[INFO] cloning repository https://github.com/Eduard-Voiculescu/rust-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Eduard-Voiculescu/rust-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEduard-Voiculescu%2Frust-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEduard-Voiculescu%2Frust-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d85463c796918b28a86d94da0e11b2ac6e11769
[INFO] checking Eduard-Voiculescu/rust-tutorial against master#b04bfb4aea99436a62f6a98056e805eb9b0629cc for pr-98835
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEduard-Voiculescu%2Frust-tutorial" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Eduard-Voiculescu/rust-tutorial on toolchain b04bfb4aea99436a62f6a98056e805eb9b0629cc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b04bfb4aea99436a62f6a98056e805eb9b0629cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Eduard-Voiculescu/rust-tutorial
[INFO] finished tweaking git repo https://github.com/Eduard-Voiculescu/rust-tutorial
[INFO] tweaked toml for git repo https://github.com/Eduard-Voiculescu/rust-tutorial written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Eduard-Voiculescu/rust-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b04bfb4aea99436a62f6a98056e805eb9b0629cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+b04bfb4aea99436a62f6a98056e805eb9b0629cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce719268a183f22e47e66a04b6bc0b538309e9e9e26cee53d6fe31972c0b63d3
[INFO] running `Command { std: "docker" "start" "-a" "ce719268a183f22e47e66a04b6bc0b538309e9e9e26cee53d6fe31972c0b63d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce719268a183f22e47e66a04b6bc0b538309e9e9e26cee53d6fe31972c0b63d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce719268a183f22e47e66a04b6bc0b538309e9e9e26cee53d6fe31972c0b63d3", kill_on_drop: false }`
[INFO] [stdout] ce719268a183f22e47e66a04b6bc0b538309e9e9e26cee53d6fe31972c0b63d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+b04bfb4aea99436a62f6a98056e805eb9b0629cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f609b1ae050c7fee3f28eafc2f3f102dfb9db8a74e736f85542f59150439e5d8
[INFO] running `Command { std: "docker" "start" "-a" "f609b1ae050c7fee3f28eafc2f3f102dfb9db8a74e736f85542f59150439e5d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking interators_closure v0.1.0 (/opt/rustwide/workdir/iterators_closure)
[INFO] [stderr]     Checking gui v0.1.0 (/opt/rustwide/workdir/gui)
[INFO] [stderr]     Checking generics v0.1.0 (/opt/rustwide/workdir/generics)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking smart_pointers v0.1.0 (/opt/rustwide/workdir/smart_pointers)
[INFO] [stderr]     Checking restaurant v0.1.0 (/opt/rustwide/workdir/restaurant)
[INFO] [stderr]     Checking blog v0.1.0 (/opt/rustwide/workdir/blog)
[INFO] [stderr]     Checking cargo-crates v0.1.0 (/opt/rustwide/workdir/cargo-crates)
[INFO] [stderr]     Checking advanced_features v0.1.0 (/opt/rustwide/workdir/advanced_features)
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]     Checking structs v0.1.0 (/opt/rustwide/workdir/structs)
[INFO] [stderr]     Checking error-handling v0.1.0 (/opt/rustwide/workdir/error-handling)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> iterators_closure/src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Infallible`
[INFO] [stdout]  --> iterators_closure/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::Infallible;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> generics/src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0207]: the type parameter `T` is not constrained by the impl trait, self type, or predicates
[INFO] [stdout]   --> gui/src/lib.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> Screen
[INFO] [stdout]    |      ^ unconstrained type parameter
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0207`.
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around function argument
[INFO] [stdout]   --> blog/src/lib.rs:58:18
[INFO] [stdout]    |
[INFO] [stdout] 58 |         Box::new({PendingReview {}})
[INFO] [stdout]    |                  ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 58 -         Box::new({PendingReview {}})
[INFO] [stdout] 58 +         Box::new(PendingReview {})
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gui` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `order1`
[INFO] [stdout]   --> restaurant/src/lib.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let order1 = back_of_house::Appetizer::Soup;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `order2`
[INFO] [stdout]   --> restaurant/src/lib.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let order2 = back_of_house::Appetizer::Salad;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_order2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn serve_order() {}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fix_incorrect_order` is never used
[INFO] [stdout]  --> restaurant/src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn fix_incorrect_order() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cook_order` is never used
[INFO] [stdout]   --> restaurant/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn cook_order() {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> restaurant/src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 15 |         pub toast: String,
[INFO] [stdout] 16 |         seasonal_fruit: String
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]   --> generics/src/lib.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> blog/src/lib.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> structs/src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let black = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `origin`
[INFO] [stdout]   --> structs/src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let origin = Point(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subject`
[INFO] [stdout]   --> structs/src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let subject = AlwaysEqual;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]   --> iterators_closure/src/lib.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `defining_and_instantiating_structs` is never used
[INFO] [stdout]   --> structs/src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn defining_and_instantiating_structs() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> iterators_closure/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[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] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> error-handling/src/main.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Read, ErrorKind};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]  --> adder/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        --------- fields in this struct
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> adder/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 14 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `can_hold` is never used
[INFO] [stdout]  --> adder/src/lib.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> error-handling/src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let f = File::open("hello.txt").unwrap_or_else(|error| {
[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] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> error-handling/src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] running `Command { std: "docker" "inspect" "f609b1ae050c7fee3f28eafc2f3f102dfb9db8a74e736f85542f59150439e5d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f609b1ae050c7fee3f28eafc2f3f102dfb9db8a74e736f85542f59150439e5d8", kill_on_drop: false }`
[INFO] [stdout] f609b1ae050c7fee3f28eafc2f3f102dfb9db8a74e736f85542f59150439e5d8