[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] 2b9cd9d1d5da183af5556f0577db22bb51ab1d43 [INFO] testing szymonnogiec/rust_test against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszymonnogiec%2Frust_test" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/szymonnogiec/rust_test on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-9/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: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b45044cb798c614f21a31b7262c1278cbd39994e330d94607435a3e013dea878 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b45044cb798c614f21a31b7262c1278cbd39994e330d94607435a3e013dea878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b45044cb798c614f21a31b7262c1278cbd39994e330d94607435a3e013dea878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b45044cb798c614f21a31b7262c1278cbd39994e330d94607435a3e013dea878", kill_on_drop: false }` [INFO] [stdout] b45044cb798c614f21a31b7262c1278cbd39994e330d94607435a3e013dea878 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70812b21221dcc9b95afbed31748cb93c788571aaf16599b7a0c58d1fbf1db8c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "70812b21221dcc9b95afbed31748cb93c788571aaf16599b7a0c58d1fbf1db8c", 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: 1 warning emitted [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: `MutexGuard`, `Mutex` [INFO] [stdout] --> src/main.rs:553:17 [INFO] [stdout] | [INFO] [stdout] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Mutex` is imported redundantly [INFO] [stdout] --> src/main.rs:669:9 [INFO] [stdout] | [INFO] [stdout] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ----- the item `Mutex` is already imported here [INFO] [stdout] ... [INFO] [stdout] 669 | use std::sync::Mutex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:827:10 [INFO] [stdout] | [INFO] [stdout] 827 | 1...5 => println!("in 1-5 range"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [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:832:12 [INFO] [stdout] | [INFO] [stdout] 832 | '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:833:12 [INFO] [stdout] | [INFO] [stdout] 833 | '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:951:32 [INFO] [stdout] | [INFO] [stdout] 951 | 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:955:28 [INFO] [stdout] | [INFO] [stdout] 955 | 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: 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: 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: 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: unused variable: `a` [INFO] [stdout] --> src/main.rs:785:10 [INFO] [stdout] | [INFO] [stdout] 785 | 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:785:13 [INFO] [stdout] | [INFO] [stdout] 785 | 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:786:10 [INFO] [stdout] | [INFO] [stdout] 786 | 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:786:13 [INFO] [stdout] | [INFO] [stdout] 786 | 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:886:11 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:17 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:34 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:37 [INFO] [stdout] | [INFO] [stdout] 886 | 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:896:13 [INFO] [stdout] | [INFO] [stdout] 896 | setting_value = new_setting_value; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [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: 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: 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: field is never read: `width` [INFO] [stdout] --> src/main.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 27 | width: u32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `height` [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | height: u32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `area` [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `height` [INFO] [stdout] --> src/main.rs:35:8 [INFO] [stdout] | [INFO] [stdout] 35 | fn height(&self) -> u32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `double_height` [INFO] [stdout] --> src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn double_height(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/main.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `name` [INFO] [stdout] --> src/main.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | fn name() -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> src/main.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rectangle_test` [INFO] [stdout] --> src/main.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn rectangle_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/main.rs:85:5 [INFO] [stdout] | [INFO] [stdout] 85 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/main.rs:86:5 [INFO] [stdout] | [INFO] [stdout] 86 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `kind` [INFO] [stdout] --> src/main.rs:91:5 [INFO] [stdout] | [INFO] [stdout] 91 | kind: IpAddrKind, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `address` [INFO] [stdout] --> src/main.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 92 | address: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/main.rs:97:5 [INFO] [stdout] | [INFO] [stdout] 97 | V4(u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/main.rs:98:5 [INFO] [stdout] | [INFO] [stdout] 98 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `ip_test` [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 is never used: `opt_test` [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 is never used: `vec_test` [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 is never used: `str_test` [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 is never used: `chars_test` [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 is never used: `hashmap_test` [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 is never used: `ex1` [INFO] [stdout] --> src/main.rs:207:4 [INFO] [stdout] | [INFO] [stdout] 207 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `panic` [INFO] [stdout] --> src/main.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn panic() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `open_file` [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 is never used: `read_username_from_file` [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 is never used: `read_username_from_file_with_question` [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 is never used: `largest` [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 is never used: `struct_template` [INFO] [stdout] --> src/main.rs:290:4 [INFO] [stdout] | [INFO] [stdout] 290 | fn struct_template() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `traits_example` [INFO] [stdout] --> src/main.rs:310:4 [INFO] [stdout] | [INFO] [stdout] 310 | fn traits_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `conditional_traits` [INFO] [stdout] --> src/main.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn conditional_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest` [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 is never used: `ttl_test` [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 is never used: `ttl_test2` [INFO] [stdout] --> src/main.rs:397:4 [INFO] [stdout] | [INFO] [stdout] 397 | fn ttl_test2() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `generic_traits_ttl` [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 is never constructed: `Cacher` [INFO] [stdout] --> src/main.rs:434:8 [INFO] [stdout] | [INFO] [stdout] 434 | struct Cacher [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/main.rs:446:8 [INFO] [stdout] | [INFO] [stdout] 446 | fn new(calculation: T) -> Cacher { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/main.rs:453:8 [INFO] [stdout] | [INFO] [stdout] 453 | fn value(&mut self, arg: u32) -> u32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `closure_one` [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 is never used: `iterators` [INFO] [stdout] --> src/main.rs:493:4 [INFO] [stdout] | [INFO] [stdout] 493 | fn iterators() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `shoes_in_my_size` [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: associated function is never used: `new` [INFO] [stdout] --> src/main.rs:520:8 [INFO] [stdout] | [INFO] [stdout] 520 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/main.rs:538:6 [INFO] [stdout] | [INFO] [stdout] 538 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/main.rs:546:8 [INFO] [stdout] | [INFO] [stdout] 546 | fn new(x: T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/main.rs:610:5 [INFO] [stdout] | [INFO] [stdout] 610 | value: i32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `parent` [INFO] [stdout] --> src/main.rs:611:5 [INFO] [stdout] | [INFO] [stdout] 611 | parent: RefCell>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `children` [INFO] [stdout] --> src/main.rs:612:5 [INFO] [stdout] | [INFO] [stdout] 612 | children: RefCell>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `threads_test` [INFO] [stdout] --> src/main.rs:615:4 [INFO] [stdout] | [INFO] [stdout] 615 | fn threads_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `channels_test` [INFO] [stdout] --> src/main.rs:633:4 [INFO] [stdout] | [INFO] [stdout] 633 | fn channels_test() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `mutex_test` [INFO] [stdout] --> src/main.rs:667:4 [INFO] [stdout] | [INFO] [stdout] 667 | fn mutex_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `screen_test` [INFO] [stdout] --> src/main.rs:717:4 [INFO] [stdout] | [INFO] [stdout] 717 | fn screen_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `if_let_test` [INFO] [stdout] --> src/main.rs:749:4 [INFO] [stdout] | [INFO] [stdout] 749 | fn if_let_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `while_let_test` [INFO] [stdout] --> src/main.rs:769:4 [INFO] [stdout] | [INFO] [stdout] 769 | fn while_let_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `for_destructure_test` [INFO] [stdout] --> src/main.rs:780:4 [INFO] [stdout] | [INFO] [stdout] 780 | fn for_destructure_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `fun_params_match` [INFO] [stdout] --> src/main.rs:789:4 [INFO] [stdout] | [INFO] [stdout] 789 | fn fun_params_match() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/main.rs:857:9 [INFO] [stdout] | [INFO] [stdout] 857 | Quit, // no param [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/main.rs:858:9 [INFO] [stdout] | [INFO] [stdout] 858 | Move { x: i32, y: i32 }, // struct-like [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/main.rs:859:9 [INFO] [stdout] | [INFO] [stdout] 859 | Write(String), // single-element tuple [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 101 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.14s [INFO] running `Command { std: "docker" "inspect" "70812b21221dcc9b95afbed31748cb93c788571aaf16599b7a0c58d1fbf1db8c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70812b21221dcc9b95afbed31748cb93c788571aaf16599b7a0c58d1fbf1db8c", kill_on_drop: false }` [INFO] [stdout] 70812b21221dcc9b95afbed31748cb93c788571aaf16599b7a0c58d1fbf1db8c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2117f80a3dde17006404be3663ba21319c35cd3ff910d0a9848d5589dc990acd [INFO] running `Command { std: "docker" "start" "-a" "2117f80a3dde17006404be3663ba21319c35cd3ff910d0a9848d5589dc990acd", kill_on_drop: false }` [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: 1 warning emitted [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::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: `MutexGuard`, `Mutex` [INFO] [stdout] --> src/main.rs:553:17 [INFO] [stdout] | [INFO] [stdout] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Mutex` is imported redundantly [INFO] [stdout] --> src/main.rs:669:9 [INFO] [stdout] | [INFO] [stdout] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stdout] | ----- the item `Mutex` is already imported here [INFO] [stdout] ... [INFO] [stdout] 669 | use std::sync::Mutex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/main.rs:827:10 [INFO] [stdout] | [INFO] [stdout] 827 | 1...5 => println!("in 1-5 range"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [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:832:12 [INFO] [stdout] | [INFO] [stdout] 832 | '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:833:12 [INFO] [stdout] | [INFO] [stdout] 833 | '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:951:32 [INFO] [stdout] | [INFO] [stdout] 951 | 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:955:28 [INFO] [stdout] | [INFO] [stdout] 955 | 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: unused import: `Ref` [INFO] [stdout] --> src/main.rs:967:21 [INFO] [stdout] | [INFO] [stdout] 967 | 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: 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: 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: unused variable: `a` [INFO] [stdout] --> src/main.rs:785:10 [INFO] [stdout] | [INFO] [stdout] 785 | 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:785:13 [INFO] [stdout] | [INFO] [stdout] 785 | 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:786:10 [INFO] [stdout] | [INFO] [stdout] 786 | 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:786:13 [INFO] [stdout] | [INFO] [stdout] 786 | 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:886:11 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:17 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:34 [INFO] [stdout] | [INFO] [stdout] 886 | 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:886:37 [INFO] [stdout] | [INFO] [stdout] 886 | 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:896:13 [INFO] [stdout] | [INFO] [stdout] 896 | setting_value = new_setting_value; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/main.rs:973:13 [INFO] [stdout] | [INFO] [stdout] 973 | 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:1032:13 [INFO] [stdout] | [INFO] [stdout] 1032 | 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:1051:17 [INFO] [stdout] | [INFO] [stdout] 1051 | 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:1053:17 [INFO] [stdout] | [INFO] [stdout] 1053 | 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: 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: 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: 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: field is never read: `width` [INFO] [stdout] --> src/main.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 27 | width: u32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `height` [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | height: u32, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `area` [INFO] [stdout] --> src/main.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `height` [INFO] [stdout] --> src/main.rs:35:8 [INFO] [stdout] | [INFO] [stdout] 35 | fn height(&self) -> u32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `double_height` [INFO] [stdout] --> src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | fn double_height(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/main.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `name` [INFO] [stdout] --> src/main.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | fn name() -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> src/main.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rectangle_test` [INFO] [stdout] --> src/main.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn rectangle_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/main.rs:85:5 [INFO] [stdout] | [INFO] [stdout] 85 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/main.rs:86:5 [INFO] [stdout] | [INFO] [stdout] 86 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `kind` [INFO] [stdout] --> src/main.rs:91:5 [INFO] [stdout] | [INFO] [stdout] 91 | kind: IpAddrKind, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `address` [INFO] [stdout] --> src/main.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 92 | address: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/main.rs:97:5 [INFO] [stdout] | [INFO] [stdout] 97 | V4(u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/main.rs:98:5 [INFO] [stdout] | [INFO] [stdout] 98 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `ip_test` [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 is never used: `opt_test` [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 is never used: `vec_test` [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 is never used: `str_test` [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 is never used: `chars_test` [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 is never used: `hashmap_test` [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 is never used: `ex1` [INFO] [stdout] --> src/main.rs:207:4 [INFO] [stdout] | [INFO] [stdout] 207 | fn ex1() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `panic` [INFO] [stdout] --> src/main.rs:230:4 [INFO] [stdout] | [INFO] [stdout] 230 | fn panic() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `open_file` [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 is never used: `read_username_from_file` [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 is never used: `read_username_from_file_with_question` [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 is never used: `largest` [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 is never used: `struct_template` [INFO] [stdout] --> src/main.rs:290:4 [INFO] [stdout] | [INFO] [stdout] 290 | fn struct_template() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `traits_example` [INFO] [stdout] --> src/main.rs:310:4 [INFO] [stdout] | [INFO] [stdout] 310 | fn traits_example() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `conditional_traits` [INFO] [stdout] --> src/main.rs:354:4 [INFO] [stdout] | [INFO] [stdout] 354 | fn conditional_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest` [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 is never used: `ttl_test` [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 is never used: `ttl_test2` [INFO] [stdout] --> src/main.rs:397:4 [INFO] [stdout] | [INFO] [stdout] 397 | fn ttl_test2() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `generic_traits_ttl` [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 is never used: `closure_one` [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 is never used: `iterators` [INFO] [stdout] --> src/main.rs:493:4 [INFO] [stdout] | [INFO] [stdout] 493 | fn iterators() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/main.rs:610:5 [INFO] [stdout] | [INFO] [stdout] 610 | value: i32, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `children` [INFO] [stdout] --> src/main.rs:612:5 [INFO] [stdout] | [INFO] [stdout] 612 | children: RefCell>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `threads_test` [INFO] [stdout] --> src/main.rs:615:4 [INFO] [stdout] | [INFO] [stdout] 615 | fn threads_test() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `channels_test` [INFO] [stdout] --> src/main.rs:633:4 [INFO] [stdout] | [INFO] [stdout] 633 | fn channels_test() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `mutex_test` [INFO] [stdout] --> src/main.rs:667:4 [INFO] [stdout] | [INFO] [stdout] 667 | fn mutex_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `screen_test` [INFO] [stdout] --> src/main.rs:717:4 [INFO] [stdout] | [INFO] [stdout] 717 | fn screen_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `if_let_test` [INFO] [stdout] --> src/main.rs:749:4 [INFO] [stdout] | [INFO] [stdout] 749 | fn if_let_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `while_let_test` [INFO] [stdout] --> src/main.rs:769:4 [INFO] [stdout] | [INFO] [stdout] 769 | fn while_let_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `for_destructure_test` [INFO] [stdout] --> src/main.rs:780:4 [INFO] [stdout] | [INFO] [stdout] 780 | fn for_destructure_test() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `fun_params_match` [INFO] [stdout] --> src/main.rs:789:4 [INFO] [stdout] | [INFO] [stdout] 789 | fn fun_params_match() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Quit` [INFO] [stdout] --> src/main.rs:857:9 [INFO] [stdout] | [INFO] [stdout] 857 | Quit, // no param [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/main.rs:858:9 [INFO] [stdout] | [INFO] [stdout] 858 | Move { x: i32, y: i32 }, // struct-like [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Write` [INFO] [stdout] --> src/main.rs:859:9 [INFO] [stdout] | [INFO] [stdout] 859 | Write(String), // single-element tuple [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 98 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.44s [INFO] running `Command { std: "docker" "inspect" "2117f80a3dde17006404be3663ba21319c35cd3ff910d0a9848d5589dc990acd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2117f80a3dde17006404be3663ba21319c35cd3ff910d0a9848d5589dc990acd", kill_on_drop: false }` [INFO] [stdout] 2117f80a3dde17006404be3663ba21319c35cd3ff910d0a9848d5589dc990acd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 980d45f358e428dda6e891c6cdc53871dc1b1e88ae3e40aef702602398c5bb8b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "980d45f358e428dda6e891c6cdc53871dc1b1e88ae3e40aef702602398c5bb8b", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused variable: `post` [INFO] [stderr] --> src/lib.rs:82:31 [INFO] [stderr] | [INFO] [stderr] 82 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `rust_test` (lib) generated 1 warning [INFO] [stderr] warning: `rust_test` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] warning: unused import: `std::cmp::Ordering` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::cmp::Ordering; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert::Infallible` [INFO] [stderr] --> src/main.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::convert::Infallible; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::path::Iter` [INFO] [stderr] --> src/main.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | use std::path::Iter; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::process::exit` [INFO] [stderr] --> src/main.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use std::process::exit; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `rand::Rng` [INFO] [stderr] --> src/main.rs:16:5 [INFO] [stderr] | [INFO] [stderr] 16 | use rand::Rng; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/main.rs:214:15 [INFO] [stderr] | [INFO] [stderr] 214 | let avg = (sum as f64 / v_len as f64); [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 214 - let avg = (sum as f64 / v_len as f64); [INFO] [stderr] 214 + let avg = sum as f64 / v_len as f64; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused imports: `MutexGuard`, `Mutex` [INFO] [stderr] --> src/main.rs:553:17 [INFO] [stderr] | [INFO] [stderr] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stderr] | ^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: the item `Mutex` is imported redundantly [INFO] [stderr] --> src/main.rs:669:9 [INFO] [stderr] | [INFO] [stderr] 553 | use std::sync::{Mutex, MutexGuard}; [INFO] [stderr] | ----- the item `Mutex` is already imported here [INFO] [stderr] ... [INFO] [stderr] 669 | use std::sync::Mutex; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/main.rs:827:10 [INFO] [stderr] | [INFO] [stderr] 827 | 1...5 => println!("in 1-5 range"), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/main.rs:832:12 [INFO] [stderr] | [INFO] [stderr] 832 | 'a'...'j' => println!("early ASCII letter"), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/main.rs:833:12 [INFO] [stderr] | [INFO] [stderr] 833 | 'k'...'z' => println!("late ASCII letter"), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/main.rs:951:32 [INFO] [stderr] | [INFO] [stderr] 951 | id: id_variable @ 3...7, [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/main.rs:955:28 [INFO] [stderr] | [INFO] [stderr] 955 | Msg::Hello { id: 10...12 } => { [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: unused import: `Ref` [INFO] [stderr] --> src/main.rs:967:21 [INFO] [stderr] | [INFO] [stderr] 967 | use std::cell::{Ref, RefCell}; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/main.rs:124:9 [INFO] [stderr] | [INFO] [stderr] 124 | let six = plus_one(five); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/main.rs:125:9 [INFO] [stderr] | [INFO] [stderr] 125 | let none = plus_one(None); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_none` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:138:9 [INFO] [stderr] | [INFO] [stderr] 138 | let x = &v[1]; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v2` [INFO] [stderr] --> src/main.rs:144:9 [INFO] [stderr] | [INFO] [stderr] 144 | let v2 = vec!["b", "v"]; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `first` [INFO] [stderr] --> src/main.rs:147:9 [INFO] [stderr] | [INFO] [stderr] 147 | let first = &vector[0]; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scores2` [INFO] [stderr] --> src/main.rs:192:13 [INFO] [stderr] | [INFO] [stderr] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scores2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:238:9 [INFO] [stderr] | [INFO] [stderr] 238 | let f = match f { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:272:9 [INFO] [stderr] | [INFO] [stderr] 272 | let home: IPStd = "127.0.0.1".parse().unwrap(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:274:9 [INFO] [stderr] | [INFO] [stderr] 274 | let f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `integer` [INFO] [stderr] --> src/main.rs:306:9 [INFO] [stderr] | [INFO] [stderr] 306 | let integer = Point { x: 5, y: 10 }; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `float` [INFO] [stderr] --> src/main.rs:307:9 [INFO] [stderr] | [INFO] [stderr] 307 | let float = Point { x: 1.0, y: 2.0 }; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_float` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/main.rs:398:9 [INFO] [stderr] | [INFO] [stderr] 398 | let s: &'static str = "I have a static lifetime"; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:413:9 [INFO] [stderr] | [INFO] [stderr] 413 | let i = ImportantExcept { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:467:49 [INFO] [stderr] | [INFO] [stderr] 467 | let mut expensive_result = Cacher::new(|num| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:498:9 [INFO] [stderr] | [INFO] [stderr] 498 | let sum: u32 = v1.iter().sum(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `blablator` [INFO] [stderr] --> src/main.rs:500:9 [INFO] [stderr] | [INFO] [stderr] 500 | let blablator: Vec = v1.iter().map(|x| x + 1).collect(); [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_blablator` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:501:9 [INFO] [stderr] | [INFO] [stderr] 501 | let sum: u32 = v1.iter().sum(); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:785:10 [INFO] [stderr] | [INFO] [stderr] 785 | let (a, b, _) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:785:13 [INFO] [stderr] | [INFO] [stderr] 785 | let (a, b, _) = (1, 2, 3); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:786:10 [INFO] [stderr] | [INFO] [stderr] 786 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:786:13 [INFO] [stderr] | [INFO] [stderr] 786 | let (a, b, ..) = (1, 2, 3, 4, 5, 6, 7, 8, 9); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `feet` [INFO] [stderr] --> src/main.rs:886:11 [INFO] [stderr] | [INFO] [stderr] 886 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_feet` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `inches` [INFO] [stderr] --> src/main.rs:886:17 [INFO] [stderr] | [INFO] [stderr] 886 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:886:34 [INFO] [stderr] | [INFO] [stderr] 886 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stderr] | ^ help: try ignoring the field: `x: _` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:886:37 [INFO] [stderr] | [INFO] [stderr] 886 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stderr] | ^ help: try ignoring the field: `y: _` [INFO] [stderr] [INFO] [stderr] warning: value assigned to `setting_value` is never read [INFO] [stderr] --> src/main.rs:896:13 [INFO] [stderr] | [INFO] [stderr] 896 | setting_value = new_setting_value; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/main.rs:973:13 [INFO] [stderr] | [INFO] [stderr] 973 | let v1 = c.value(1); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:1032:13 [INFO] [stderr] | [INFO] [stderr] 1032 | let d = CustomSmartPointer { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:1051:17 [INFO] [stderr] | [INFO] [stderr] 1051 | let b = Cons(Rc::new(RefCell::new(3)), Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:1053:17 [INFO] [stderr] | [INFO] [stderr] 1053 | let c = Cons(Rc::new(RefCell::new(3)), Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:141:9 [INFO] [stderr] | [INFO] [stderr] 141 | let mut e = &mut v[1]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:191:9 [INFO] [stderr] | [INFO] [stderr] 191 | let mut init_scores = vec![10, 50]; [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:192:9 [INFO] [stderr] | [INFO] [stderr] 192 | let mut scores2: HashMap<_, _> = teams.iter().zip(init_scores.iter()).collect(); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:494:9 [INFO] [stderr] | [INFO] [stderr] 494 | let mut v1 = vec![1, 2, 3]; [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `width` [INFO] [stderr] --> src/main.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | width: u32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `height` [INFO] [stderr] --> src/main.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | height: u32, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `area` [INFO] [stderr] --> src/main.rs:32:8 [INFO] [stderr] | [INFO] [stderr] 32 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `height` [INFO] [stderr] --> src/main.rs:35:8 [INFO] [stderr] | [INFO] [stderr] 35 | fn height(&self) -> u32 { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `double_height` [INFO] [stderr] --> src/main.rs:38:8 [INFO] [stderr] | [INFO] [stderr] 38 | fn double_height(&mut self) { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `can_hold` [INFO] [stderr] --> src/main.rs:41:8 [INFO] [stderr] | [INFO] [stderr] 41 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `name` [INFO] [stderr] --> src/main.rs:44:8 [INFO] [stderr] | [INFO] [stderr] 44 | fn name() -> String { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/main.rs:47:8 [INFO] [stderr] | [INFO] [stderr] 47 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rectangle_test` [INFO] [stderr] --> src/main.rs:55:4 [INFO] [stderr] | [INFO] [stderr] 55 | fn rectangle_test() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V4` [INFO] [stderr] --> src/main.rs:85:5 [INFO] [stderr] | [INFO] [stderr] 85 | V4, [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V6` [INFO] [stderr] --> src/main.rs:86:5 [INFO] [stderr] | [INFO] [stderr] 86 | V6, [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `kind` [INFO] [stderr] --> src/main.rs:91:5 [INFO] [stderr] | [INFO] [stderr] 91 | kind: IpAddrKind, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `address` [INFO] [stderr] --> src/main.rs:92:5 [INFO] [stderr] | [INFO] [stderr] 92 | address: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V4` [INFO] [stderr] --> src/main.rs:97:5 [INFO] [stderr] | [INFO] [stderr] 97 | V4(u8, u8, u8, u8), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V6` [INFO] [stderr] --> src/main.rs:98:5 [INFO] [stderr] | [INFO] [stderr] 98 | V6(String), [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ip_test` [INFO] [stderr] --> src/main.rs:101:4 [INFO] [stderr] | [INFO] [stderr] 101 | fn ip_test() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `opt_test` [INFO] [stderr] --> src/main.rs:116:4 [INFO] [stderr] | [INFO] [stderr] 116 | fn opt_test() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `vec_test` [INFO] [stderr] --> src/main.rs:133:4 [INFO] [stderr] | [INFO] [stderr] 133 | fn vec_test() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `str_test` [INFO] [stderr] --> src/main.rs:168:4 [INFO] [stderr] | [INFO] [stderr] 168 | fn str_test() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `chars_test` [INFO] [stderr] --> src/main.rs:177:4 [INFO] [stderr] | [INFO] [stderr] 177 | fn chars_test() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hashmap_test` [INFO] [stderr] --> src/main.rs:184:4 [INFO] [stderr] | [INFO] [stderr] 184 | fn hashmap_test() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ex1` [INFO] [stderr] --> src/main.rs:207:4 [INFO] [stderr] | [INFO] [stderr] 207 | fn ex1() { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `panic` [INFO] [stderr] --> src/main.rs:230:4 [INFO] [stderr] | [INFO] [stderr] 230 | fn panic() { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `open_file` [INFO] [stderr] --> src/main.rs:235:4 [INFO] [stderr] | [INFO] [stderr] 235 | fn open_file() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file` [INFO] [stderr] --> src/main.rs:258:4 [INFO] [stderr] | [INFO] [stderr] 258 | fn read_username_from_file() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file_with_question` [INFO] [stderr] --> src/main.rs:271:4 [INFO] [stderr] | [INFO] [stderr] 271 | fn read_username_from_file_with_question() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `largest` [INFO] [stderr] --> src/main.rs:279:4 [INFO] [stderr] | [INFO] [stderr] 279 | fn largest(list: &[T]) -> &T { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `struct_template` [INFO] [stderr] --> src/main.rs:290:4 [INFO] [stderr] | [INFO] [stderr] 290 | fn struct_template() { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `traits_example` [INFO] [stderr] --> src/main.rs:310:4 [INFO] [stderr] | [INFO] [stderr] 310 | fn traits_example() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `conditional_traits` [INFO] [stderr] --> src/main.rs:354:4 [INFO] [stderr] | [INFO] [stderr] 354 | fn conditional_traits() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `longest` [INFO] [stderr] --> src/main.rs:379:4 [INFO] [stderr] | [INFO] [stderr] 379 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ttl_test` [INFO] [stderr] --> src/main.rs:387:4 [INFO] [stderr] | [INFO] [stderr] 387 | fn ttl_test() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ttl_test2` [INFO] [stderr] --> src/main.rs:397:4 [INFO] [stderr] | [INFO] [stderr] 397 | fn ttl_test2() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `generic_traits_ttl` [INFO] [stderr] --> src/main.rs:418:4 [INFO] [stderr] | [INFO] [stderr] 418 | fn generic_traits_ttl() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `closure_one` [INFO] [stderr] --> src/main.rs:465:4 [INFO] [stderr] | [INFO] [stderr] 465 | fn closure_one() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `iterators` [INFO] [stderr] --> src/main.rs:493:4 [INFO] [stderr] | [INFO] [stderr] 493 | fn iterators() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `value` [INFO] [stderr] --> src/main.rs:610:5 [INFO] [stderr] | [INFO] [stderr] 610 | value: i32, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `children` [INFO] [stderr] --> src/main.rs:612:5 [INFO] [stderr] | [INFO] [stderr] 612 | children: RefCell>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `threads_test` [INFO] [stderr] --> src/main.rs:615:4 [INFO] [stderr] | [INFO] [stderr] 615 | fn threads_test() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `channels_test` [INFO] [stderr] --> src/main.rs:633:4 [INFO] [stderr] | [INFO] [stderr] 633 | fn channels_test() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `mutex_test` [INFO] [stderr] --> src/main.rs:667:4 [INFO] [stderr] | [INFO] [stderr] 667 | fn mutex_test() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `screen_test` [INFO] [stderr] --> src/main.rs:717:4 [INFO] [stderr] | [INFO] [stderr] 717 | fn screen_test() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `if_let_test` [INFO] [stderr] --> src/main.rs:749:4 [INFO] [stderr] | [INFO] [stderr] 749 | fn if_let_test() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `while_let_test` [INFO] [stderr] --> src/main.rs:769:4 [INFO] [stderr] | [INFO] [stderr] 769 | fn while_let_test() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `for_destructure_test` [INFO] [stderr] --> src/main.rs:780:4 [INFO] [stderr] | [INFO] [stderr] 780 | fn for_destructure_test() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `fun_params_match` [INFO] [stderr] --> src/main.rs:789:4 [INFO] [stderr] | [INFO] [stderr] 789 | fn fun_params_match() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:857:9 [INFO] [stderr] | [INFO] [stderr] 857 | Quit, // no param [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:858:9 [INFO] [stderr] | [INFO] [stderr] 858 | Move { x: i32, y: i32 }, // struct-like [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Write` [INFO] [stderr] --> src/main.rs:859:9 [INFO] [stderr] | [INFO] [stderr] 859 | Write(String), // single-element tuple [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `rust_test` (bin "rust_test" test) generated 98 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.45s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_test-6bdd8d470c4eb838) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_test-3b476880c5c19004) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test test::calling_next_directly ... ok [INFO] [stdout] test test::call_with_different_values ... ok [INFO] [stdout] test test::post_state_classic_test ... ok [INFO] [stdout] test test::post_state_types_test ... ok [INFO] [stdout] test test::using_other_iterator_trait_methods ... ok [INFO] [stdout] test test::sends_an_over_75_perc ... ok [INFO] [stdout] test test::finds_in_size ... ok [INFO] [stdout] test test::test_boxes ... ok [INFO] [stdout] test test::derefs_test ... ok [INFO] [stdout] test test::test_tree ... ok [INFO] [stdout] test test::test_drop ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests rust_test [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "980d45f358e428dda6e891c6cdc53871dc1b1e88ae3e40aef702602398c5bb8b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "980d45f358e428dda6e891c6cdc53871dc1b1e88ae3e40aef702602398c5bb8b", kill_on_drop: false }` [INFO] [stdout] 980d45f358e428dda6e891c6cdc53871dc1b1e88ae3e40aef702602398c5bb8b