[INFO] cloning repository https://github.com/suhanyujie/my-parser-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suhanyujie/my-parser-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Fmy-parser-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Fmy-parser-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6626273ff7835c49bb21834ef843da6b60cf7e29
[INFO] checking suhanyujie/my-parser-rs against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhanyujie%2Fmy-parser-rs" "/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/suhanyujie/my-parser-rs 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/suhanyujie/my-parser-rs
[INFO] finished tweaking git repo https://github.com/suhanyujie/my-parser-rs
[INFO] tweaked toml for git repo https://github.com/suhanyujie/my-parser-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/suhanyujie/my-parser-rs 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc1e74b45682a8ac3b55bacba2a60ad91d6addcf2c44985f20fafa603de66bb4
[INFO] running `Command { std: "docker" "start" "-a" "bc1e74b45682a8ac3b55bacba2a60ad91d6addcf2c44985f20fafa603de66bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc1e74b45682a8ac3b55bacba2a60ad91d6addcf2c44985f20fafa603de66bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc1e74b45682a8ac3b55bacba2a60ad91d6addcf2c44985f20fafa603de66bb4", kill_on_drop: false }`
[INFO] [stdout] bc1e74b45682a8ac3b55bacba2a60ad91d6addcf2c44985f20fafa603de66bb4
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5af87cff71a728ae832867ae87db103a95526c1729344afd01dbb60c2a69194
[INFO] running `Command { std: "docker" "start" "-a" "f5af87cff71a728ae832867ae87db103a95526c1729344afd01dbb60c2a69194", kill_on_drop: false }`
[INFO] [stderr]     Checking my-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `the_letter_a`
[INFO] [stdout]  --> src/lib.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn the_letter_a(input: &str) -> Result<(&str, ()), &str> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_literal`
[INFO] [stdout]   --> src/lib.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn match_literal(expected: &'static str) -> impl Fn(&str) -> Result<(&str, ()), &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identifier_v1`
[INFO] [stdout]   --> src/lib.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn identifier_v1(input: &str) -> Result<(&str, String), &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v1`
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn pair_v1<P1, P2, R1, R2>(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_v1`
[INFO] [stdout]   --> src/lib.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn map_v1<P, F, A, B>(parser: P, map_fn: F) -> impl Fn(&str) -> Result<(&str, B), &str>
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map`
[INFO] [stdout]    --> src/lib.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn map<'a, P, F, A, B>(parser: P, map_fn: F) -> impl Parser<'a, B>
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v2`
[INFO] [stdout]    --> src/lib.rs:133:4
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn pair_v2<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v3`
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn pair_v3<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair`
[INFO] [stdout]    --> src/lib.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn pair<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `left`
[INFO] [stdout]    --> src/lib.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn left<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, R1>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `right`
[INFO] [stdout]    --> src/lib.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn right<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, R2>
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identifier`
[INFO] [stdout]    --> src/lib.rs:204:4
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn identifier(input: &str) -> ParseResult<String> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `one_or_more`
[INFO] [stdout]    --> src/lib.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn one_or_more<'a, P, A>(parser: P) -> impl Parser<'a, Vec<A>>
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zero_or_more`
[INFO] [stdout]    --> src/lib.rs:242:4
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn zero_or_more<'a, P, A>(parser: P) -> impl Parser<'a, Vec<A>>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `any_char`
[INFO] [stdout]    --> src/lib.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn any_char(input: &str) -> ParseResult<char> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pred`
[INFO] [stdout]    --> src/lib.rs:274:4
[INFO] [stdout]     |
[INFO] [stdout] 274 | fn pred<'a, P, A, F>(parser: P, predicate: F) -> impl Parser<'a, A>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `whitespace_char`
[INFO] [stdout]    --> src/lib.rs:289:4
[INFO] [stdout]     |
[INFO] [stdout] 289 | fn whitespace_char<'a>() -> impl Parser<'a, char> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `space1`
[INFO] [stdout]    --> src/lib.rs:294:4
[INFO] [stdout]     |
[INFO] [stdout] 294 | fn space1<'a>() -> impl Parser<'a, Vec<char>> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `space0`
[INFO] [stdout]    --> src/lib.rs:299:4
[INFO] [stdout]     |
[INFO] [stdout] 299 | fn space0<'a>() -> impl Parser<'a, Vec<char>> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quoted_string_v1`
[INFO] [stdout]    --> src/lib.rs:304:4
[INFO] [stdout]     |
[INFO] [stdout] 304 | fn quoted_string_v1<'a>() -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `attribute_pair`
[INFO] [stdout]    --> src/lib.rs:317:4
[INFO] [stdout]     |
[INFO] [stdout] 317 | fn attribute_pair<'a>() -> impl Parser<'a, (String, String)> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `attributes`
[INFO] [stdout]    --> src/lib.rs:322:4
[INFO] [stdout]     |
[INFO] [stdout] 322 | fn attributes<'a>() -> impl Parser<'a, Vec<(String, String)>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element_start`
[INFO] [stdout]    --> src/lib.rs:326:4
[INFO] [stdout]     |
[INFO] [stdout] 326 | fn element_start<'a>() -> impl Parser<'a, (String, Vec<(String, String)>)> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:346:8
[INFO] [stdout]     |
[INFO] [stdout] 346 |     fn new<P>(parser: P) -> Self
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quoted_string`
[INFO] [stdout]    --> src/lib.rs:362:4
[INFO] [stdout]     |
[INFO] [stdout] 362 | fn quoted_string<'a>() -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `single_element`
[INFO] [stdout]    --> src/lib.rs:374:4
[INFO] [stdout]     |
[INFO] [stdout] 374 | fn single_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_element`
[INFO] [stdout]    --> src/lib.rs:382:4
[INFO] [stdout]     |
[INFO] [stdout] 382 | fn open_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `either`
[INFO] [stdout]    --> src/lib.rs:390:4
[INFO] [stdout]     |
[INFO] [stdout] 390 | fn either<'a, P1, P2, A>(parser1: P1, parser2: P2) -> impl Parser<'a, A>
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element_v1`
[INFO] [stdout]    --> src/lib.rs:401:4
[INFO] [stdout]     |
[INFO] [stdout] 401 | fn element_v1<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_element`
[INFO] [stdout]    --> src/lib.rs:405:4
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn close_element<'a>(expected_name: String) -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and_then`
[INFO] [stdout]    --> src/lib.rs:417:4
[INFO] [stdout]     |
[INFO] [stdout] 417 | fn and_then<'a, P, F, A, B, NextP>(parser: P, f: F) -> impl Parser<'a, B>
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parent_element`
[INFO] [stdout]    --> src/lib.rs:429:4
[INFO] [stdout]     |
[INFO] [stdout] 429 | fn parent_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `whitespace_wrap`
[INFO] [stdout]    --> src/lib.rs:439:4
[INFO] [stdout]     |
[INFO] [stdout] 439 | fn whitespace_wrap<'a, P, A>(parser: P) -> impl Parser<'a, A>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element`
[INFO] [stdout]    --> src/lib.rs:446:4
[INFO] [stdout]     |
[INFO] [stdout] 446 | fn element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identifier_v1`
[INFO] [stdout]   --> src/lib.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn identifier_v1(input: &str) -> Result<(&str, String), &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v1`
[INFO] [stdout]   --> src/lib.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn pair_v1<P1, P2, R1, R2>(
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_v1`
[INFO] [stdout]   --> src/lib.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn map_v1<P, F, A, B>(parser: P, map_fn: F) -> impl Fn(&str) -> Result<(&str, B), &str>
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v2`
[INFO] [stdout]    --> src/lib.rs:133:4
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn pair_v2<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_v3`
[INFO] [stdout]    --> src/lib.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn pair_v3<'a, P1, P2, R1, R2>(parser1: P1, parser2: P2) -> impl Parser<'a, (R1, R2)>
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quoted_string_v1`
[INFO] [stdout]    --> src/lib.rs:304:4
[INFO] [stdout]     |
[INFO] [stdout] 304 | fn quoted_string_v1<'a>() -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `element_v1`
[INFO] [stdout]    --> src/lib.rs:401:4
[INFO] [stdout]     |
[INFO] [stdout] 401 | fn element_v1<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `close_element`
[INFO] [stdout]    --> src/lib.rs:405:4
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn close_element<'a>(expected_name: String) -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and_then`
[INFO] [stdout]    --> src/lib.rs:417:4
[INFO] [stdout]     |
[INFO] [stdout] 417 | fn and_then<'a, P, F, A, B, NextP>(parser: P, f: F) -> impl Parser<'a, B>
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parent_element`
[INFO] [stdout]    --> src/lib.rs:429:4
[INFO] [stdout]     |
[INFO] [stdout] 429 | fn parent_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "f5af87cff71a728ae832867ae87db103a95526c1729344afd01dbb60c2a69194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5af87cff71a728ae832867ae87db103a95526c1729344afd01dbb60c2a69194", kill_on_drop: false }`
[INFO] [stdout] f5af87cff71a728ae832867ae87db103a95526c1729344afd01dbb60c2a69194