[INFO] cloning repository https://github.com/pluruel/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pluruel/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpluruel%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpluruel%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3651c2de39ce66ca3ad0cf4ec3f10efc10d62e13
[INFO] checking pluruel/rust_study against master#656ccbe796ff98def9b555c118e1620c5389e3b2 for pr-133502-24
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpluruel%2Frust_study" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pluruel/rust_study
[INFO] finished tweaking git repo https://github.com/pluruel/rust_study
[INFO] tweaked toml for git repo https://github.com/pluruel/rust_study written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pluruel/rust_study on toolchain 656ccbe796ff98def9b555c118e1620c5389e3b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pluruel/rust_study 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" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b
[INFO] running `Command { std: "docker" "start" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking rand_core v0.10.1
[INFO] [stderr]     Checking cpufeatures v0.3.0
[INFO] [stderr]     Checking restaurant v0.1.0 (/opt/rustwide/workdir/tutorial-7/restaurant)
[INFO] [stderr]     Checking tutorial-2 v0.1.0 (/opt/rustwide/workdir/tutorial-2)
[INFO] [stderr]     Checking tutorial-4 v0.1.0 (/opt/rustwide/workdir/tutorial-4)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tutorial-2/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let a: [i32; 5] = [1, 2, 3, 4, 5]; // add type like this style
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deliver_order2` is never used
[INFO] [stdout]  --> tutorial-7/restaurant/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn deliver_order2() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tutorial-8 v0.1.0 (/opt/rustwide/workdir/tutorial-8)
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> tutorial-7/restaurant/src/lib.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 36 |         pub toast: String,
[INFO] [stdout] 37 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deliver_order2` is never used
[INFO] [stdout]  --> tutorial-7/restaurant/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn deliver_order2() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> tutorial-7/restaurant/src/lib.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub struct Breakfast {
[INFO] [stdout]    |                --------- field in this struct
[INFO] [stdout] 36 |         pub toast: String,
[INFO] [stdout] 37 |         seasonal_fruit: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tutorial-7 v0.1.0 (/opt/rustwide/workdir/tutorial-7)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tutorial-2/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let a: [i32; 5] = [1, 2, 3, 4, 5]; // add type like this style
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `clear` found for reference `&str` in the current scope
[INFO] [stdout]   --> tutorial-4/src/main.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 |     hello.clear();
[INFO] [stdout]    |           ^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tutorial-4` (bin "tutorial-4") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]  --> tutorial-8/src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let v2 = vec![2, 3, 4];
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `answer`
[INFO] [stdout]   --> tutorial-8/src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let answer = &hello[0..1]; // ⚠️ 실행 시 panic. ASCII만 안전.
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_answer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> tutorial-8/src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let score = scores.get(&team_name).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::front_of_house`
[INFO] [stdout]   --> tutorial-7/src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use crate::front_of_house::hosting;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^ could not find `front_of_house` in the crate root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]  --> tutorial-7/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]  --> tutorial-7/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> tutorial-7/src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Result`
[INFO] [stdout]  --> tutorial-7/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Result as IoResult`
[INFO] [stdout]  --> tutorial-7/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::Result as IoResult; // Can use as
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `clear` found for reference `&str` in the current scope
[INFO] [stdout]   --> tutorial-4/src/main.rs:43:11
[INFO] [stdout]    |
[INFO] [stdout] 43 |     hello.clear();
[INFO] [stdout]    |           ^^^^^ method not found in `&str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::front_of_house`
[INFO] [stdout]   --> tutorial-7/src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use crate::front_of_house::hosting;
[INFO] [stdout]    |                ^^^^^^^^^^^^^^ could not find `front_of_house` in the crate root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]  --> tutorial-7/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]  --> tutorial-7/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> tutorial-7/src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Result`
[INFO] [stdout]  --> tutorial-7/src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Result as IoResult`
[INFO] [stdout]  --> tutorial-7/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::Result as IoResult; // Can use as
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tutorial-7` (bin "tutorial-7" test) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] error: could not compile `tutorial-4` (bin "tutorial-4" test) due to 1 previous error
[INFO] [stderr] error: could not compile `tutorial-7` (bin "tutorial-7") due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b", kill_on_drop: false }`
[INFO] [stdout] 9d34fb4f29be56bd38ba109ffa3b9e304d26ca8d0ffa4f3c8b57be120fcc929b
