[INFO] updating cached repository EdenCao/rust_learning [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/EdenCao/rust_learning [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/EdenCao/rust_learning" "work/ex/clippy-test-run/sources/stable/gh/EdenCao/rust_learning"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/EdenCao/rust_learning'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/EdenCao/rust_learning" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/EdenCao/rust_learning"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/EdenCao/rust_learning'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 3b85aa524f292dd7b9939ed7d5de8b6456618f9f [INFO] sha for GitHub repo EdenCao/rust_learning: 3b85aa524f292dd7b9939ed7d5de8b6456618f9f [INFO] validating manifest of EdenCao/rust_learning on toolchain stable [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of EdenCao/rust_learning on toolchain stable+rustflags=-Dclippy::into_iter_on_array [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing EdenCao/rust_learning [INFO] finished frobbing EdenCao/rust_learning [INFO] frobbed toml for EdenCao/rust_learning written to work/ex/clippy-test-run/sources/stable/gh/EdenCao/rust_learning/Cargo.toml [INFO] started frobbing EdenCao/rust_learning [INFO] finished frobbing EdenCao/rust_learning [INFO] frobbed toml for EdenCao/rust_learning written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/EdenCao/rust_learning/Cargo.toml [INFO] crate EdenCao/rust_learning has a lockfile. skipping [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on the registry index [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] linting EdenCao/rust_learning against stable for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/EdenCao/rust_learning:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"` [INFO] [stdout] c845a3f1d17b35ddb91b5c1a53ea95fc1505e5488b207c5389bbd38f5909ed96 [INFO] running `"docker" "start" "-a" "c845a3f1d17b35ddb91b5c1a53ea95fc1505e5488b207c5389bbd38f5909ed96"` [INFO] [stderr] Checking rust_learning v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/type.rs:7:16 [INFO] [stderr] | [INFO] [stderr] 7 | let normal = 2147483647; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `2_147_483_647` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user2` [INFO] [stderr] --> src/struct.rs:14:7 [INFO] [stderr] | [INFO] [stderr] 14 | let user2 = User { [INFO] [stderr] | ^^^^^ help: consider using `_user2` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/struct.rs:20:7 [INFO] [stderr] | [INFO] [stderr] 20 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: consider using `_black` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `username` [INFO] [stderr] --> src/struct.rs:2:3 [INFO] [stderr] | [INFO] [stderr] 2 | username: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `email` [INFO] [stderr] --> src/struct.rs:3:3 [INFO] [stderr] | [INFO] [stderr] 3 | email: String, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `sign_in_count` [INFO] [stderr] --> src/struct.rs:4:3 [INFO] [stderr] | [INFO] [stderr] 4 | sign_in_count: u64, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `active` [INFO] [stderr] --> src/struct.rs:5:3 [INFO] [stderr] | [INFO] [stderr] 5 | active: bool [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user2` [INFO] [stderr] --> src/struct.rs:14:7 [INFO] [stderr] | [INFO] [stderr] 14 | let user2 = User { [INFO] [stderr] | ^^^^^ help: consider using `_user2` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/struct.rs:20:7 [INFO] [stderr] | [INFO] [stderr] 20 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: consider using `_black` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `username` [INFO] [stderr] --> src/struct.rs:2:3 [INFO] [stderr] | [INFO] [stderr] 2 | username: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `email` [INFO] [stderr] --> src/struct.rs:3:3 [INFO] [stderr] | [INFO] [stderr] 3 | email: String, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `sign_in_count` [INFO] [stderr] --> src/struct.rs:4:3 [INFO] [stderr] | [INFO] [stderr] 4 | sign_in_count: u64, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `active` [INFO] [stderr] --> src/struct.rs:5:3 [INFO] [stderr] | [INFO] [stderr] 5 | active: bool [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/slice.rs:2:7 [INFO] [stderr] | [INFO] [stderr] 2 | let mut s = String::from("hello world"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/type.rs:7:16 [INFO] [stderr] | [INFO] [stderr] 7 | let normal = 2147483647; [INFO] [stderr] | ^^^^^^^^^^ help: consider: `2_147_483_647` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: doc comment not used by rustdoc [INFO] [stderr] --> src/struct_ex.rs:17:3 [INFO] [stderr] | [INFO] [stderr] 17 | /// [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_doc_comments)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `integer` [INFO] [stderr] --> src/generics.rs:14:7 [INFO] [stderr] | [INFO] [stderr] 14 | let integer = Point { [INFO] [stderr] | ^^^^^^^ help: consider using `_integer` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/generics.rs:3:3 [INFO] [stderr] | [INFO] [stderr] 3 | y: T [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/enum.rs:20:7 [INFO] [stderr] | [INFO] [stderr] 20 | let six = IpAddrKind::V6; [INFO] [stderr] | ^^^ help: consider using `_six` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/enum.rs:27:7 [INFO] [stderr] | [INFO] [stderr] 27 | let home = IpAddr { [INFO] [stderr] | ^^^^ help: consider using `_home` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `op_type` [INFO] [stderr] --> src/enum.rs:35:10 [INFO] [stderr] | [INFO] [stderr] 35 | fn route(op_type: IpAddrKind) { } [INFO] [stderr] | ^^^^^^^ help: consider using `_op_type` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `kind` [INFO] [stderr] --> src/enum.rs:14:3 [INFO] [stderr] | [INFO] [stderr] 14 | kind: IpAddrKind, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `address` [INFO] [stderr] --> src/enum.rs:15:3 [INFO] [stderr] | [INFO] [stderr] 15 | address: String [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::rc::Rc` [INFO] [stderr] --> src/shared_mem.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::rc::Rc; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/match.rs:25:7 [INFO] [stderr] | [INFO] [stderr] 25 | let six = plus_one(five); [INFO] [stderr] | ^^^ help: consider using `_six` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/match.rs:26:7 [INFO] [stderr] | [INFO] [stderr] 26 | let none = plus_one(None); [INFO] [stderr] | ^^^^ help: consider using `_none` instead [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Penny` [INFO] [stderr] --> src/match.rs:2:3 [INFO] [stderr] | [INFO] [stderr] 2 | Penny, [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nickel` [INFO] [stderr] --> src/match.rs:3:3 [INFO] [stderr] | [INFO] [stderr] 3 | Nickel, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Dime` [INFO] [stderr] --> src/match.rs:4:3 [INFO] [stderr] | [INFO] [stderr] 4 | Dime, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/match.rs:10:3 [INFO] [stderr] | [INFO] [stderr] 10 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: doc comment not used by rustdoc [INFO] [stderr] --> src/struct_ex.rs:17:3 [INFO] [stderr] | [INFO] [stderr] 17 | /// [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_doc_comments)] on by default [INFO] [stderr] [INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do. [INFO] [stderr] --> src/ref.rs:9:24 [INFO] [stderr] | [INFO] [stderr] 9 | fn calculate_length(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^ help: change this to: `&str` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::ptr_arg)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg [INFO] [stderr] [INFO] [stderr] warning: this `else { if .. }` block can be collapsed [INFO] [stderr] --> src/closure.rs:61:12 [INFO] [stderr] | [INFO] [stderr] 61 | } else { [INFO] [stderr] | ____________^ [INFO] [stderr] 62 | | if random_number == 3 { [INFO] [stderr] 63 | | println!("Take a break tody! Remember to stay hydrated!"); [INFO] [stderr] 64 | | } else { [INFO] [stderr] ... | [INFO] [stderr] 69 | | } [INFO] [stderr] 70 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::collapsible_if)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if [INFO] [stderr] help: try [INFO] [stderr] | [INFO] [stderr] 61 | } else if random_number == 3 { [INFO] [stderr] 62 | println!("Take a break tody! Remember to stay hydrated!"); [INFO] [stderr] 63 | } else { [INFO] [stderr] 64 | println!( [INFO] [stderr] 65 | "Today, run for {} minutes!", [INFO] [stderr] 66 | expensive_result.value(intensity) [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/loop.rs:16:6 [INFO] [stderr] | [INFO] [stderr] 16 | number = number - 1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: replace it with: `number -= 1` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::assign_op_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/loop.rs:16:6 [INFO] [stderr] | [INFO] [stderr] 16 | number = number - 1; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: replace it with: `number -= 1` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::assign_op_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/multiple_thread.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/multiple_thread.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `post` [INFO] [stderr] --> src/blog.rs:30:25 [INFO] [stderr] | [INFO] [stderr] 30 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stderr] | ^^^^ help: consider using `_post` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Post` [INFO] [stderr] --> src/blog.rs:7:3 [INFO] [stderr] | [INFO] [stderr] 7 | / pub fn new() -> Post { [INFO] [stderr] 8 | | Post { [INFO] [stderr] 9 | | state: Some(Box::new(Draft {})), [INFO] [stderr] 10 | | content: String::new() [INFO] [stderr] 11 | | } [INFO] [stderr] 12 | | } [INFO] [stderr] | |___^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::new_without_default_derive)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 1 | #[derive(Default)] [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/enum.rs:20:7 [INFO] [stderr] | [INFO] [stderr] 20 | let six = IpAddrKind::V6; [INFO] [stderr] | ^^^ help: consider using `_six` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/enum.rs:27:7 [INFO] [stderr] | [INFO] [stderr] 27 | let home = IpAddr { [INFO] [stderr] | ^^^^ help: consider using `_home` instead [INFO] [stderr] [INFO] [stderr] warning: unused variable: `op_type` [INFO] [stderr] --> src/enum.rs:35:10 [INFO] [stderr] | [INFO] [stderr] 35 | fn route(op_type: IpAddrKind) { } [INFO] [stderr] | ^^^^^^^ help: consider using `_op_type` instead [INFO] [stderr] [INFO] [stderr] warning: field is never used: `kind` [INFO] [stderr] --> src/enum.rs:14:3 [INFO] [stderr] | [INFO] [stderr] 14 | kind: IpAddrKind, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `address` [INFO] [stderr] --> src/enum.rs:15:3 [INFO] [stderr] | [INFO] [stderr] 15 | address: String [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `query` [INFO] [stderr] --> src/read.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | query: String, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `post` [INFO] [stderr] --> src/blog.rs:30:25 [INFO] [stderr] | [INFO] [stderr] 30 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stderr] | ^^^^ help: consider using `_post` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `integer` [INFO] [stderr] --> src/generics.rs:14:7 [INFO] [stderr] | [INFO] [stderr] 14 | let integer = Point { [INFO] [stderr] | ^^^^^^^ help: consider using `_integer` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `y` [INFO] [stderr] --> src/generics.rs:3:3 [INFO] [stderr] | [INFO] [stderr] 3 | y: T [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: you should consider deriving a `Default` implementation for `Post` [INFO] [stderr] --> src/blog.rs:7:3 [INFO] [stderr] | [INFO] [stderr] 7 | / pub fn new() -> Post { [INFO] [stderr] 8 | | Post { [INFO] [stderr] 9 | | state: Some(Box::new(Draft {})), [INFO] [stderr] 10 | | content: String::new() [INFO] [stderr] 11 | | } [INFO] [stderr] 12 | | } [INFO] [stderr] | |___^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::new_without_default_derive)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive [INFO] [stderr] help: try this [INFO] [stderr] | [INFO] [stderr] 1 | #[derive(Default)] [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly. [INFO] [stderr] --> src/owner.rs:40:3 [INFO] [stderr] | [INFO] [stderr] 40 | some_string [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::let_and_return)] on by default [INFO] [stderr] note: this expression can be directly returned [INFO] [stderr] --> src/owner.rs:38:21 [INFO] [stderr] | [INFO] [stderr] 38 | let some_string = String::from("hello"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return [INFO] [stderr] [INFO] [stderr] warning: unused variable: `s6` [INFO] [stderr] --> src/owner.rs:19:7 [INFO] [stderr] | [INFO] [stderr] 19 | let s6 = s5; [INFO] [stderr] | ^^ help: consider using `_s6` instead [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `gives_ownership` [INFO] [stderr] --> src/owner.rs:37:1 [INFO] [stderr] | [INFO] [stderr] 37 | fn gives_ownership() -> String { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::rc::Rc` [INFO] [stderr] --> src/shared_mem.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::rc::Rc; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/slice.rs:2:7 [INFO] [stderr] | [INFO] [stderr] 2 | let mut s = String::from("hello world"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] error[E0601]: `main` function not found in crate `refcall` [INFO] [stderr] | [INFO] [stderr] = note: consider adding a `main` function to `src/refcall.rs` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0601`. [INFO] [stderr] error: Could not compile `rust_learning`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: this `else { if .. }` block can be collapsed [INFO] [stderr] --> src/closure.rs:61:12 [INFO] [stderr] | [INFO] [stderr] 61 | } else { [INFO] [stderr] | ____________^ [INFO] [stderr] 62 | | if random_number == 3 { [INFO] [stderr] 63 | | println!("Take a break tody! Remember to stay hydrated!"); [INFO] [stderr] 64 | | } else { [INFO] [stderr] ... | [INFO] [stderr] 69 | | } [INFO] [stderr] 70 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::collapsible_if)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if [INFO] [stderr] help: try [INFO] [stderr] | [INFO] [stderr] 61 | } else if random_number == 3 { [INFO] [stderr] 62 | println!("Take a break tody! Remember to stay hydrated!"); [INFO] [stderr] 63 | } else { [INFO] [stderr] 64 | println!( [INFO] [stderr] 65 | "Today, run for {} minutes!", [INFO] [stderr] 66 | expensive_result.value(intensity) [INFO] [stderr] ... [INFO] [stderr] [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "c845a3f1d17b35ddb91b5c1a53ea95fc1505e5488b207c5389bbd38f5909ed96"` [INFO] running `"docker" "rm" "-f" "c845a3f1d17b35ddb91b5c1a53ea95fc1505e5488b207c5389bbd38f5909ed96"` [INFO] [stdout] c845a3f1d17b35ddb91b5c1a53ea95fc1505e5488b207c5389bbd38f5909ed96