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[INFO] [stderr] Downloaded utf8_slice v1.0.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 83be031a9e6fa27f2db538e9d021dd20988aecbbfa079e856a9e525e1839e74e [INFO] running `Command { std: "docker" "start" "-a" "83be031a9e6fa27f2db538e9d021dd20988aecbbfa079e856a9e525e1839e74e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "83be031a9e6fa27f2db538e9d021dd20988aecbbfa079e856a9e525e1839e74e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83be031a9e6fa27f2db538e9d021dd20988aecbbfa079e856a9e525e1839e74e", kill_on_drop: false }` [INFO] [stdout] 83be031a9e6fa27f2db538e9d021dd20988aecbbfa079e856a9e525e1839e74e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0bd77f2dd7bf15e079f870f3cbe62d934b776c32851b2d132c572940a145efdb [INFO] running `Command { std: "docker" "start" "-a" "0bd77f2dd7bf15e079f870f3cbe62d934b776c32851b2d132c572940a145efdb", 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: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/pattern-match-match-iflet-7.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | if let Foo::Bar(i) = a { [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: 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)]` 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)]` 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)]` 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: unused variable: `p` [INFO] [stdout] --> src/bin/generics-traits-generics-4.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | let p = Point{x: 5, y : "hello".to_string()}; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_p` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/bin/generics-traits-generics-4.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 3 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 4 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] 5 | y: U, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_c` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn print_c(t: &'static dyn Display) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_d` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn print_d(t: &'static impl Display) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_g` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn print_g(t: &'static String) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/pattern-match-match-iflet-7.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | if let Foo::Bar(i) = a { [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: fields `a` and `b` are never read [INFO] [stdout] --> src/bin/lifetime-static-2.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | struct Config { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 3 | a: String, [INFO] [stdout] | ^ [INFO] [stdout] 4 | b: String, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static variable `config` should have an upper case name [INFO] [stdout] --> src/bin/lifetime-static-2.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | static mut config: Option<&mut Config> = None; [INFO] [stdout] | ^^^^^^ help: convert the identifier to upper case: `CONFIG` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/bin/lifetime-static-2.rs:23:25 [INFO] [stdout] | [INFO] [stdout] 23 | println!("{:?}",config) [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_c` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn print_c(t: &'static dyn Display) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_d` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn print_d(t: &'static impl Display) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_g` is never used [INFO] [stdout] --> src/bin/lifetime-static-6.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn print_g(t: &'static String) { [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: unused variable: `name` [INFO] [stdout] --> src/bin/flow-control-4.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | for name in &names { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/bin/flow-control-4.rs:13:7 [INFO] [stdout] | [INFO] [stdout] 13 | for n in numbers { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/bin/lifetime-basic-5.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | let y: & i32 = &_x; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `a` and `b` are never read [INFO] [stdout] --> src/bin/lifetime-basic-7.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Example<'a, 'b> { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 8 | a: &'a u32, [INFO] [stdout] | ^ [INFO] [stdout] 9 | b: &'b NoCopyType [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Example` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i3` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:12:6 [INFO] [stdout] | [INFO] [stdout] 12 | let i3: u32 = 'a'.into(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:15:6 [INFO] [stdout] | [INFO] [stdout] 15 | let s: String = 'a'.into(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i3_` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:16:6 [INFO] [stdout] | [INFO] [stdout] 16 | let i3_: u32 = 'a' as u32 ; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_i3_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s_` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:18:6 [INFO] [stdout] | [INFO] [stdout] 18 | let s_: String = String::from('a'); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/bin/compound-types-tuple-1.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let t: (u8, u16, i64, &str, String) = (1u8, 2u16, 3i64, "hello", String::from(", world")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/bin/generics-traits-const-generics-3.rs:7:18 [INFO] [stdout] | [INFO] [stdout] 7 | fn check_size(val: T) [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `a` and `b` are never read [INFO] [stdout] --> src/bin/lifetime-basic-7.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Example<'a, 'b> { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 8 | a: &'a u32, [INFO] [stdout] | ^ [INFO] [stdout] 9 | b: &'b NoCopyType [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Example` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/ownership-borrowing-7.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | let mut s = String::from("hello"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i3` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:12:6 [INFO] [stdout] | [INFO] [stdout] 12 | let i3: u32 = 'a'.into(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_i3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:15:6 [INFO] [stdout] | [INFO] [stdout] 15 | let s: String = 'a'.into(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i3_` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:16:6 [INFO] [stdout] | [INFO] [stdout] 16 | let i3_: u32 = 'a' as u32 ; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_i3_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s_` [INFO] [stdout] --> src/bin/type-conversions-from-into-1.rs:18:6 [INFO] [stdout] | [INFO] [stdout] 18 | let s_: String = String::from('a'); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/bin/type-conversions-as-2.rs:8:7 [INFO] [stdout] | [INFO] [stdout] 8 | let v = 1000 as u8; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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)]` 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: field `0` is never read [INFO] [stdout] --> src/bin/compound-types-array-4.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | struct I64(i64); [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/compound-types-array-4.rs:4:13 [INFO] [stdout] | [INFO] [stdout] 4 | struct Char(char); [INFO] [stdout] | ---- ^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/compound-types-array-4.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | I64(i64), [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] 10 - I64(i64), [INFO] [stdout] 10 + I64(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/compound-types-array-4.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | Char(char), [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] 11 - Char(char), [INFO] [stdout] 11 + Char(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/bin/ownership-borrowing-8.rs:9:18 [INFO] [stdout] | [INFO] [stdout] 9 | fn borrow_object(s: &mut String) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/pattern-match-match-iflet-8.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | Qux(u32) [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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] 5 - Qux(u32) [INFO] [stdout] 5 + Qux(()) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Bar` and `Baz` are never constructed [INFO] [stdout] --> src/bin/pattern-match-match-iflet-8.rs:3:3 [INFO] [stdout] | [INFO] [stdout] 2 | enum Foo { [INFO] [stdout] | --- variants in this enum [INFO] [stdout] 3 | Bar, [INFO] [stdout] | ^^^ [INFO] [stdout] 4 | Baz, [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)]` 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)]` 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: unused variable: `arr0` [INFO] [stdout] --> src/bin/compound-types-array-2.rs:4:7 [INFO] [stdout] | [INFO] [stdout] 4 | let arr0 = [1, 2, 3]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_arr0` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `i` should have an upper case name [INFO] [stdout] --> src/bin/lifetime-static-5.rs:19:11 [INFO] [stdout] | [INFO] [stdout] 19 | const i: i32 = 5; [INFO] [stdout] | ^ help: convert the identifier to upper case (notice the capitalization): `I` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_upper_case_globals)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/bin/ownership-borrowing-11.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> src/bin/ownership-borrowing-11.rs:6:7 [INFO] [stdout] | [INFO] [stdout] 6 | let r2 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/bin/compound-types-slice-1.rs:5:7 [INFO] [stdout] | [INFO] [stdout] 5 | let s1: &[i32] = &arr[0..2]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/bin/compound-types-slice-1.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | let s2: &str = "hello, world" as &str; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_option` is never used [INFO] [stdout] --> src/bin/basic-types-functions-4.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn get_option(tp: u8) -> Option { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: failed to write `/opt/rustwide/target/debug/.fingerprint/rust-learning-7cb89decf58e9510/invoked.timestamp` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] No space left on device (os error 28) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/compound_types_tuple_4-4a6b072179c9f1c4.d [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] failed to write `/opt/rustwide/target/debug/.fingerprint/rust-learning-4a6b072179c9f1c4/dep-test-bin-compound-types-tuple-4` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] No space left on device (os error 28) [INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaYBy2te" [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-learning` (bin "basic-types-functions-4" test); 1 warning emitted [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] No space left on device (os error 28) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] failed to parse process output: `/opt/rustwide/rustup-home/toolchains/9d28fe39763974a96d61232e96ac856735e4cdd6/bin/rustc --crate-name basic_types_functions_4 --edition=2021 src/bin/basic-types-functions-4.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=56e622faf2d61a5e -C extra-filename=-15a2533ec60ba25b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern utf8_slice=/opt/rustwide/target/debug/deps/libutf8_slice-08253a6ecf8af2c5.rmeta --cap-lints=forbid` (exit status: 1) [INFO] [stderr] error: could not compile `rust-learning` (bin "result-panic-result-3" test) due to 1 previous error [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/pattern-match-match-iflet-3.rs:7:15 [INFO] [stdout] | [INFO] [stdout] 7 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ----------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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] 7 - ChangeColor(i32, i32, i32), [INFO] [stdout] 7 + ChangeColor((), i32, i32), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Write` is never constructed [INFO] [stdout] --> src/bin/pattern-match-match-iflet-3.rs:6:3 [INFO] [stdout] | [INFO] [stdout] 3 | enum Message { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 6 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0bd77f2dd7bf15e079f870f3cbe62d934b776c32851b2d132c572940a145efdb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0bd77f2dd7bf15e079f870f3cbe62d934b776c32851b2d132c572940a145efdb", kill_on_drop: false }` [INFO] [stdout] 0bd77f2dd7bf15e079f870f3cbe62d934b776c32851b2d132c572940a145efdb