[INFO] cloning repository https://github.com/iftakharhusan/learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iftakharhusan/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiftakharhusan%2Flearn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiftakharhusan%2Flearn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a63178d2c240b11fb3961bd11de088d52d58d9ff [INFO] checking iftakharhusan/learn-rust against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiftakharhusan%2Flearn-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/iftakharhusan/learn-rust on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/iftakharhusan/learn-rust [INFO] finished tweaking git repo https://github.com/iftakharhusan/learn-rust [INFO] tweaked toml for git repo https://github.com/iftakharhusan/learn-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/iftakharhusan/learn-rust 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f5706dd387dd78b736f80e73c58cc8c0c1cbefd11ab055bb226097cb94c3d954 [INFO] running `Command { std: "docker" "start" "-a" "f5706dd387dd78b736f80e73c58cc8c0c1cbefd11ab055bb226097cb94c3d954", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f5706dd387dd78b736f80e73c58cc8c0c1cbefd11ab055bb226097cb94c3d954", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5706dd387dd78b736f80e73c58cc8c0c1cbefd11ab055bb226097cb94c3d954", kill_on_drop: false }` [INFO] [stdout] f5706dd387dd78b736f80e73c58cc8c0c1cbefd11ab055bb226097cb94c3d954 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 66b3035c93300f3bb48038652ea00bccabedd4e245476601f8fec456850caf6e [INFO] running `Command { std: "docker" "start" "-a" "66b3035c93300f3bb48038652ea00bccabedd4e245476601f8fec456850caf6e", kill_on_drop: false }` [INFO] [stderr] Checking activities v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `msg_hello` is never used [INFO] [stdout] --> src/bin/a38.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn msg_hello() -> &'static str { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `msg_thread` is never used [INFO] [stdout] --> src/bin/a38.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn msg_thread() -> &'static str { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `msg_excited` is never used [INFO] [stdout] --> src/bin/a38.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn msg_excited() -> &'static str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `crossbeam_channel` [INFO] [stdout] --> src/bin/a41.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | use crossbeam_channel::{unbounded, Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ use of undeclared crate or module `crossbeam_channel` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `ServicePriority` is never used [INFO] [stdout] --> src/bin/a29.rs:13:6 [INFO] [stdout] | [INFO] [stdout] 13 | enum ServicePriority { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Priority` is never used [INFO] [stdout] --> src/bin/a29.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | trait Priority { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantGuest` is never constructed [INFO] [stdout] --> src/bin/a29.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | struct ImportantGuest; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Guest` is never constructed [INFO] [stdout] --> src/bin/a29.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | struct Guest; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `User` is never constructed [INFO] [stdout] --> src/bin/a21.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct User { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `find_user` is never used [INFO] [stdout] --> src/bin/a21.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn find_user(name: &str) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Red` and `Blue` are never constructed [INFO] [stdout] --> src/bin/a12.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 19 | enum Color{ [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 20 | Red, [INFO] [stdout] | ^^^ [INFO] [stdout] 21 | Green, [INFO] [stdout] 22 | Blue [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Color` 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] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0432`. [INFO] [stdout] [INFO] [stderr] error: could not compile `activities` (bin "a41" test) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: constant `MOCK_DATA` is never used [INFO] [stdout] --> src/bin/a32.rs:13:7 [INFO] [stdout] | [INFO] [stdout] 13 | const MOCK_DATA: &'static str = include_str!("mock-data.csv"); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `thiserror` [INFO] [stdout] --> src/bin/a27.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use thiserror::Error; [INFO] [stdout] | ^^^^^^^^^ use of undeclared crate or module `thiserror` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/a23.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 11 | fn part_1() -> bool { [INFO] [stdout] | ---- expected `bool` because of return type [INFO] [stdout] ... [INFO] [stdout] 16 | maybe_access("admin") [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Option` [INFO] [stdout] | [INFO] [stdout] = note: expected type `bool` [INFO] [stdout] found enum `Option` [INFO] [stdout] help: use `Option::is_some` to test if the `Option` has a value [INFO] [stdout] | [INFO] [stdout] 16 | maybe_access("admin").is_some() [INFO] [stdout] | ++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/a23.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 26 | fn part_3() -> Access { [INFO] [stdout] | ------ expected `Access` because of return type [INFO] [stdout] ... [INFO] [stdout] 29 | maybe_access("Alice") [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ expected `Access`, found `Option` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Access` [INFO] [stdout] found enum `Option` [INFO] [stdout] help: consider using `Option::expect` to unwrap the `Option` value, panicking if the value is an `Option::None` [INFO] [stdout] | [INFO] [stdout] 29 | maybe_access("Alice").expect("REASON") [INFO] [stdout] | +++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Color` is never used [INFO] [stdout] --> src/bin/a28.rs:13:6 [INFO] [stdout] | [INFO] [stdout] 13 | enum Color { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `crossbeam_channel` [INFO] [stdout] --> src/bin/a39.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | use crossbeam_channel::{unbounded, Receiver}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ use of undeclared crate or module `crossbeam_channel` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/bin/a39.rs:25:19 [INFO] [stdout] | [INFO] [stdout] 25 | use std::thread::{self, JoinHandle}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `error` in this scope [INFO] [stdout] --> src/bin/a27.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | #[error("menu item not found")] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `error` in this scope [INFO] [stdout] --> src/bin/a27.rs:24:7 [INFO] [stdout] | [INFO] [stdout] 24 | #[error("divide by zero error")] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `activities` (bin "a23" test) due to 3 previous errors [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bin/a39.rs:38:56 [INFO] [stdout] | [INFO] [stdout] 38 | fn spawn_light_thread(receiver: Receiver) -> JoinHandle { [INFO] [stdout] | ------------------ ^^^^^^^^^^^^^^^^^^^^^^^ expected `JoinHandle`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] | [INFO] [stdout] = note: expected struct `JoinHandle` [INFO] [stdout] found unit type `()` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0432. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `longest` in this scope [INFO] [stdout] --> src/bin/a33.rs:14:20 [INFO] [stdout] | [INFO] [stdout] 14 | println!("{}", longest(short, long)) [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rgb` is never constructed [INFO] [stdout] --> src/bin/a37.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | struct Rgb(u8, u8, u8); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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 E0425`. [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `activities` (bin "a39") due to 3 previous errors; 1 warning emitted [INFO] [stdout] error[E0277]: `?` couldn't convert the error to `ProgramError` [INFO] [stdout] --> src/bin/a27.rs:47:23 [INFO] [stdout] | [INFO] [stdout] 45 | fn run(step: i32) -> Result<(), ProgramError> { [INFO] [stdout] | ------------------------ expected `ProgramError` because of this [INFO] [stdout] 46 | if step == 1 { [INFO] [stdout] 47 | pick_menu("4")?; [INFO] [stdout] | --------------^ the trait `From` is not implemented for `ProgramError`, which is required by `Result<(), ProgramError>: FromResidual>` [INFO] [stdout] | | [INFO] [stdout] | this can't be annotated with `?` because it has type `Result<_, MenuError>` [INFO] [stdout] | [INFO] [stdout] = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait [INFO] [stdout] = help: the following other types implement trait `FromResidual`: [INFO] [stdout] as FromResidual>> [INFO] [stdout] as FromResidual>> [INFO] [stdout] = note: required for `Result<(), ProgramError>` to implement `FromResidual>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `?` couldn't convert the error to `ProgramError` [INFO] [stdout] --> src/bin/a27.rs:49:21 [INFO] [stdout] | [INFO] [stdout] 45 | fn run(step: i32) -> Result<(), ProgramError> { [INFO] [stdout] | ------------------------ expected `ProgramError` because of this [INFO] [stdout] ... [INFO] [stdout] 49 | divide(1, 0)?; [INFO] [stdout] | ------------^ the trait `From` is not implemented for `ProgramError`, which is required by `Result<(), ProgramError>: FromResidual>` [INFO] [stdout] | | [INFO] [stdout] | this can't be annotated with `?` because it has type `Result<_, MathError>` [INFO] [stdout] | [INFO] [stdout] = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait [INFO] [stdout] = help: the following other types implement trait `FromResidual`: [INFO] [stdout] as FromResidual>> [INFO] [stdout] as FromResidual>> [INFO] [stdout] = note: required for `Result<(), ProgramError>` to implement `FromResidual>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `ProgramError` doesn't implement `Debug` [INFO] [stdout] --> src/bin/a27.rs:55:22 [INFO] [stdout] | [INFO] [stdout] 55 | println!("{:?}", run(1)); [INFO] [stdout] | ^^^^^^ `ProgramError` cannot be formatted using `{:?}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `Debug` is not implemented for `ProgramError`, which is required by `Result<(), ProgramError>: Debug` [INFO] [stdout] = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError` [INFO] [stdout] = help: the trait `Debug` is implemented for `Result` [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: consider annotating `ProgramError` with `#[derive(Debug)]` [INFO] [stdout] | [INFO] [stdout] 14 + #[derive(Debug)] [INFO] [stdout] 15 | enum ProgramError {} [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `activities` (bin "a33" test) due to 2 previous errors [INFO] [stdout] error[E0277]: `ProgramError` doesn't implement `Debug` [INFO] [stdout] --> src/bin/a27.rs:56:22 [INFO] [stdout] | [INFO] [stdout] 56 | println!("{:?}", run(2)); [INFO] [stdout] | ^^^^^^ `ProgramError` cannot be formatted using `{:?}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `Debug` is not implemented for `ProgramError`, which is required by `Result<(), ProgramError>: Debug` [INFO] [stdout] = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError` [INFO] [stdout] = help: the trait `Debug` is implemented for `Result` [INFO] [stdout] = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: consider annotating `ProgramError` with `#[derive(Debug)]` [INFO] [stdout] | [INFO] [stdout] 14 + #[derive(Debug)] [INFO] [stdout] 15 | enum ProgramError {} [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 7 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0432. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `activities` (bin "a27" test) due to 8 previous errors [INFO] running `Command { std: "docker" "inspect" "66b3035c93300f3bb48038652ea00bccabedd4e245476601f8fec456850caf6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66b3035c93300f3bb48038652ea00bccabedd4e245476601f8fec456850caf6e", kill_on_drop: false }` [INFO] [stdout] 66b3035c93300f3bb48038652ea00bccabedd4e245476601f8fec456850caf6e