{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":1256,"byte_end":1264,"line_start":47,"line_end":47,"column_start":9,"column_end":17,"is_primary":true,"text":[{"text":"    let mut grid = current_grid; // point north to the right","highlight_start":9,"highlight_end":17}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_mut)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":1256,"byte_end":1260,"line_start":47,"line_end":47,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut grid = current_grid; // point north to the right","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:47:9\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m47\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut grid = current_grid; // point north to the right\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_mut)]` on by default\u001b[0m\n\n"}
{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":1317,"byte_end":1325,"line_start":48,"line_end":48,"column_start":9,"column_end":17,"is_primary":true,"text":[{"text":"    let mut grid = transpose(&reverse(&grid));","highlight_start":9,"highlight_end":17}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":1317,"byte_end":1321,"line_start":48,"line_end":48,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut grid = transpose(&reverse(&grid));","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:48:9\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m48\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut grid = transpose(&reverse(&grid));\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\n"}
{"message":"unused variable: `new`","code":{"code":"unused_variables","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2778,"byte_end":2781,"line_start":108,"line_end":108,"column_start":13,"column_end":16,"is_primary":true,"text":[{"text":"    let mut new = String::from(s);","highlight_start":13,"highlight_end":16}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_variables)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"if this is intentional, prefix it with an underscore","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":2778,"byte_end":2781,"line_start":108,"line_end":108,"column_start":13,"column_end":16,"is_primary":true,"text":[{"text":"    let mut new = String::from(s);","highlight_start":13,"highlight_end":16}],"label":null,"suggested_replacement":"_new","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: unused variable: `new`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:108:13\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m108\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut new = String::from(s);\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m            \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[33mhelp: if this is intentional, prefix it with an underscore: `_new`\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_variables)]` on by default\u001b[0m\n\n"}
{"message":"unused variable: `i`","code":{"code":"unused_variables","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2857,"byte_end":2858,"line_start":111,"line_end":111,"column_start":10,"column_end":11,"is_primary":true,"text":[{"text":"    for (i, c) in s.chars().enumerate() {","highlight_start":10,"highlight_end":11}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"if this is intentional, prefix it with an underscore","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":2857,"byte_end":2858,"line_start":111,"line_end":111,"column_start":10,"column_end":11,"is_primary":true,"text":[{"text":"    for (i, c) in s.chars().enumerate() {","highlight_start":10,"highlight_end":11}],"label":null,"suggested_replacement":"_i","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: unused variable: `i`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:111:10\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m111\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    for (i, c) in s.chars().enumerate() {\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m         \u001b[0m\u001b[0m\u001b[1m\u001b[33m^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[33mhelp: if this is intentional, prefix it with an underscore: `_i`\u001b[0m\n\n"}
{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":2774,"byte_end":2781,"line_start":108,"line_end":108,"column_start":9,"column_end":16,"is_primary":true,"text":[{"text":"    let mut new = String::from(s);","highlight_start":9,"highlight_end":16}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":2774,"byte_end":2778,"line_start":108,"line_end":108,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut new = String::from(s);","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:108:9\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m108\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut new = String::from(s);\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\n"}
{"message":"function `print_map` is never used","code":{"code":"dead_code","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":1643,"byte_end":1652,"line_start":59,"line_end":59,"column_start":4,"column_end":13,"is_primary":true,"text":[{"text":"fn print_map(g: &Vec<String>) {","highlight_start":4,"highlight_end":13}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(dead_code)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: function `print_map` is never used\u001b[0m\n\u001b[0m  \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:59:4\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m59\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0mfn print_map(g: &Vec<String>) {\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^^^^^^\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(dead_code)]` on by default\u001b[0m\n\n"}
{"message":"function `roll_and_turn` is never used","code":{"code":"dead_code","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":3570,"byte_end":3583,"line_start":143,"line_end":143,"column_start":4,"column_end":17,"is_primary":true,"text":[{"text":"fn roll_and_turn(mat: Vec<String>) -> Vec<String> {","highlight_start":4,"highlight_end":17}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: function `roll_and_turn` is never used\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:143:4\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m143\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0mfn roll_and_turn(mat: Vec<String>) -> Vec<String> {\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^^^^^^^^^^\u001b[0m\n\n"}
{"message":"7 warnings emitted","code":null,"level":"warning","spans":[],"children":[],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: 7 warnings emitted\u001b[0m\n\n"}