[INFO] cloning repository https://github.com/luotaoyeah/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luotaoyeah/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluotaoyeah%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluotaoyeah%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 637ed763a330658431c60ca0ad57981803f1a969
[INFO] checking luotaoyeah/learning-rust against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluotaoyeah%2Flearning-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luotaoyeah/learning-rust on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luotaoyeah/learning-rust
[INFO] finished tweaking git repo https://github.com/luotaoyeah/learning-rust
[INFO] tweaked toml for git repo https://github.com/luotaoyeah/learning-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/luotaoyeah/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6bc236a7796e9e8f00675c1c9440f2660bb2a998b1c94f6acd80cca8b4c0d5c
[INFO] running `Command { std: "docker" "start" "-a" "e6bc236a7796e9e8f00675c1c9440f2660bb2a998b1c94f6acd80cca8b4c0d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6bc236a7796e9e8f00675c1c9440f2660bb2a998b1c94f6acd80cca8b4c0d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bc236a7796e9e8f00675c1c9440f2660bb2a998b1c94f6acd80cca8b4c0d5c", kill_on_drop: false }`
[INFO] [stdout] e6bc236a7796e9e8f00675c1c9440f2660bb2a998b1c94f6acd80cca8b4c0d5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1de85e22e54ddd4172e6882a680d316f8f62179f59b6849388b3523ac22ad157
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1de85e22e54ddd4172e6882a680d316f8f62179f59b6849388b3523ac22ad157", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::books::beginning_rust`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::books::beginning_rust;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::books::beginning_rust`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::books::beginning_rust;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     return 9;
[INFO] [stdout]    |     -------- any code following this expression is unreachable
[INFO] [stdout] 15 |     5
[INFO] [stdout]    |     ^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     return 9;
[INFO] [stdout]    |     -------- any code following this expression is unreachable
[INFO] [stdout] 15 |     5
[INFO] [stdout]    |     ^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i03`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_01.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let i03: u32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i03`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i01`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let i01: u32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i02`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut i02: u32;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_i02`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_01.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let i01: u32 = 9; // warning: unused variable: `i01`
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_i01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n01` is never read
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_09_change_of_type_and_of_mutability/ch_03_09_01.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut n01: i32 = 9;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_01.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let x: i32 = 9;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_02.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut x = 9;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_04.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let y = 9;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_01.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for (i, v) in arr01.iter().enumerate() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i03`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_01.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let i03: u32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i03`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i01`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let i01: u32;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_i01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i02`
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut i02: u32;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_i02`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_01.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let i01: u32 = 9; // warning: unused variable: `i01`
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_i01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n01` is never read
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_09_change_of_type_and_of_mutability/ch_03_09_01.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut n01: i32 = 9;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_01.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let x: i32 = 9;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_02.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut x = 9;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_04.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let y = 9;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_01.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     for (i, v) in arr01.iter().enumerate() {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_03_not_mutated_mutable_variables/ch_03_03_01.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut i: u32 = 9;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_01.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut n: u32 = 9;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_03_not_mutated_mutable_variables/ch_03_03_01.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut i: u32 = 9;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_01.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut n: u32 = 9;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut str01: String = String::from(s01);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut str01: String = String::from(s01);
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_02.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut s01: String = String::from("FOO");
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_03_printing_combinations_of_literal_string/ch_01_03_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_01_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_03_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_03_printing_combinations_of_literal_string/ch_01_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_01_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_04_printing_several_lines_of_text/ch_01_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_04_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_04_printing_several_lines_of_text/ch_01_04_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_05_printing_integer_numbers/ch_01_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_07_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_07_comments/ch_01_07_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_07_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_01_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_01_adding_integer_numbers/ch_02_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_02_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_02_other_operations_between_integer_numbers/ch_02_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_03_floating_point_arithmetic/ch_02_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_03_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_03_floating_point_arithmetic/ch_02_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_02_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_04_sequences_of_statements/ch_02_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_03`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_01_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_01_associating_names_to_values/ch_03_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_02_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_02_mutable_variables/ch_03_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_03_not_mutated_mutable_variables/ch_03_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_03`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_06_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_06_boolean_values/ch_03_06_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_06_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_06_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_06_boolean_values/ch_03_06_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_06_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_07_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_07_boolean_expression/ch_03_07_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_07_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_08_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_08_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_08_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_08_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_09_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_09_change_of_type_and_of_mutability/ch_03_09_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_09_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_10_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_10_assignment_arithmetic_operators/ch_03_10_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_10_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_11_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_11_using_the_functions_of_the_standard_library/ch_03_11_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_11_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_11_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_11_using_the_functions_of_the_standard_library/ch_03_11_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_11_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_02_02_02_04`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_02_data_types/ch_03_02_02_compound_types/ch_03_02_02_02_array_type/ch_03_02_02_02_04.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn fn_03_02_02_02_04() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `another_fn`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_01.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn another_fn() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn fn_01() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn fn_03_03_01_02() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn fn_02() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_02_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_01.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn fn_01(x: i32, y: &str) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_02_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_02_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_01.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_03.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn plus_one(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_04_comments/ch_03_04_01.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn fn_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_05_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_05.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_02_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_02_repetition_with_loops/ch_03_05_02_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_03_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_03_returning_from_loops/ch_03_05_03_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_04_conditional_loops_with_while/ch_03_05_04_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_04.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn fn_03_05_05_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_01.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn fn_04_01_01() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_03`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn fn_04_01_03() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn fn_01() -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn fn_02(mut str01: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_05.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_02.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut s01: String = String::from("FOO");
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn fn_01(s: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_03_printing_combinations_of_literal_string/ch_01_03_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_01_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_03_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_03_printing_combinations_of_literal_string/ch_01_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_01_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn fn_02(i: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn fn_03(a: A) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_04_printing_several_lines_of_text/ch_01_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_04_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_04_printing_several_lines_of_text/ch_01_04_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_06_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_06_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_05_printing_integer_numbers/ch_01_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_01.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn fn_01() -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_type`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_type<T>(_: &T) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01_07_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_01_printing_on_the_terminal/ch_01_07_comments/ch_01_07_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_01_07_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_01_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_01_adding_integer_numbers/ch_02_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_02_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_02_other_operations_between_integer_numbers/ch_02_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_03_floating_point_arithmetic/ch_02_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_03_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_03_floating_point_arithmetic/ch_02_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_02_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_04_sequences_of_statements/ch_02_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02_05_03`
[INFO] [stdout]  --> src/books/beginning_rust/ch_02_doing_arithmetic/ch_02_05_breaking_literal_strings/ch_02_05_03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_02_05_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_01_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_01_associating_names_to_values/ch_03_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_02_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_02_mutable_variables/ch_03_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_03_not_mutated_mutable_variables/ch_03_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_03`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_04_uninitialized_variables/ch_03_04_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_05_the_leading_underscore/ch_03_05_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_06_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_06_boolean_values/ch_03_06_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_06_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_06_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_06_boolean_values/ch_03_06_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_06_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_07_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_07_boolean_expression/ch_03_07_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_07_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_08_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_08_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_08_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_08_type_consistency_in_assignments/ch_03_08_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_08_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_09_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_09_change_of_type_and_of_mutability/ch_03_09_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_09_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_10_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_10_assignment_arithmetic_operators/ch_03_10_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_10_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_11_01`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_11_using_the_functions_of_the_standard_library/ch_03_11_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_11_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_11_02`
[INFO] [stdout]  --> src/books/beginning_rust/ch_03_naming_objects/ch_03_11_using_the_functions_of_the_standard_library/ch_03_11_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_11_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_02_02_02_04`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_02_data_types/ch_03_02_02_compound_types/ch_03_02_02_02_array_type/ch_03_02_02_02_04.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn fn_03_02_02_02_04() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `another_fn`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_01.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn another_fn() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn fn_01() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_01_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn fn_03_03_01_02() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_01_functions/ch_03_03_01_02.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn fn_02() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_02_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_01.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn fn_01(x: i32, y: &str) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_02_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_02_functions_parameters/ch_03_03_02_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_02_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_03_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_03_function_bodies_contain_statements_and_expressions/ch_03_03_03_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_03_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_01.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_03_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `five`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_02.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn five() -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_03_04_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_03.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_03_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `plus_one`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_03_functions/ch_03_03_04_functions_with_return_values/ch_03_03_04_03.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn plus_one(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_04_comments/ch_03_04_01.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn fn_03_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_03_05_01_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_01_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_01_if_expressions/ch_03_05_01_05.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_01_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_02_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_02_repetition_with_loops/ch_03_05_02_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_02_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_03_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_03_returning_from_loops/ch_03_05_03_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_03_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_04_conditional_loops_with_while/ch_03_05_04_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_01.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_03_05_05_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03_05_05_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_03_common_programming_concepts/ch_03_05_control_flow/ch_03_05_05_looping_through_a_collection_with_for/ch_03_05_05_04.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn fn_03_05_05_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_01.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn fn_04_01_01() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_02.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_03`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn fn_04_01_03() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn fn_01() -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_03.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn fn_02(mut str01: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_04_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_02`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_02.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_02() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_03`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_03.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_03() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_04`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_04() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_04_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_04_memory_and_allocation/ch_04_01_04_05.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn fn_04_01_04_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_05`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_05() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn fn_01(s: String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_02`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn fn_02(i: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_03`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_05.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn fn_03(a: A) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_04_01_06_01`
[INFO] [stdout]  --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_01.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn fn_04_01_06_01() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_01`
[INFO] [stdout]   --> src/books/the_rust_programming_language/ch_04_understanding_ownership/ch_04_01_what_is_ownership/ch_04_01_06_return_values_and_scope/ch_04_01_06_01.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn fn_01() -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_type`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn print_type<T>(_: &T) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 95 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 95 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 6.77s
[INFO] running `Command { std: "docker" "inspect" "1de85e22e54ddd4172e6882a680d316f8f62179f59b6849388b3523ac22ad157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1de85e22e54ddd4172e6882a680d316f8f62179f59b6849388b3523ac22ad157", kill_on_drop: false }`
[INFO] [stdout] 1de85e22e54ddd4172e6882a680d316f8f62179f59b6849388b3523ac22ad157