[INFO] cloning repository https://github.com/tqma113/json_parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tqma113/json_parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftqma113%2Fjson_parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftqma113%2Fjson_parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c6fab0d27c40fd2a068247eb6464063baa5a7f6
[INFO] checking tqma113/json_parser against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftqma113%2Fjson_parser" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tqma113/json_parser on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tqma113/json_parser
[INFO] finished tweaking git repo https://github.com/tqma113/json_parser
[INFO] tweaked toml for git repo https://github.com/tqma113/json_parser written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/tqma113/json_parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7703a6d4ca395e9ed61439b52e13e7f63c7bec2ebf0b5a1e71857b63c17d130e
[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" "7703a6d4ca395e9ed61439b52e13e7f63c7bec2ebf0b5a1e71857b63c17d130e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7703a6d4ca395e9ed61439b52e13e7f63c7bec2ebf0b5a1e71857b63c17d130e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7703a6d4ca395e9ed61439b52e13e7f63c7bec2ebf0b5a1e71857b63c17d130e", kill_on_drop: false }`
[INFO] [stdout] 7703a6d4ca395e9ed61439b52e13e7f63c7bec2ebf0b5a1e71857b63c17d130e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6556ba8a7eb9314e1cd0c7dafea3eb133a9a266cc915cf505daefafb084d5efe
[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" "6556ba8a7eb9314e1cd0c7dafea3eb133a9a266cc915cf505daefafb084d5efe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking json_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/json/de.rs:416:21
[INFO] [stdout]     |
[INFO] [stdout] 416 |                        break match self.match_digit() {
[INFO] [stdout]     |  ______________________^_____-
[INFO] [stdout]     | | _____________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 417 | ||                         Ok(c) => {
[INFO] [stdout] 418 | ||                             match c.to_digit(10) {
[INFO] [stdout] 419 | ||                                 Some(n) => {
[INFO] [stdout] ...   ||
[INFO] [stdout] 430 | ||                         }
[INFO] [stdout] 431 | ||                     }
[INFO] [stdout]     | ||                     ^
[INFO] [stdout]     | ||_____________________|
[INFO] [stdout]     | |______________________unreachable expression
[INFO] [stdout]     |                        any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:144:29
[INFO] [stdout]     |
[INFO] [stdout] 144 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:207:29
[INFO] [stdout]     |
[INFO] [stdout] 207 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]    --> src/json/de.rs:214:28
[INFO] [stdout]     |
[INFO] [stdout] 214 |                         Ok(code) => {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |             Err(message) => {
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:305:29
[INFO] [stdout]     |
[INFO] [stdout] 305 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:327:18
[INFO] [stdout]     |
[INFO] [stdout] 327 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:336:29
[INFO] [stdout]     |
[INFO] [stdout] 336 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:352:18
[INFO] [stdout]     |
[INFO] [stdout] 352 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:373:37
[INFO] [stdout]     |
[INFO] [stdout] 373 | ...                   Err(message) => {
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:410:18
[INFO] [stdout]     |
[INFO] [stdout] 410 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:442:16
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Ok(c) => {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/json/de.rs:416:21
[INFO] [stdout]     |
[INFO] [stdout] 416 |                        break match self.match_digit() {
[INFO] [stdout]     |  ______________________^_____-
[INFO] [stdout]     | | _____________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 417 | ||                         Ok(c) => {
[INFO] [stdout] 418 | ||                             match c.to_digit(10) {
[INFO] [stdout] 419 | ||                                 Some(n) => {
[INFO] [stdout] ...   ||
[INFO] [stdout] 430 | ||                         }
[INFO] [stdout] 431 | ||                     }
[INFO] [stdout]     | ||                     ^
[INFO] [stdout]     | ||_____________________|
[INFO] [stdout]     | |______________________unreachable expression
[INFO] [stdout]     |                        any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json/de.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let mut count: u16 = 0;
[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: struct is never constructed: `Element`
[INFO] [stdout]  --> src/json/element.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Element {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PosInt`
[INFO] [stdout]  --> src/json/value/number.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     PosInt(u64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NegInt`
[INFO] [stdout]  --> src/json/value/number.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     NegInt(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Float`
[INFO] [stdout]  --> src/json/value/number.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Float(f64),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Null`
[INFO] [stdout]   --> src/json/value/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Null,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]   --> src/json/value/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Number(Number),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]   --> src/json/value/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     String(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Array`
[INFO] [stdout]   --> src/json/value/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Array(Vec<Value>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Object`
[INFO] [stdout]   --> src/json/value/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Object(HashMap<String, Value>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `index_into`
[INFO] [stdout]   --> src/json/value/mod.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn index_into<I: Index>(&self, i: I) -> Option<&Value> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_null`
[INFO] [stdout]   --> src/json/value/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn is_null(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn as_boolean(&self) -> Option<bool> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn is_boolean(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_number`
[INFO] [stdout]   --> src/json/value/mod.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn as_number(&self) -> Option<&Number> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_number`
[INFO] [stdout]   --> src/json/value/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn is_number(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_str`
[INFO] [stdout]   --> src/json/value/mod.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn as_str(&self) -> Option<&str> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_string`
[INFO] [stdout]   --> src/json/value/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn is_string(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_array`
[INFO] [stdout]   --> src/json/value/mod.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn as_array(&self) -> Option<&Vec<Value>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_array`
[INFO] [stdout]   --> src/json/value/mod.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn is_array(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_object`
[INFO] [stdout]   --> src/json/value/mod.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn as_object(&self) -> Option<&HashMap<String, Value>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_object`
[INFO] [stdout]   --> src/json/value/mod.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn is_object(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `De`
[INFO] [stdout]  --> src/json/de.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct De<'a> {
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/json/de.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(str: &String) -> De {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialization`
[INFO] [stdout]   --> src/json/de.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn deserialization(&mut self) -> Result<Value, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/json/de.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn next(&mut self) -> Option<char> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ignore_space`
[INFO] [stdout]   --> src/json/de.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn ignore_space(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_value`
[INFO] [stdout]   --> src/json/de.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn match_value(&mut self) -> Result<Value, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_object`
[INFO] [stdout]    --> src/json/de.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn match_object(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_members`
[INFO] [stdout]    --> src/json/de.rs:195:12
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn match_members(&mut self) -> Result<HashMap<String, Value>, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_member`
[INFO] [stdout]    --> src/json/de.rs:226:12
[INFO] [stdout]     |
[INFO] [stdout] 226 |     pub fn match_member(&mut self) -> Result<(String, Value), Result<u8, String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_array`
[INFO] [stdout]    --> src/json/de.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 262 |     pub fn match_array(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_elements`
[INFO] [stdout]    --> src/json/de.rs:293:12
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn match_elements(&mut self) -> Result<Vec<Value>, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_element`
[INFO] [stdout]    --> src/json/de.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 |     pub fn match_element(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_string`
[INFO] [stdout]    --> src/json/de.rs:325:12
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn match_string(&mut self) -> Result<String, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_number`
[INFO] [stdout]    --> src/json/de.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn match_number(&mut self) -> Result<Number, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_integer`
[INFO] [stdout]    --> src/json/de.rs:408:12
[INFO] [stdout]     |
[INFO] [stdout] 408 |     pub fn match_integer(&mut self) -> Result<u32, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_true`
[INFO] [stdout]    --> src/json/de.rs:440:12
[INFO] [stdout]     |
[INFO] [stdout] 440 |     pub fn match_true(&mut self) -> Result<bool, String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_letter`
[INFO] [stdout]    --> src/json/de.rs:470:12
[INFO] [stdout]     |
[INFO] [stdout] 470 |     pub fn match_letter(&mut self) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_digit`
[INFO] [stdout]    --> src/json/de.rs:485:12
[INFO] [stdout]     |
[INFO] [stdout] 485 |     pub fn match_digit(&mut self) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_spec_char`
[INFO] [stdout]    --> src/json/de.rs:500:12
[INFO] [stdout]     |
[INFO] [stdout] 500 |     pub fn match_spec_char(&mut self, ic: char) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:144:29
[INFO] [stdout]     |
[INFO] [stdout] 144 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:207:29
[INFO] [stdout]     |
[INFO] [stdout] 207 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `code`
[INFO] [stdout]    --> src/json/de.rs:214:28
[INFO] [stdout]     |
[INFO] [stdout] 214 |                         Ok(code) => {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |             Err(message) => {
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:305:29
[INFO] [stdout]     |
[INFO] [stdout] 305 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:327:18
[INFO] [stdout]     |
[INFO] [stdout] 327 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:336:29
[INFO] [stdout]     |
[INFO] [stdout] 336 |                         Err(message) => {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:352:18
[INFO] [stdout]     |
[INFO] [stdout] 352 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/json/de.rs:373:37
[INFO] [stdout]     |
[INFO] [stdout] 373 | ...                   Err(message) => {
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:410:18
[INFO] [stdout]     |
[INFO] [stdout] 410 |             Some(c) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/json/de.rs:442:16
[INFO] [stdout]     |
[INFO] [stdout] 442 |             Ok(c) => {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/json/de.rs:412:21
[INFO] [stdout]     |
[INFO] [stdout] 412 |                 let mut count: u16 = 0;
[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: struct is never constructed: `Element`
[INFO] [stdout]  --> src/json/element.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Element {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PosInt`
[INFO] [stdout]  --> src/json/value/number.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     PosInt(u64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NegInt`
[INFO] [stdout]  --> src/json/value/number.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     NegInt(i64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Float`
[INFO] [stdout]  --> src/json/value/number.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Float(f64),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Null`
[INFO] [stdout]   --> src/json/value/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Null,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]   --> src/json/value/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Number(Number),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]   --> src/json/value/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     String(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Array`
[INFO] [stdout]   --> src/json/value/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Array(Vec<Value>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Object`
[INFO] [stdout]   --> src/json/value/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Object(HashMap<String, Value>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `index_into`
[INFO] [stdout]   --> src/json/value/mod.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn index_into<I: Index>(&self, i: I) -> Option<&Value> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_null`
[INFO] [stdout]   --> src/json/value/mod.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn is_null(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn as_boolean(&self) -> Option<bool> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_boolean`
[INFO] [stdout]   --> src/json/value/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn is_boolean(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_number`
[INFO] [stdout]   --> src/json/value/mod.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn as_number(&self) -> Option<&Number> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_number`
[INFO] [stdout]   --> src/json/value/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn is_number(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_str`
[INFO] [stdout]   --> src/json/value/mod.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn as_str(&self) -> Option<&str> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_string`
[INFO] [stdout]   --> src/json/value/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn is_string(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_array`
[INFO] [stdout]   --> src/json/value/mod.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn as_array(&self) -> Option<&Vec<Value>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_array`
[INFO] [stdout]   --> src/json/value/mod.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn is_array(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_object`
[INFO] [stdout]   --> src/json/value/mod.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn as_object(&self) -> Option<&HashMap<String, Value>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_object`
[INFO] [stdout]   --> src/json/value/mod.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn is_object(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `De`
[INFO] [stdout]  --> src/json/de.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct De<'a> {
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/json/de.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(str: &String) -> De {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialization`
[INFO] [stdout]   --> src/json/de.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn deserialization(&mut self) -> Result<Value, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/json/de.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn next(&mut self) -> Option<char> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ignore_space`
[INFO] [stdout]   --> src/json/de.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn ignore_space(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_value`
[INFO] [stdout]   --> src/json/de.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn match_value(&mut self) -> Result<Value, String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_object`
[INFO] [stdout]    --> src/json/de.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn match_object(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_members`
[INFO] [stdout]    --> src/json/de.rs:195:12
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn match_members(&mut self) -> Result<HashMap<String, Value>, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_member`
[INFO] [stdout]    --> src/json/de.rs:226:12
[INFO] [stdout]     |
[INFO] [stdout] 226 |     pub fn match_member(&mut self) -> Result<(String, Value), Result<u8, String>> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_array`
[INFO] [stdout]    --> src/json/de.rs:262:12
[INFO] [stdout]     |
[INFO] [stdout] 262 |     pub fn match_array(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_elements`
[INFO] [stdout]    --> src/json/de.rs:293:12
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn match_elements(&mut self) -> Result<Vec<Value>, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_element`
[INFO] [stdout]    --> src/json/de.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 |     pub fn match_element(&mut self) -> Result<Value, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_string`
[INFO] [stdout]    --> src/json/de.rs:325:12
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn match_string(&mut self) -> Result<String, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_number`
[INFO] [stdout]    --> src/json/de.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn match_number(&mut self) -> Result<Number, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_integer`
[INFO] [stdout]    --> src/json/de.rs:408:12
[INFO] [stdout]     |
[INFO] [stdout] 408 |     pub fn match_integer(&mut self) -> Result<u32, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_true`
[INFO] [stdout]    --> src/json/de.rs:440:12
[INFO] [stdout]     |
[INFO] [stdout] 440 |     pub fn match_true(&mut self) -> Result<bool, String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_letter`
[INFO] [stdout]    --> src/json/de.rs:470:12
[INFO] [stdout]     |
[INFO] [stdout] 470 |     pub fn match_letter(&mut self) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_digit`
[INFO] [stdout]    --> src/json/de.rs:485:12
[INFO] [stdout]     |
[INFO] [stdout] 485 |     pub fn match_digit(&mut self) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_spec_char`
[INFO] [stdout]    --> src/json/de.rs:500:12
[INFO] [stdout]     |
[INFO] [stdout] 500 |     pub fn match_spec_char(&mut self, ic: char) -> Result<char, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "6556ba8a7eb9314e1cd0c7dafea3eb133a9a266cc915cf505daefafb084d5efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6556ba8a7eb9314e1cd0c7dafea3eb133a9a266cc915cf505daefafb084d5efe", kill_on_drop: false }`
[INFO] [stdout] 6556ba8a7eb9314e1cd0c7dafea3eb133a9a266cc915cf505daefafb084d5efe