[INFO] cloning repository https://github.com/teatang/rust-learning [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teatang/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteatang%2Frust-learning", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteatang%2Frust-learning'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b14991f3402cece7f39ab5ba0614b0f7baa92d31 [INFO] checking teatang/rust-learning against 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3 for pr-160235-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteatang%2Frust-learning" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/teatang/rust-learning [INFO] finished tweaking git repo https://github.com/teatang/rust-learning [INFO] tweaked toml for git repo https://github.com/teatang/rust-learning written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/teatang/rust-learning on toolchain 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/teatang/rust-learning already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31 [INFO] running `Command { std: "docker" "start" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.182 [INFO] [stderr] Checking smallvec v1.15.1 [INFO] [stderr] Compiling anyhow v1.0.102 [INFO] [stderr] Checking bytes v1.11.1 [INFO] [stderr] Checking pin-project-lite v0.2.17 [INFO] [stderr] Checking either v1.15.0 [INFO] [stderr] Compiling tokio-macros v2.6.1 [INFO] [stderr] Checking itertools v0.14.0 [INFO] [stderr] Checking errno v0.3.14 [INFO] [stderr] Checking parking_lot_core v0.9.12 [INFO] [stderr] Checking mio v1.1.1 [INFO] [stderr] Checking socket2 v0.6.2 [INFO] [stderr] Checking signal-hook-registry v1.4.8 [INFO] [stderr] Checking parking_lot v0.12.5 [INFO] [stderr] Checking tokio v1.50.0 [INFO] [stderr] Checking rust-learning v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `HashMap` [INFO] [stdout] --> src/collections.rs:5:24 [INFO] [stdout] | [INFO] [stdout] 5 | use std::collections::{HashMap, HashSet, VecDeque}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `advanced` [INFO] [stdout] --> src/modules.rs:69:7 [INFO] [stdout] | [INFO] [stdout] 69 | #[cfg(feature = "advanced")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: remove the condition [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = help: consider adding `advanced` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `advanced` [INFO] [stdout] --> src/modules.rs:88:11 [INFO] [stdout] | [INFO] [stdout] 88 | #[cfg(feature = "advanced")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: remove the condition [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = help: consider adding `advanced` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/variables.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/data_types.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `advanced` [INFO] [stdout] --> src/modules.rs:69:7 [INFO] [stdout] | [INFO] [stdout] 69 | #[cfg(feature = "advanced")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: remove the condition [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = help: consider adding `advanced` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition value: `advanced` [INFO] [stdout] --> src/modules.rs:88:11 [INFO] [stdout] | [INFO] [stdout] 88 | #[cfg(feature = "advanced")] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: remove the condition [INFO] [stdout] | [INFO] [stdout] = note: no expected values for `feature` [INFO] [stdout] = help: consider adding `advanced` as a feature in `Cargo.toml` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ownership.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | let mut s5 = String::from("hello"); [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/lifetimes.rs:84:16 [INFO] [stdout] | [INFO] [stdout] 84 | fn foo<'a, 'b>(x: &'a str, y: &'b str) -> &'b str { [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: function `add_with_return` is never used [INFO] [stdout] --> src/functions.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn add_with_return(a: i32, b: i32) -> 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: variants `Nickel`, `Dime`, and `Quarter` are never constructed [INFO] [stdout] --> src/control_flow.rs:123:5 [INFO] [stdout] | [INFO] [stdout] 121 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 122 | Penny, [INFO] [stdout] 123 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 124 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] 125 | Quarter, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `sign_in_count` is never read [INFO] [stdout] --> src/structs.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct User { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 11 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `User` 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: fields `1` and `2` are never read [INFO] [stdout] --> src/structs.rs:16:19 [INFO] [stdout] | [INFO] [stdout] 16 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `deactivate` is never used [INFO] [stdout] --> src/structs.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 25 | impl User { [INFO] [stdout] | --------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 41 | fn deactivate(&mut self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/structs.rs:58:8 [INFO] [stdout] | [INFO] [stdout] 57 | impl Color { [INFO] [stdout] | ---------- associated function in this implementation [INFO] [stdout] 58 | fn new(r: i32, g: i32, b: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `South`, `East`, and `West` are never constructed [INFO] [stdout] --> src/enums.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum Direction { [INFO] [stdout] | --------- variants in this enum [INFO] [stdout] 10 | North, [INFO] [stdout] 11 | South, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 12 | East, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | West, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Direction` 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: variant `Poor` is never constructed [INFO] [stdout] --> src/enums.rs:66:5 [INFO] [stdout] | [INFO] [stdout] 64 | enum Status { [INFO] [stdout] | ------ variant in this enum [INFO] [stdout] 65 | Rich, [INFO] [stdout] 66 | Poor, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Status` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/collections.rs:39:13 [INFO] [stdout] | [INFO] [stdout] 39 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 39 - Int(i32), [INFO] [stdout] 39 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/collections.rs:40:15 [INFO] [stdout] | [INFO] [stdout] 40 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 40 - Float(f64), [INFO] [stdout] 40 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/collections.rs:41:14 [INFO] [stdout] | [INFO] [stdout] 41 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 41 - Text(String), [INFO] [stdout] 41 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_file_contents` is never used [INFO] [stdout] --> src/error_handling.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn read_file_contents(path: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Custom` is never constructed [INFO] [stdout] --> src/error_handling.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 52 | enum MyError { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 55 | Custom(String), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Result` is never used [INFO] [stdout] --> src/generics.rs:43:6 [INFO] [stdout] | [INFO] [stdout] 43 | enum Result { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `x` and `y` are never used [INFO] [stdout] --> src/generics.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 49 | impl Point { [INFO] [stdout] | ---------------------- methods in this implementation [INFO] [stdout] 50 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 54 | fn y(&self) -> &U { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify` is never used [INFO] [stdout] --> src/generics.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn notify(item: &T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_impl` is never used [INFO] [stdout] --> src/generics.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn notify_impl(item: &impl crate::traits::Summary) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/traits.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 25 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 28 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 29 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Tweet` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/traits.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 47 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NewsArticle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound` is never used [INFO] [stdout] --> src/traits.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn notify_bound(item: &T) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_multiple` is never used [INFO] [stdout] --> src/traits.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn notify_multiple(item: &(impl Summary + fmt::Display)) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> src/traits.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function(t: T, u: U) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function_where` is never used [INFO] [stdout] --> src/traits.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn some_function_where(t: T, u: U) -> String [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_word` is never used [INFO] [stdout] --> src/lifetimes.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn first_word<'a>(s: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce_and_return_part` is never used [INFO] [stdout] --> src/lifetimes.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 44 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 50 | fn announce_and_return_part<'b>(&self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `GREETING` is never used [INFO] [stdout] --> src/lifetimes.rs:58:8 [INFO] [stdout] | [INFO] [stdout] 58 | static GREETING: &str = "Hello"; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `panic_macro` is never used [INFO] [stdout] --> src/stdlib.rs:29:4 [INFO] [stdout] | [INFO] [stdout] 29 | fn panic_macro() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `async_block_demo` is never used [INFO] [stdout] --> src/async_demo.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn async_block_demo() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stream_demo` is never used [INFO] [stdout] --> src/async_demo.rs:120:4 [INFO] [stdout] | [INFO] [stdout] 120 | fn stream_demo() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `boxed_async` is never used [INFO] [stdout] --> src/async_demo.rs:127:10 [INFO] [stdout] | [INFO] [stdout] 127 | async fn boxed_async() -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/variables.rs:45:21 [INFO] [stdout] | [INFO] [stdout] 45 | let mut y = 10; [INFO] [stdout] | ^^ this value is reassigned later and never used [INFO] [stdout] 46 | y = 20; [INFO] [stdout] | ------ `y` is overwritten here before the previous value is read [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` (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.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | let mut s5 = String::from("hello"); [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/lifetimes.rs:84:16 [INFO] [stdout] | [INFO] [stdout] 84 | fn foo<'a, 'b>(x: &'a str, y: &'b str) -> &'b str { [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: variants `Nickel` and `Quarter` are never constructed [INFO] [stdout] --> src/control_flow.rs:123:5 [INFO] [stdout] | [INFO] [stdout] 121 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 122 | Penny, [INFO] [stdout] 123 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 124 | Dime, [INFO] [stdout] 125 | Quarter, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `1` and `2` are never read [INFO] [stdout] --> src/structs.rs:16:19 [INFO] [stdout] | [INFO] [stdout] 16 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `East` and `West` are never constructed [INFO] [stdout] --> src/enums.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum Direction { [INFO] [stdout] | --------- variants in this enum [INFO] [stdout] ... [INFO] [stdout] 12 | East, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | West, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Direction` 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: field `0` is never read [INFO] [stdout] --> src/collections.rs:39:13 [INFO] [stdout] | [INFO] [stdout] 39 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 39 - Int(i32), [INFO] [stdout] 39 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/collections.rs:40:15 [INFO] [stdout] | [INFO] [stdout] 40 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 40 - Float(f64), [INFO] [stdout] 40 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/collections.rs:41:14 [INFO] [stdout] | [INFO] [stdout] 41 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 41 - Text(String), [INFO] [stdout] 41 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_file_contents` is never used [INFO] [stdout] --> src/error_handling.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn read_file_contents(path: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Custom` is never constructed [INFO] [stdout] --> src/error_handling.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 52 | enum MyError { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 55 | Custom(String), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify` is never used [INFO] [stdout] --> src/generics.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn notify(item: &T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_impl` is never used [INFO] [stdout] --> src/generics.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn notify_impl(item: &impl crate::traits::Summary) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/traits.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 25 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 28 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 29 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Tweet` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/traits.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 47 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NewsArticle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound` is never used [INFO] [stdout] --> src/traits.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn notify_bound(item: &T) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_multiple` is never used [INFO] [stdout] --> src/traits.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn notify_multiple(item: &(impl Summary + fmt::Display)) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> src/traits.rs:72:4 [INFO] [stdout] | [INFO] [stdout] 72 | fn some_function(t: T, u: U) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function_where` is never used [INFO] [stdout] --> src/traits.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn some_function_where(t: T, u: U) -> String [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce_and_return_part` is never used [INFO] [stdout] --> src/lifetimes.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 44 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 50 | fn announce_and_return_part<'b>(&self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static `GREETING` is never used [INFO] [stdout] --> src/lifetimes.rs:58:8 [INFO] [stdout] | [INFO] [stdout] 58 | static GREETING: &str = "Hello"; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `panic_macro` is never used [INFO] [stdout] --> src/stdlib.rs:29:4 [INFO] [stdout] | [INFO] [stdout] 29 | fn panic_macro() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `async_block_demo` is never used [INFO] [stdout] --> src/async_demo.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn async_block_demo() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `stream_demo` is never used [INFO] [stdout] --> src/async_demo.rs:120:4 [INFO] [stdout] | [INFO] [stdout] 120 | fn stream_demo() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `boxed_async` is never used [INFO] [stdout] --> src/async_demo.rs:127:10 [INFO] [stdout] | [INFO] [stdout] 127 | async fn boxed_async() -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: unused dependency `anyhow` [INFO] [stderr] --> Cargo.toml:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | anyhow = "1" [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `cargo::unused_dependencies` is set to `warn` by default [INFO] [stderr] help: consider removing the dependency on `anyhow` [INFO] [stderr] warning: unused dependency `itertools` [INFO] [stderr] --> Cargo.toml:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | itertools = "0.14" [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] help: consider removing the dependency on `itertools` [INFO] [stderr] warning: unused dependency `thiserror` [INFO] [stderr] --> Cargo.toml:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | thiserror = "2" [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] help: consider removing the dependency on `thiserror` [INFO] [stderr] warning: `rust-learning` (manifest) generated 3 warnings [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.57s [INFO] running `Command { std: "docker" "inspect" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31", kill_on_drop: false }` [INFO] [stdout] a828bb4829f2dd75d10a3d6215f6d6625582dd77f10ddebcf51b521df3e79e31