[INFO] cloning repository https://github.com/szymonnogiec/rust_test [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/szymonnogiec/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszymonnogiec%2Frust_test", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszymonnogiec%2Frust_test'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b339bce32edc6e9a50635c485daada852e6a866d [INFO] building szymonnogiec/rust_test against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszymonnogiec%2Frust_test" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/szymonnogiec/rust_test on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/szymonnogiec/rust_test [INFO] finished tweaking git repo https://github.com/szymonnogiec/rust_test [INFO] tweaked toml for git repo https://github.com/szymonnogiec/rust_test written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/szymonnogiec/rust_test already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 160969730b54d3711c7deac90d2f89153418c36449d1f71f8a9bd2543e6b62f0 [INFO] running `Command { std: "docker" "start" "-a" "160969730b54d3711c7deac90d2f89153418c36449d1f71f8a9bd2543e6b62f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "160969730b54d3711c7deac90d2f89153418c36449d1f71f8a9bd2543e6b62f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "160969730b54d3711c7deac90d2f89153418c36449d1f71f8a9bd2543e6b62f0", kill_on_drop: false }` [INFO] [stdout] 160969730b54d3711c7deac90d2f89153418c36449d1f71f8a9bd2543e6b62f0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ced8fc6cb5ed8ce59259688ff2ad1be6ecebd9c1ef44ced2f6f2f9171708457d [INFO] running `Command { std: "docker" "start" "-a" "ced8fc6cb5ed8ce59259688ff2ad1be6ecebd9c1ef44ced2f6f2f9171708457d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.97 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling rust_test v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/lib.rs:82:31 [INFO] [stdout] | [INFO] [stdout] 82 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Ordering` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::cmp::Ordering; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::Infallible` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::convert::Infallible; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::Iter` [INFO] [stdout] --> src/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::path::Iter; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process::exit` [INFO] [stdout] --> src/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use std::process::exit; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/main.rs:214:15 [INFO] [stdout] | [INFO] [stdout] 214 | let avg = (sum as f64 / v_len as f64); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 214 - let avg = (sum as f64 / v_len as f64); [INFO] [stdout] 214 + let avg = sum as f64 / v_len as f64; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Display`, `Formatter`, and `write` [INFO] [stdout] --> src/main.rs:552:16 [INFO] [stdout] | [INFO] [stdout] 552 | use std::fmt::{write, Display, Formatter}; [INFO] [stdout] | ^^^^^ ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `MutexGuard` and `Mutex` [INFO] [stdout] --> src/main.rs:554:17 [INFO] [stdout] | [INFO] [stdout] 554 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:828:10 [INFO] [stdout] | [INFO] [stdout] 828 | 1...5 => println!("in 1-5 range"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:833:12 [INFO] [stdout] | [INFO] [stdout] 833 | 'a'...'j' => println!("early ASCII letter"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:834:12 [INFO] [stdout] | [INFO] [stdout] 834 | 'k'...'z' => println!("late ASCII letter"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:952:32 [INFO] [stdout] | [INFO] [stdout] 952 | id: id_variable @ 3...7, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:956:28 [INFO] [stdout] | [INFO] [stdout] 956 | Msg::Hello { id: 10...12 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/main.rs:1049:17 [INFO] [stdout] | [INFO] [stdout] 1049 | trait Red {}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/main.rs:1175:35 [INFO] [stdout] | [INFO] [stdout] 1175 | impl OutlinePrint for Point {}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/main.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | let six = plus_one(five); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `none` [INFO] [stdout] --> src/main.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | let none = plus_one(None); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_none` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:138:9 [INFO] [stdout] | [INFO] [stdout] 138 | let x = &v[1]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v2` [INFO] [stdout] --> src/main.rs:144:9 [INFO] [stdout] | [INFO] [stdout] 144 | let v2 = vec!["b", "v"]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let first = &vector[0]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:141:9 [INFO] [stdout] | [INFO] [stdout] 141 | let mut e = &mut v[1]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `scores2` [INFO] [stdout] --> src/main.rs:192:13 [INFO] [stdout] | [INFO] [stdout] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:191:9 [INFO] [stdout] | [INFO] [stdout] 191 | let mut init_scores = vec![10, 50]; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:192:9 [INFO] [stdout] | [INFO] [stdout] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:238:9 [INFO] [stdout] | [INFO] [stdout] 238 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/main.rs:272:9 [INFO] [stdout] | [INFO] [stdout] 272 | let home: IPStd = "127.0.0.1".parse().unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:274:9 [INFO] [stdout] | [INFO] [stdout] 274 | let f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `integer` [INFO] [stdout] --> src/main.rs:306:9 [INFO] [stdout] | [INFO] [stdout] 306 | let integer = Point { x: 5, y: 10 }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `float` [INFO] [stdout] --> src/main.rs:307:9 [INFO] [stdout] | [INFO] [stdout] 307 | let float = Point { x: 1.0, y: 2.0 }; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:398:9 [INFO] [stdout] | [INFO] [stdout] 398 | let s: &'static str = "I have a static lifetime"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:413:9 [INFO] [stdout] | [INFO] [stdout] 413 | let i = ImportantExcept { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/main.rs:467:49 [INFO] [stdout] | [INFO] [stdout] 467 | let mut expensive_result = Cacher::new(|num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:498:9 [INFO] [stdout] | [INFO] [stdout] 498 | let sum: u32 = v1.iter().sum(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `blablator` [INFO] [stdout] --> src/main.rs:500:9 [INFO] [stdout] | [INFO] [stdout] 500 | let blablator: Vec = v1.iter().map(|x| x + 1).collect(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blablator` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:501:9 [INFO] [stdout] | [INFO] [stdout] 501 | let sum: u32 = v1.iter().sum(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:494:9 [INFO] [stdout] | [INFO] [stdout] 494 | let mut v1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:786:10 [INFO] [stdout] | [INFO] [stdout] 786 | let (a, b, _) = (1, 2, 3); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:786:13 [INFO] [stdout] | [INFO] [stdout] 786 | let (a, b, _) = (1, 2, 3); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:787:10 [INFO] [stdout] | [INFO] [stdout] 787 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:787:13 [INFO] [stdout] | [INFO] [stdout] 787 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `feet` [INFO] [stdout] --> src/main.rs:887:11 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_feet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `inches` [INFO] [stdout] --> src/main.rs:887:17 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:887:34 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:887:37 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `setting_value` is never read [INFO] [stdout] --> src/main.rs:897:13 [INFO] [stdout] | [INFO] [stdout] 897 | setting_value = new_setting_value; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:981:9 [INFO] [stdout] | [INFO] [stdout] 981 | let r = address as *const i32; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `obj` [INFO] [stdout] --> src/main.rs:1057:9 [INFO] [stdout] | [INFO] [stdout] 1057 | let obj = Box::new(Ball { diameter: &num }) as Box; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_obj` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:1205:9 [INFO] [stdout] | [INFO] [stdout] 1205 | let f: Thunk = Box::new(|| println!("Hi")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:1206:24 [INFO] [stdout] | [INFO] [stdout] 1206 | fn takes_long_type(f: Thunk) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1226:19 [INFO] [stdout] | [INFO] [stdout] 1226 | fn generic(t: T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1228:27 [INFO] [stdout] | [INFO] [stdout] 1228 | fn generic2(t: T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1234:28 [INFO] [stdout] | [INFO] [stdout] 1234 | fn generic3(t: &T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_strings` [INFO] [stdout] --> src/main.rs:1248:9 [INFO] [stdout] | [INFO] [stdout] 1248 | let list_of_strings: Vec = list_of_numbers.iter().map(|i| i.to_string()).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_strings` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_strings2` [INFO] [stdout] --> src/main.rs:1249:9 [INFO] [stdout] | [INFO] [stdout] 1249 | let list_of_strings2: Vec = list_of_numbers.iter().map(ToString::to_string).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_strings2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/main.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `area`, `height`, `double_height`, `can_hold`, `name`, and `square` are never used [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 31 | impl Rectangle { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 32 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | fn height(&self) -> u32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 38 | fn double_height(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 44 | fn name() -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `rectangle_test` is never used [INFO] [stdout] --> src/main.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn rectangle_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IpAddrKind` is never used [INFO] [stdout] --> src/main.rs:84:6 [INFO] [stdout] | [INFO] [stdout] 84 | enum IpAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IpAddr` is never constructed [INFO] [stdout] --> src/main.rs:90:8 [INFO] [stdout] | [INFO] [stdout] 90 | struct IpAddr { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IP` is never used [INFO] [stdout] --> src/main.rs:96:6 [INFO] [stdout] | [INFO] [stdout] 96 | enum IP { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ip_test` is never used [INFO] [stdout] --> src/main.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn ip_test() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `opt_test` is never used [INFO] [stdout] --> src/main.rs:116:4 [INFO] [stdout] | [INFO] [stdout] 116 | fn opt_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_test` is never used [INFO] [stdout] --> src/main.rs:133:4 [INFO] [stdout] | [INFO] [stdout] 133 | fn vec_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `str_test` is never used [INFO] [stdout] --> src/main.rs:168:4 [INFO] [stdout] | [INFO] [stdout] 168 | fn str_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `chars_test` is never used [INFO] [stdout] --> src/main.rs:177:4 [INFO] [stdout] | [INFO] [stdout] 177 | fn chars_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hashmap_test` is never used [INFO] [stdout] --> src/main.rs:184:4 [INFO] [stdout] | [INFO] [stdout] 184 | fn hashmap_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex1` is never used [INFO] [stdout] --> src/main.rs:207:4 [INFO] [stdout] | [INFO] [stdout] 207 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `panic` is never used [INFO] [stdout] --> src/main.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn panic() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `open_file` is never used [INFO] [stdout] --> src/main.rs:235:4 [INFO] [stdout] | [INFO] [stdout] 235 | fn open_file() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file` is never used [INFO] [stdout] --> src/main.rs:258:4 [INFO] [stdout] | [INFO] [stdout] 258 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_with_question` is never used [INFO] [stdout] --> src/main.rs:271:4 [INFO] [stdout] | [INFO] [stdout] 271 | fn read_username_from_file_with_question() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest` is never used [INFO] [stdout] --> src/main.rs:279:4 [INFO] [stdout] | [INFO] [stdout] 279 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `struct_template` is never used [INFO] [stdout] --> src/main.rs:290:4 [INFO] [stdout] | [INFO] [stdout] 290 | fn struct_template() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `x` is never used [INFO] [stdout] --> src/main.rs:296:12 [INFO] [stdout] | [INFO] [stdout] 295 | impl Point { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] 296 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `distance_from_origin` is never used [INFO] [stdout] --> src/main.rs:301:12 [INFO] [stdout] | [INFO] [stdout] 300 | impl Point { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] 301 | fn distance_from_origin(&self) -> f32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_example` is never used [INFO] [stdout] --> src/main.rs:310:4 [INFO] [stdout] | [INFO] [stdout] 310 | fn traits_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `summarize_author` and `summarize` are never used [INFO] [stdout] --> src/main.rs:312:12 [INFO] [stdout] | [INFO] [stdout] 311 | pub trait Summary { [INFO] [stdout] | ------- methods in this trait [INFO] [stdout] 312 | fn summarize_author(&self) -> String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] 313 | fn summarize(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/main.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 318 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 322 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/main.rs:337:13 [INFO] [stdout] | [INFO] [stdout] 334 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 337 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 338 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `conditional_traits` is never used [INFO] [stdout] --> src/main.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn conditional_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/main.rs:363:12 [INFO] [stdout] | [INFO] [stdout] 362 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 363 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/main.rs:369:12 [INFO] [stdout] | [INFO] [stdout] 368 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 369 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/main.rs:379:4 [INFO] [stdout] | [INFO] [stdout] 379 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ttl_test` is never used [INFO] [stdout] --> src/main.rs:387:4 [INFO] [stdout] | [INFO] [stdout] 387 | fn ttl_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ttl_test2` is never used [INFO] [stdout] --> src/main.rs:397:4 [INFO] [stdout] | [INFO] [stdout] 397 | fn ttl_test2() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `level` and `bla` are never used [INFO] [stdout] --> src/main.rs:403:12 [INFO] [stdout] | [INFO] [stdout] 402 | impl<'a> ImportantExcept<'a> { [INFO] [stdout] | ---------------------------- methods in this implementation [INFO] [stdout] 403 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 406 | fn bla(&self, bla: &str) -> &str { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generic_traits_ttl` is never used [INFO] [stdout] --> src/main.rs:418:4 [INFO] [stdout] | [INFO] [stdout] 418 | fn generic_traits_ttl() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Cacher` is never constructed [INFO] [stdout] --> src/main.rs:434:8 [INFO] [stdout] | [INFO] [stdout] 434 | struct Cacher [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `value` are never used [INFO] [stdout] --> src/main.rs:446:8 [INFO] [stdout] | [INFO] [stdout] 442 | / impl Cacher [INFO] [stdout] 443 | | where [INFO] [stdout] 444 | | T: Fn(u32) -> u32, [INFO] [stdout] | |______________________- associated items in this implementation [INFO] [stdout] 445 | { [INFO] [stdout] 446 | fn new(calculation: T) -> Cacher { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 453 | fn value(&mut self, arg: u32) -> u32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closure_one` is never used [INFO] [stdout] --> src/main.rs:465:4 [INFO] [stdout] | [INFO] [stdout] 465 | fn closure_one() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `iterators` is never used [INFO] [stdout] --> src/main.rs:493:4 [INFO] [stdout] | [INFO] [stdout] 493 | fn iterators() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Shoe` is never constructed [INFO] [stdout] --> src/main.rs:507:8 [INFO] [stdout] | [INFO] [stdout] 507 | struct Shoe { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `shoes_in_my_size` is never used [INFO] [stdout] --> src/main.rs:512:4 [INFO] [stdout] | [INFO] [stdout] 512 | fn shoes_in_my_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Counter` is never constructed [INFO] [stdout] --> src/main.rs:516:8 [INFO] [stdout] | [INFO] [stdout] 516 | struct Counter { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/main.rs:520:8 [INFO] [stdout] | [INFO] [stdout] 519 | impl Counter { [INFO] [stdout] | ------------ associated function in this implementation [INFO] [stdout] 520 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/main.rs:538:6 [INFO] [stdout] | [INFO] [stdout] 538 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MyBox` is never constructed [INFO] [stdout] --> src/main.rs:543:8 [INFO] [stdout] | [INFO] [stdout] 543 | struct MyBox(T); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/main.rs:546:8 [INFO] [stdout] | [INFO] [stdout] 545 | impl MyBox { [INFO] [stdout] | ---------------- associated function in this implementation [INFO] [stdout] 546 | fn new(x: T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `CustomSmartPointer` is never constructed [INFO] [stdout] --> src/main.rs:564:8 [INFO] [stdout] | [INFO] [stdout] 564 | struct CustomSmartPointer { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Node` is never constructed [INFO] [stdout] --> src/main.rs:610:8 [INFO] [stdout] | [INFO] [stdout] 610 | struct Node { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `threads_test` is never used [INFO] [stdout] --> src/main.rs:616:4 [INFO] [stdout] | [INFO] [stdout] 616 | fn threads_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `channels_test` is never used [INFO] [stdout] --> src/main.rs:634:4 [INFO] [stdout] | [INFO] [stdout] 634 | fn channels_test() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mutex_test` is never used [INFO] [stdout] --> src/main.rs:668:4 [INFO] [stdout] | [INFO] [stdout] 668 | fn mutex_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `screen_test` is never used [INFO] [stdout] --> src/main.rs:718:4 [INFO] [stdout] | [INFO] [stdout] 718 | fn screen_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_let_test` is never used [INFO] [stdout] --> src/main.rs:750:4 [INFO] [stdout] | [INFO] [stdout] 750 | fn if_let_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `while_let_test` is never used [INFO] [stdout] --> src/main.rs:770:4 [INFO] [stdout] | [INFO] [stdout] 770 | fn while_let_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `for_destructure_test` is never used [INFO] [stdout] --> src/main.rs:781:4 [INFO] [stdout] | [INFO] [stdout] 781 | fn for_destructure_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fun_params_match` is never used [INFO] [stdout] --> src/main.rs:790:4 [INFO] [stdout] | [INFO] [stdout] 790 | fn fun_params_match() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `match_examples` is never used [INFO] [stdout] --> src/main.rs:798:4 [INFO] [stdout] | [INFO] [stdout] 798 | fn match_examples() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `HELLO_WORLD` is never used [INFO] [stdout] --> src/main.rs:965:8 [INFO] [stdout] | [INFO] [stdout] 965 | static HELLO_WORLD: &str = "Hello world"; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `COUNTER` is never used [INFO] [stdout] --> src/main.rs:966:12 [INFO] [stdout] | [INFO] [stdout] 966 | static mut COUNTER: u32 = 0; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `unsafe_examples` is never used [INFO] [stdout] --> src/main.rs:968:4 [INFO] [stdout] | [INFO] [stdout] 968 | fn unsafe_examples() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `advanced_lifetimes` is never used [INFO] [stdout] --> src/main.rs:1032:4 [INFO] [stdout] | [INFO] [stdout] 1032 | fn advanced_lifetimes() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `parse` is never used [INFO] [stdout] --> src/main.rs:1038:12 [INFO] [stdout] | [INFO] [stdout] 1037 | impl<'c, 's> Parser<'c, 's> { [INFO] [stdout] | --------------------------- method in this implementation [INFO] [stdout] 1038 | fn parse(&self) -> Result<(), &'s str> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_lifetimes` is never used [INFO] [stdout] --> src/main.rs:1048:4 [INFO] [stdout] | [INFO] [stdout] 1048 | fn traits_lifetimes() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `overloading_operators` is never used [INFO] [stdout] --> src/main.rs:1060:4 [INFO] [stdout] | [INFO] [stdout] 1060 | fn overloading_operators() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fully_qualified_syntax_for_disambiguation` is never used [INFO] [stdout] --> src/main.rs:1100:4 [INFO] [stdout] | [INFO] [stdout] 1100 | fn fully_qualified_syntax_for_disambiguation() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `fly` is never used [INFO] [stdout] --> src/main.rs:1124:12 [INFO] [stdout] | [INFO] [stdout] 1123 | impl Human { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] 1124 | fn fly(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `baby_name` is never used [INFO] [stdout] --> src/main.rs:1140:12 [INFO] [stdout] | [INFO] [stdout] 1139 | impl Dog { [INFO] [stdout] | -------- associated function in this implementation [INFO] [stdout] 1140 | fn baby_name() -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `using_supertrait_to_require_other_trait_func` is never used [INFO] [stdout] --> src/main.rs:1153:4 [INFO] [stdout] | [INFO] [stdout] 1153 | fn using_supertrait_to_require_other_trait_func() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `using_newtype_to_implement_external_traits` is never used [INFO] [stdout] --> src/main.rs:1183:4 [INFO] [stdout] | [INFO] [stdout] 1183 | fn using_newtype_to_implement_external_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `types_and_aliases_example` is never used [INFO] [stdout] --> src/main.rs:1196:4 [INFO] [stdout] | [INFO] [stdout] 1196 | fn types_and_aliases_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `dynamically_sized_types` is never used [INFO] [stdout] --> src/main.rs:1221:4 [INFO] [stdout] | [INFO] [stdout] 1221 | fn dynamically_sized_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `abs` is never used [INFO] [stdout] --> src/main.rs:1029:8 [INFO] [stdout] | [INFO] [stdout] 1029 | fn abs(input: i32) -> i32; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/main.rs:1020:33 [INFO] [stdout] | [INFO] [stdout] 1020 | println!("COUNTER: {}", COUNTER); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.21s [INFO] running `Command { std: "docker" "inspect" "ced8fc6cb5ed8ce59259688ff2ad1be6ecebd9c1ef44ced2f6f2f9171708457d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ced8fc6cb5ed8ce59259688ff2ad1be6ecebd9c1ef44ced2f6f2f9171708457d", kill_on_drop: false }` [INFO] [stdout] ced8fc6cb5ed8ce59259688ff2ad1be6ecebd9c1ef44ced2f6f2f9171708457d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 39abb76c23b0b7011154c763d2a4db4e2efa99909aabab731e23aac8648f9693 [INFO] running `Command { std: "docker" "start" "-a" "39abb76c23b0b7011154c763d2a4db4e2efa99909aabab731e23aac8648f9693", kill_on_drop: false }` [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/lib.rs:82:31 [INFO] [stdout] | [INFO] [stdout] 82 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rust_test v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::cmp::Ordering` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::cmp::Ordering; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/lib.rs:82:31 [INFO] [stdout] | [INFO] [stdout] 82 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert::Infallible` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::convert::Infallible; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::Iter` [INFO] [stdout] --> src/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use std::path::Iter; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process::exit` [INFO] [stdout] --> src/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use std::process::exit; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/main.rs:214:15 [INFO] [stdout] | [INFO] [stdout] 214 | let avg = (sum as f64 / v_len as f64); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 214 - let avg = (sum as f64 / v_len as f64); [INFO] [stdout] 214 + let avg = sum as f64 / v_len as f64; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Display`, `Formatter`, and `write` [INFO] [stdout] --> src/main.rs:552:16 [INFO] [stdout] | [INFO] [stdout] 552 | use std::fmt::{write, Display, Formatter}; [INFO] [stdout] | ^^^^^ ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `MutexGuard` and `Mutex` [INFO] [stdout] --> src/main.rs:554:17 [INFO] [stdout] | [INFO] [stdout] 554 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:828:10 [INFO] [stdout] | [INFO] [stdout] 828 | 1...5 => println!("in 1-5 range"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:833:12 [INFO] [stdout] | [INFO] [stdout] 833 | 'a'...'j' => println!("early ASCII letter"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:834:12 [INFO] [stdout] | [INFO] [stdout] 834 | 'k'...'z' => println!("late ASCII letter"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:952:32 [INFO] [stdout] | [INFO] [stdout] 952 | id: id_variable @ 3...7, [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:956:28 [INFO] [stdout] | [INFO] [stdout] 956 | Msg::Hello { id: 10...12 } => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/main.rs:1049:17 [INFO] [stdout] | [INFO] [stdout] 1049 | trait Red {}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> src/main.rs:1175:35 [INFO] [stdout] | [INFO] [stdout] 1175 | impl OutlinePrint for Point {}; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Ref` [INFO] [stdout] --> src/main.rs:1254:21 [INFO] [stdout] | [INFO] [stdout] 1254 | use std::cell::{Ref, RefCell}; [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/main.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | let six = plus_one(five); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `none` [INFO] [stdout] --> src/main.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | let none = plus_one(None); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_none` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:138:9 [INFO] [stdout] | [INFO] [stdout] 138 | let x = &v[1]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v2` [INFO] [stdout] --> src/main.rs:144:9 [INFO] [stdout] | [INFO] [stdout] 144 | let v2 = vec!["b", "v"]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/main.rs:147:9 [INFO] [stdout] | [INFO] [stdout] 147 | let first = &vector[0]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:141:9 [INFO] [stdout] | [INFO] [stdout] 141 | let mut e = &mut v[1]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `scores2` [INFO] [stdout] --> src/main.rs:192:13 [INFO] [stdout] | [INFO] [stdout] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:191:9 [INFO] [stdout] | [INFO] [stdout] 191 | let mut init_scores = vec![10, 50]; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:192:9 [INFO] [stdout] | [INFO] [stdout] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:238:9 [INFO] [stdout] | [INFO] [stdout] 238 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/main.rs:272:9 [INFO] [stdout] | [INFO] [stdout] 272 | let home: IPStd = "127.0.0.1".parse().unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:274:9 [INFO] [stdout] | [INFO] [stdout] 274 | let f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `integer` [INFO] [stdout] --> src/main.rs:306:9 [INFO] [stdout] | [INFO] [stdout] 306 | let integer = Point { x: 5, y: 10 }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `float` [INFO] [stdout] --> src/main.rs:307:9 [INFO] [stdout] | [INFO] [stdout] 307 | let float = Point { x: 1.0, y: 2.0 }; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_float` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:398:9 [INFO] [stdout] | [INFO] [stdout] 398 | let s: &'static str = "I have a static lifetime"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:413:9 [INFO] [stdout] | [INFO] [stdout] 413 | let i = ImportantExcept { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/main.rs:467:49 [INFO] [stdout] | [INFO] [stdout] 467 | let mut expensive_result = Cacher::new(|num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:498:9 [INFO] [stdout] | [INFO] [stdout] 498 | let sum: u32 = v1.iter().sum(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `blablator` [INFO] [stdout] --> src/main.rs:500:9 [INFO] [stdout] | [INFO] [stdout] 500 | let blablator: Vec = v1.iter().map(|x| x + 1).collect(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blablator` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:501:9 [INFO] [stdout] | [INFO] [stdout] 501 | let sum: u32 = v1.iter().sum(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:494:9 [INFO] [stdout] | [INFO] [stdout] 494 | let mut v1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:786:10 [INFO] [stdout] | [INFO] [stdout] 786 | let (a, b, _) = (1, 2, 3); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:786:13 [INFO] [stdout] | [INFO] [stdout] 786 | let (a, b, _) = (1, 2, 3); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:787:10 [INFO] [stdout] | [INFO] [stdout] 787 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:787:13 [INFO] [stdout] | [INFO] [stdout] 787 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `feet` [INFO] [stdout] --> src/main.rs:887:11 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_feet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `inches` [INFO] [stdout] --> src/main.rs:887:17 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:887:34 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:887:37 [INFO] [stdout] | [INFO] [stdout] 887 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `setting_value` is never read [INFO] [stdout] --> src/main.rs:897:13 [INFO] [stdout] | [INFO] [stdout] 897 | setting_value = new_setting_value; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> src/main.rs:981:9 [INFO] [stdout] | [INFO] [stdout] 981 | let r = address as *const i32; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `obj` [INFO] [stdout] --> src/main.rs:1057:9 [INFO] [stdout] | [INFO] [stdout] 1057 | let obj = Box::new(Ball { diameter: &num }) as Box; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_obj` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:1205:9 [INFO] [stdout] | [INFO] [stdout] 1205 | let f: Thunk = Box::new(|| println!("Hi")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:1206:24 [INFO] [stdout] | [INFO] [stdout] 1206 | fn takes_long_type(f: Thunk) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1226:19 [INFO] [stdout] | [INFO] [stdout] 1226 | fn generic(t: T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1228:27 [INFO] [stdout] | [INFO] [stdout] 1228 | fn generic2(t: T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:1234:28 [INFO] [stdout] | [INFO] [stdout] 1234 | fn generic3(t: &T) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_strings` [INFO] [stdout] --> src/main.rs:1248:9 [INFO] [stdout] | [INFO] [stdout] 1248 | let list_of_strings: Vec = list_of_numbers.iter().map(|i| i.to_string()).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_strings` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_strings2` [INFO] [stdout] --> src/main.rs:1249:9 [INFO] [stdout] | [INFO] [stdout] 1249 | let list_of_strings2: Vec = list_of_numbers.iter().map(ToString::to_string).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_strings2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/main.rs:1260:13 [INFO] [stdout] | [INFO] [stdout] 1260 | let v1 = c.value(1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/main.rs:1319:13 [INFO] [stdout] | [INFO] [stdout] 1319 | let d = CustomSmartPointer { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:1338:17 [INFO] [stdout] | [INFO] [stdout] 1338 | let b = Cons(Rc::new(RefCell::new(3)), Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:1340:17 [INFO] [stdout] | [INFO] [stdout] 1340 | let c = Cons(Rc::new(RefCell::new(3)), Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/main.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `area`, `height`, `double_height`, `can_hold`, `name`, and `square` are never used [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 31 | impl Rectangle { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 32 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 35 | fn height(&self) -> u32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 38 | fn double_height(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 41 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 44 | fn name() -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `rectangle_test` is never used [INFO] [stdout] --> src/main.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn rectangle_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IpAddrKind` is never used [INFO] [stdout] --> src/main.rs:84:6 [INFO] [stdout] | [INFO] [stdout] 84 | enum IpAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IpAddr` is never constructed [INFO] [stdout] --> src/main.rs:90:8 [INFO] [stdout] | [INFO] [stdout] 90 | struct IpAddr { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IP` is never used [INFO] [stdout] --> src/main.rs:96:6 [INFO] [stdout] | [INFO] [stdout] 96 | enum IP { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ip_test` is never used [INFO] [stdout] --> src/main.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn ip_test() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `opt_test` is never used [INFO] [stdout] --> src/main.rs:116:4 [INFO] [stdout] | [INFO] [stdout] 116 | fn opt_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_test` is never used [INFO] [stdout] --> src/main.rs:133:4 [INFO] [stdout] | [INFO] [stdout] 133 | fn vec_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `str_test` is never used [INFO] [stdout] --> src/main.rs:168:4 [INFO] [stdout] | [INFO] [stdout] 168 | fn str_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `chars_test` is never used [INFO] [stdout] --> src/main.rs:177:4 [INFO] [stdout] | [INFO] [stdout] 177 | fn chars_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hashmap_test` is never used [INFO] [stdout] --> src/main.rs:184:4 [INFO] [stdout] | [INFO] [stdout] 184 | fn hashmap_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ex1` is never used [INFO] [stdout] --> src/main.rs:207:4 [INFO] [stdout] | [INFO] [stdout] 207 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `panic` is never used [INFO] [stdout] --> src/main.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn panic() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `open_file` is never used [INFO] [stdout] --> src/main.rs:235:4 [INFO] [stdout] | [INFO] [stdout] 235 | fn open_file() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file` is never used [INFO] [stdout] --> src/main.rs:258:4 [INFO] [stdout] | [INFO] [stdout] 258 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_with_question` is never used [INFO] [stdout] --> src/main.rs:271:4 [INFO] [stdout] | [INFO] [stdout] 271 | fn read_username_from_file_with_question() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest` is never used [INFO] [stdout] --> src/main.rs:279:4 [INFO] [stdout] | [INFO] [stdout] 279 | fn largest(list: &[T]) -> &T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `struct_template` is never used [INFO] [stdout] --> src/main.rs:290:4 [INFO] [stdout] | [INFO] [stdout] 290 | fn struct_template() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `x` is never used [INFO] [stdout] --> src/main.rs:296:12 [INFO] [stdout] | [INFO] [stdout] 295 | impl Point { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] 296 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `distance_from_origin` is never used [INFO] [stdout] --> src/main.rs:301:12 [INFO] [stdout] | [INFO] [stdout] 300 | impl Point { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] 301 | fn distance_from_origin(&self) -> f32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_example` is never used [INFO] [stdout] --> src/main.rs:310:4 [INFO] [stdout] | [INFO] [stdout] 310 | fn traits_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `summarize_author` and `summarize` are never used [INFO] [stdout] --> src/main.rs:312:12 [INFO] [stdout] | [INFO] [stdout] 311 | pub trait Summary { [INFO] [stdout] | ------- methods in this trait [INFO] [stdout] 312 | fn summarize_author(&self) -> String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] 313 | fn summarize(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/main.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 318 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 322 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/main.rs:337:13 [INFO] [stdout] | [INFO] [stdout] 334 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 337 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 338 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `conditional_traits` is never used [INFO] [stdout] --> src/main.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn conditional_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/main.rs:363:12 [INFO] [stdout] | [INFO] [stdout] 362 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 363 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/main.rs:369:12 [INFO] [stdout] | [INFO] [stdout] 368 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 369 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/main.rs:379:4 [INFO] [stdout] | [INFO] [stdout] 379 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ttl_test` is never used [INFO] [stdout] --> src/main.rs:387:4 [INFO] [stdout] | [INFO] [stdout] 387 | fn ttl_test() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ttl_test2` is never used [INFO] [stdout] --> src/main.rs:397:4 [INFO] [stdout] | [INFO] [stdout] 397 | fn ttl_test2() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `level` and `bla` are never used [INFO] [stdout] --> src/main.rs:403:12 [INFO] [stdout] | [INFO] [stdout] 402 | impl<'a> ImportantExcept<'a> { [INFO] [stdout] | ---------------------------- methods in this implementation [INFO] [stdout] 403 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 406 | fn bla(&self, bla: &str) -> &str { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generic_traits_ttl` is never used [INFO] [stdout] --> src/main.rs:418:4 [INFO] [stdout] | [INFO] [stdout] 418 | fn generic_traits_ttl() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closure_one` is never used [INFO] [stdout] --> src/main.rs:465:4 [INFO] [stdout] | [INFO] [stdout] 465 | fn closure_one() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `iterators` is never used [INFO] [stdout] --> src/main.rs:493:4 [INFO] [stdout] | [INFO] [stdout] 493 | fn iterators() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> src/main.rs:539:10 [INFO] [stdout] | [INFO] [stdout] 539 | Cons(Rc>, Rc), [INFO] [stdout] | ---- ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 539 | Cons((), ()), [INFO] [stdout] | ~~ ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `children` are never read [INFO] [stdout] --> src/main.rs:611:5 [INFO] [stdout] | [INFO] [stdout] 610 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 611 | value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 612 | parent: RefCell>, [INFO] [stdout] 613 | children: RefCell>>, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `threads_test` is never used [INFO] [stdout] --> src/main.rs:616:4 [INFO] [stdout] | [INFO] [stdout] 616 | fn threads_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `channels_test` is never used [INFO] [stdout] --> src/main.rs:634:4 [INFO] [stdout] | [INFO] [stdout] 634 | fn channels_test() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mutex_test` is never used [INFO] [stdout] --> src/main.rs:668:4 [INFO] [stdout] | [INFO] [stdout] 668 | fn mutex_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `screen_test` is never used [INFO] [stdout] --> src/main.rs:718:4 [INFO] [stdout] | [INFO] [stdout] 718 | fn screen_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_let_test` is never used [INFO] [stdout] --> src/main.rs:750:4 [INFO] [stdout] | [INFO] [stdout] 750 | fn if_let_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `while_let_test` is never used [INFO] [stdout] --> src/main.rs:770:4 [INFO] [stdout] | [INFO] [stdout] 770 | fn while_let_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `for_destructure_test` is never used [INFO] [stdout] --> src/main.rs:781:4 [INFO] [stdout] | [INFO] [stdout] 781 | fn for_destructure_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fun_params_match` is never used [INFO] [stdout] --> src/main.rs:790:4 [INFO] [stdout] | [INFO] [stdout] 790 | fn fun_params_match() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `match_examples` is never used [INFO] [stdout] --> src/main.rs:798:4 [INFO] [stdout] | [INFO] [stdout] 798 | fn match_examples() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `HELLO_WORLD` is never used [INFO] [stdout] --> src/main.rs:965:8 [INFO] [stdout] | [INFO] [stdout] 965 | static HELLO_WORLD: &str = "Hello world"; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `COUNTER` is never used [INFO] [stdout] --> src/main.rs:966:12 [INFO] [stdout] | [INFO] [stdout] 966 | static mut COUNTER: u32 = 0; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `unsafe_examples` is never used [INFO] [stdout] --> src/main.rs:968:4 [INFO] [stdout] | [INFO] [stdout] 968 | fn unsafe_examples() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `advanced_lifetimes` is never used [INFO] [stdout] --> src/main.rs:1032:4 [INFO] [stdout] | [INFO] [stdout] 1032 | fn advanced_lifetimes() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `parse` is never used [INFO] [stdout] --> src/main.rs:1038:12 [INFO] [stdout] | [INFO] [stdout] 1037 | impl<'c, 's> Parser<'c, 's> { [INFO] [stdout] | --------------------------- method in this implementation [INFO] [stdout] 1038 | fn parse(&self) -> Result<(), &'s str> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `traits_lifetimes` is never used [INFO] [stdout] --> src/main.rs:1048:4 [INFO] [stdout] | [INFO] [stdout] 1048 | fn traits_lifetimes() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `overloading_operators` is never used [INFO] [stdout] --> src/main.rs:1060:4 [INFO] [stdout] | [INFO] [stdout] 1060 | fn overloading_operators() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fully_qualified_syntax_for_disambiguation` is never used [INFO] [stdout] --> src/main.rs:1100:4 [INFO] [stdout] | [INFO] [stdout] 1100 | fn fully_qualified_syntax_for_disambiguation() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `fly` is never used [INFO] [stdout] --> src/main.rs:1124:12 [INFO] [stdout] | [INFO] [stdout] 1123 | impl Human { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] 1124 | fn fly(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `baby_name` is never used [INFO] [stdout] --> src/main.rs:1140:12 [INFO] [stdout] | [INFO] [stdout] 1139 | impl Dog { [INFO] [stdout] | -------- associated function in this implementation [INFO] [stdout] 1140 | fn baby_name() -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `using_supertrait_to_require_other_trait_func` is never used [INFO] [stdout] --> src/main.rs:1153:4 [INFO] [stdout] | [INFO] [stdout] 1153 | fn using_supertrait_to_require_other_trait_func() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `using_newtype_to_implement_external_traits` is never used [INFO] [stdout] --> src/main.rs:1183:4 [INFO] [stdout] | [INFO] [stdout] 1183 | fn using_newtype_to_implement_external_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `types_and_aliases_example` is never used [INFO] [stdout] --> src/main.rs:1196:4 [INFO] [stdout] | [INFO] [stdout] 1196 | fn types_and_aliases_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `dynamically_sized_types` is never used [INFO] [stdout] --> src/main.rs:1221:4 [INFO] [stdout] | [INFO] [stdout] 1221 | fn dynamically_sized_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/main.rs:1020:33 [INFO] [stdout] | [INFO] [stdout] 1020 | println!("COUNTER: {}", COUNTER); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s [INFO] running `Command { std: "docker" "inspect" "39abb76c23b0b7011154c763d2a4db4e2efa99909aabab731e23aac8648f9693", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "39abb76c23b0b7011154c763d2a4db4e2efa99909aabab731e23aac8648f9693", kill_on_drop: false }` [INFO] [stdout] 39abb76c23b0b7011154c763d2a4db4e2efa99909aabab731e23aac8648f9693