[INFO] updating cached repository https://github.com/modulitos/rust-parser-combinators
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2dc87697dd188220520302a805560bbec514d13f
[INFO] checking modulitos/rust-parser-combinators against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodulitos%2Frust-parser-combinators" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/modulitos/rust-parser-combinators on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/modulitos/rust-parser-combinators
[INFO] finished tweaking git repo https://github.com/modulitos/rust-parser-combinators
[INFO] tweaked toml for git repo https://github.com/modulitos/rust-parser-combinators written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/modulitos/rust-parser-combinators already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a32f4fddc478ecd280d1a6866ae24f5e6a912d0ac4aa2388ce5e5cab8528771
[INFO] running `"docker" "start" "-a" "5a32f4fddc478ecd280d1a6866ae24f5e6a912d0ac4aa2388ce5e5cab8528771"`
[INFO] [stderr]     Checking parser-combinator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | /     fn new<P>(parser: P) -> Self
[INFO] [stderr] 14 | |     where
[INFO] [stderr] 15 | |         P: Parser<'a, Output> + 'a,
[INFO] [stderr] 16 | |     {
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |         }
[INFO] [stderr] 20 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_literal`
[INFO] [stderr]   --> src/lib.rs:78:1
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn match_literal<'a>(expected: &'static str) -> impl Parser<'a, ()> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `identifier`
[INFO] [stderr]   --> src/lib.rs:99:1
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn identifier(input: &str) -> ParseResult<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pair`
[INFO] [stderr]    --> src/lib.rs:136:1
[INFO] [stderr]     |
[INFO] [stderr] 136 | / fn pair<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stderr] 137 | | where
[INFO] [stderr] 138 | |     P1: Parser<'a, R1>,
[INFO] [stderr] 139 | |     P2: Parser<'a, R2>,
[INFO] [stderr] ...   |
[INFO] [stderr] 147 | |     }
[INFO] [stderr] 148 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `map`
[INFO] [stderr]    --> src/lib.rs:161:1
[INFO] [stderr]     |
[INFO] [stderr] 161 | / fn map<'a, P, F, A, B>(parser: P, map_fn: F) -> impl Parser<'a, B>
[INFO] [stderr] 162 | | where
[INFO] [stderr] 163 | |     P: Parser<'a, A>,
[INFO] [stderr] 164 | |     F: Fn(A) -> B,
[INFO] [stderr] ...   |
[INFO] [stderr] 171 | |     }
[INFO] [stderr] 172 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `left`
[INFO] [stderr]    --> src/lib.rs:174:1
[INFO] [stderr]     |
[INFO] [stderr] 174 | / fn left<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, R1>
[INFO] [stderr] 175 | | where
[INFO] [stderr] 176 | |     P1: Parser<'a, R1>,
[INFO] [stderr] 177 | |     P2: Parser<'a, R2>,
[INFO] [stderr] 178 | | {
[INFO] [stderr] 179 | |     map(pair(parser1, parser2), |(left, _right)| left)
[INFO] [stderr] 180 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `right`
[INFO] [stderr]    --> src/lib.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | / fn right<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, R2>
[INFO] [stderr] 183 | | where
[INFO] [stderr] 184 | |     P1: Parser<'a, R1>,
[INFO] [stderr] 185 | |     P2: Parser<'a, R2>,
[INFO] [stderr] 186 | | {
[INFO] [stderr] 187 | |     map(pair(parser1, parser2), |(_left, right)| right)
[INFO] [stderr] 188 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `one_or_more`
[INFO] [stderr]    --> src/lib.rs:204:1
[INFO] [stderr]     |
[INFO] [stderr] 204 | / fn one_or_more<'a, P, A>(parser: P) -> impl Parser<'a, Vec<A>>
[INFO] [stderr] 205 | | where
[INFO] [stderr] 206 | |     P: Parser<'a, A>,
[INFO] [stderr] 207 | | {
[INFO] [stderr] ...   |
[INFO] [stderr] 224 | |     }
[INFO] [stderr] 225 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zero_or_more`
[INFO] [stderr]    --> src/lib.rs:227:1
[INFO] [stderr]     |
[INFO] [stderr] 227 | / fn zero_or_more<'a, P, A>(parser: P) -> impl Parser<'a, Vec<A>>
[INFO] [stderr] 228 | | where
[INFO] [stderr] 229 | |     P: Parser<'a, A>,
[INFO] [stderr] 230 | | {
[INFO] [stderr] ...   |
[INFO] [stderr] 240 | |     }
[INFO] [stderr] 241 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `any_char`
[INFO] [stderr]    --> src/lib.rs:264:1
[INFO] [stderr]     |
[INFO] [stderr] 264 | fn any_char(input: &str) -> ParseResult<char> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pred`
[INFO] [stderr]    --> src/lib.rs:272:1
[INFO] [stderr]     |
[INFO] [stderr] 272 | / fn pred<'a, P, A, F>(parser: P, predicate: F) -> impl Parser<'a, A>
[INFO] [stderr] 273 | | where
[INFO] [stderr] 274 | |     P: Parser<'a, A>,
[INFO] [stderr] 275 | |     F: Fn(&A) -> bool,
[INFO] [stderr] ...   |
[INFO] [stderr] 284 | |     }
[INFO] [stderr] 285 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `whitespace_char`
[INFO] [stderr]    --> src/lib.rs:295:1
[INFO] [stderr]     |
[INFO] [stderr] 295 | fn whitespace_char<'a>() -> impl Parser<'a, char> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `space1`
[INFO] [stderr]    --> src/lib.rs:299:1
[INFO] [stderr]     |
[INFO] [stderr] 299 | fn space1<'a>() -> impl Parser<'a, Vec<char>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `space0`
[INFO] [stderr]    --> src/lib.rs:303:1
[INFO] [stderr]     |
[INFO] [stderr] 303 | fn space0<'a>() -> impl Parser<'a, Vec<char>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quoted_string`
[INFO] [stderr]    --> src/lib.rs:310:1
[INFO] [stderr]     |
[INFO] [stderr] 310 | fn quoted_string<'a>() -> impl Parser<'a, String> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `attribute_pair`
[INFO] [stderr]    --> src/lib.rs:333:1
[INFO] [stderr]     |
[INFO] [stderr] 333 | fn attribute_pair<'a>() -> impl Parser<'a, (String, String)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `attributes`
[INFO] [stderr]    --> src/lib.rs:337:1
[INFO] [stderr]     |
[INFO] [stderr] 337 | fn attributes<'a>() -> impl Parser<'a, Vec<(String, String)>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `element_start`
[INFO] [stderr]    --> src/lib.rs:355:1
[INFO] [stderr]     |
[INFO] [stderr] 355 | fn element_start<'a>() -> impl Parser<'a, (String, Vec<(String, String)>)> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `single_element`
[INFO] [stderr]    --> src/lib.rs:359:1
[INFO] [stderr]     |
[INFO] [stderr] 359 | fn single_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `open_element`
[INFO] [stderr]    --> src/lib.rs:390:1
[INFO] [stderr]     |
[INFO] [stderr] 390 | fn open_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `either`
[INFO] [stderr]    --> src/lib.rs:398:1
[INFO] [stderr]     |
[INFO] [stderr] 398 | / fn either<'a, P1, P2, A>(parser1: P1, parser2: P2) -> impl Parser<'a, A>
[INFO] [stderr] 399 | | where
[INFO] [stderr] 400 | |     P1: Parser<'a, A>,
[INFO] [stderr] 401 | |     P2: Parser<'a, A>,
[INFO] [stderr] ...   |
[INFO] [stderr] 406 | |     }
[INFO] [stderr] 407 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `close_element`
[INFO] [stderr]    --> src/lib.rs:409:1
[INFO] [stderr]     |
[INFO] [stderr] 409 | fn close_element<'a>(expected_name: String) -> impl Parser<'a, String> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `and_then`
[INFO] [stderr]    --> src/lib.rs:425:1
[INFO] [stderr]     |
[INFO] [stderr] 425 | / fn and_then<'a, A, P, B, NextP, F>(parser: P, f: F) -> impl Parser<'a, B>
[INFO] [stderr] 426 | | where
[INFO] [stderr] 427 | |     P: Parser<'a, A>,
[INFO] [stderr] 428 | |     NextP: Parser<'a, B>,
[INFO] [stderr] ...   |
[INFO] [stderr] 434 | |     }
[INFO] [stderr] 435 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parent_element`
[INFO] [stderr]    --> src/lib.rs:437:1
[INFO] [stderr]     |
[INFO] [stderr] 437 | fn parent_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `whitespace_wrap`
[INFO] [stderr]    --> src/lib.rs:447:1
[INFO] [stderr]     |
[INFO] [stderr] 447 | / fn whitespace_wrap<'a, P, A>(parser: P) -> impl Parser<'a, A>
[INFO] [stderr] 448 | | where
[INFO] [stderr] 449 | |     P: Parser<'a, A>,
[INFO] [stderr] 450 | | {
[INFO] [stderr] 451 | |     right(space0(), left(parser, space0()))
[INFO] [stderr] 452 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `element`
[INFO] [stderr]    --> src/lib.rs:454:1
[INFO] [stderr]     |
[INFO] [stderr] 454 | fn element<'a>() -> impl Parser<'a, Element> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `"docker" "inspect" "5a32f4fddc478ecd280d1a6866ae24f5e6a912d0ac4aa2388ce5e5cab8528771"`
[INFO] running `"docker" "rm" "-f" "5a32f4fddc478ecd280d1a6866ae24f5e6a912d0ac4aa2388ce5e5cab8528771"`
[INFO] [stdout] 5a32f4fddc478ecd280d1a6866ae24f5e6a912d0ac4aa2388ce5e5cab8528771