[INFO] cloning repository https://github.com/Av1nag/The-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Av1nag/The-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAv1nag%2FThe-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAv1nag%2FThe-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d84e11b5c3182234bfec35b60aca139f38e9e6f1
[INFO] checking Av1nag/The-Rust against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAv1nag%2FThe-Rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Av1nag/The-Rust on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Av1nag/The-Rust
[INFO] finished tweaking git repo https://github.com/Av1nag/The-Rust
[INFO] tweaked toml for git repo https://github.com/Av1nag/The-Rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Av1nag/The-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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfc234c0b05468879fd570ef6175b3f0a107c83223c376cd0b491dc70ce6111e
[INFO] running `Command { std: "docker" "start" "-a" "cfc234c0b05468879fd570ef6175b3f0a107c83223c376cd0b491dc70ce6111e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfc234c0b05468879fd570ef6175b3f0a107c83223c376cd0b491dc70ce6111e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc234c0b05468879fd570ef6175b3f0a107c83223c376cd0b491dc70ce6111e", kill_on_drop: false }`
[INFO] [stdout] cfc234c0b05468879fd570ef6175b3f0a107c83223c376cd0b491dc70ce6111e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb70bbb0cd34f5517f7a9a2c489236f290e6a4cdee86d176641284a6c47cb6af
[INFO] running `Command { std: "docker" "start" "-a" "cb70bbb0cd34f5517f7a9a2c489236f290e6a4cdee86d176641284a6c47cb6af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking first_rocket_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `signed_integer_of_8bit`
[INFO] [stdout]   --> src/data_types.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let signed_integer_of_8bit: i8 = -10; //here the output will be -10
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_8bit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_8bit`
[INFO] [stdout]   --> src/data_types.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let unsigned_integer_of_8bit: u8 = 20; //if we try to sigining this variable it gives complie time error
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_8bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_16bit`
[INFO] [stdout]   --> src/data_types.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let signed_integer_of_16bit: i16 = 100;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_16bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_16bit`
[INFO] [stdout]   --> src/data_types.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let unsigned_integer_of_16bit: u16 = 120;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_16bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let signed_integer_of_32bit: i32 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let unsigned_integer_of_32bit: u32 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let signed_integer_of_64bit: i64 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let unsigned_integer_of_64bit: u64 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_128bit`
[INFO] [stdout]   --> src/data_types.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let signed_integer_of_128bit: i128 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_128bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let unsigned_integer_of_32bit: u128 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_size_computer_architecture`
[INFO] [stdout]   --> src/data_types.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let signed_integer_of_size_computer_architecture: isize = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_size_computer_architecture`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_size_computer_architecture`
[INFO] [stdout]   --> src/data_types.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let unsigned_integer_of_size_computer_architecture: usize = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_size_computer_architecture`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_variable_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let float_variable_of_32bit: f32 = 20.1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_variable_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_variable_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let float_variable_of_64bit: f64 = 20.5;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_variable_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `summing_variable`
[INFO] [stdout]   --> src/data_types.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let summing_variable = 5 + 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_summing_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subtraction_varable`
[INFO] [stdout]   --> src/data_types.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let subtraction_varable = 2 - 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subtraction_varable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `multiplication_variable`
[INFO] [stdout]   --> src/data_types.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let multiplication_variable = 3 * 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_multiplication_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_variable`
[INFO] [stdout]   --> src/data_types.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let division_variable = 10 / 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder_variable`
[INFO] [stdout]   --> src/data_types.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let remainder_variable = 10 % 5;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/data_types.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let t = true;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/data_types.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let f: bool = false; // with explicit type annotation....
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/data_types.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/data_types.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let z: char = 'ℤ'; // with explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heart_eyed_cat`
[INFO] [stdout]   --> src/data_types.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let heart_eyed_cat = '😻';
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `twenty_point_three`
[INFO] [stdout]    --> src/data_types.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let twenty_point_three = tuple.0;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_twenty_point_three`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sixteen_point_five`
[INFO] [stdout]    --> src/data_types.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let sixteen_point_five = tuple.1;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sixteen_point_five`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting`
[INFO] [stdout]    --> src/data_types.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let greeting = tuple_with_type_annotation.1;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/data_types.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let b: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `months`
[INFO] [stdout]    --> src/data_types.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let months = [
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]    --> src/data_types.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let first = a[0];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]    --> src/data_types.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let second = a[1];
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `immutable_variable`
[INFO] [stdout]   --> src/variables.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let immutable_variable = 54;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/ownership.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let r3 = &mut s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_8bit`
[INFO] [stdout]   --> src/data_types.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let signed_integer_of_8bit: i8 = -10; //here the output will be -10
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_8bit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_8bit`
[INFO] [stdout]   --> src/data_types.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let unsigned_integer_of_8bit: u8 = 20; //if we try to sigining this variable it gives complie time error
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_8bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_16bit`
[INFO] [stdout]   --> src/data_types.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let signed_integer_of_16bit: i16 = 100;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_16bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_16bit`
[INFO] [stdout]   --> src/data_types.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let unsigned_integer_of_16bit: u16 = 120;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_16bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let signed_integer_of_32bit: i32 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let unsigned_integer_of_32bit: u32 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let signed_integer_of_64bit: i64 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let unsigned_integer_of_64bit: u64 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_128bit`
[INFO] [stdout]   --> src/data_types.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let signed_integer_of_128bit: i128 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_128bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let unsigned_integer_of_32bit: u128 = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `signed_integer_of_size_computer_architecture`
[INFO] [stdout]   --> src/data_types.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let signed_integer_of_size_computer_architecture: isize = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_signed_integer_of_size_computer_architecture`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unsigned_integer_of_size_computer_architecture`
[INFO] [stdout]   --> src/data_types.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let unsigned_integer_of_size_computer_architecture: usize = 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unsigned_integer_of_size_computer_architecture`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_variable_of_32bit`
[INFO] [stdout]   --> src/data_types.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let float_variable_of_32bit: f32 = 20.1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_variable_of_32bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_variable_of_64bit`
[INFO] [stdout]   --> src/data_types.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let float_variable_of_64bit: f64 = 20.5;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_variable_of_64bit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `summing_variable`
[INFO] [stdout]   --> src/data_types.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let summing_variable = 5 + 10;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_summing_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subtraction_varable`
[INFO] [stdout]   --> src/data_types.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let subtraction_varable = 2 - 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subtraction_varable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `multiplication_variable`
[INFO] [stdout]   --> src/data_types.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let multiplication_variable = 3 * 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_multiplication_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `division_variable`
[INFO] [stdout]   --> src/data_types.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let division_variable = 10 / 2;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_division_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remainder_variable`
[INFO] [stdout]   --> src/data_types.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let remainder_variable = 10 % 5;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/data_types.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let t = true;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/data_types.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let f: bool = false; // with explicit type annotation....
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/data_types.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/data_types.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let z: char = 'ℤ'; // with explicit type annotation
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heart_eyed_cat`
[INFO] [stdout]   --> src/data_types.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let heart_eyed_cat = '😻';
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `twenty_point_three`
[INFO] [stdout]    --> src/data_types.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let twenty_point_three = tuple.0;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_twenty_point_three`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sixteen_point_five`
[INFO] [stdout]    --> src/data_types.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let sixteen_point_five = tuple.1;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sixteen_point_five`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting`
[INFO] [stdout]    --> src/data_types.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let greeting = tuple_with_type_annotation.1;
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/data_types.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let b: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `months`
[INFO] [stdout]    --> src/data_types.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let months = [
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]    --> src/data_types.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let first = a[0];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]    --> src/data_types.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let second = a[1];
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `immutable_variable`
[INFO] [stdout]   --> src/variables.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let immutable_variable = 54;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `A_CONSTANT_VARIABLE` is never used
[INFO] [stdout]   --> src/variables.rs:41:11
[INFO] [stdout]    |
[INFO] [stdout] 41 |     const A_CONSTANT_VARIABLE :i32 = 60*30; 
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `funtion_with_return_type` is never used
[INFO] [stdout]   --> src/functions.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn funtion_with_return_type() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/ownership.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let r3 = &mut s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `A_CONSTANT_VARIABLE` is never used
[INFO] [stdout]   --> src/variables.rs:41:11
[INFO] [stdout]    |
[INFO] [stdout] 41 |     const A_CONSTANT_VARIABLE :i32 = 60*30; 
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `funtion_with_return_type` is never used
[INFO] [stdout]   --> src/functions.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn funtion_with_return_type() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "cb70bbb0cd34f5517f7a9a2c489236f290e6a4cdee86d176641284a6c47cb6af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb70bbb0cd34f5517f7a9a2c489236f290e6a4cdee86d176641284a6c47cb6af", kill_on_drop: false }`
[INFO] [stdout] cb70bbb0cd34f5517f7a9a2c489236f290e6a4cdee86d176641284a6c47cb6af
