[INFO] cloning repository https://github.com/NeuropathyCC/rust_study [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NeuropathyCC/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeuropathyCC%2Frust_study", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeuropathyCC%2Frust_study'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 84e8399d17de81984db21f88198870b183d5feb0 [INFO] testing NeuropathyCC/rust_study against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628-retry-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeuropathyCC%2Frust_study" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/NeuropathyCC/rust_study [INFO] finished tweaking git repo https://github.com/NeuropathyCC/rust_study [INFO] tweaked toml for git repo https://github.com/NeuropathyCC/rust_study written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/NeuropathyCC/rust_study on toolchain 160e7623e8cbbf1feab2b6e2a24733a98c7bde9c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 27 packages to latest compatible versions [INFO] [stderr] Adding itertools v0.11.0 (available: v0.14.0) [INFO] [stderr] Adding mio v0.8.11 (available: v1.0.4) [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded proc-macro2 v1.0.101 [INFO] [stderr] Downloaded itertools v0.11.0 [INFO] [stderr] Downloaded cfg-if v1.0.3 [INFO] [stderr] Downloaded syn v2.0.106 [INFO] [stderr] Downloaded libc v0.2.175 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a609367cd2121377ae788b13a4d185f9a11f5fa6d1ab78bdfff5e47851bea8da [INFO] running `Command { std: "docker" "start" "-a" "a609367cd2121377ae788b13a4d185f9a11f5fa6d1ab78bdfff5e47851bea8da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a609367cd2121377ae788b13a4d185f9a11f5fa6d1ab78bdfff5e47851bea8da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a609367cd2121377ae788b13a4d185f9a11f5fa6d1ab78bdfff5e47851bea8da", kill_on_drop: false }` [INFO] [stdout] a609367cd2121377ae788b13a4d185f9a11f5fa6d1ab78bdfff5e47851bea8da [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c2eeca0a5366bca971bbd7fad644b860744ffa92505795ab17dd4d1976c003ae [INFO] running `Command { std: "docker" "start" "-a" "c2eeca0a5366bca971bbd7fad644b860744ffa92505795ab17dd4d1976c003ae", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.175 [INFO] [stderr] Compiling cfg-if v1.0.3 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Compiling itertools v0.11.0 [INFO] [stderr] Compiling getrandom v0.2.16 [INFO] [stderr] Compiling mio v0.8.11 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling rust_tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collection_demo/string.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let mut data = "initial content"; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/collection_demo/string.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | #[warn(unused_mut)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arr` [INFO] [stdout] --> src/collection_demo/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let arr = [1, 2, 3]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_arr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lifetime/lifetime.rs:16:25 [INFO] [stdout] | [INFO] [stdout] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ref2` [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ref2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let mut s = String::from("hello"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:24 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:30 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `spaces` [INFO] [stdout] --> src/variable/scala_type.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let spaces = spaces.len(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/main.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 17 | pub struct Guess { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 18 | value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/collection_demo/vector.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SpreadsheetCell` is never used [INFO] [stdout] --> src/collection_demo/vector.rs:41:6 [INFO] [stdout] | [INFO] [stdout] 41 | enum SpreadsheetCell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `move_str` is never used [INFO] [stdout] --> src/concurrency/sendsync.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn move_str() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `error` is never used [INFO] [stdout] --> src/error/error.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn error() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `counter` is never used [INFO] [stdout] --> src/function/closure.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn counter(x: i32) -> impl Fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closure` is never used [INFO] [stdout] --> src/function/closure.rs:114:8 [INFO] [stdout] | [INFO] [stdout] 114 | pub fn closure() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Any` is never used [INFO] [stdout] --> src/function/closure.rs:134:7 [INFO] [stdout] | [INFO] [stdout] 134 | trait Any { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `escape_closure` is never used [INFO] [stdout] --> src/function/closure.rs:175:8 [INFO] [stdout] | [INFO] [stdout] 175 | pub fn escape_closure() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `return_closure` is never used [INFO] [stdout] --> src/function/closure.rs:183:8 [INFO] [stdout] | [INFO] [stdout] 183 | pub fn return_closure() -> impl Fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `return_fn_once` is never used [INFO] [stdout] --> src/function/closure.rs:187:8 [INFO] [stdout] | [INFO] [stdout] 187 | pub fn return_fn_once() -> impl FnOnce(i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fib` is never used [INFO] [stdout] --> src/function/constfn.rs:1:10 [INFO] [stdout] | [INFO] [stdout] 1 | const fn fib(n: u128) -> u128 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `GA` is never used [INFO] [stdout] --> src/function/constfn.rs:11:11 [INFO] [stdout] | [INFO] [stdout] 11 | pub const GA: u128 = fib(101); [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `snake_case` is never used [INFO] [stdout] --> src/function/functions.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn snake_case() {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fn` is never used [INFO] [stdout] --> src/function/functions.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn r#fn() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `f` is never used [INFO] [stdout] --> src/function/functions.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn f() { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/function/functions.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `S` is never constructed [INFO] [stdout] --> src/function/functions.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | struct S { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fm` is never used [INFO] [stdout] --> src/function/functions.rs:37:4 [INFO] [stdout] | [INFO] [stdout] 37 | fn fm(ref _s: S) { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> src/function/functions.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn foo(_: i32) { // 忽略参数 [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `addsub` is never used [INFO] [stdout] --> src/function/functions.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn addsub(x: usize, y: usize) -> (usize, usize) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `square` is never used [INFO] [stdout] --> src/function/functions.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn square>(x: T, y: T) -> T { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/function/functions.rs:60:8 [INFO] [stdout] | [INFO] [stdout] 60 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `show` is never used [INFO] [stdout] --> src/function/functions.rs:66:8 [INFO] [stdout] | [INFO] [stdout] 65 | impl User { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] 66 | fn show(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `show_user` is never used [INFO] [stdout] --> src/function/functions.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn show_user() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `MathOp` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:2:6 [INFO] [stdout] | [INFO] [stdout] 2 | type MathOp = fn(i32, i32) -> i32; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `math` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn math(op: MathOp, a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hello` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn hello() {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `one_arg` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn one_arg(x: i32) {} [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `DoSth` is never used [INFO] [stdout] --> src/function/higherrankedlifetime.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | pub trait DoSth { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> src/function/higherrankedlifetime.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn foo(d: Box DoSth<&'a u32>>) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pick` is never constructed [INFO] [stdout] --> src/function/higherrankedlifetime.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | struct Pick { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `call` is never used [INFO] [stdout] --> src/function/higherrankedlifetime.rs:29:8 [INFO] [stdout] | [INFO] [stdout] 25 | / impl Pick [INFO] [stdout] 26 | | where [INFO] [stdout] 27 | | F: Fn(&(i32, i32)) -> &i32, [INFO] [stdout] | |_______________________________- method in this implementation [INFO] [stdout] 28 | { [INFO] [stdout] 29 | fn call<'a>(&'a self) -> &'a i32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `max` is never used [INFO] [stdout] --> src/function/higherrankedlifetime.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn max(data: &(i32, i32)) -> &i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `pick_test` is never used [INFO] [stdout] --> src/function/higherrankedlifetime.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | pub fn pick_test() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `InIterator` is never used [INFO] [stdout] --> src/function/iterator.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | trait InIterator { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `inner_iterator` is never used [INFO] [stdout] --> src/function/iterator.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn inner_iterator() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `out_iterator` is never used [INFO] [stdout] --> src/function/iterator.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn out_iterator() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Counter` is never constructed [INFO] [stdout] --> src/function/iterator.rs:48:8 [INFO] [stdout] | [INFO] [stdout] 48 | struct Counter { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MyVec` is never constructed [INFO] [stdout] --> src/function/iterator.rs:71:8 [INFO] [stdout] | [INFO] [stdout] 71 | struct MyVec(Vec); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `add` are never used [INFO] [stdout] --> src/function/iterator.rs:74:8 [INFO] [stdout] | [INFO] [stdout] 73 | impl MyVec { [INFO] [stdout] | ---------- associated items in this implementation [INFO] [stdout] 74 | fn new() -> MyVec { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 78 | fn add(&mut self, value: i32) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Step` is never constructed [INFO] [stdout] --> src/function/iterator.rs:97:12 [INFO] [stdout] | [INFO] [stdout] 97 | pub struct Step { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `ExtIteator` is never used [INFO] [stdout] --> src/function/iterator.rs:116:11 [INFO] [stdout] | [INFO] [stdout] 116 | pub trait ExtIteator: Iterator { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `guss` is never used [INFO] [stdout] --> src/guess_number/guess.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn guss() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_2` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_str` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn longest_str<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn longest<'a, 'b: 'a>(a: &'a str, b: &'b str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Foo` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:51:7 [INFO] [stdout] | [INFO] [stdout] 51 | trait Foo<'a> {} [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FooImpl` is never constructed [INFO] [stdout] --> src/lifetime/lifetime.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | struct FooImpl<'a> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fool` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn fool<'a>(s: &'a str) -> Box + 'a> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `empty` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | pub fn empty() {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_1` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn eg_1() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_2` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn eg_2() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_rc` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn eg_rc() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Foo` is never constructed [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct Foo { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:48:4 [INFO] [stdout] | [INFO] [stdout] 48 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `refcell` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn refcell() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `abs_all` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:81:4 [INFO] [stdout] | [INFO] [stdout] 81 | fn abs_all(v: &mut Cow<[i32]>) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cowref` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:89:4 [INFO] [stdout] | [INFO] [stdout] 89 | fn cowref() { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Book` is never constructed [INFO] [stdout] --> src/oop/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | struct Book<'a> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ColorString` is never constructed [INFO] [stdout] --> src/oop/color.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | pub struct ColorString { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Color` is never used [INFO] [stdout] --> src/oop/color.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Color { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `to_fg` and `to_bg` are never used [INFO] [stdout] --> src/oop/color.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 40 | impl Color { [INFO] [stdout] | ---------- methods in this implementation [INFO] [stdout] 41 | fn to_fg(&self) -> &str { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | fn to_bg(&self) -> &str { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Colorized` is never used [INFO] [stdout] --> src/oop/color.rs:58:11 [INFO] [stdout] | [INFO] [stdout] 58 | pub trait Colorized { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `compute_style` is never used [INFO] [stdout] --> src/oop/color.rs:162:12 [INFO] [stdout] | [INFO] [stdout] 161 | impl ColorString { [INFO] [stdout] | ---------------- method in this implementation [INFO] [stdout] 162 | pub fn compute_style(&self) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `PrintDrop` is never constructed [INFO] [stdout] --> src/oop/drop_order.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | pub struct PrintDrop(pub &'static str); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership` is never used [INFO] [stdout] --> src/ownership/ownership.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn ownership() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `string_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:65:4 [INFO] [stdout] | [INFO] [stdout] 65 | fn string_copy() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stack_only_data_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:79:4 [INFO] [stdout] | [INFO] [stdout] 79 | fn stack_only_data_copy() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_ownership` is never used [INFO] [stdout] --> src/ownership/ownership.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn takes_ownership(some_string: String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `makes_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:91:4 [INFO] [stdout] | [INFO] [stdout] 91 | fn makes_copy(some_integer: i32) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_length` is never used [INFO] [stdout] --> src/ownership/ownership.rs:96:4 [INFO] [stdout] | [INFO] [stdout] 96 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `no_dangle` is never used [INFO] [stdout] --> src/ownership/ownership.rs:109:8 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn no_dangle() -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IPAddrKind` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:14:6 [INFO] [stdout] | [INFO] [stdout] 14 | enum IPAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IPAddr` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | struct IPAddr { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:26:6 [INFO] [stdout] | [INFO] [stdout] 26 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `call` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:34:8 [INFO] [stdout] | [INFO] [stdout] 33 | impl Message { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] 34 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `QuitMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | struct QuitMesseage; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MoveMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 40 | struct MoveMesseage { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `WriteMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct WriteMesseage(String); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ChangeColorMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct ChangeColorMesseage(i32, i32, i32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `build_user` is never used [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn build_user(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `area`, `can_hold`, and `square` are never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Rectangle { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 8 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 12 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 16 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `area` is never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn area(rectangle: &Rectangle) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 10 | 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/trait_demo/conditionallyimpltrait.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 15 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 16 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Point` is never constructed [INFO] [stdout] --> src/trait_demo/generic.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `mixup` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 6 | impl Point { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 7 | fn mixup(self, other: Point) -> Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SinglePoint` is never constructed [INFO] [stdout] --> src/trait_demo/generic.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | struct SinglePoint { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `x` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl SinglePoint { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 21 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `distance_from_origin` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 26 | impl SinglePoint { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 27 | fn distance_from_origin(&self) -> f32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/largestfunction.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest` is never used [INFO] [stdout] --> src/trait_demo/largestfunction.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn largest(list: &[T]) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/lifetime.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/trait_demo/lifetime.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/trait_demo/structrefs.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/structrefs.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> src/trait_demo/structrefs.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Summary` is never used [INFO] [stdout] --> src/trait_demo/trait_demo.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | pub trait Summary { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `NewsArticle` is never constructed [INFO] [stdout] --> src/trait_demo/trait_demo.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct NewsArticle { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/trait_demo/trait_demo.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/trait_demo.rs:37:4 [INFO] [stdout] | [INFO] [stdout] 37 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Summary` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:4:11 [INFO] [stdout] | [INFO] [stdout] 4 | pub trait Summary { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/trait_demo/trait_two.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 40 | pub fn notify(item: impl Summary) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_actually` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn notify_actually(item: T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:4 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_summarized` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:65:4 [INFO] [stdout] | [INFO] [stdout] 65 | fn returns_summarized() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `compound_type` is never used [INFO] [stdout] --> src/variable/compound_type.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn compound_type() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `flow` is never used [INFO] [stdout] --> src/variable/control_flow.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn flow() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `range_with_rev` is never used [INFO] [stdout] --> src/variable/control_flow.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn range_with_rev() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_condition` is never used [INFO] [stdout] --> src/variable/control_flow.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn if_condition() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `condition` is never used [INFO] [stdout] --> src/variable/control_flow.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn condition() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_demo` is never used [INFO] [stdout] --> src/variable/control_flow.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn loop_demo() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_with_result` is never used [INFO] [stdout] --> src/variable/control_flow.rs:45:4 [INFO] [stdout] | [INFO] [stdout] 45 | fn loop_with_result() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `condition_loop_with_while` is never used [INFO] [stdout] --> src/variable/control_flow.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn condition_loop_with_while() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_with_for` is never used [INFO] [stdout] --> src/variable/control_flow.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn loop_with_for() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `float` is never used [INFO] [stdout] --> src/variable/float.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn float() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `match_result` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn match_result() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `UsState` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:21:6 [INFO] [stdout] | [INFO] [stdout] 21 | enum UsState { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Coin` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:28:6 [INFO] [stdout] | [INFO] [stdout] 28 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `value_in_cents` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:36:4 [INFO] [stdout] | [INFO] [stdout] 36 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `scala_type` is never used [INFO] [stdout] --> src/variable/scala_type.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn scala_type() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `String::as_str` that must be used [INFO] [stdout] --> src/lifetime/lifetime.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | result.as_str(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 18 | let _ = result.as_str(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.63s [INFO] running `Command { std: "docker" "inspect" "c2eeca0a5366bca971bbd7fad644b860744ffa92505795ab17dd4d1976c003ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2eeca0a5366bca971bbd7fad644b860744ffa92505795ab17dd4d1976c003ae", kill_on_drop: false }` [INFO] [stdout] c2eeca0a5366bca971bbd7fad644b860744ffa92505795ab17dd4d1976c003ae [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 41b43c670d38c304ca1810da8f9947cc0351db320196ae5352539ce8c796245b [INFO] running `Command { std: "docker" "start" "-a" "41b43c670d38c304ca1810da8f9947cc0351db320196ae5352539ce8c796245b", kill_on_drop: false }` [INFO] [stderr] Compiling rust_tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `iterator::ExtIteator` [INFO] [stdout] --> src/function/mod.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | use iterator::ExtIteator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/oop/mod.rs:59:18 [INFO] [stdout] | [INFO] [stdout] 59 | let t2 = (PrintDrop("a"), PrintDrop("b"), panic!()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------^ [INFO] [stdout] | | | [INFO] [stdout] | | any code following this expression is unreachable [INFO] [stdout] | unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/borrow/mod.rs:90:13 [INFO] [stdout] | [INFO] [stdout] 90 | fn p(x: X) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collection_demo/string.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let mut data = "initial content"; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/collection_demo/string.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | #[warn(unused_mut)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `arr` [INFO] [stdout] --> src/collection_demo/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let arr = [1, 2, 3]; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_arr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lifetime/lifetime.rs:16:25 [INFO] [stdout] | [INFO] [stdout] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ref2` [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:75:13 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ref2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/oop/mod.rs:51:13 [INFO] [stdout] | [INFO] [stdout] 51 | let x = PrintDrop("x"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/oop/mod.rs:52:13 [INFO] [stdout] | [INFO] [stdout] 52 | let y = PrintDrop("y"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t1` [INFO] [stdout] --> src/oop/mod.rs:58:13 [INFO] [stdout] | [INFO] [stdout] 58 | let t1 = (PrintDrop("x"), PrintDrop("y"), PrintDrop("z")); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_t1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t2` [INFO] [stdout] --> src/oop/mod.rs:59:13 [INFO] [stdout] | [INFO] [stdout] 59 | let t2 = (PrintDrop("a"), PrintDrop("b"), panic!()); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_t2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership/ownership.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let mut s = String::from("hello"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:24 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:30 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `spaces` [INFO] [stdout] --> src/variable/scala_type.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let spaces = spaces.len(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/borrow/mod.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | fn longest<'a, 'b: 'a>(a: &'a str, b: &'b str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/collection_demo/vector.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SpreadsheetCell` is never used [INFO] [stdout] --> src/collection_demo/vector.rs:41:6 [INFO] [stdout] | [INFO] [stdout] 41 | enum SpreadsheetCell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `move_str` is never used [INFO] [stdout] --> src/concurrency/sendsync.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn move_str() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `error` is never used [INFO] [stdout] --> src/error/error.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn error() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `counter` is never used [INFO] [stdout] --> src/function/closure.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn counter(x: i32) -> impl Fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Any` is never used [INFO] [stdout] --> src/function/closure.rs:134:7 [INFO] [stdout] | [INFO] [stdout] 134 | trait Any { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `snake_case` is never used [INFO] [stdout] --> src/function/functions.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn snake_case() {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fn` is never used [INFO] [stdout] --> src/function/functions.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn r#fn() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `f` is never used [INFO] [stdout] --> src/function/functions.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn f() { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/function/functions.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `S` is never constructed [INFO] [stdout] --> src/function/functions.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | struct S { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fm` is never used [INFO] [stdout] --> src/function/functions.rs:37:4 [INFO] [stdout] | [INFO] [stdout] 37 | fn fm(ref _s: S) { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> src/function/functions.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn foo(_: i32) { // 忽略参数 [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `addsub` is never used [INFO] [stdout] --> src/function/functions.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn addsub(x: usize, y: usize) -> (usize, usize) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `square` is never used [INFO] [stdout] --> src/function/functions.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn square>(x: T, y: T) -> T { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/function/functions.rs:60:8 [INFO] [stdout] | [INFO] [stdout] 60 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `show` is never used [INFO] [stdout] --> src/function/functions.rs:66:8 [INFO] [stdout] | [INFO] [stdout] 65 | impl User { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] 66 | fn show(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `show_user` is never used [INFO] [stdout] --> src/function/functions.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn show_user() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `MathOp` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:2:6 [INFO] [stdout] | [INFO] [stdout] 2 | type MathOp = fn(i32, i32) -> i32; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `math` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn math(op: MathOp, a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `hello` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn hello() {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `one_arg` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn one_arg(x: i32) {} [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/function/higherorderfunction.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MyVec` is never constructed [INFO] [stdout] --> src/function/iterator.rs:71:8 [INFO] [stdout] | [INFO] [stdout] 71 | struct MyVec(Vec); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `add` are never used [INFO] [stdout] --> src/function/iterator.rs:74:8 [INFO] [stdout] | [INFO] [stdout] 73 | impl MyVec { [INFO] [stdout] | ---------- associated items in this implementation [INFO] [stdout] 74 | fn new() -> MyVec { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 78 | fn add(&mut self, value: i32) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Step` is never constructed [INFO] [stdout] --> src/function/iterator.rs:97:12 [INFO] [stdout] | [INFO] [stdout] 97 | pub struct Step { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `ExtIteator` is never used [INFO] [stdout] --> src/function/iterator.rs:116:11 [INFO] [stdout] | [INFO] [stdout] 116 | pub trait ExtIteator: Iterator { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_2` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_str` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn longest_str<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn longest<'a, 'b: 'a>(a: &'a str, b: &'b str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Foo` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:51:7 [INFO] [stdout] | [INFO] [stdout] 51 | trait Foo<'a> {} [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FooImpl` is never constructed [INFO] [stdout] --> src/lifetime/lifetime.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | struct FooImpl<'a> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fool` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn fool<'a>(s: &'a str) -> Box + 'a> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `empty` is never used [INFO] [stdout] --> src/lifetime/lifetime.rs:82:8 [INFO] [stdout] | [INFO] [stdout] 82 | pub fn empty() {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_1` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn eg_1() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_2` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn eg_2() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eg_rc` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn eg_rc() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Foo` is never constructed [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct Foo { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:48:4 [INFO] [stdout] | [INFO] [stdout] 48 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `refcell` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn refcell() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `abs_all` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:81:4 [INFO] [stdout] | [INFO] [stdout] 81 | fn abs_all(v: &mut Cow<[i32]>) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cowref` is never used [INFO] [stdout] --> src/lifetime/smartptr_ownership.rs:89:4 [INFO] [stdout] | [INFO] [stdout] 89 | fn cowref() { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name`, `isbn`, and `version` are never read [INFO] [stdout] --> src/oop/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 16 | struct Book<'a> { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 17 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 18 | isbn: i32, [INFO] [stdout] | ^^^^ [INFO] [stdout] 19 | version: i32, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Book` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `red`, `blue`, `on_red`, and `on_yellow` are never used [INFO] [stdout] --> src/oop/color.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 58 | pub trait Colorized { [INFO] [stdout] | --------- methods in this trait [INFO] [stdout] 59 | fn red(self) -> ColorString; [INFO] [stdout] | ^^^ [INFO] [stdout] 60 | fn blue(self) -> ColorString; [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 63 | fn on_red(self) -> ColorString; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 64 | fn on_blue(self) -> ColorString; [INFO] [stdout] 65 | fn on_yellow(self) -> ColorString; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership` is never used [INFO] [stdout] --> src/ownership/ownership.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn ownership() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `string_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:65:4 [INFO] [stdout] | [INFO] [stdout] 65 | fn string_copy() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stack_only_data_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:79:4 [INFO] [stdout] | [INFO] [stdout] 79 | fn stack_only_data_copy() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_ownership` is never used [INFO] [stdout] --> src/ownership/ownership.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn takes_ownership(some_string: String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `makes_copy` is never used [INFO] [stdout] --> src/ownership/ownership.rs:91:4 [INFO] [stdout] | [INFO] [stdout] 91 | fn makes_copy(some_integer: i32) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_length` is never used [INFO] [stdout] --> src/ownership/ownership.rs:96:4 [INFO] [stdout] | [INFO] [stdout] 96 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IPAddrKind` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:14:6 [INFO] [stdout] | [INFO] [stdout] 14 | enum IPAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IPAddr` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | struct IPAddr { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:26:6 [INFO] [stdout] | [INFO] [stdout] 26 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `call` is never used [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:34:8 [INFO] [stdout] | [INFO] [stdout] 33 | impl Message { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] 34 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `QuitMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | struct QuitMesseage; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MoveMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 40 | struct MoveMesseage { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `WriteMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | struct WriteMesseage(String); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ChangeColorMesseage` is never constructed [INFO] [stdout] --> src/struct_and_enum/enum_demo.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | struct ChangeColorMesseage(i32, i32, i32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `build_user` is never used [INFO] [stdout] --> src/struct_and_enum/struct_demo.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn build_user(email: String, username: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `area`, `can_hold`, and `square` are never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 7 | impl Rectangle { [INFO] [stdout] | -------------- associated items in this implementation [INFO] [stdout] 8 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 12 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 16 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `area` is never used [INFO] [stdout] --> src/struct_and_enum/struct_example.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn area(rectangle: &Rectangle) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/trait_demo/conditionallyimpltrait.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 10 | 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/trait_demo/conditionallyimpltrait.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 15 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 16 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Point` is never constructed [INFO] [stdout] --> src/trait_demo/generic.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `mixup` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 6 | impl Point { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 7 | fn mixup(self, other: Point) -> Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SinglePoint` is never constructed [INFO] [stdout] --> src/trait_demo/generic.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | struct SinglePoint { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `x` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl SinglePoint { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] 21 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `distance_from_origin` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 26 | impl SinglePoint { [INFO] [stdout] | --------------------- method in this implementation [INFO] [stdout] 27 | fn distance_from_origin(&self) -> f32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/generic.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/largestfunction.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest` is never used [INFO] [stdout] --> src/trait_demo/largestfunction.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn largest(list: &[T]) -> T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/lifetime.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/trait_demo/lifetime.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/trait_demo/structrefs.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/structrefs.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> src/trait_demo/structrefs.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Summary` is never used [INFO] [stdout] --> src/trait_demo/trait_demo.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | pub trait Summary { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `NewsArticle` is never constructed [INFO] [stdout] --> src/trait_demo/trait_demo.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct NewsArticle { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/trait_demo/trait_demo.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/trait_demo.rs:37:4 [INFO] [stdout] | [INFO] [stdout] 37 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Summary` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:4:11 [INFO] [stdout] | [INFO] [stdout] 4 | pub trait Summary { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Tweet` is never constructed [INFO] [stdout] --> src/trait_demo/trait_two.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Tweet { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn main() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 40 | pub fn notify(item: impl Summary) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_actually` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:44:8 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn notify_actually(item: T) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:56:4 [INFO] [stdout] | [INFO] [stdout] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_summarized` is never used [INFO] [stdout] --> src/trait_demo/trait_two.rs:65:4 [INFO] [stdout] | [INFO] [stdout] 65 | fn returns_summarized() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `compound_type` is never used [INFO] [stdout] --> src/variable/compound_type.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn compound_type() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `flow` is never used [INFO] [stdout] --> src/variable/control_flow.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn flow() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `range_with_rev` is never used [INFO] [stdout] --> src/variable/control_flow.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn range_with_rev() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `if_condition` is never used [INFO] [stdout] --> src/variable/control_flow.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn if_condition() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `condition` is never used [INFO] [stdout] --> src/variable/control_flow.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn condition() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_demo` is never used [INFO] [stdout] --> src/variable/control_flow.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn loop_demo() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_with_result` is never used [INFO] [stdout] --> src/variable/control_flow.rs:45:4 [INFO] [stdout] | [INFO] [stdout] 45 | fn loop_with_result() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `condition_loop_with_while` is never used [INFO] [stdout] --> src/variable/control_flow.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn condition_loop_with_while() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `loop_with_for` is never used [INFO] [stdout] --> src/variable/control_flow.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn loop_with_for() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `float` is never used [INFO] [stdout] --> src/variable/float.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn float() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `match_result` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn match_result() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `UsState` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:21:6 [INFO] [stdout] | [INFO] [stdout] 21 | enum UsState { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Coin` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:28:6 [INFO] [stdout] | [INFO] [stdout] 28 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `value_in_cents` is never used [INFO] [stdout] --> src/variable/match_pattern.rs:36:4 [INFO] [stdout] | [INFO] [stdout] 36 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `scala_type` is never used [INFO] [stdout] --> src/variable/scala_type.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn scala_type() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique [INFO] [stdout] --> src/borrow/mod.rs:78:24 [INFO] [stdout] | [INFO] [stdout] 78 | println!("{}", f == p); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the address of the same function can vary between different codegen units [INFO] [stdout] = note: furthermore, different functions could have the same address after being merged together [INFO] [stdout] = note: for more information visit [INFO] [stdout] = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default [INFO] [stdout] help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint [INFO] [stdout] | [INFO] [stdout] 78 - println!("{}", f == p); [INFO] [stdout] 78 + println!("{}", std::ptr::fn_addr_eq(f, p)); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> src/borrow/mod.rs:101:12 [INFO] [stdout] | [INFO] [stdout] 101 | p(a.clone()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `A` does not implement `Clone`, so calling `clone` on `&A` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 101 - p(a.clone()); [INFO] [stdout] 101 + p(a); [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `A`, implement `Clone` for it [INFO] [stdout] | [INFO] [stdout] 89 + #[derive(Clone)] [INFO] [stdout] 90 | struct A; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/concurrency/mod.rs:24:65 [INFO] [stdout] | [INFO] [stdout] 24 | println!("{:?},{}", thread::current().id(), &V); [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)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stdout] help: use `&raw const` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 24 | println!("{:?},{}", thread::current().id(), &raw const V); [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/concurrency/mod.rs:38:65 [INFO] [stdout] | [INFO] [stdout] 38 | println!("{:?},{}", thread::current().id(), &V); [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] help: use `&raw const` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 38 | println!("{:?},{}", thread::current().id(), &raw const V); [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/concurrency/mod.rs:39:28 [INFO] [stdout] | [INFO] [stdout] 39 | return &V; [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] help: use `&raw const` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 39 | return &raw const V; [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static [INFO] [stdout] --> src/concurrency/mod.rs:45:69 [INFO] [stdout] | [INFO] [stdout] 45 | println!("main thread {:?},{}", thread::current().id(), &V); [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] help: use `&raw const` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 45 | println!("main thread {:?},{}", thread::current().id(), &raw const V); [INFO] [stdout] | +++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `String::as_str` that must be used [INFO] [stdout] --> src/lifetime/lifetime.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | result.as_str(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 18 | let _ = result.as_str(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s [INFO] running `Command { std: "docker" "inspect" "41b43c670d38c304ca1810da8f9947cc0351db320196ae5352539ce8c796245b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41b43c670d38c304ca1810da8f9947cc0351db320196ae5352539ce8c796245b", kill_on_drop: false }` [INFO] [stdout] 41b43c670d38c304ca1810da8f9947cc0351db320196ae5352539ce8c796245b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 95115d1c303171383c1a6dea488a75965834cee997899073318f2c779160a53c [INFO] running `Command { std: "docker" "start" "-a" "95115d1c303171383c1a6dea488a75965834cee997899073318f2c779160a53c", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `iterator::ExtIteator` [INFO] [stderr] --> src/function/mod.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | use iterator::ExtIteator; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/oop/mod.rs:59:18 [INFO] [stderr] | [INFO] [stderr] 59 | let t2 = (PrintDrop("a"), PrintDrop("b"), panic!()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------^ [INFO] [stderr] | | | [INFO] [stderr] | | any code following this expression is unreachable [INFO] [stderr] | unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/borrow/mod.rs:90:13 [INFO] [stderr] | [INFO] [stderr] 90 | fn p(x: X) { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/collection_demo/string.rs:4:9 [INFO] [stderr] | [INFO] [stderr] 4 | let mut data = "initial content"; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] note: the lint level is defined here [INFO] [stderr] --> src/collection_demo/string.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | #[warn(unused_mut)] [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `arr` [INFO] [stderr] --> src/collection_demo/vector.rs:2:9 [INFO] [stderr] | [INFO] [stderr] 2 | let arr = [1, 2, 3]; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_arr` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/lifetime/lifetime.rs:16:25 [INFO] [stderr] | [INFO] [stderr] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ref2` [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:75:13 [INFO] [stderr] | [INFO] [stderr] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_ref2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:75:9 [INFO] [stderr] | [INFO] [stderr] 75 | let mut ref2 = vec_ref.borrow_mut(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/oop/mod.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | let x = PrintDrop("x"); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/oop/mod.rs:52:13 [INFO] [stderr] | [INFO] [stderr] 52 | let y = PrintDrop("y"); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t1` [INFO] [stderr] --> src/oop/mod.rs:58:13 [INFO] [stderr] | [INFO] [stderr] 58 | let t1 = (PrintDrop("x"), PrintDrop("y"), PrintDrop("z")); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_t1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t2` [INFO] [stderr] --> src/oop/mod.rs:59:13 [INFO] [stderr] | [INFO] [stderr] 59 | let t2 = (PrintDrop("a"), PrintDrop("b"), panic!()); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_t2` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ownership/ownership.rs:43:9 [INFO] [stderr] | [INFO] [stderr] 43 | let mut s = String::from("hello"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/trait_demo/trait_two.rs:56:24 [INFO] [stderr] | [INFO] [stderr] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `u` [INFO] [stderr] --> src/trait_demo/trait_two.rs:56:30 [INFO] [stderr] | [INFO] [stderr] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `spaces` [INFO] [stderr] --> src/variable/scala_type.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let spaces = spaces.len(); [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces` [INFO] [stderr] [INFO] [stderr] warning: function `longest` is never used [INFO] [stderr] --> src/borrow/mod.rs:62:8 [INFO] [stderr] | [INFO] [stderr] 62 | fn longest<'a, 'b: 'a>(a: &'a str, b: &'b str) -> &'a str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/collection_demo/vector.rs:1:4 [INFO] [stderr] | [INFO] [stderr] 1 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum `SpreadsheetCell` is never used [INFO] [stderr] --> src/collection_demo/vector.rs:41:6 [INFO] [stderr] | [INFO] [stderr] 41 | enum SpreadsheetCell { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `move_str` is never used [INFO] [stderr] --> src/concurrency/sendsync.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn move_str() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `error` is never used [INFO] [stderr] --> src/error/error.rs:5:4 [INFO] [stderr] | [INFO] [stderr] 5 | fn error() { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `counter` is never used [INFO] [stderr] --> src/function/closure.rs:10:4 [INFO] [stderr] | [INFO] [stderr] 10 | fn counter(x: i32) -> impl Fn(i32) -> i32 { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait `Any` is never used [INFO] [stderr] --> src/function/closure.rs:134:7 [INFO] [stderr] | [INFO] [stderr] 134 | trait Any { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function `snake_case` is never used [INFO] [stderr] --> src/function/functions.rs:3:4 [INFO] [stderr] | [INFO] [stderr] 3 | fn snake_case() {} [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `fn` is never used [INFO] [stderr] --> src/function/functions.rs:4:4 [INFO] [stderr] | [INFO] [stderr] 4 | fn r#fn() {} [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `f` is never used [INFO] [stderr] --> src/function/functions.rs:8:4 [INFO] [stderr] | [INFO] [stderr] 8 | fn f() { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/function/functions.rs:12:4 [INFO] [stderr] | [INFO] [stderr] 12 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `S` is never constructed [INFO] [stderr] --> src/function/functions.rs:33:8 [INFO] [stderr] | [INFO] [stderr] 33 | struct S { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function `fm` is never used [INFO] [stderr] --> src/function/functions.rs:37:4 [INFO] [stderr] | [INFO] [stderr] 37 | fn fm(ref _s: S) { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function `foo` is never used [INFO] [stderr] --> src/function/functions.rs:41:4 [INFO] [stderr] | [INFO] [stderr] 41 | fn foo(_: i32) { // 忽略参数 [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function `addsub` is never used [INFO] [stderr] --> src/function/functions.rs:46:4 [INFO] [stderr] | [INFO] [stderr] 46 | fn addsub(x: usize, y: usize) -> (usize, usize) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `square` is never used [INFO] [stderr] --> src/function/functions.rs:52:4 [INFO] [stderr] | [INFO] [stderr] 52 | fn square>(x: T, y: T) -> T { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `User` is never constructed [INFO] [stderr] --> src/function/functions.rs:60:8 [INFO] [stderr] | [INFO] [stderr] 60 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `show` is never used [INFO] [stderr] --> src/function/functions.rs:66:8 [INFO] [stderr] | [INFO] [stderr] 65 | impl User { [INFO] [stderr] | --------- method in this implementation [INFO] [stderr] 66 | fn show(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `show_user` is never used [INFO] [stderr] --> src/function/functions.rs:72:4 [INFO] [stderr] | [INFO] [stderr] 72 | fn show_user() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: type alias `MathOp` is never used [INFO] [stderr] --> src/function/higherorderfunction.rs:2:6 [INFO] [stderr] | [INFO] [stderr] 2 | type MathOp = fn(i32, i32) -> i32; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `math` is never used [INFO] [stderr] --> src/function/higherorderfunction.rs:4:4 [INFO] [stderr] | [INFO] [stderr] 4 | fn math(op: MathOp, a: i32, b: i32) -> i32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `hello` is never used [INFO] [stderr] --> src/function/higherorderfunction.rs:9:4 [INFO] [stderr] | [INFO] [stderr] 9 | fn hello() {} [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `one_arg` is never used [INFO] [stderr] --> src/function/higherorderfunction.rs:11:4 [INFO] [stderr] | [INFO] [stderr] 11 | fn one_arg(x: i32) {} [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/function/higherorderfunction.rs:14:4 [INFO] [stderr] | [INFO] [stderr] 14 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `MyVec` is never constructed [INFO] [stderr] --> src/function/iterator.rs:71:8 [INFO] [stderr] | [INFO] [stderr] 71 | struct MyVec(Vec); [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated items `new` and `add` are never used [INFO] [stderr] --> src/function/iterator.rs:74:8 [INFO] [stderr] | [INFO] [stderr] 73 | impl MyVec { [INFO] [stderr] | ---------- associated items in this implementation [INFO] [stderr] 74 | fn new() -> MyVec { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 78 | fn add(&mut self, value: i32) { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Step` is never constructed [INFO] [stderr] --> src/function/iterator.rs:97:12 [INFO] [stderr] | [INFO] [stderr] 97 | pub struct Step { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait `ExtIteator` is never used [INFO] [stderr] --> src/function/iterator.rs:116:11 [INFO] [stderr] | [INFO] [stderr] 116 | pub trait ExtIteator: Iterator { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `eg_2` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:16:4 [INFO] [stderr] | [INFO] [stderr] 16 | fn eg_2<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `longest_str` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:23:4 [INFO] [stderr] | [INFO] [stderr] 23 | fn longest_str<'a>(a: &'a str, b: &'a str) -> &'a str { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `longest` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:32:4 [INFO] [stderr] | [INFO] [stderr] 32 | fn longest<'a, 'b: 'a>(a: &'a str, b: &'b str) -> &'a str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait `Foo` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:51:7 [INFO] [stderr] | [INFO] [stderr] 51 | trait Foo<'a> {} [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `FooImpl` is never constructed [INFO] [stderr] --> src/lifetime/lifetime.rs:52:8 [INFO] [stderr] | [INFO] [stderr] 52 | struct FooImpl<'a> { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `fool` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:58:4 [INFO] [stderr] | [INFO] [stderr] 58 | fn fool<'a>(s: &'a str) -> Box + 'a> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `empty` is never used [INFO] [stderr] --> src/lifetime/lifetime.rs:82:8 [INFO] [stderr] | [INFO] [stderr] 82 | pub fn empty() {} [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `eg_1` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:4:4 [INFO] [stderr] | [INFO] [stderr] 4 | fn eg_1() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `eg_2` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:12:4 [INFO] [stderr] | [INFO] [stderr] 12 | fn eg_2() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `eg_rc` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn eg_rc() { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Foo` is never constructed [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:44:8 [INFO] [stderr] | [INFO] [stderr] 44 | struct Foo { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:48:4 [INFO] [stderr] | [INFO] [stderr] 48 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `refcell` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:69:4 [INFO] [stderr] | [INFO] [stderr] 69 | fn refcell() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `abs_all` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:81:4 [INFO] [stderr] | [INFO] [stderr] 81 | fn abs_all(v: &mut Cow<[i32]>) { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `cowref` is never used [INFO] [stderr] --> src/lifetime/smartptr_ownership.rs:89:4 [INFO] [stderr] | [INFO] [stderr] 89 | fn cowref() { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: fields `name`, `isbn`, and `version` are never read [INFO] [stderr] --> src/oop/mod.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 16 | struct Book<'a> { [INFO] [stderr] | ---- fields in this struct [INFO] [stderr] 17 | name: &'a str, [INFO] [stderr] | ^^^^ [INFO] [stderr] 18 | isbn: i32, [INFO] [stderr] | ^^^^ [INFO] [stderr] 19 | version: i32, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `Book` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: methods `red`, `blue`, `on_red`, and `on_yellow` are never used [INFO] [stderr] --> src/oop/color.rs:59:8 [INFO] [stderr] | [INFO] [stderr] 58 | pub trait Colorized { [INFO] [stderr] | --------- methods in this trait [INFO] [stderr] 59 | fn red(self) -> ColorString; [INFO] [stderr] | ^^^ [INFO] [stderr] 60 | fn blue(self) -> ColorString; [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 63 | fn on_red(self) -> ColorString; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] 64 | fn on_blue(self) -> ColorString; [INFO] [stderr] 65 | fn on_yellow(self) -> ColorString; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `ownership` is never used [INFO] [stderr] --> src/ownership/ownership.rs:42:4 [INFO] [stderr] | [INFO] [stderr] 42 | fn ownership() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `string_copy` is never used [INFO] [stderr] --> src/ownership/ownership.rs:65:4 [INFO] [stderr] | [INFO] [stderr] 65 | fn string_copy() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `stack_only_data_copy` is never used [INFO] [stderr] --> src/ownership/ownership.rs:79:4 [INFO] [stderr] | [INFO] [stderr] 79 | fn stack_only_data_copy() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `takes_ownership` is never used [INFO] [stderr] --> src/ownership/ownership.rs:85:4 [INFO] [stderr] | [INFO] [stderr] 85 | fn takes_ownership(some_string: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `makes_copy` is never used [INFO] [stderr] --> src/ownership/ownership.rs:91:4 [INFO] [stderr] | [INFO] [stderr] 91 | fn makes_copy(some_integer: i32) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `calculate_length` is never used [INFO] [stderr] --> src/ownership/ownership.rs:96:4 [INFO] [stderr] | [INFO] [stderr] 96 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:1:4 [INFO] [stderr] | [INFO] [stderr] 1 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum `IPAddrKind` is never used [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:14:6 [INFO] [stderr] | [INFO] [stderr] 14 | enum IPAddrKind { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `IPAddr` is never constructed [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:20:8 [INFO] [stderr] | [INFO] [stderr] 20 | struct IPAddr { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum `Message` is never used [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:26:6 [INFO] [stderr] | [INFO] [stderr] 26 | enum Message { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `call` is never used [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:34:8 [INFO] [stderr] | [INFO] [stderr] 33 | impl Message { [INFO] [stderr] | ------------ method in this implementation [INFO] [stderr] 34 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `QuitMesseage` is never constructed [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:39:8 [INFO] [stderr] | [INFO] [stderr] 39 | struct QuitMesseage; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `MoveMesseage` is never constructed [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:40:8 [INFO] [stderr] | [INFO] [stderr] 40 | struct MoveMesseage { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `WriteMesseage` is never constructed [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:44:8 [INFO] [stderr] | [INFO] [stderr] 44 | struct WriteMesseage(String); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `ChangeColorMesseage` is never constructed [INFO] [stderr] --> src/struct_and_enum/enum_demo.rs:45:8 [INFO] [stderr] | [INFO] [stderr] 45 | struct ChangeColorMesseage(i32, i32, i32); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `User` is never constructed [INFO] [stderr] --> src/struct_and_enum/struct_demo.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/struct_and_enum/struct_demo.rs:8:4 [INFO] [stderr] | [INFO] [stderr] 8 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `build_user` is never used [INFO] [stderr] --> src/struct_and_enum/struct_demo.rs:19:4 [INFO] [stderr] | [INFO] [stderr] 19 | fn build_user(email: String, username: String) -> User { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Rectangle` is never constructed [INFO] [stderr] --> src/struct_and_enum/struct_example.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | struct Rectangle { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated items `area`, `can_hold`, and `square` are never used [INFO] [stderr] --> src/struct_and_enum/struct_example.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 7 | impl Rectangle { [INFO] [stderr] | -------------- associated items in this implementation [INFO] [stderr] 8 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 12 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 16 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/struct_and_enum/struct_example.rs:25:4 [INFO] [stderr] | [INFO] [stderr] 25 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `area` is never used [INFO] [stderr] --> src/struct_and_enum/struct_example.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn area(rectangle: &Rectangle) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/conditionallyimpltrait.rs:2:4 [INFO] [stderr] | [INFO] [stderr] 2 | fn main() {} [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Pair` is never constructed [INFO] [stderr] --> src/trait_demo/conditionallyimpltrait.rs:4:8 [INFO] [stderr] | [INFO] [stderr] 4 | struct Pair { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function `new` is never used [INFO] [stderr] --> src/trait_demo/conditionallyimpltrait.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 9 | impl Pair { [INFO] [stderr] | --------------- associated function in this implementation [INFO] [stderr] 10 | fn new(x: T, y: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: method `cmp_display` is never used [INFO] [stderr] --> src/trait_demo/conditionallyimpltrait.rs:16:8 [INFO] [stderr] | [INFO] [stderr] 15 | impl Pair { [INFO] [stderr] | ------------------------------------- method in this implementation [INFO] [stderr] 16 | fn cmp_display(&self) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Point` is never constructed [INFO] [stderr] --> src/trait_demo/generic.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | struct Point { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `mixup` is never used [INFO] [stderr] --> src/trait_demo/generic.rs:7:8 [INFO] [stderr] | [INFO] [stderr] 6 | impl Point { [INFO] [stderr] | ---------------------- method in this implementation [INFO] [stderr] 7 | fn mixup(self, other: Point) -> Point { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `SinglePoint` is never constructed [INFO] [stderr] --> src/trait_demo/generic.rs:15:8 [INFO] [stderr] | [INFO] [stderr] 15 | struct SinglePoint { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `x` is never used [INFO] [stderr] --> src/trait_demo/generic.rs:21:8 [INFO] [stderr] | [INFO] [stderr] 20 | impl SinglePoint { [INFO] [stderr] | ---------------------- method in this implementation [INFO] [stderr] 21 | fn x(&self) -> &T { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: method `distance_from_origin` is never used [INFO] [stderr] --> src/trait_demo/generic.rs:27:8 [INFO] [stderr] | [INFO] [stderr] 26 | impl SinglePoint { [INFO] [stderr] | --------------------- method in this implementation [INFO] [stderr] 27 | fn distance_from_origin(&self) -> f32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/generic.rs:32:4 [INFO] [stderr] | [INFO] [stderr] 32 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/largestfunction.rs:1:4 [INFO] [stderr] | [INFO] [stderr] 1 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `largest` is never used [INFO] [stderr] --> src/trait_demo/largestfunction.rs:13:4 [INFO] [stderr] | [INFO] [stderr] 13 | fn largest(list: &[T]) -> T { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/lifetime.rs:8:4 [INFO] [stderr] | [INFO] [stderr] 8 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `longest` is never used [INFO] [stderr] --> src/trait_demo/lifetime.rs:34:4 [INFO] [stderr] | [INFO] [stderr] 34 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `ImportantExcerpt` is never constructed [INFO] [stderr] --> src/trait_demo/structrefs.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | struct ImportantExcerpt<'a> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/structrefs.rs:6:4 [INFO] [stderr] | [INFO] [stderr] 6 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `longest_with_an_announcement` is never used [INFO] [stderr] --> src/trait_demo/structrefs.rs:18:4 [INFO] [stderr] | [INFO] [stderr] 18 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait `Summary` is never used [INFO] [stderr] --> src/trait_demo/trait_demo.rs:1:11 [INFO] [stderr] | [INFO] [stderr] 1 | pub trait Summary { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `NewsArticle` is never constructed [INFO] [stderr] --> src/trait_demo/trait_demo.rs:10:12 [INFO] [stderr] | [INFO] [stderr] 10 | pub struct NewsArticle { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Tweet` is never constructed [INFO] [stderr] --> src/trait_demo/trait_demo.rs:17:12 [INFO] [stderr] | [INFO] [stderr] 17 | pub struct Tweet { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/trait_demo.rs:37:4 [INFO] [stderr] | [INFO] [stderr] 37 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait `Summary` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:4:11 [INFO] [stderr] | [INFO] [stderr] 4 | pub trait Summary { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Tweet` is never constructed [INFO] [stderr] --> src/trait_demo/trait_two.rs:12:12 [INFO] [stderr] | [INFO] [stderr] 12 | pub struct Tweet { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `main` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:25:4 [INFO] [stderr] | [INFO] [stderr] 25 | fn main() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `notify` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:40:8 [INFO] [stderr] | [INFO] [stderr] 40 | pub fn notify(item: impl Summary) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `notify_actually` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:44:8 [INFO] [stderr] | [INFO] [stderr] 44 | pub fn notify_actually(item: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `some_function` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:56:4 [INFO] [stderr] | [INFO] [stderr] 56 | fn some_function(t: T, u: U) -> i32 [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `returns_summarized` is never used [INFO] [stderr] --> src/trait_demo/trait_two.rs:65:4 [INFO] [stderr] | [INFO] [stderr] 65 | fn returns_summarized() -> impl Summary { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `compound_type` is never used [INFO] [stderr] --> src/variable/compound_type.rs:4:4 [INFO] [stderr] | [INFO] [stderr] 4 | fn compound_type() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `flow` is never used [INFO] [stderr] --> src/variable/control_flow.rs:2:4 [INFO] [stderr] | [INFO] [stderr] 2 | fn flow() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `range_with_rev` is never used [INFO] [stderr] --> src/variable/control_flow.rs:8:4 [INFO] [stderr] | [INFO] [stderr] 8 | fn range_with_rev() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `if_condition` is never used [INFO] [stderr] --> src/variable/control_flow.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn if_condition() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `condition` is never used [INFO] [stderr] --> src/variable/control_flow.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn condition() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `loop_demo` is never used [INFO] [stderr] --> src/variable/control_flow.rs:38:4 [INFO] [stderr] | [INFO] [stderr] 38 | fn loop_demo() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `loop_with_result` is never used [INFO] [stderr] --> src/variable/control_flow.rs:45:4 [INFO] [stderr] | [INFO] [stderr] 45 | fn loop_with_result() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `condition_loop_with_while` is never used [INFO] [stderr] --> src/variable/control_flow.rs:58:4 [INFO] [stderr] | [INFO] [stderr] 58 | fn condition_loop_with_while() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `loop_with_for` is never used [INFO] [stderr] --> src/variable/control_flow.rs:70:4 [INFO] [stderr] | [INFO] [stderr] 70 | fn loop_with_for() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `float` is never used [INFO] [stderr] --> src/variable/float.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn float() { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `match_result` is never used [INFO] [stderr] --> src/variable/match_pattern.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | pub fn match_result() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum `UsState` is never used [INFO] [stderr] --> src/variable/match_pattern.rs:21:6 [INFO] [stderr] | [INFO] [stderr] 21 | enum UsState { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum `Coin` is never used [INFO] [stderr] --> src/variable/match_pattern.rs:28:6 [INFO] [stderr] | [INFO] [stderr] 28 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `value_in_cents` is never used [INFO] [stderr] --> src/variable/match_pattern.rs:36:4 [INFO] [stderr] | [INFO] [stderr] 36 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `scala_type` is never used [INFO] [stderr] --> src/variable/scala_type.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | pub fn scala_type() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique [INFO] [stderr] --> src/borrow/mod.rs:78:24 [INFO] [stderr] | [INFO] [stderr] 78 | println!("{}", f == p); [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: the address of the same function can vary between different codegen units [INFO] [stderr] = note: furthermore, different functions could have the same address after being merged together [INFO] [stderr] = note: for more information visit [INFO] [stderr] = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default [INFO] [stderr] help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint [INFO] [stderr] | [INFO] [stderr] 78 - println!("{}", f == p); [INFO] [stderr] 78 + println!("{}", std::ptr::fn_addr_eq(f, p)); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stderr] --> src/borrow/mod.rs:101:12 [INFO] [stderr] | [INFO] [stderr] 101 | p(a.clone()); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: the type `A` does not implement `Clone`, so calling `clone` on `&A` copies the reference, which does not do anything and can be removed [INFO] [stderr] = note: `#[warn(noop_method_call)]` on by default [INFO] [stderr] help: remove this redundant call [INFO] [stderr] | [INFO] [stderr] 101 - p(a.clone()); [INFO] [stderr] 101 + p(a); [INFO] [stderr] | [INFO] [stderr] help: if you meant to clone `A`, implement `Clone` for it [INFO] [stderr] | [INFO] [stderr] 89 + #[derive(Clone)] [INFO] [stderr] 90 | struct A; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/concurrency/mod.rs:24:65 [INFO] [stderr] | [INFO] [stderr] 24 | println!("{:?},{}", thread::current().id(), &V); [INFO] [stderr] | ^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = 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] [stderr] = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default [INFO] [stderr] help: use `&raw const` instead to create a raw pointer [INFO] [stderr] | [INFO] [stderr] 24 | println!("{:?},{}", thread::current().id(), &raw const V); [INFO] [stderr] | +++++++++ [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/concurrency/mod.rs:38:65 [INFO] [stderr] | [INFO] [stderr] 38 | println!("{:?},{}", thread::current().id(), &V); [INFO] [stderr] | ^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = 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] [stderr] help: use `&raw const` instead to create a raw pointer [INFO] [stderr] | [INFO] [stderr] 38 | println!("{:?},{}", thread::current().id(), &raw const V); [INFO] [stderr] | +++++++++ [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/concurrency/mod.rs:39:28 [INFO] [stderr] | [INFO] [stderr] 39 | return &V; [INFO] [stderr] | ^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = 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] [stderr] help: use `&raw const` instead to create a raw pointer [INFO] [stderr] | [INFO] [stderr] 39 | return &raw const V; [INFO] [stderr] | +++++++++ [INFO] [stderr] [INFO] [stderr] warning: creating a shared reference to mutable static [INFO] [stderr] --> src/concurrency/mod.rs:45:69 [INFO] [stderr] | [INFO] [stderr] 45 | println!("main thread {:?},{}", thread::current().id(), &V); [INFO] [stderr] | ^^ shared reference to mutable static [INFO] [stderr] | [INFO] [stderr] = note: for more information, see [INFO] [stderr] = 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] [stderr] help: use `&raw const` instead to create a raw pointer [INFO] [stderr] | [INFO] [stderr] 45 | println!("main thread {:?},{}", thread::current().id(), &raw const V); [INFO] [stderr] | +++++++++ [INFO] [stderr] [INFO] [stderr] warning: unused return value of `String::as_str` that must be used [INFO] [stderr] --> src/lifetime/lifetime.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | result.as_str(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 18 | let _ = result.as_str(); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `rust_tutorial` (bin "rust_tutorial" test) generated 133 warnings (run `cargo fix --bin "rust_tutorial" --tests` to apply 5 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_tutorial-164ceb3264f63a0b) [INFO] [stdout] [INFO] [stdout] running 29 tests [INFO] [stdout] test borrow::tests::auiz_13 ... ok [INFO] [stdout] test borrow::tests::early_boound ... ok [INFO] [stdout] test borrow::tests::replace ... ok [INFO] [stdout] test borrow::tests::test_mem ... ok [INFO] [stdout] test collection_demo::tests::string_add ... ok [INFO] [stdout] test collection_demo::tests::vec_prealloc ... ok [INFO] [stdout] test collection_demo::tests::string_ops ... ok [INFO] [stdout] test collection_demo::tests::zero_size ... ok [INFO] [stdout] test function::function_test::apply_step ... ok [INFO] [stdout] test function::function_test::closure ... ok [INFO] [stdout] test borrow::tests::borrow_fun ... ok [INFO] [stdout] test borrow::tests::compute ... ok [INFO] [stdout] test function::function_test::higher_ranked_lifetime ... ok [INFO] [stdout] test function::function_test::inner_iterator ... ok [INFO] [stdout] test concurrency::tests::thread_local ... ok [INFO] [stdout] test concurrency::tests::thread_build ... ok [INFO] [stdout] test function::function_test::outer_iterator ... ok [INFO] [stdout] test oop::tests::struct_update ... ok [INFO] [stdout] test test::it_works_with_result ... ignored [INFO] [stdout] test test::dangling ... ok [INFO] [stdout] test function::function_test::test_const_fn ... ok [INFO] [stdout] test function::function_test::fn_box ... ok [INFO] [stdout] test collection_demo::tests::string ... ok [INFO] [stdout] test oop::tests::color_console ... ok [INFO] [stdout] test oop::tests::drop ... FAILED [INFO] [stdout] test test::guess_new_test - should panic ... ok [INFO] [stdout] test concurrency::tests::test1 ... ok [INFO] [stdout] test concurrency::tests::park ... ok [INFO] [stderr] error: test failed, to rerun pass `--bin rust_tutorial` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/deps/rust_tutorial-164ceb3264f63a0b` (signal: 9, SIGKILL: kill) [INFO] running `Command { std: "docker" "inspect" "95115d1c303171383c1a6dea488a75965834cee997899073318f2c779160a53c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95115d1c303171383c1a6dea488a75965834cee997899073318f2c779160a53c", kill_on_drop: false }` [INFO] [stdout] 95115d1c303171383c1a6dea488a75965834cee997899073318f2c779160a53c