[INFO] cloning repository https://github.com/takahiromitsui/Rust_Self_Learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takahiromitsui/Rust_Self_Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakahiromitsui%2FRust_Self_Learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakahiromitsui%2FRust_Self_Learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f98118a65df605158a92d43e3cfa683115a2ea77
[INFO] testing takahiromitsui/Rust_Self_Learning against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakahiromitsui%2FRust_Self_Learning" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/takahiromitsui/Rust_Self_Learning
[INFO] finished tweaking git repo https://github.com/takahiromitsui/Rust_Self_Learning
[INFO] tweaked toml for git repo https://github.com/takahiromitsui/Rust_Self_Learning written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/takahiromitsui/Rust_Self_Learning on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/takahiromitsui/Rust_Self_Learning 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90a37cbef5e50a2f8f6fdb0ef8f94eec27eed80f676a4cf102e16d86e5c20b1e
[INFO] running `Command { std: "docker" "start" "-a" "90a37cbef5e50a2f8f6fdb0ef8f94eec27eed80f676a4cf102e16d86e5c20b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90a37cbef5e50a2f8f6fdb0ef8f94eec27eed80f676a4cf102e16d86e5c20b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90a37cbef5e50a2f8f6fdb0ef8f94eec27eed80f676a4cf102e16d86e5c20b1e", kill_on_drop: false }`
[INFO] [stdout] 90a37cbef5e50a2f8f6fdb0ef8f94eec27eed80f676a4cf102e16d86e5c20b1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c44b799b22517571d19cec48f52af04220fed25b81cd0e986dd6830a046ca21
[INFO] running `Command { std: "docker" "start" "-a" "6c44b799b22517571d19cec48f52af04220fed25b81cd0e986dd6830a046ca21", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]    Compiling rust-self-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |         fn seat_at_table() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_order` is never used
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |         fn serve_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payment` is never used
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_payment() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> 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: unused imports: `File` and `Read`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::{self, File},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 4 |     io::{self, Read},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel`, `Dime`, and `Quarter` are never constructed
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 31 |     Penny,
[INFO] [stdout] 32 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     Quarter,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Warn`, `Info`, `Http`, `VERBOSE`, `Debug`, and `Silly` are never constructed
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum WinstonLevel {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 38 |     Error,
[INFO] [stdout] 39 |     Warn,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 40 |     Info,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     Http,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 42 |     VERBOSE,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 43 |     Debug,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 44 |     Silly,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         Int(i32),
[INFO] [stdout]    |         --- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 99 -         Int(i32),
[INFO] [stdout] 99 +         Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/main.rs:100:15
[INFO] [stdout]     |
[INFO] [stdout] 100 |         Float(f64),
[INFO] [stdout]     |         ----- ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 100 -         Float(f64),
[INFO] [stdout] 100 +         Float(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "6c44b799b22517571d19cec48f52af04220fed25b81cd0e986dd6830a046ca21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c44b799b22517571d19cec48f52af04220fed25b81cd0e986dd6830a046ca21", kill_on_drop: false }`
[INFO] [stdout] 6c44b799b22517571d19cec48f52af04220fed25b81cd0e986dd6830a046ca21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3c06a6a51f7f78d9bcb3f9eda5f6c522f2909df6888585d0d7c0b5bfd222f60
[INFO] running `Command { std: "docker" "start" "-a" "a3c06a6a51f7f78d9bcb3f9eda5f6c522f2909df6888585d0d7c0b5bfd222f60", kill_on_drop: false }`
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |         fn seat_at_table() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_order` is never used
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |         fn serve_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payment` is never used
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_payment() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> 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] [stderr]    Compiling rust-self-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `File` and `Read`
[INFO] [stdout]  --> src/main.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fs::{self, File},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 4 |     io::{self, Read},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel`, `Dime`, and `Quarter` are never constructed
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 31 |     Penny,
[INFO] [stdout] 32 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     Quarter,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Warn`, `Info`, `Http`, `VERBOSE`, `Debug`, and `Silly` are never constructed
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum WinstonLevel {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 38 |     Error,
[INFO] [stdout] 39 |     Warn,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 40 |     Info,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     Http,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 42 |     VERBOSE,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 43 |     Debug,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 44 |     Silly,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `seat_at_table` is never used
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |         fn seat_at_table() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_order` is never used
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |         fn take_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serve_order` is never used
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |         fn serve_order() {}
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_payment` is never used
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         fn take_payment() {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]   --> 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "a3c06a6a51f7f78d9bcb3f9eda5f6c522f2909df6888585d0d7c0b5bfd222f60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c06a6a51f7f78d9bcb3f9eda5f6c522f2909df6888585d0d7c0b5bfd222f60", kill_on_drop: false }`
[INFO] [stdout] a3c06a6a51f7f78d9bcb3f9eda5f6c522f2909df6888585d0d7c0b5bfd222f60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6fa5524be8df4d3e2a57f103007e56861c46bac2b5065d93f8af65ce92610470
[INFO] running `Command { std: "docker" "start" "-a" "6fa5524be8df4d3e2a57f103007e56861c46bac2b5065d93f8af65ce92610470", kill_on_drop: false }`
[INFO] [stderr] warning: function `seat_at_table` is never used
[INFO] [stderr]  --> src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |         fn seat_at_table() {}
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_order` is never used
[INFO] [stderr]  --> src/lib.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 |         fn take_order() {}
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `serve_order` is never used
[INFO] [stderr]  --> src/lib.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |         fn serve_order() {}
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_payment` is never used
[INFO] [stderr]  --> src/lib.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |         fn take_payment() {}
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]   --> src/lib.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub struct Breakfast {
[INFO] [stderr]    |                --------- field in this struct
[INFO] [stderr] 15 |         pub toast: String,
[INFO] [stderr] 16 |         seasonal_fruit: String,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-self-learning` (lib) generated 5 warnings
[INFO] [stderr] warning: unused imports: `File` and `Read`
[INFO] [stderr]  --> src/main.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |     fs::{self, File},
[INFO] [stderr]   |                ^^^^
[INFO] [stderr] 4 |     io::{self, Read},
[INFO] [stderr]   |                ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Nickel`, `Dime`, and `Quarter` are never constructed
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | enum Coin {
[INFO] [stderr]    |      ---- variants in this enum
[INFO] [stderr] 31 |     Penny,
[INFO] [stderr] 32 |     Nickel,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 33 |     Dime,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 34 |     Quarter,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Warn`, `Info`, `Http`, `VERBOSE`, `Debug`, and `Silly` are never constructed
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | enum WinstonLevel {
[INFO] [stderr]    |      ------------ variants in this enum
[INFO] [stderr] 38 |     Error,
[INFO] [stderr] 39 |     Warn,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 40 |     Info,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 41 |     Http,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 42 |     VERBOSE,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 43 |     Debug,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 44 |     Silly,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-self-learning` (bin "rust-self-learning" test) generated 3 warnings (run `cargo fix --bin "rust-self-learning" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-self-learning` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_self_learning-a361d119696bc329)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_self_learning-462a2332cff22ab0)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_self_learning
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6fa5524be8df4d3e2a57f103007e56861c46bac2b5065d93f8af65ce92610470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fa5524be8df4d3e2a57f103007e56861c46bac2b5065d93f8af65ce92610470", kill_on_drop: false }`
[INFO] [stdout] 6fa5524be8df4d3e2a57f103007e56861c46bac2b5065d93f8af65ce92610470