[INFO] cloning repository https://github.com/Versalife/gravlax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Versalife/gravlax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVersalife%2Fgravlax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVersalife%2Fgravlax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a62c9202df786a33028bbb4a7b6776a34589480
[INFO] checking Versalife/gravlax against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVersalife%2Fgravlax" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Versalife/gravlax
[INFO] finished tweaking git repo https://github.com/Versalife/gravlax
[INFO] tweaked toml for git repo https://github.com/Versalife/gravlax written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Versalife/gravlax on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Versalife/gravlax 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcfe8ab9a4c38cf463fec82cec0d3b7b7cdb19dbb29a16439a211da033597116
[INFO] running `Command { std: "docker" "start" "-a" "dcfe8ab9a4c38cf463fec82cec0d3b7b7cdb19dbb29a16439a211da033597116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcfe8ab9a4c38cf463fec82cec0d3b7b7cdb19dbb29a16439a211da033597116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfe8ab9a4c38cf463fec82cec0d3b7b7cdb19dbb29a16439a211da033597116", kill_on_drop: false }`
[INFO] [stdout] dcfe8ab9a4c38cf463fec82cec0d3b7b7cdb19dbb29a16439a211da033597116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "7a6a67d8bf8f8b4731948dc12c9fda71092da8d3779cd9bab0d48e907911e9a8", kill_on_drop: false }`
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[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]   --> src/ast.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Expr {
[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 `LiteralVal` is never used
[INFO] [stdout]   --> src/ast.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum LiteralVal {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnOp` is never used
[INFO] [stdout]   --> src/ast.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum UnOp {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BinOp` is never used
[INFO] [stdout]   --> src/ast.rs:42:6
[INFO] [stdout]    |
[INFO] [stdout] 42 | enum BinOp {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Element` is never constructed
[INFO] [stdout]  --> src/parser.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Element {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParserOutput` is never constructed
[INFO] [stdout]   --> src/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct ParserOutput<I, O> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ParserError` is never used
[INFO] [stdout]   --> src/parser.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | type ParserError<'a> = &'a str;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ParseResult` is never used
[INFO] [stdout]   --> src/parser.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 | type ParseResult<'a, Input, Output> = Result<ParserOutput<Input, Output>, ParserError<'a>>;
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser` is never used
[INFO] [stdout]   --> src/parser.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | trait Parser<'a, Input, Output> {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BoxedParser` is never constructed
[INFO] [stdout]   --> src/parser.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | struct BoxedParser<'a, Input, Output> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/parser.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl<'a, Input, Output> BoxedParser<'a, Input, Output> {
[INFO] [stdout]    | ------------------------------------------------------ associated function in this implementation
[INFO] [stdout] 88 |     fn new<P: Parser<'a, Input, Output> + 'a>(parser: P) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `project_left` and `project_right` are never used
[INFO] [stdout]    --> src/parser.rs:99:8
[INFO] [stdout]     |
[INFO] [stdout]  95 | impl<'a, Input, P1Output, P2Output> BoxedParser<'a, Input, (P1Output, P2Output)> {
[INFO] [stdout]     | -------------------------------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  99 |     fn project_left(self) -> BoxedParser<'a, Input, P1Output>
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn project_right(self) -> BoxedParser<'a, Input, P2Output>
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]    --> src/parser.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn the_letter_a(input: &str) -> Result<ParserOutput<&str, ()>, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_literal` is never used
[INFO] [stdout]    --> src/parser.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn match_literal<'a>(expected: &'a str) -> impl Parser<'a, &str, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier` is never used
[INFO] [stdout]    --> src/parser.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn identifier(input: &str) -> ParseResult<&str, String> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pair` is never used
[INFO] [stdout]    --> src/parser.rs:213:4
[INFO] [stdout]     |
[INFO] [stdout] 213 | fn pair<'a, P1, P2, R1, R2>(first_parser: P1, second_parser: P2) -> impl Parser<'a, &'a str, (R1, R2)>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `map` is never used
[INFO] [stdout]    --> src/parser.rs:262:4
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn map<'a, P, F, A, B>(parser: P, map_fn: F) -> impl Parser<'a, &'a str, B>
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project_left` is never used
[INFO] [stdout]    --> src/parser.rs:277:4
[INFO] [stdout]     |
[INFO] [stdout] 277 | fn project_left<'a, P1, P2, R1, R2>(first_parser: P1, second_parser: P2) -> impl Parser<'a, &'a str, R1>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project_right` is never used
[INFO] [stdout]    --> src/parser.rs:288:4
[INFO] [stdout]     |
[INFO] [stdout] 288 | fn project_right<'a, P1, P2, R1, R2>(first_parser: P1, second_parser: P2) -> impl Parser<'a, &'a str, R2>
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_or_more` is never used
[INFO] [stdout]    --> src/parser.rs:311:4
[INFO] [stdout]     |
[INFO] [stdout] 311 | fn one_or_more<'a, A>(parser: impl Parser<'a, &'a str, A>) -> impl Parser<'a, &'a str, Vec<A>> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zero_or_more` is never used
[INFO] [stdout]    --> src/parser.rs:343:4
[INFO] [stdout]     |
[INFO] [stdout] 343 | fn zero_or_more<'a, A>(parser: impl Parser<'a, &'a str, A>) -> impl Parser<'a, &'a str, Vec<A>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `any_char` is never used
[INFO] [stdout]    --> src/parser.rs:370:4
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn any_char(input: &str) -> ParseResult<&str, char> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `predicate` is never used
[INFO] [stdout]    --> src/parser.rs:377:4
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn predicate<'a, O, P, F>(parser: P, predicate: F) -> impl Parser<'a, &'a str, O>
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_single_whitespace` is never used
[INFO] [stdout]    --> src/parser.rs:405:4
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn eat_single_whitespace<'a>() -> impl Parser<'a, &'a str, char> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_or_more_whitespaces` is never used
[INFO] [stdout]    --> src/parser.rs:409:4
[INFO] [stdout]     |
[INFO] [stdout] 409 | fn one_or_more_whitespaces<'a>() -> impl Parser<'a, &'a str, Vec<char>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zero_or_more_whitespaces` is never used
[INFO] [stdout]    --> src/parser.rs:413:4
[INFO] [stdout]     |
[INFO] [stdout] 413 | fn zero_or_more_whitespaces<'a>() -> impl Parser<'a, &'a str, Vec<char>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_quoted_string` is never used
[INFO] [stdout]    --> src/parser.rs:417:4
[INFO] [stdout]     |
[INFO] [stdout] 417 | fn eat_quoted_string<'a>() -> impl Parser<'a, &'a str, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `AttributePair` is never used
[INFO] [stdout]    --> src/parser.rs:437:6
[INFO] [stdout]     |
[INFO] [stdout] 437 | type AttributePair = (String, String);
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_attribute_pair` is never used
[INFO] [stdout]    --> src/parser.rs:440:4
[INFO] [stdout]     |
[INFO] [stdout] 440 | fn eat_attribute_pair<'a>() -> impl Parser<'a, &'a str, AttributePair> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `AttributePairs` is never used
[INFO] [stdout]    --> src/parser.rs:444:6
[INFO] [stdout]     |
[INFO] [stdout] 444 | type AttributePairs = Vec<AttributePair>;
[INFO] [stdout]     |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_all_attribute_pairs` is never used
[INFO] [stdout]    --> src/parser.rs:447:4
[INFO] [stdout]     |
[INFO] [stdout] 447 | fn eat_all_attribute_pairs<'a>() -> impl Parser<'a, &'a str, AttributePairs> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `XmlElementStart` is never used
[INFO] [stdout]    --> src/parser.rs:467:6
[INFO] [stdout]     |
[INFO] [stdout] 467 | type XmlElementStart = (String, AttributePairs);
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_element_start` is never used
[INFO] [stdout]    --> src/parser.rs:468:4
[INFO] [stdout]     |
[INFO] [stdout] 468 | fn eat_element_start<'a>() -> impl Parser<'a, &'a str, XmlElementStart> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_single_element` is never used
[INFO] [stdout]    --> src/parser.rs:474:4
[INFO] [stdout]     |
[INFO] [stdout] 474 | fn parse_single_element<'a>() -> impl Parser<'a, &'a str, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/shared.rs:265:24
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub struct TokenStream(pub(crate) Vec<Token>);
[INFO] [stdout]     |            ----------- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `TokenStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:151:60
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn match_literal<'a>(expected: &'a str) -> impl Parser<'a, &str, ()> {
[INFO] [stdout]     |                                 --                     --  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                      |
[INFO] [stdout]     |                                 |                      the same lifetime is named here
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn match_literal<'a>(expected: &'a str) -> impl Parser<'a, &'a str, ()> {
[INFO] [stdout]     |                                                             ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn identifier(input: &str) -> ParseResult<&str, String> {
[INFO] [stdout]     |                      ^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                      |        |           |
[INFO] [stdout]     |                      |        |           the same lifetime is elided here
[INFO] [stdout]     |                      |        the same lifetime is hidden here
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn identifier(input: &str) -> ParseResult<'_, &str, String> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:370:20
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn any_char(input: &str) -> ParseResult<&str, char> {
[INFO] [stdout]     |                    ^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |        |           |
[INFO] [stdout]     |                    |        |           the same lifetime is elided here
[INFO] [stdout]     |                    |        the same lifetime is hidden here
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn any_char(input: &str) -> ParseResult<'_, &str, char> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]   --> src/ast.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Expr {
[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 `LiteralVal` is never used
[INFO] [stdout]   --> src/ast.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum LiteralVal {
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnOp` is never used
[INFO] [stdout]   --> src/ast.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum UnOp {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BinOp` is never used
[INFO] [stdout]   --> src/ast.rs:42:6
[INFO] [stdout]    |
[INFO] [stdout] 42 | enum BinOp {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `the_letter_a` is never used
[INFO] [stdout]    --> src/parser.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn the_letter_a(input: &str) -> Result<ParserOutput<&str, ()>, &str> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `zero_or_more_whitespaces` is never used
[INFO] [stdout]    --> src/parser.rs:413:4
[INFO] [stdout]     |
[INFO] [stdout] 413 | fn zero_or_more_whitespaces<'a>() -> impl Parser<'a, &'a str, Vec<char>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/shared.rs:265:24
[INFO] [stdout]     |
[INFO] [stdout] 265 | pub struct TokenStream(pub(crate) Vec<Token>);
[INFO] [stdout]     |            ----------- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `TokenStream` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:151:60
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn match_literal<'a>(expected: &'a str) -> impl Parser<'a, &str, ()> {
[INFO] [stdout]     |                                 --                     --  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                      |
[INFO] [stdout]     |                                 |                      the same lifetime is named here
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn match_literal<'a>(expected: &'a str) -> impl Parser<'a, &'a str, ()> {
[INFO] [stdout]     |                                                             ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn identifier(input: &str) -> ParseResult<&str, String> {
[INFO] [stdout]     |                      ^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                      |        |           |
[INFO] [stdout]     |                      |        |           the same lifetime is elided here
[INFO] [stdout]     |                      |        the same lifetime is hidden here
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn identifier(input: &str) -> ParseResult<'_, &str, String> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parser.rs:370:20
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn any_char(input: &str) -> ParseResult<&str, char> {
[INFO] [stdout]     |                    ^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |        |           |
[INFO] [stdout]     |                    |        |           the same lifetime is elided here
[INFO] [stdout]     |                    |        the same lifetime is hidden here
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn any_char(input: &str) -> ParseResult<'_, &str, char> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.33s
[INFO] running `Command { std: "docker" "inspect" "7a6a67d8bf8f8b4731948dc12c9fda71092da8d3779cd9bab0d48e907911e9a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a6a67d8bf8f8b4731948dc12c9fda71092da8d3779cd9bab0d48e907911e9a8", kill_on_drop: false }`
[INFO] [stdout] 7a6a67d8bf8f8b4731948dc12c9fda71092da8d3779cd9bab0d48e907911e9a8
