[INFO] cloning repository https://github.com/xkillx/belajar-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xkillx/belajar-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkillx%2Fbelajar-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkillx%2Fbelajar-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c09fc1cc3e81290b6ab00707163fb2a19b56c603
[INFO] linting xkillx/belajar-rust against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkillx%2Fbelajar-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xkillx/belajar-rust
[INFO] finished tweaking git repo https://github.com/xkillx/belajar-rust
[INFO] tweaked toml for git repo https://github.com/xkillx/belajar-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xkillx/belajar-rust on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xkillx/belajar-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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4b00045b0b25d57a5983772977c36e5596787e8bbca21d1b947ea0d6684cc6f
[INFO] running `Command { std: "docker" "start" "-a" "e4b00045b0b25d57a5983772977c36e5596787e8bbca21d1b947ea0d6684cc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4b00045b0b25d57a5983772977c36e5596787e8bbca21d1b947ea0d6684cc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4b00045b0b25d57a5983772977c36e5596787e8bbca21d1b947ea0d6684cc6f", kill_on_drop: false }`
[INFO] [stdout] e4b00045b0b25d57a5983772977c36e5596787e8bbca21d1b947ea0d6684cc6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a13c0ec2826a63ed623cbdc8ac873c41f02d37949e7bd18a5ada417775947c6
[INFO] running `Command { std: "docker" "start" "-a" "9a13c0ec2826a63ed623cbdc8ac873c41f02d37949e7bd18a5ada417775947c6", kill_on_drop: false }`
[INFO] [stderr]     Checking belajar-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0; // Regular annotation
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer = 5i32; // Suffix annotation
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let default_float = 3.0; // `f64`
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let default_integer = 7; // `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mutable = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_array`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let my_array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_tuple`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let my_tuple = (5u32, 1u8, true, -5.04f32);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/bin/05-debug-pretty.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Person<'a> {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 3 |     name: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     age: u8
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/bin/05-debug-pretty.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Person<'a> {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 3 |     name: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     age: u8
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/bin/11-tupples.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ------ ^^^  ^^^  ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Matrix` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `red`, `green`, and `blue` are never read
[INFO] [stdout]   --> src/bin/08-print-struct.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Color {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 33 |     red: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 34 |     green: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     blue: u8,
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: float has excessive precision
[INFO] [stdout]   --> src/bin/08-print-struct.rs:42:18
[INFO] [stdout]    |
[INFO] [stdout] 42 |             lat: 53.347778,
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#excessive_precision
[INFO] [stdout]    = note: `#[warn(clippy::excessive_precision)]` on by default
[INFO] [stdout] help: consider changing the type or truncating it to
[INFO] [stdout]    |
[INFO] [stdout] 42 -             lat: 53.347778,
[INFO] [stdout] 42 +             lat: 53.347_78,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/04-debug-print.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Structure(i32);
[INFO] [stdout]   |        --------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/04-debug-print.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Deep(Structure);
[INFO] [stdout]   |        ---- ^^^^^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Deep` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read
[INFO] [stdout]   --> src/bin/11-tupples.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ------ ^^^  ^^^  ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `Matrix` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0; // Regular annotation
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer = 5i32; // Suffix annotation
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> src/bin/09-primitive-type.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let default_float = 3.0; // `f64`
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let default_integer = 7; // `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mutable = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_array`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let my_array: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_tuple`
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let my_tuple = (5u32, 1u8, true, -5.04f32);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> src/bin/09-primitive-type.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]   --> src/bin/24-variable-initialization.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let another_binding;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ created here
[INFO] [stdout] ...
[INFO] [stdout] 22 |     another_binding = 1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^ initialised here
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout]    = note: `#[warn(clippy::needless_late_init)]` on by default
[INFO] [stdout] help: move the declaration `another_binding` here
[INFO] [stdout]    |
[INFO] [stdout] 16 ~     
[INFO] [stdout] 17 |
[INFO] [stdout] ...
[INFO] [stdout] 21 |     // Now we assign it
[INFO] [stdout] 22 ~     let another_binding = 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/bin/03-formatted-print.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |                object="the lazy dog",
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 14 | |              subject="the quick brown fox",
[INFO] [stdout] 15 | |              verb="jumps over");
[INFO] [stdout]    | |______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout]    = note: `#[warn(clippy::print_literal)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 12 -     println!("{subject} {verb} {object}",
[INFO] [stdout] 13 -              object="the lazy dog",
[INFO] [stdout] 14 -              subject="the quick brown fox",
[INFO] [stdout] 15 -              verb="jumps over");
[INFO] [stdout] 12 +     println!("the quick brown fox jumps over the lazy dog");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/bin/03-formatted-print.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |     println!("My name is {0}, {1} {0}", "Bond", "James");
[INFO] [stdout]    |                                                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 37 -     println!("My name is {0}, {1} {0}", "Bond", "James");
[INFO] [stdout] 37 +     println!("My name is {0}, James {0}", "Bond");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/bin/18-linked-list.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 format!("Nil")
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Nil".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/bin/18-linked-list.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 format!("Nil")
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"Nil".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/bin/13-structs.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         bottom_right: bottom_right,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `bottom_right`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/bin/03-formatted-print.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 |                object="the lazy dog",
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 14 | |              subject="the quick brown fox",
[INFO] [stdout] 15 | |              verb="jumps over");
[INFO] [stdout]    | |______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout]    = note: `#[warn(clippy::print_literal)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 12 -     println!("{subject} {verb} {object}",
[INFO] [stdout] 13 -              object="the lazy dog",
[INFO] [stdout] 14 -              subject="the quick brown fox",
[INFO] [stdout] 15 -              verb="jumps over");
[INFO] [stdout] 12 +     println!("the quick brown fox jumps over the lazy dog");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: literal with an empty format string
[INFO] [stdout]   --> src/bin/03-formatted-print.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |     println!("My name is {0}, {1} {0}", "Bond", "James");
[INFO] [stdout]    |                                                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 37 -     println!("My name is {0}, {1} {0}", "Bond", "James");
[INFO] [stdout] 37 +     println!("My name is {0}, James {0}", "Bond");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u16` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |     println!("1000 as a u16 is: {}", 1000 as u16);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: try: `1000_u16`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 |     println!("1000 as a u8 is : {}", 1000 as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `1000_u8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i16` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |     println!(" 128 as a i16 is: {}", 128 as i16);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `128_i16`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:47:38
[INFO] [stdout]    |
[INFO] [stdout] 47 |     println!(" 128 as a i8 is : {}", 128 as i8);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: try: `128_i8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 |     println!("1000 as a u8 is : {}", 1000 as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `1000_u8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:52:38
[INFO] [stdout]    |
[INFO] [stdout] 52 |     println!(" 232 as a i8 is : {}", 232 as i8);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: try: `232_i8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a known NaN to u8
[INFO] [stdout]   --> src/bin/26-casting.rs:57:38
[INFO] [stdout]    |
[INFO] [stdout] 57 |     println!("   nan as u8 is : {}", f32::NAN as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this always evaluates to 0
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_nan_to_int
[INFO] [stdout]    = note: `#[warn(clippy::cast_nan_to_int)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     println!("true AND false is {}", true && false);
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:14:37
[INFO] [stdout]    |
[INFO] [stdout] 14 |     println!("true OR false is {}", true || false);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: try: `true`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     println!("NOT true is {}", !true);
[INFO] [stdout]    |                                ^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `red`, `green`, and `blue` are never read
[INFO] [stdout]   --> src/bin/08-print-struct.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Color {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 33 |     red: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 34 |     green: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     blue: u8,
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: float has excessive precision
[INFO] [stdout]   --> src/bin/08-print-struct.rs:42:18
[INFO] [stdout]    |
[INFO] [stdout] 42 |             lat: 53.347778,
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#excessive_precision
[INFO] [stdout]    = note: `#[warn(clippy::excessive_precision)]` on by default
[INFO] [stdout] help: consider changing the type or truncating it to
[INFO] [stdout]    |
[INFO] [stdout] 42 -             lat: 53.347778,
[INFO] [stdout] 42 +             lat: 53.347_78,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/bin/13-structs.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         bottom_right: bottom_right,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `bottom_right`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u16` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |     println!("1000 as a u16 is: {}", 1000 as u16);
[INFO] [stdout]    |                                      ^^^^^^^^^^^ help: try: `1000_u16`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 |     println!("1000 as a u8 is : {}", 1000 as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `1000_u8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i16` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |     println!(" 128 as a i16 is: {}", 128 as i16);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `128_i16`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:47:38
[INFO] [stdout]    |
[INFO] [stdout] 47 |     println!(" 128 as a i8 is : {}", 128 as i8);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: try: `128_i8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:50:38
[INFO] [stdout]    |
[INFO] [stdout] 50 |     println!("1000 as a u8 is : {}", 1000 as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: try: `1000_u8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `i8` is unnecessary
[INFO] [stdout]   --> src/bin/26-casting.rs:52:38
[INFO] [stdout]    |
[INFO] [stdout] 52 |     println!(" 232 as a i8 is : {}", 232 as i8);
[INFO] [stdout]    |                                      ^^^^^^^^^ help: try: `232_i8`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a known NaN to u8
[INFO] [stdout]   --> src/bin/26-casting.rs:57:38
[INFO] [stdout]    |
[INFO] [stdout] 57 |     println!("   nan as u8 is : {}", f32::NAN as u8);
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this always evaluates to 0
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_nan_to_int
[INFO] [stdout]    = note: `#[warn(clippy::cast_nan_to_int)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     println!("true AND false is {}", true && false);
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:14:37
[INFO] [stdout]    |
[INFO] [stdout] 14 |     println!("true OR false is {}", true || false);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ help: try: `true`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/10-literals-operator.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     println!("NOT true is {}", !true);
[INFO] [stdout]    |                                ^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]   --> src/bin/24-variable-initialization.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let another_binding;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ created here
[INFO] [stdout] ...
[INFO] [stdout] 22 |     another_binding = 1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^ initialised here
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout]    = note: `#[warn(clippy::needless_late_init)]` on by default
[INFO] [stdout] help: move the declaration `another_binding` here
[INFO] [stdout]    |
[INFO] [stdout] 16 ~     
[INFO] [stdout] 17 |
[INFO] [stdout] ...
[INFO] [stdout] 21 |     // Now we assign it
[INFO] [stdout] 22 ~     let another_binding = 1;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/04-debug-print.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Structure(i32);
[INFO] [stdout]   |        --------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Structure` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/04-debug-print.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Deep(Structure);
[INFO] [stdout]   |        ---- ^^^^^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `Deep` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "9a13c0ec2826a63ed623cbdc8ac873c41f02d37949e7bd18a5ada417775947c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a13c0ec2826a63ed623cbdc8ac873c41f02d37949e7bd18a5ada417775947c6", kill_on_drop: false }`
[INFO] [stdout] 9a13c0ec2826a63ed623cbdc8ac873c41f02d37949e7bd18a5ada417775947c6