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"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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c9557a20e5ef2e0e02c29a5fafd850d1b7cf1e4f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5a30080b5ab1f2c4052c603e00b96a4569f67259a7d345a2955742d80c9d7722 [INFO] running `Command { std: "docker" "start" "-a" "5a30080b5ab1f2c4052c603e00b96a4569f67259a7d345a2955742d80c9d7722", kill_on_drop: false }` [INFO] [stderr] Checking utf8_slice v1.0.0 [INFO] [stderr] Checking rust-learning v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `width` and `height` are never read [INFO] [stdout] --> src/bin/compound-types-struct-7.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Rectangle { [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] 5 | width: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 6 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` 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: struct `DoubleRef` is never constructed [INFO] [stdout] --> src/bin/lifetime-advance-1.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct DoubleRef<'a, 'b: 'a, T> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Color` is never constructed [INFO] [stdout] --> src/bin/compound-types-struct-3.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Color(i32, 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: unused variable: `name0` [INFO] [stdout] --> src/bin/compound-types-array-6.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let name0 = names.get(0).unwrap(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_name0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/basic-types-functions-5.rs:6:7 [INFO] [stdout] | [INFO] [stdout] 6 | let v = match b { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/compound-types-enum-4.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | Move { x: i32, y: i32 }, [INFO] [stdout] | ---- ^ ^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` 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 `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/compound-types-enum-4.rs:8:15 [INFO] [stdout] | [INFO] [stdout] 8 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ----------- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 8 - ChangeColor(i32, i32, i32), [INFO] [stdout] 8 + ChangeColor((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Write` is never constructed [INFO] [stdout] --> src/bin/compound-types-enum-4.rs:7:3 [INFO] [stdout] | [INFO] [stdout] 4 | enum Message { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 7 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/ownership-borrowing-3.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | let mut s = 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: `s` [INFO] [stdout] --> src/bin/ownership-borrowing-3.rs:9:18 [INFO] [stdout] | [INFO] [stdout] 9 | fn borrow_object(s: &String) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/bin/lifetime-advance-2.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/bin/generics-traits-traits-8.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 7 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 8 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce_and_return_part` is never used [INFO] [stdout] --> src/bin/lifetime-advance-2.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 6 | impl<'a: 'b, 'b> ImportantExcerpt<'a> { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 7 | fn announce_and_return_part(&'a self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Write`, and `ChangeColor` are never constructed [INFO] [stdout] --> src/bin/compound-types-enum-3.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 4 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 5 | Move { x: i32, y: i32 }, [INFO] [stdout] 6 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | ChangeColor(i32, 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: struct `Person` is never constructed [INFO] [stdout] --> src/bin/compound-types-struct-5.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Person { [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 `build_person` is never used [INFO] [stdout] --> src/bin/compound-types-struct-5.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn build_person(name: String, age: u8) -> Person { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c1` [INFO] [stdout] --> src/bin/type-conversions-as-1.rs:8:7 [INFO] [stdout] | [INFO] [stdout] 8 | let c1: char = decimal as u8 as char; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c2` [INFO] [stdout] --> src/bin/type-conversions-as-1.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | let c2 = integer as char; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_c2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `call_on_ref_zero` is never used [INFO] [stdout] --> src/bin/lifetime-advance-4.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn call_on_ref_zero(f: F) where for<'a> F: Fn(&'a 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: unused variable: `s` [INFO] [stdout] --> src/bin/ownership-borrowing-9.rs:11:18 [INFO] [stdout] | [INFO] [stdout] 11 | fn borrow_object(s: &String) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/compound-types-enum-5.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 8 | if let n = six { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `none` [INFO] [stdout] --> src/bin/compound-types-enum-5.rs:6:7 [INFO] [stdout] | [INFO] [stdout] 6 | let none = plus_one(None); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: you might have meant to pattern match on the similarly named variant `None` [INFO] [stdout] | [INFO] [stdout] 6 - let none = plus_one(None); [INFO] [stdout] 6 + let std::prelude::v1::None = plus_one(None); [INFO] [stdout] | [INFO] [stdout] help: if this is intentional, prefix it with an underscore [INFO] [stdout] | [INFO] [stdout] 6 | let _none = plus_one(None); [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `TrafficLight` is never constructed [INFO] [stdout] --> src/bin/method-3.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct TrafficLight { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `show_state` and `change_state` are never used [INFO] [stdout] --> src/bin/method-3.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 5 | impl TrafficLight { [INFO] [stdout] | ----------------- methods in this implementation [INFO] [stdout] 6 | // 使用 `Self` 填空 [INFO] [stdout] 7 | pub fn show_state(self: &Self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 12 | pub fn change_state(mut self) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `match_number` is never used [INFO] [stdout] --> src/bin/pattern-match-patterns-1.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn match_number(n: 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: unused variable: `arrays` [INFO] [stdout] --> src/bin/generics-traits-const-generics-1.rs:8:7 [INFO] [stdout] | [INFO] [stdout] 8 | let arrays = [ [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_arrays` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/bin/generics-traits-const-generics-1.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | struct Array { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 4 | data : [T; N] [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/compound-types-string-1.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | let s: &str = "hello, world"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt::Result` [INFO] [stdout] --> src/bin/crate-module-use-pub-1.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::Result; [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: `std::io::Result as IoResult` [INFO] [stdout] --> src/bin/crate-module-use-pub-1.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::Result as IoResult; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/bin/compound-types-string-8.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | let s1: &str = &s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `p` [INFO] [stdout] --> src/bin/compound-types-struct-1.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | let p = Person { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name`, `age`, and `hobby` are never read [INFO] [stdout] --> src/bin/compound-types-struct-1.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | struct Person { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 4 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 5 | age: u8, [INFO] [stdout] | ^^^ [INFO] [stdout] 6 | hobby: String [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name0` [INFO] [stdout] --> src/bin/compound-types-array-6.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let name0 = names.get(0).unwrap(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_name0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/bin/lifetime-basic-9.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `level` is never used [INFO] [stdout] --> src/bin/lifetime-basic-9.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 6 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] 7 | fn level(&'a self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::str::from_utf8` with an invalid literal always return an error [INFO] [stdout] --> src/bin/compound-types-string-10-1.rs:34:11 [INFO] [stdout] | [INFO] [stdout] 31 | let shift_jis = b"\x82\xe6\x82\xa8\x82\xb1\x82\xbb"; // "ようこそ" in SHIFT-JIS [INFO] [stdout] | ----------------------------------- the literal was valid UTF-8 up to the 0 bytes [INFO] [stdout] ... [INFO] [stdout] 34 | match str::from_utf8(shift_jis) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(invalid_from_utf8)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/bin/method-5.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `area` is never used [INFO] [stdout] --> src/bin/method-5.rs:9:6 [INFO] [stdout] | [INFO] [stdout] 8 | impl Rectangle { [INFO] [stdout] | -------------- method in this implementation [INFO] [stdout] 9 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `can_hold` is never used [INFO] [stdout] --> src/bin/method-5.rs:15:6 [INFO] [stdout] | [INFO] [stdout] 14 | impl Rectangle { [INFO] [stdout] | -------------- method in this implementation [INFO] [stdout] 15 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `msg1` [INFO] [stdout] --> src/bin/compound-types-enum-2.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | let msg1 = Message::Move{ x: 1, y: 1 }; // 使用x = 1, y = 2 来初始化 [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_msg1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `msg2` [INFO] [stdout] --> src/bin/compound-types-enum-2.rs:12:7 [INFO] [stdout] | [INFO] [stdout] 12 | let msg2 = Message::Write("hello, world!".to_string()); // 使用 "hello, world!" 来初始化 [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_msg2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/compound-types-enum-2.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | Move { x: i32, y: i32 }, [INFO] [stdout] | ---- ^ ^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/compound-types-enum-2.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | Write(String), [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [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] 6 - Write(String), [INFO] [stdout] 6 + Write(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit` and `ChangeColor` are never constructed [INFO] [stdout] --> src/bin/compound-types-enum-2.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 4 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 7 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/bin/lifetime-basic-3.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn longest<'a>(x: &'a str, y: &'a 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] error[E0001]: `-Znext-solver=globally` and `generic_const_exprs` are incompatible, using them at the same time is not allowed [INFO] [stdout] --> src/bin/generics-traits-const-generics-3.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(generic_const_exprs)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: remove one of these features [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0001`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-learning` (bin "generics-traits-const-generics-3" test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: function `invalid_output` is never used [INFO] [stdout] --> src/bin/lifetime-basic-4.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn invalid_output<'a>(s: &'a String) -> &'a String { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/bin/flow-control-11.rs:16:7 [INFO] [stdout] | [INFO] [stdout] 16 | 'inner2: loop { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Write`, and `ChangeColor` are never constructed [INFO] [stdout] --> src/bin/compound-types-enum-3.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 4 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 5 | Move { x: i32, y: i32 }, [INFO] [stdout] 6 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | ChangeColor(i32, 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: unused variable: `arrays` [INFO] [stdout] --> src/bin/generics-traits-const-generics-1.rs:8:7 [INFO] [stdout] | [INFO] [stdout] 8 | let arrays = [ [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_arrays` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/bin/generics-traits-const-generics-1.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | struct Array { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 4 | data : [T; N] [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/bin/lifetime-advance-2.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce_and_return_part` is never used [INFO] [stdout] --> src/bin/lifetime-advance-2.rs:7:6 [INFO] [stdout] | [INFO] [stdout] 6 | impl<'a: 'b, 'b> ImportantExcerpt<'a> { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 7 | fn announce_and_return_part(&'a self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "5a30080b5ab1f2c4052c603e00b96a4569f67259a7d345a2955742d80c9d7722", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a30080b5ab1f2c4052c603e00b96a4569f67259a7d345a2955742d80c9d7722", kill_on_drop: false }` [INFO] [stdout] 5a30080b5ab1f2c4052c603e00b96a4569f67259a7d345a2955742d80c9d7722