[INFO] cloning repository https://github.com/BruceChar/LearnRustByExample [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BruceChar/LearnRustByExample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBruceChar%2FLearnRustByExample", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBruceChar%2FLearnRustByExample'... 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[INFO] validating manifest of git repo https://github.com/BruceChar/LearnRustByExample on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/BruceChar/LearnRustByExample [INFO] finished tweaking git repo https://github.com/BruceChar/LearnRustByExample [INFO] tweaked toml for git repo https://github.com/BruceChar/LearnRustByExample written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/BruceChar/LearnRustByExample 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 91f416b992f4e39b11124e8c21c0ddad220816dc622c61368448b740106d065b [INFO] running `Command { std: "docker" "start" "-a" "91f416b992f4e39b11124e8c21c0ddad220816dc622c61368448b740106d065b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "91f416b992f4e39b11124e8c21c0ddad220816dc622c61368448b740106d065b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91f416b992f4e39b11124e8c21c0ddad220816dc622c61368448b740106d065b", kill_on_drop: false }` [INFO] [stdout] 91f416b992f4e39b11124e8c21c0ddad220816dc622c61368448b740106d065b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f1f1ee8c9a355b134fb98f8ed05ed53d4d401129a2429e028c9059aa14da7101 [INFO] running `Command { std: "docker" "start" "-a" "f1f1ee8c9a355b134fb98f8ed05ed53d4d401129a2429e028c9059aa14da7101", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking another v0.1.0 (/opt/rustwide/workdir/src/another) [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking anolib v0.1.0 (/opt/rustwide/workdir/anolib) [INFO] [stderr] Checking mylib v0.1.0 (/opt/rustwide/workdir/mylib) [INFO] [stderr] Checking RustByExamples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking start v0.1.0 (/opt/rustwide/workdir/start) [INFO] [stdout] warning: unused label [INFO] [stdout] --> examples/loop.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | 'inner: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt::Display` [INFO] [stdout] --> examples/generic.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::Display; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Lines as iLines` [INFO] [stdout] --> examples/generic.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Lines as iLines, BufReader, BufRead}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::str::Lines` [INFO] [stdout] --> examples/generic.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::str::Lines; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::stdin` [INFO] [stdout] --> examples/struct.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io::stdin; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> examples/func.rs:9:27 [INFO] [stdout] | [INFO] [stdout] 9 | fn factory(x: i32) -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 9 | fn factory(x: i32) -> Box i32> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow` [INFO] [stdout] --> examples/smart_point.rs:24:19 [INFO] [stdout] | [INFO] [stdout] 24 | use std::borrow::{BorrowMut, Borrow}; [INFO] [stdout] | ^^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `DerefMut` and `Deref` [INFO] [stdout] --> examples/smart_point.rs:25:16 [INFO] [stdout] | [INFO] [stdout] 25 | use std::ops::{Deref, DerefMut}; [INFO] [stdout] | ^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `RefMut` [INFO] [stdout] --> examples/smart_point.rs:26:17 [INFO] [stdout] | [INFO] [stdout] 26 | use std::cell::{RefMut, RefCell}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lines` [INFO] [stdout] --> examples/generic.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let lines = "some\nniubi\nstring".lines(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `next` in this scope [INFO] [stdout] --> examples/box.rs:48:13 [INFO] [stdout] | [INFO] [stdout] 41 | next: &'a Node<'a>, [INFO] [stdout] | ---- a field by that name exists in `Self` [INFO] [stdout] ... [INFO] [stdout] 48 | next [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Unit` is never constructed [INFO] [stdout] --> examples/struct.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Unit; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `age` are never read [INFO] [stdout] --> examples/struct.rs:12:3 [INFO] [stdout] | [INFO] [stdout] 11 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 12 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | age: u8 [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `p` and `sex` are never read [INFO] [stdout] --> examples/struct.rs:18:3 [INFO] [stdout] | [INFO] [stdout] 17 | struct Man<'a> { [INFO] [stdout] | --- fields in this struct [INFO] [stdout] 18 | p: Person<'a>, [INFO] [stdout] | ^ [INFO] [stdout] 19 | sex: &'a str [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Man` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name`, `age`, and `subject` are never read [INFO] [stdout] --> examples/struct_inherit.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 43 | struct Teacher { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 44 | apple_eater: AppleEater, [INFO] [stdout] 45 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] 46 | age: u16, [INFO] [stdout] | ^^^ [INFO] [stdout] 47 | subject: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Student` is never constructed [INFO] [stdout] --> examples/struct_inherit.rs:50:8 [INFO] [stdout] | [INFO] [stdout] 50 | struct Student { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> examples/loop.rs:4:25 [INFO] [stdout] | [INFO] [stdout] 4 | v.iter().map(|x| x).collect(); [INFO] [stdout] | ^^^^^^^ cannot infer type of the type parameter `B` declared on the method `collect` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `_: FromIterator<&i32>` [INFO] [stdout] note: required by a bound in `collect` [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/iter/traits/iterator.rs:1996:5 [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 4 | v.iter().map(|x| x).collect::>(); [INFO] [stdout] | ++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `eat_granny_smith` is never used [INFO] [stdout] --> examples/struct_inherit.rs:20:16 [INFO] [stdout] | [INFO] [stdout] 7 | impl AppleEater { [INFO] [stdout] | --------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 20 | pub fn eat_granny_smith(&mut self) { self.granny_smiths += 1; } [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `eat_granny_smith` is never used [INFO] [stdout] --> examples/struct_inherit.rs:34:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub trait AsMutAppleEater: AsAppleEater { [INFO] [stdout] | --------------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 34 | fn eat_granny_smith(&mut self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> examples/file.rs:27:7 [INFO] [stdout] | [INFO] [stdout] 27 | let f = File::open("hello.txt").unwrap_or_else(|err| { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `putline` [INFO] [stdout] --> examples/box.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | let putline = || print!("\n"); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_putline` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/inter_mutability.rs:18:45 [INFO] [stdout] | [INFO] [stdout] 18 | let b = Cons(RefCell::new(4), Rc::clone(&a)); [INFO] [stdout] | --------- ^^ expected `&Rc`, found `&List` [INFO] [stdout] | | [INFO] [stdout] | arguments to this function are incorrect [INFO] [stdout] | [INFO] [stdout] = note: expected reference `&Rc` [INFO] [stdout] found reference `&List` [INFO] [stdout] note: method defined here [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/clone.rs:165:8 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> examples/box.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let n = Node::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `RustByExamples` (example "loop") due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0282]: type annotations needed for `HashMap<_, _>` [INFO] [stdout] --> examples/rc.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let m = HashMap::new(); [INFO] [stdout] | ^ -------------- type must be known at this point [INFO] [stdout] | [INFO] [stdout] help: consider giving `m` an explicit type, where the type for type parameter `K` is specified [INFO] [stdout] | [INFO] [stdout] 21 | let m: HashMap = HashMap::new(); [INFO] [stdout] | +++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/inter_mutability.rs:19:45 [INFO] [stdout] | [INFO] [stdout] 19 | let c = Cons(RefCell::new(3), Rc::clone(&a)); [INFO] [stdout] | --------- ^^ expected `&Rc`, found `&List` [INFO] [stdout] | | [INFO] [stdout] | arguments to this function are incorrect [INFO] [stdout] | [INFO] [stdout] = note: expected reference `&Rc` [INFO] [stdout] found reference `&List` [INFO] [stdout] note: method defined here [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/clone.rs:165:8 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0615]: attempted to take value of method `borrow_mut` on type `RefCell` [INFO] [stdout] --> examples/inter_mutability.rs:24:16 [INFO] [stdout] | [INFO] [stdout] 24 | *v.borrow_mut += 5; [INFO] [stdout] | ^^^^^^^^^^ method, not a field [INFO] [stdout] | [INFO] [stdout] = help: methods are immutable and cannot be assigned to [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0615. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] error[E0308]: arguments to this enum variant are incorrect [INFO] [stdout] --> examples/smart_point.rs:30:21 [INFO] [stdout] | [INFO] [stdout] 30 | let a = Rc::new(Cons(Rc::new(RefCell::new(1)), [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: expected `i32`, found `Rc>` [INFO] [stdout] --> examples/smart_point.rs:30:26 [INFO] [stdout] | [INFO] [stdout] 30 | let a = Rc::new(Cons(Rc::new(RefCell::new(1)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: expected type `i32` [INFO] [stdout] found struct `Rc>` [INFO] [stdout] note: expected `RefCell>`, found `Rc` [INFO] [stdout] --> examples/smart_point.rs:31:26 [INFO] [stdout] | [INFO] [stdout] 31 | Rc::new(Nil))); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] = note: expected struct `RefCell>` [INFO] [stdout] found struct `Rc<_>` [INFO] [stdout] note: tuple variant defined here [INFO] [stdout] --> examples/smart_point.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(i32, RefCell>), [INFO] [stdout] | ^^^^ [INFO] [stdout] help: call `Into::into` on this expression to convert `Rc` into `RefCell>` [INFO] [stdout] | [INFO] [stdout] 31 | Rc::new(Nil).into())); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: arguments to this enum variant are incorrect [INFO] [stdout] --> examples/smart_point.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | let mut b = Cons(Rc::new(RefCell::new(2)), Rc::clone(&a)); [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: expected `i32`, found `Rc>` [INFO] [stdout] --> examples/smart_point.rs:32:22 [INFO] [stdout] | [INFO] [stdout] 32 | let mut b = Cons(Rc::new(RefCell::new(2)), Rc::clone(&a)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: expected type `i32` [INFO] [stdout] found struct `Rc>` [INFO] [stdout] note: expected `RefCell>`, found `Rc` [INFO] [stdout] --> examples/smart_point.rs:32:48 [INFO] [stdout] | [INFO] [stdout] 32 | let mut b = Cons(Rc::new(RefCell::new(2)), Rc::clone(&a)); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] = note: expected struct `RefCell>` [INFO] [stdout] found struct `Rc<_>` [INFO] [stdout] note: tuple variant defined here [INFO] [stdout] --> examples/smart_point.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(i32, RefCell>), [INFO] [stdout] | ^^^^ [INFO] [stdout] help: call `Into::into` on this expression to convert `Rc` into `RefCell>` [INFO] [stdout] | [INFO] [stdout] 32 | let mut b = Cons(Rc::new(RefCell::new(2)), Rc::clone(&a).into()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: arguments to this enum variant are incorrect [INFO] [stdout] --> examples/smart_point.rs:34:14 [INFO] [stdout] | [INFO] [stdout] 34 | let c = Cons(Rc::new(RefCell::new(3)), a.clone()); // 只增加引用计数 [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: expected `i32`, found `Rc>` [INFO] [stdout] --> examples/smart_point.rs:34:19 [INFO] [stdout] | [INFO] [stdout] 34 | let c = Cons(Rc::new(RefCell::new(3)), a.clone()); // 只增加引用计数 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: expected type `i32` [INFO] [stdout] found struct `Rc>` [INFO] [stdout] note: expected `RefCell>`, found `Rc` [INFO] [stdout] --> examples/smart_point.rs:34:45 [INFO] [stdout] | [INFO] [stdout] 34 | let c = Cons(Rc::new(RefCell::new(3)), a.clone()); // 只增加引用计数 [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] = note: expected struct `RefCell>` [INFO] [stdout] found struct `Rc<_>` [INFO] [stdout] note: tuple variant defined here [INFO] [stdout] --> examples/smart_point.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Cons(i32, RefCell>), [INFO] [stdout] | ^^^^ [INFO] [stdout] help: call `Into::into` on this expression to convert `Rc` into `RefCell>` [INFO] [stdout] | [INFO] [stdout] 34 | let c = Cons(Rc::new(RefCell::new(3)), a.clone().into()); // 只增加引用计数 [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `RustByExamples` (example "box") due to 2 previous errors; 2 warnings emitted [INFO] [stderr] error: could not compile `RustByExamples` (example "inter_mutability") due to 4 previous errors [INFO] [stdout] error: aborting due to 3 previous errors; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] warning: named argument `wid` is not used by name [INFO] [stdout] --> examples/format.rs:26:71 [INFO] [stdout] | [INFO] [stdout] 26 | println!("宽度：\n{1:*^9}\n{0:#2$.3e}\n", 3.4567, 1.23456, wid=5); [INFO] [stdout] | -- ^^^ this named argument is referred to by position in formatting string [INFO] [stdout] | | [INFO] [stdout] | this formatting argument uses named argument `wid` by position [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(named_arguments_used_positionally)]` on by default [INFO] [stdout] help: use the named argument by name to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 26 | println!("宽度：\n{1:*^9}\n{0:#wid$.3e}\n", 3.4567, 1.23456, wid=5); [INFO] [stdout] | ~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `RustByExamples` (example "smart_point") due to 4 previous errors; 3 warnings emitted [INFO] [stdout] error[E0277]: cannot add a float to an integer [INFO] [stdout] --> examples/recursive_type.rs:35:31 [INFO] [stdout] | [INFO] [stdout] 35 | println!("{:?} {:?}", e, c+d); [INFO] [stdout] | ^ no implementation for `{integer} + {float}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `Add<{float}>` is not implemented for `{integer}`, which is required by `Cup<{integer}>: Add<_>` [INFO] [stdout] = help: the following other types implement trait `Add`: [INFO] [stdout] `&'a f128` implements `Add` [INFO] [stdout] `&'a f16` implements `Add` [INFO] [stdout] `&'a f32` implements `Add` [INFO] [stdout] `&'a f64` implements `Add` [INFO] [stdout] `&'a i128` implements `Add` [INFO] [stdout] `&'a i16` implements `Add` [INFO] [stdout] `&'a i32` implements `Add` [INFO] [stdout] `&'a i64` implements `Add` [INFO] [stdout] and 56 others [INFO] [stdout] note: required for `Cup<{integer}>` to implement `Add>` [INFO] [stdout] --> examples/recursive_type.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | impl Add> for Cup [INFO] [stdout] | ^^^^^^^^^^^ ^^^^^^ [INFO] [stdout] 20 | where A: Add [INFO] [stdout] | ------ unsatisfied trait bound introduced here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `UsState` is never used [INFO] [stdout] --> examples/match.rs:3:6 [INFO] [stdout] | [INFO] [stdout] 3 | enum UsState { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Coin` is never used [INFO] [stdout] --> examples/match.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `value_in_cents` is never used [INFO] [stdout] --> examples/match.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `other_bind` is never used [INFO] [stdout] --> examples/match.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn other_bind(coin: Coin) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `plus_one` is never used [INFO] [stdout] --> examples/match.rs:63:4 [INFO] [stdout] | [INFO] [stdout] 63 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_without_quarter` is never used [INFO] [stdout] --> examples/match.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn count_without_quarter(coins: &Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_while` is never used [INFO] [stdout] --> examples/match.rs:86:4 [INFO] [stdout] | [INFO] [stdout] 86 | fn count_while(coins: &mut Vec) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/format.rs:57:15 [INFO] [stdout] | [INFO] [stdout] 57 | struct Deep(Structure); [INFO] [stdout] | ---- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Deep` 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: fields `name` and `age` are never read [INFO] [stdout] --> examples/format.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 60 | struct Person<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 61 | name: &'a str, [INFO] [stdout] | ^^^^ [INFO] [stdout] 62 | age: u8 [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `RustByExamples` (example "recursive_type") due to 2 previous errors [INFO] [stderr] error: could not compile `RustByExamples` (example "rc") due to 2 previous errors [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f1f1ee8c9a355b134fb98f8ed05ed53d4d401129a2429e028c9059aa14da7101", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1f1ee8c9a355b134fb98f8ed05ed53d4d401129a2429e028c9059aa14da7101", kill_on_drop: false }` [INFO] [stdout] f1f1ee8c9a355b134fb98f8ed05ed53d4d401129a2429e028c9059aa14da7101