.624 INFO [stderr] warning: unused variable: `b` Dec 14 06:18:07.625 INFO [stderr] --> src/ch15_smart_pointers/ch15_4_rc.rs:20:9 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 20 | let b = Cons(3, a.clone()); Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_b` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `c` Dec 14 06:18:07.625 INFO [stderr] --> src/ch15_smart_pointers/ch15_4_rc.rs:24:13 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 24 | let c = Cons(4, a.clone()); Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_c` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `r1` Dec 14 06:18:07.625 INFO [stderr] --> src/ch15_smart_pointers/ch15_5_ref_cell.rs:30:13 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 30 | let r1 = s.borrow_mut(); Dec 14 06:18:07.625 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `x` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:52:13 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 52 | let x = 5;//let PATTERN = EXPRESSION; Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_x` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `x` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:53:14 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 53 | let (x, y, z) = (1, 2, 3); Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_x` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `y` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:53:17 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 53 | let (x, y, z) = (1, 2, 3); Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_y` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `z` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:53:20 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 53 | let (x, y, z) = (1, 2, 3); Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_z` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `sum_of_squares` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:141:17 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 141 | let sum_of_squares: i32 = points Dec 14 06:18:07.625 INFO [stderr] | ^^^^^^^^^^^^^^ help: consider using `_sum_of_squares` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `feet` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:146:19 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 146 | let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 }); Dec 14 06:18:07.625 INFO [stderr] | ^^^^ help: consider using `_feet` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `inches` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:146:25 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 146 | let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 }); Dec 14 06:18:07.625 INFO [stderr] | ^^^^^^ help: consider using `_inches` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `x` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:146:41 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 146 | let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 }); Dec 14 06:18:07.625 INFO [stderr] | ^ help: try ignoring the field: `x: _` Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `y` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:146:44 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 146 | let ((feet, inches), Point {x, y}) = ((3, 10), Point { x: 3, y: -10 }); Dec 14 06:18:07.625 INFO [stderr] | ^ help: try ignoring the field: `y: _` Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `y` Dec 14 06:18:07.625 INFO [stderr] --> src/ch18_pattern_match.rs:160:17 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 160 | let y = 10; Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_y` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `r` Dec 14 06:18:07.625 INFO [stderr] --> src/ch19_advanced_feature/ch19_1_unsafe.rs:13:9 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 13 | let r = address as *const i32; Dec 14 06:18:07.625 INFO [stderr] | ^ help: consider using `_r` instead Dec 14 06:18:07.625 INFO [stderr] Dec 14 06:18:07.625 INFO [stderr] warning: unused variable: `obj` Dec 14 06:18:07.625 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:37:9 Dec 14 06:18:07.625 INFO [stderr] | Dec 14 06:18:07.625 INFO [stderr] 37 | let obj = Box::new(Bar { x: &num }) as Box; Dec 14 06:18:07.626 INFO [stderr] | ^^^ help: consider using `_obj` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: unused variable: `list_of_strings` Dec 14 06:18:07.626 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:13:9 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 13 | let list_of_strings: Vec = list_of_numbers Dec 14 06:18:07.626 INFO [stderr] | ^^^^^^^^^^^^^^^ help: consider using `_list_of_strings` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: unused variable: `list_of_strings` Dec 14 06:18:07.626 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:18:9 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 18 | let list_of_strings: Vec = list_of_numbers Dec 14 06:18:07.626 INFO [stderr] | ^^^^^^^^^^^^^^^ help: consider using `_list_of_strings` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: unused variable: `post` Dec 14 06:18:07.626 INFO [stderr] --> src/ch17_oop/mod.rs:184:27 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 184 | fn content<'a>(&self, post: &'a Post) -> &'a str { Dec 14 06:18:07.626 INFO [stderr] | ^^^^ help: consider using `_post` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: unused variable: `content` Dec 14 06:18:07.626 INFO [stderr] --> src/ch17_oop/mod.rs:188:24 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 188 | fn add_text(&self, content: &mut String, text: &str) {} Dec 14 06:18:07.626 INFO [stderr] | ^^^^^^^ help: consider using `_content` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: unused variable: `text` Dec 14 06:18:07.626 INFO [stderr] --> src/ch17_oop/mod.rs:188:46 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 188 | fn add_text(&self, content: &mut String, text: &str) {} Dec 14 06:18:07.626 INFO [stderr] | ^^^^ help: consider using `_text` instead Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.626 INFO [stderr] warning: variable does not need to be mutable Dec 14 06:18:07.626 INFO [stderr] --> src/ch8_collections.rs:31:13 Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] 31 | let mut v = vec![1, 2, 3, 4, 5]; Dec 14 06:18:07.626 INFO [stderr] | ----^ Dec 14 06:18:07.626 INFO [stderr] | | Dec 14 06:18:07.626 INFO [stderr] | help: remove this `mut` Dec 14 06:18:07.626 INFO [stderr] | Dec 14 06:18:07.626 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 14 06:18:07.626 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: function is never used: `makes_copy` Dec 14 06:18:07.792 INFO [stderr] --> src/ch4_ownership.rs:111:1 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 111 | fn makes_copy(some_integer: i32) { Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] = note: #[warn(dead_code)] on by default Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: field is never used: `username` Dec 14 06:18:07.792 INFO [stderr] --> src/ch5_structs.rs:2:5 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 2 | username: String, Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: field is never used: `sign_in_count` Dec 14 06:18:07.792 INFO [stderr] --> src/ch5_structs.rs:4:5 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 4 | sign_in_count: u64, Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: field is never used: `active` Dec 14 06:18:07.792 INFO [stderr] --> src/ch5_structs.rs:5:5 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 5 | active: bool, Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: function is never used: `build_user` Dec 14 06:18:07.792 INFO [stderr] --> src/ch5_structs.rs:34:1 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 34 | fn build_user(email: String, username: String) -> User { Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: enum is never used: `UsState` Dec 14 06:18:07.792 INFO [stderr] --> src/ch6_enums.rs:7:1 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 7 | enum UsState { Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: enum is never used: `Coin` Dec 14 06:18:07.792 INFO [stderr] --> src/ch6_enums.rs:13:1 Dec 14 06:18:07.792 INFO [stderr] | Dec 14 06:18:07.792 INFO [stderr] 13 | enum Coin { Dec 14 06:18:07.792 INFO [stderr] | ^^^^^^^^^ Dec 14 06:18:07.792 INFO [stderr] Dec 14 06:18:07.792 INFO [stderr] warning: function is never used: `value_in_cents` Dec 14 06:18:07.793 INFO [stderr] --> src/ch6_enums.rs:20:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 20 | fn value_in_cents(coin: Coin) -> u32 { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `nested_modules` Dec 14 06:18:07.793 INFO [stderr] --> src/ch7_modules.rs:21:13 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 21 | pub fn nested_modules() {} Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `read_username_from_file` Dec 14 06:18:07.793 INFO [stderr] --> src/ch9_error.rs:44:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 44 | fn read_username_from_file() -> Result { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `read_username_from_file2` Dec 14 06:18:07.793 INFO [stderr] --> src/ch9_error.rs:60:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 60 | fn read_username_from_file2() -> Result { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `read_username_from_file3` Dec 14 06:18:07.793 INFO [stderr] --> src/ch9_error.rs:67:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 67 | fn read_username_from_file3() -> Result { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `longest_with_an_announcement` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:83:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 83 | / fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str Dec 14 06:18:07.793 INFO [stderr] 84 | | where T: Display Dec 14 06:18:07.793 INFO [stderr] 85 | | { Dec 14 06:18:07.793 INFO [stderr] 86 | | println!("Announcement! {}", ann); Dec 14 06:18:07.793 INFO [stderr] ... | Dec 14 06:18:07.793 INFO [stderr] 91 | | } Dec 14 06:18:07.793 INFO [stderr] 92 | | } Dec 14 06:18:07.793 INFO [stderr] | |_^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: field is never used: `part` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:95:5 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 95 | part: &'a str, Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: method is never used: `level` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:99:5 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 99 | fn level(&self) -> i32 { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: method is never used: `announce_and_return_part` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:103:5 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 103 | fn announce_and_return_part(&self, announcement: &str) -> &str { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `notify` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:109:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 109 | fn notify(item: T) { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `some_function` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:113:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 113 | fn some_function(t: T, u: U) -> i32 { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: function is never used: `some_function2` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:117:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 117 | / fn some_function2(t: T, u: U) -> i32 Dec 14 06:18:07.793 INFO [stderr] 118 | | where T: Display + Clone, Dec 14 06:18:07.793 INFO [stderr] 119 | | U: Clone + Display { Dec 14 06:18:07.793 INFO [stderr] 120 | | 1 Dec 14 06:18:07.793 INFO [stderr] 121 | | } Dec 14 06:18:07.793 INFO [stderr] | |_^ Dec 14 06:18:07.793 INFO [stderr] Dec 14 06:18:07.793 INFO [stderr] warning: struct is never constructed: `Point` Dec 14 06:18:07.793 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:147:1 Dec 14 06:18:07.793 INFO [stderr] | Dec 14 06:18:07.793 INFO [stderr] 147 | struct Point { Dec 14 06:18:07.793 INFO [stderr] | ^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `x` Dec 14 06:18:07.794 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:153:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 153 | fn x(&self) -> &T { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: struct is never constructed: `Point2` Dec 14 06:18:07.794 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:158:1 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 158 | struct Point2 { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `mixup` Dec 14 06:18:07.794 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:164:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 164 | fn mixup(self, other: Point2) -> Point2 { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: enum is never used: `Option` Dec 14 06:18:07.794 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:172:1 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 172 | enum Option { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: struct is never constructed: `NewsArticle` Dec 14 06:18:07.794 INFO [stderr] --> src/ch10_generic_trait_lifetime.rs:185:1 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 185 | struct NewsArticle { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: field is never used: `value` Dec 14 06:18:07.794 INFO [stderr] --> src/ch11_test.rs:25:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 25 | value: u32, Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: field is never used: `artist` Dec 14 06:18:07.794 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:26:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 26 | artist: Option, Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: field is never used: `title` Dec 14 06:18:07.794 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:27:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 27 | title: Option, Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: field is never used: `data` Dec 14 06:18:07.794 INFO [stderr] --> src/ch15_smart_pointers/ch15_1_box.rs:73:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 73 | data: String, Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: struct is never constructed: `AveragedCollection` Dec 14 06:18:07.794 INFO [stderr] --> src/ch17_oop/mod.rs:2:1 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 2 | pub struct AveragedCollection { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `add` Dec 14 06:18:07.794 INFO [stderr] --> src/ch17_oop/mod.rs:8:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 8 | pub fn add(&mut self, value: i32) { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `remove` Dec 14 06:18:07.794 INFO [stderr] --> src/ch17_oop/mod.rs:13:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 13 | pub fn remove(&mut self) -> Option { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `average` Dec 14 06:18:07.794 INFO [stderr] --> src/ch17_oop/mod.rs:24:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 24 | pub fn average(&self) -> f64 { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.794 INFO [stderr] warning: method is never used: `update_average` Dec 14 06:18:07.794 INFO [stderr] --> src/ch17_oop/mod.rs:28:5 Dec 14 06:18:07.794 INFO [stderr] | Dec 14 06:18:07.794 INFO [stderr] 28 | fn update_average(&mut self) { Dec 14 06:18:07.794 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.794 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: method is never used: `reject` Dec 14 06:18:07.795 INFO [stderr] --> src/ch17_oop/encoding_states_as_type.rs:81:5 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 81 | fn reject(self) -> DraftPost { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `foo` Dec 14 06:18:07.795 INFO [stderr] --> src/ch18_pattern_match.rs:245:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 245 | fn foo(x: i32) { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: struct is never constructed: `Context` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:2:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 2 | struct Context<'s>(&'s str); Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: struct is never constructed: `Parser` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:4:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 4 | struct Parser<'c, 's: 'c> { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: method is never used: `parse` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:9:5 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 9 | fn parse(&self) -> Result<(), &'s str> { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `parse_context` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:14:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 14 | fn parse_context(context: Context) -> Result<(), &str> { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: struct is never constructed: `Ref` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:19:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 19 | struct Ref<'a, T: 'a>(&'a T); Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: field is never used: `x` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_2_advanced_lifetime.rs:25:5 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 25 | x: &'a i32, Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `gDistance` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `aDistance` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 28 | fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `distance` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:33:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 33 | fn distance(graph: &GGraph, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: function is never used: `traverse` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:35:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 35 | fn traverse(graph: &AGraph) {} Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: struct is never constructed: `Wrapper` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:139:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 139 | struct Wrapper(Vec); Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: type alias is never used: `Kilometers` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:1:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 1 | type Kilometers = i32; Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.795 INFO [stderr] Dec 14 06:18:07.795 INFO [stderr] warning: type alias is never used: `Thunk` Dec 14 06:18:07.795 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:2:1 Dec 14 06:18:07.795 INFO [stderr] | Dec 14 06:18:07.795 INFO [stderr] 2 | type Thunk = Box; Dec 14 06:18:07.795 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.796 INFO [stderr] warning: function is never used: `bar` Dec 14 06:18:07.796 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:9:1 Dec 14 06:18:07.796 INFO [stderr] | Dec 14 06:18:07.796 INFO [stderr] 9 | fn bar() -> ! { Dec 14 06:18:07.796 INFO [stderr] | ^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.796 INFO [stderr] warning: function is never used: `generic` Dec 14 06:18:07.796 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:18:1 Dec 14 06:18:07.796 INFO [stderr] | Dec 14 06:18:07.796 INFO [stderr] 18 | fn generic(t: T){} Dec 14 06:18:07.796 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.796 INFO [stderr] warning: function is never used: `generic2` Dec 14 06:18:07.796 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:19:1 Dec 14 06:18:07.796 INFO [stderr] | Dec 14 06:18:07.796 INFO [stderr] 19 | fn generic2(t: T) {} Dec 14 06:18:07.796 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.796 INFO [stderr] warning: function is never used: `generic3` Dec 14 06:18:07.796 INFO [stderr] --> src/ch19_advanced_feature/ch19_4_advanced_types.rs:20:1 Dec 14 06:18:07.796 INFO [stderr] | Dec 14 06:18:07.796 INFO [stderr] 20 | fn generic3(t: &T) {} Dec 14 06:18:07.796 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.796 INFO [stderr] warning: function is never used: `returns_closure` Dec 14 06:18:07.796 INFO [stderr] --> src/ch19_advanced_feature/ch19_5_advanced_func_closures.rs:25:1 Dec 14 06:18:07.796 INFO [stderr] | Dec 14 06:18:07.796 INFO [stderr] 25 | fn returns_closure() -> Box i32> { Dec 14 06:18:07.796 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.796 INFO [stderr] Dec 14 06:18:07.805 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 14 06:18:07.805 INFO [stderr] --> src/ch16_concurrency/ch16_1_threads.rs:15:5 Dec 14 06:18:07.805 INFO [stderr] | Dec 14 06:18:07.805 INFO [stderr] 15 | handle.join(); Dec 14 06:18:07.805 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:07.805 INFO [stderr] | Dec 14 06:18:07.805 INFO [stderr] = note: #[warn(unused_must_use)] on by default Dec 14 06:18:07.805 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 14 06:18:07.805 INFO [stderr] Dec 14 06:18:07.806 INFO [stderr] warning: unused `std::result::Result` that must be used Dec 14 06:18:07.806 INFO [stderr] --> src/ch16_concurrency/ch16_1_threads.rs:25:5 Dec 14 06:18:07.806 INFO [stderr] | Dec 14 06:18:07.806 INFO [stderr] 25 | handle.join(); Dec 14 06:18:07.806 INFO [stderr] | ^^^^^^^^^^^^^^ Dec 14 06:18:07.806 INFO [stderr] | Dec 14 06:18:07.806 INFO [stderr] = note: this `Result` may be an `Err` variant, which should be handled Dec 14 06:18:07.806 INFO [stderr] Dec 14 06:18:07.860 INFO [stderr] warning: function `gDistance` should have a snake case name such as `g_distance` Dec 14 06:18:07.860 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:19:1 Dec 14 06:18:07.860 INFO [stderr] | Dec 14 06:18:07.860 INFO [stderr] 19 | fn gDistance>(graph: &G, start: &N, end: &N) -> u32 { 1 } Dec 14 06:18:07.860 INFO [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Dec 14 06:18:07.860 INFO [stderr] | Dec 14 06:18:07.860 INFO [stderr] = note: #[warn(non_snake_case)] on by default Dec 14 06:18:07.860 INFO [stderr] Dec 14 06:18:07.860 INFO [stderr] warning: function `aDistance` should have a snake case name such as `a_distance` Dec 14 06:18:07.860 INFO [stderr] --> src/ch19_advanced_feature/ch19_3_advanced_traits.rs:28:1 Dec 14 06:18:07.860 INFO [stderr] | Dec 14 06:18:07.860 INFO [stderr] 28 | / fn aDistance(graph: &G, start: &G::Node, end: &G::Node) -> u32 { Dec 14 06:18:07.860 INFO [stderr] 29 | | 1 Dec 14 06:18:07.860 INFO [stderr] 30 | | } Dec 14 06:18:07.860 INFO [stderr] | |_^ Dec 14 06:18:07.860 INFO [stderr] Dec 14 06:18:09.499 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.03s Dec 14 06:18:09.499 INFO [stderr] su: No module specific data is present Dec 14 06:18:09.876 INFO running `"docker" "inspect" "f972b9503b8169102ed6939c54538038cab87206183db353e6df8b7f9992d063"` Dec 14 06:18:09.990 INFO running `"docker" "rm" "-f" "f972b9503b8169102ed6939c54538038cab87206183db353e6df8b7f9992d063"` Dec 14 06:18:10.082 INFO [stdout] f972b9503b8169102ed6939c54538038cab87206183db353e6df8b7f9992d063 Dec 14 06:18:10.087 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"` Dec 14 06:18:10.413 INFO [stdout] b92f3a6da87eb90a95d35bdead4a1a7749a0b97251f8b438620f9090f1f025f2 Dec 14 06:18:10.415 INFO running `"docker" "start" "-a" "b92f3a6da87eb90a95d35bdead4a1a7749a0b97251f8b438620f9090f1f025f2"` Dec 14 06:18:10.861 INFO [stderr] usermod: no changes Dec 14 06:18:10.889 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s Dec 14 06:18:10.893 INFO [stderr] Running /target/debug/deps/learn_rust-a7e90f0c1930b2ad Dec 14 06:18:10.896 INFO [stdout] Dec 14 06:18:10.896 INFO [stdout] running 49 tests Dec 14 06:18:10.896 INFO [stdout] test ch10_generic_trait_lifetime::trait_test ... ok Dec 14 06:18:10.896 INFO [stdout] test ch13_fp::iterators_test ... ok Dec 14 06:18:10.896 INFO [stdout] test ch11_test::larger_can_hold_smaller ... ok Dec 14 06:18:10.896 INFO [stdout] test ch13_fp::call_with_different_values ... ok Dec 14 06:18:10.896 INFO [stdout] test ch14_cargo_crates::test_normal_use ... ok Dec 14 06:18:10.896 INFO [stdout] test ch14_cargo_crates::test_pub_use ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_1_box::test_box ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_1_box::test_cons ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_1_box::test_drop ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_1_box::test_deref ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_4_rc::test_rc ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_5_ref_cell::test_refcell ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_6_ref_cycle::test_circle_ref ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_6_ref_cycle::test_weak ... ok Dec 14 06:18:10.897 INFO [stdout] test ch15_smart_pointers::ch15_5_ref_cell::test_rc_refcell ... ok Dec 14 06:18:10.897 INFO [stdout] Here's a vector: [1, 2, 3] Dec 14 06:18:10.897 INFO [stdout] hi number 1 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 2 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 3 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 4 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 5 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 6 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 7 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 8 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] hi number 9 from the spawned thread! Dec 14 06:18:10.897 INFO [stdout] test ch16_concurrency::ch16_1_threads::test_move_closures ... ok Dec 14 06:18:10.898 INFO [stdout] test ch16_concurrency::ch16_3_shared_state::test_mutex ... ok Dec 14 06:18:10.898 INFO [stdout] test ch16_concurrency::ch16_1_threads::test_thread ... ok Dec 14 06:18:10.898 INFO [stdout] test ch16_concurrency::ch16_3_shared_state::test_mutex_api ... ok Dec 14 06:18:10.898 INFO [stdout] test ch16_concurrency::ch16_3_shared_state::test_mutex_rc ... ok Dec 14 06:18:10.898 INFO [stdout] test ch17_oop::encoding_states_as_type::test_main ... ok Dec 14 06:18:10.903 INFO [stdout] test ch10_generic_trait_lifetime::generic_test ... ok Dec 14 06:18:10.903 INFO [stdout] test ch10_generic_trait_lifetime::lifetime_test ... ok Dec 14 06:18:10.903 INFO [stdout] test ch11_test::it_adds_two ... ok Dec 14 06:18:10.905 INFO [stdout] test ch19_advanced_feature::ch19_1_unsafe::create_safe_abstraction ... ok Dec 14 06:18:10.905 INFO [stdout] test ch19_advanced_feature::ch19_1_unsafe::test_raw_pointer ... ok Dec 14 06:18:10.905 INFO [stdout] test ch16_concurrency::ch16_3_shared_state::test_mutex_arc ... ok Dec 14 06:18:10.905 INFO [stdout] test ch19_advanced_feature::ch19_1_unsafe::test_static_var ... ok Dec 14 06:18:10.915 INFO [stdout] test ch19_advanced_feature::ch19_1_unsafe::test_unsafe_func ... ok Dec 14 06:18:10.915 INFO [stdout] test ch17_oop::test_rust_gui ... ok Dec 14 06:18:10.915 INFO [stdout] test ch17_oop::test_state_pattern ... ok Dec 14 06:18:10.915 INFO [stdout] test ch19_advanced_feature::ch19_2_advanced_lifetime::trait_object_lifetime ... ok Dec 14 06:18:10.915 INFO [stdout] test ch18_pattern_match::places_patterns_may_use ... ok Dec 14 06:18:10.915 INFO [stdout] test ch19_advanced_feature::ch19_3_advanced_traits::fully_qualified_syntax ... ok Dec 14 06:18:10.915 INFO [stdout] test ch19_advanced_feature::ch19_5_advanced_func_closures::func_pointer ... ok Dec 14 06:18:10.915 INFO [stdout] test ch5_rectangle::main ... ok Dec 14 06:18:10.915 INFO [stdout] test ch5_structs::main ... ok Dec 14 06:18:10.915 INFO [stdout] test ch4_ownership::main ... ok Dec 14 06:18:10.915 INFO [stdout] test ch6_enums::main ... ok Dec 14 06:18:10.915 INFO [stdout] test ch8_collections::string ... ok Dec 14 06:18:10.915 INFO [stdout] test ch9_error::result ... ok Dec 14 06:18:10.915 INFO [stdout] test ch8_collections::hash_maps ... ok Dec 14 06:18:10.915 INFO [stdout] test tests::internal ... ok Dec 14 06:18:10.915 INFO [stdout] test ch8_collections::vector ... ok Dec 14 06:18:10.915 INFO [stdout] test ch19_advanced_feature::ch19_3_advanced_traits::operator_overloading ... ok Dec 14 06:18:10.955 INFO [stdout] test ch11_test::greater_than_100 ... ok Dec 14 06:18:10.960 INFO [stdout] test ch9_error::panic ... ok Dec 14 06:18:12.898 INFO [stdout] test ch13_fp::closure_test ... ok Dec 14 06:18:14.899 INFO [stdout] test ch16_concurrency::ch16_2_message_passing::test_channel ... ok Dec 14 06:18:14.899 INFO [stdout] Dec 14 06:18:14.899 INFO [stdout] test result: ok. 49 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 14 06:18:14.899 INFO [stdout] Dec 14 06:18:14.900 INFO [stderr] Running /target/debug/deps/integration_test-6efb4d658c6bd9bd Dec 14 06:18:14.902 INFO [stdout] Dec 14 06:18:14.902 INFO [stdout] running 1 test Dec 14 06:18:14.902 INFO [stdout] test it_adds_two ... ok Dec 14 06:18:14.902 INFO [stdout] Dec 14 06:18:14.902 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 14 06:18:14.902 INFO [stdout] Dec 14 06:18:14.903 INFO [stderr] Doc-tests learn-rust Dec 14 06:18:15.451 INFO [stdout] Dec 14 06:18:15.452 INFO [stdout] running 1 test Dec 14 06:18:16.267 INFO [stdout] test src/ch14_cargo_crates.rs - ch14_cargo_crates::add_one (line 5) ... ok Dec 14 06:18:16.267 INFO [stderr] su: No module specific data is present Dec 14 06:18:16.267 INFO [stdout] Dec 14 06:18:16.267 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 14 06:18:16.267 INFO [stdout] Dec 14 06:18:16.699 INFO running `"docker" "inspect" "b92f3a6da87eb90a95d35bdead4a1a7749a0b97251f8b438620f9090f1f025f2"` Dec 14 06:18:16.992 INFO running `"docker" "rm" "-f" "b92f3a6da87eb90a95d35bdead4a1a7749a0b97251f8b438620f9090f1f025f2"` Dec 14 06:18:17.227 INFO [stdout] b92f3a6da87eb90a95d35bdead4a1a7749a0b97251f8b438620f9090f1f025f2