[INFO] cloning repository https://github.com/maxts0gt/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxts0gt/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxts0gt%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxts0gt%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 548fdc952b8b2e17b67d3f3acb221660d7c66c3e
[INFO] checking maxts0gt/rust-practice against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxts0gt%2Frust-practice" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxts0gt/rust-practice on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxts0gt/rust-practice
[INFO] finished tweaking git repo https://github.com/maxts0gt/rust-practice
[INFO] tweaked toml for git repo https://github.com/maxts0gt/rust-practice written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/maxts0gt/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7accdc26fb01aa4f8ffe85d04478c866a953f31d16e4a908a6e8212ff23dfcbf
[INFO] running `Command { std: "docker" "start" "-a" "7accdc26fb01aa4f8ffe85d04478c866a953f31d16e4a908a6e8212ff23dfcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7accdc26fb01aa4f8ffe85d04478c866a953f31d16e4a908a6e8212ff23dfcbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7accdc26fb01aa4f8ffe85d04478c866a953f31d16e4a908a6e8212ff23dfcbf", kill_on_drop: false }`
[INFO] [stdout] 7accdc26fb01aa4f8ffe85d04478c866a953f31d16e4a908a6e8212ff23dfcbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d669ac5ad23f5278e2a5f792d4d28ddeb16bfeeb3e16c26e11aaa7d3537e6d06
[INFO] running `Command { std: "docker" "start" "-a" "d669ac5ad23f5278e2a5f792d4d28ddeb16bfeeb3e16c26e11aaa7d3537e6d06", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking activities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Color`
[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] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/a24.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let data = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Americano`
[INFO] [stdout]   --> src/bin/a8.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Americano,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]   --> src/bin/a7.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]   --> src/bin/a7.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Blue,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Color`
[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] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Americano`
[INFO] [stdout]   --> src/bin/a8.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Americano,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] warning: function is never used: `clamp`
[INFO] [stdout]   --> src/bin/a22.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn clamp(n: i32, lower: i32, upper: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `div`
[INFO] [stdout]   --> src/bin/a22.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_user`
[INFO] [stdout]   --> src/bin/a21.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn find_user(name: &str) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `concat`
[INFO] [stdout]   --> src/bin/a22.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_user`
[INFO] [stdout]   --> src/bin/a21.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn find_user(name: &str) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `clamp`
[INFO] [stdout]   --> src/bin/a22.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn clamp(n: i32, lower: i32, upper: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `div`
[INFO] [stdout]   --> src/bin/a22.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `concat`
[INFO] [stdout]   --> src/bin/a22.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Black`
[INFO] [stdout]   --> src/bin/a12.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Black
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]   --> src/bin/a7.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Red,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Blue`
[INFO] [stdout]   --> src/bin/a7.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Blue,
[INFO] [stdout]    |     ^^^^
[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] error: cannot determine resolution for the derive macro `Error`
[INFO] [stdout]   --> src/bin/a27.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Debug, Error)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[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] error: cannot determine resolution for the derive macro `Error`
[INFO] [stdout]   --> src/bin/a27.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Debug, Error)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[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 determine resolution for the derive macro `Error`
[INFO] [stdout]   --> src/bin/a27.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, Error)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[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] [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 determine resolution for the derive macro `Error`
[INFO] [stdout]   --> src/bin/a27.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, Error)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[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] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/a24.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let data = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `structopt`
[INFO] [stdout]   --> src/bin/p2-example.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use structopt::StructOpt;
[INFO] [stdout]    |     ^^^^^^^^^ use of undeclared crate or module `structopt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `thiserror`
[INFO] [stdout]   --> src/bin/p2-example.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use thiserror::Error;
[INFO] [stdout]    |     ^^^^^^^^^ use of undeclared crate or module `thiserror`
[INFO] [stdout] 
[INFO] [stdout] 
[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<MenuError>` is not implemented for `ProgramError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, MenuError>>` for `Result<(), ProgramError>`
[INFO] [stdout] note: required by `from_residual`
[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 enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `bool`
[INFO] [stdout]               found enum `Option<Access>`
[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<MathError>` is not implemented for `ProgramError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, MathError>>` for `Result<(), ProgramError>`
[INFO] [stdout] note: required by `from_residual`
[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`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `ProgramError` doesn't implement `Debug`
[INFO] [stdout]   --> src/bin/a27.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |     println!("{:?}", run(2));
[INFO] [stdout]    |                      ^^^^^^ `ProgramError` cannot be formatted using `{:?}`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Debug` is not implemented for `ProgramError`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 enum `Access`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Access`
[INFO] [stdout]               found enum `Option<Access>`
[INFO] [stdout] 
[INFO] [stdout] 
[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<MenuError>` is not implemented for `ProgramError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, MenuError>>` for `Result<(), ProgramError>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 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] [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[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<MathError>` is not implemented for `ProgramError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, MathError>>` for `Result<(), ProgramError>`
[INFO] [stdout] note: required by `from_residual`
[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`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `activities` due to 3 previous errors
[INFO] [stdout] error[E0277]: `ProgramError` doesn't implement `Debug`
[INFO] [stdout]   --> src/bin/a27.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |     println!("{:?}", run(2));
[INFO] [stdout]    |                      ^^^^^^ `ProgramError` cannot be formatted using `{:?}`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Debug` is not implemented for `ProgramError`
[INFO] [stdout]    = note: add `#[derive(Debug)]` to `ProgramError` or manually `impl Debug for ProgramError`
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 9 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] [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 enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `bool`
[INFO] [stdout]               found enum `Option<Access>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Black`
[INFO] [stdout]   --> src/bin/a12.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Black
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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 enum `Access`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Access`
[INFO] [stdout]               found enum `Option<Access>`
[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[E0432]: unresolved import `structopt`
[INFO] [stdout]   --> src/bin/p2-example.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use structopt::StructOpt;
[INFO] [stdout]    |     ^^^^^^^^^ use of undeclared crate or module `structopt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `thiserror`
[INFO] [stdout]   --> src/bin/p2-example.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use thiserror::Error;
[INFO] [stdout]    |     ^^^^^^^^^ use of undeclared crate or module `thiserror`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Error`
[INFO] [stdout]    --> src/bin/p2-example.rs:123:10
[INFO] [stdout]     |
[INFO] [stdout] 123 | #[derive(Error, Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:125:7
[INFO] [stdout]     |
[INFO] [stdout] 125 |     #[error("id must be a number: {0}")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `from` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |     InvalidId(#[from] std::num::ParseIntError),
[INFO] [stdout]     |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:127:7
[INFO] [stdout]     |
[INFO] [stdout] 127 |     #[error("empty record")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:129:7
[INFO] [stdout]     |
[INFO] [stdout] 129 |     #[error("missing field: {0}")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `StructOpt`
[INFO] [stdout]    --> src/bin/p2-example.rs:258:10
[INFO] [stdout]     |
[INFO] [stdout] 258 | #[derive(StructOpt, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:259:3
[INFO] [stdout]     |
[INFO] [stdout] 259 | #[structopt(about = "project 2: contact manager")]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:261:7
[INFO] [stdout]     |
[INFO] [stdout] 261 |     #[structopt(short, parse(from_os_str), default_value = "p2_data.csv")]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:263:7
[INFO] [stdout]     |
[INFO] [stdout] 263 |     #[structopt(subcommand)]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:265:7
[INFO] [stdout]     |
[INFO] [stdout] 265 |     #[structopt(short, help = "verbose")]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `StructOpt`
[INFO] [stdout]    --> src/bin/p2-example.rs:269:10
[INFO] [stdout]     |
[INFO] [stdout] 269 | #[derive(StructOpt, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:273:11
[INFO] [stdout]     |
[INFO] [stdout] 273 |         #[structopt(short)]
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:279:11
[INFO] [stdout]     |
[INFO] [stdout] 279 |         #[structopt(short)]
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `ParseError`
[INFO] [stdout]    --> src/bin/p2-example.rs:149:48
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn parse_record(record: &str) -> Result<Record, ParseError> {
[INFO] [stdout]     |                                  -------------------------- expected `ParseError` because of this
[INFO] [stdout] ...
[INFO] [stdout] 149 |         Some(id) => i64::from_str_radix(id, 10)?,
[INFO] [stdout]     |                                                ^ the trait `From<ParseIntError>` is not implemented for `ParseError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, ParseIntError>>` for `Result<Record, ParseError>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `ParseError` doesn't implement `std::fmt::Display`
[INFO] [stdout]    --> src/bin/p2-example.rs:196:29
[INFO] [stdout]     |
[INFO] [stdout] 196 | ...                   e,
[INFO] [stdout]     |                       ^ `ParseError` cannot be formatted with the default formatter
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::fmt::Display` is not implemented for `ParseError`
[INFO] [stdout]     = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]     = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_args` found for struct `Opt` in the current scope
[INFO] [stdout]    --> src/bin/p2-example.rs:340:20
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct Opt {
[INFO] [stdout]     | ---------- function or associated item `from_args` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 340 |     let opt = Opt::from_args();
[INFO] [stdout]     |                    ^^^^^^^^^ function or associated item not found in `Opt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Error`
[INFO] [stdout]    --> src/bin/p2-example.rs:123:10
[INFO] [stdout]     |
[INFO] [stdout] 123 | #[derive(Error, Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:125:7
[INFO] [stdout]     |
[INFO] [stdout] 125 |     #[error("id must be a number: {0}")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `from` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |     InvalidId(#[from] std::num::ParseIntError),
[INFO] [stdout]     |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:127:7
[INFO] [stdout]     |
[INFO] [stdout] 127 |     #[error("empty record")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `error` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:129:7
[INFO] [stdout]     |
[INFO] [stdout] 129 |     #[error("missing field: {0}")]
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `StructOpt`
[INFO] [stdout]    --> src/bin/p2-example.rs:258:10
[INFO] [stdout]     |
[INFO] [stdout] 258 | #[derive(StructOpt, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:259:3
[INFO] [stdout]     |
[INFO] [stdout] 259 | #[structopt(about = "project 2: contact manager")]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:261:7
[INFO] [stdout]     |
[INFO] [stdout] 261 |     #[structopt(short, parse(from_os_str), default_value = "p2_data.csv")]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:263:7
[INFO] [stdout]     |
[INFO] [stdout] 263 |     #[structopt(subcommand)]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:265:7
[INFO] [stdout]     |
[INFO] [stdout] 265 |     #[structopt(short, help = "verbose")]
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `StructOpt`
[INFO] [stdout]    --> src/bin/p2-example.rs:269:10
[INFO] [stdout]     |
[INFO] [stdout] 269 | #[derive(StructOpt, Debug)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:273:11
[INFO] [stdout]     |
[INFO] [stdout] 273 |         #[structopt(short)]
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]    --> src/bin/p2-example.rs:279:11
[INFO] [stdout]     |
[INFO] [stdout] 279 |         #[structopt(short)]
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `ParseError`
[INFO] [stdout]    --> src/bin/p2-example.rs:149:48
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn parse_record(record: &str) -> Result<Record, ParseError> {
[INFO] [stdout]     |                                  -------------------------- expected `ParseError` because of this
[INFO] [stdout] ...
[INFO] [stdout] 149 |         Some(id) => i64::from_str_radix(id, 10)?,
[INFO] [stdout]     |                                                ^ the trait `From<ParseIntError>` is not implemented for `ParseError`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<Result<Infallible, ParseIntError>>` for `Result<Record, ParseError>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `ParseError` doesn't implement `std::fmt::Display`
[INFO] [stdout]    --> src/bin/p2-example.rs:196:29
[INFO] [stdout]     |
[INFO] [stdout] 196 | ...                   e,
[INFO] [stdout]     |                       ^ `ParseError` cannot be formatted with the default formatter
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::fmt::Display` is not implemented for `ParseError`
[INFO] [stdout]     = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]     = note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_args` found for struct `Opt` in the current scope
[INFO] [stdout]    --> src/bin/p2-example.rs:340:20
[INFO] [stdout]     |
[INFO] [stdout] 260 | struct Opt {
[INFO] [stdout]     | ---------- function or associated item `from_args` not found for this
[INFO] [stdout] ...
[INFO] [stdout] 340 |     let opt = Opt::from_args();
[INFO] [stdout]     |                    ^^^^^^^^^ function or associated item not found in `Opt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d669ac5ad23f5278e2a5f792d4d28ddeb16bfeeb3e16c26e11aaa7d3537e6d06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d669ac5ad23f5278e2a5f792d4d28ddeb16bfeeb3e16c26e11aaa7d3537e6d06", kill_on_drop: false }`
[INFO] [stdout] d669ac5ad23f5278e2a5f792d4d28ddeb16bfeeb3e16c26e11aaa7d3537e6d06
