[INFO] cloning repository https://github.com/carlo-pignatiello/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/carlo-pignatiello/json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlo-pignatiello%2Fjson-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlo-pignatiello%2Fjson-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ed7ec6f16b551fbc8f0c0e70e6eaa1f40ed77b6
[INFO] checking carlo-pignatiello/json-parser against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarlo-pignatiello%2Fjson-parser" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/carlo-pignatiello/json-parser
[INFO] finished tweaking git repo https://github.com/carlo-pignatiello/json-parser
[INFO] tweaked toml for git repo https://github.com/carlo-pignatiello/json-parser written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/carlo-pignatiello/json-parser on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/carlo-pignatiello/json-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d9d44e34ba9bc23d3978e5a1f9dffff3a3fcf267e1223eff5727d993e5e8556
[INFO] running `Command { std: "docker" "start" "-a" "2d9d44e34ba9bc23d3978e5a1f9dffff3a3fcf267e1223eff5727d993e5e8556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d9d44e34ba9bc23d3978e5a1f9dffff3a3fcf267e1223eff5727d993e5e8556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9d44e34ba9bc23d3978e5a1f9dffff3a3fcf267e1223eff5727d993e5e8556", kill_on_drop: false }`
[INFO] [stdout] 2d9d44e34ba9bc23d3978e5a1f9dffff3a3fcf267e1223eff5727d993e5e8556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdc737e7678cec79dcff20d8ca53abe5acda88a38678877241b9067bc8972adf
[INFO] running `Command { std: "docker" "start" "-a" "bdc737e7678cec79dcff20d8ca53abe5acda88a38678877241b9067bc8972adf", kill_on_drop: false }`
[INFO] [stderr]     Checking json-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/parse.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             todo!("implement");
[INFO] [stdout]    |             ------------------ any code following this expression is unreachable
[INFO] [stdout] 13 |             is_escaping = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/tokenize.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         _ => todo!("implement other tokens"),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/tokenize.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |         '{' => Token::LeftBrace,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 118 |         '}' => Token::RightBrace,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 119 |         '[' => Token::LeftBracket,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 120 |         ']' => Token::RightBracket,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 129 |         _ => todo!("implement other tokens"),
[INFO] [stdout]     |         ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/parse.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |             todo!("implement");
[INFO] [stdout]    |             ------------------ any code following this expression is unreachable
[INFO] [stdout] 13 |             is_escaping = false;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:6:45
[INFO] [stdout]    |
[INFO] [stdout]  6 |   fn parse_string(input: &str) -> ParseResult {
[INFO] [stdout]    |  _____________________________________________^
[INFO] [stdout]  7 | |     let mut output = String::new();
[INFO] [stdout]  8 | |     let mut is_escaping = false;
[INFO] [stdout]  9 | |     let mut chars = input.chars();
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     Ok(Value::String(output))
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Ok(Value::String(output))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:24:86
[INFO] [stdout]    |
[INFO] [stdout] 24 |   fn parse_token(tokens: &[Token], index: &mut usize) -> Result<Value, TokenParseError>{
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 25 | |     let token = &tokens[*index];
[INFO] [stdout] 26 | |     match token {
[INFO] [stdout] 27 | |         Token::Null => todo!("implement null"),
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     match token {
[INFO] [stdout] 27 | |         Token::Null => todo!("implement null"),
[INFO] [stdout] 28 | |         Token::False => todo!("implement false"),
[INFO] [stdout] 29 | |         Token::True => todo!("implement true"),
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |         _ => todo!("implement other"),
[INFO] [stdout] 35 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Token::Number(number) => Ok(Value::Number(*number)),
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Token::String(string) => parse_string(string),
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:51:22
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let actual = parse_token(input, &mut 0).unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/tokenize.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         _ => todo!("implement other tokens"),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/tokenize.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |         '{' => Token::LeftBrace,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 118 |         '}' => Token::RightBrace,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 119 |         '[' => Token::LeftBracket,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] 120 |         ']' => Token::RightBracket,
[INFO] [stdout]     |         --- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 129 |         _ => todo!("implement other tokens"),
[INFO] [stdout]     |         ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/tokenize.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TokenizeError` is never used
[INFO] [stdout]   --> src/tokenize.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum TokenizeError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize_null` is never used
[INFO] [stdout]   --> src/tokenize.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn tokenize_null(char: &Vec<char>, index: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize_false` is never used
[INFO] [stdout]   --> src/tokenize.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn tokenize_false(chars: &Vec<char>, index: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize_true` is never used
[INFO] [stdout]   --> src/tokenize.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn tokenize_true(chars: &Vec<char>, index: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize_float` is never used
[INFO] [stdout]   --> src/tokenize.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn tokenize_float(chars: &Vec<char>, curr_idx: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize_string` is never used
[INFO] [stdout]   --> src/tokenize.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn tokenize_string(chars: &Vec<char>, index: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_token` is never used
[INFO] [stdout]    --> src/tokenize.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn make_token(chars: &Vec<char>, index: &mut usize) -> Result<Token, TokenizeError> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize` is never used
[INFO] [stdout]    --> src/tokenize.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | pub fn tokenize(input: String) -> Result<Vec<Token>, TokenizeError> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ParseResult` is never used
[INFO] [stdout]  --> src/parse.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type ParseResult = Result<Value, TokenParseError>;
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_string` is never used
[INFO] [stdout]  --> src/parse.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn parse_string(input: &str) -> ParseResult {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_token` is never used
[INFO] [stdout]   --> src/parse.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn parse_token(tokens: &[Token], index: &mut usize) -> Result<Value, TokenParseError>{
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TokenParseError` is never used
[INFO] [stdout]   --> src/parse.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub enum TokenParseError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-parser` (lib test) due to 7 previous errors; 2 warnings emitted
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:6:45
[INFO] [stdout]    |
[INFO] [stdout]  6 |   fn parse_string(input: &str) -> ParseResult {
[INFO] [stdout]    |  _____________________________________________^
[INFO] [stdout]  7 | |     let mut output = String::new();
[INFO] [stdout]  8 | |     let mut is_escaping = false;
[INFO] [stdout]  9 | |     let mut chars = input.chars();
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |     Ok(Value::String(output))
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Ok(Value::String(output))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:24:86
[INFO] [stdout]    |
[INFO] [stdout] 24 |   fn parse_token(tokens: &[Token], index: &mut usize) -> Result<Value, TokenParseError>{
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 25 | |     let token = &tokens[*index];
[INFO] [stdout] 26 | |     match token {
[INFO] [stdout] 27 | |         Token::Null => todo!("implement null"),
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     match token {
[INFO] [stdout] 27 | |         Token::Null => todo!("implement null"),
[INFO] [stdout] 28 | |         Token::False => todo!("implement false"),
[INFO] [stdout] 29 | |         Token::True => todo!("implement true"),
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |         _ => todo!("implement other"),
[INFO] [stdout] 35 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Token::Number(number) => Ok(Value::Number(*number)),
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Value, TokenParseError>
[INFO] [stdout]   --> src/parse.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Token::String(string) => parse_string(string),
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-parser` (lib) due to 6 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bdc737e7678cec79dcff20d8ca53abe5acda88a38678877241b9067bc8972adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdc737e7678cec79dcff20d8ca53abe5acda88a38678877241b9067bc8972adf", kill_on_drop: false }`
[INFO] [stdout] bdc737e7678cec79dcff20d8ca53abe5acda88a38678877241b9067bc8972adf
