[INFO] cloning repository https://github.com/exphp-share/exploding-types
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/exphp-share/exploding-types" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Fexploding-types", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Fexploding-types'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffd9501eb0be97df222f36e69ba665ecb1005f39
[INFO] checking exphp-share/exploding-types against 760e1de835e253bf28bbcbfee38b5e8ed9ffe074 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Fexploding-types" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/exphp-share/exploding-types
[INFO] finished tweaking git repo https://github.com/exphp-share/exploding-types
[INFO] tweaked toml for git repo https://github.com/exphp-share/exploding-types written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/exphp-share/exploding-types on toolchain 760e1de835e253bf28bbcbfee38b5e8ed9ffe074
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/exphp-share/exploding-types 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" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf
[INFO] running `Command { std: "docker" "start" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf" "/opt/rustwide/cargo-home/bin/cargo" "+760e1de835e253bf28bbcbfee38b5e8ed9ffe074" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking explode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:217:21
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn parse(&self, mut input: &'a str) -> ParseResult<'a, Self::Output> {
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated type `Parser::Output` is more private than the item `OutTy`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type OutTy<'a, P> = <P as Parser<'a>>::Output;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ type alias `OutTy` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but associated type `Parser::Output` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     type Output;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser<'a>` is more private than the item `OutTy`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type OutTy<'a, P> = <P as Parser<'a>>::Output;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ type alias `OutTy` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `Parser<'a>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser<'a>` is more private than the item `single_element`
[INFO] [stdout]    --> src/main.rs:288:1
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn single_element<'a>() -> impl Parser<'a, Output=Element> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `single_element` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but trait `Parser<'a>` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/main.rs:10:1
[INFO] [stdout]     |
[INFO] [stdout]  10 | trait Parser<'a> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Space0` is never used
[INFO] [stdout]    --> src/main.rs:239:6
[INFO] [stdout]     |
[INFO] [stdout] 239 | type Space0 = ZeroOrMore<WhitespaceChar>;
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `space0` is never used
[INFO] [stdout]    --> src/main.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn space0() -> Space0 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/main.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn identifier(input: &str) -> ParseResult<String> {
[INFO] [stdout]    |                      ^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn identifier(input: &str) -> ParseResult<'_, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:196:20
[INFO] [stdout]     |
[INFO] [stdout] 196 | fn any_char(input: &str) -> ParseResult<char> {
[INFO] [stdout]     |                    ^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[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] 196 | fn any_char(input: &str) -> ParseResult<'_, char> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:217:21
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn parse(&self, mut input: &'a str) -> ParseResult<'a, Self::Output> {
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated type `Parser::Output` is more private than the item `OutTy`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type OutTy<'a, P> = <P as Parser<'a>>::Output;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ type alias `OutTy` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but associated type `Parser::Output` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     type Output;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser<'a>` is more private than the item `OutTy`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type OutTy<'a, P> = <P as Parser<'a>>::Output;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ type alias `OutTy` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `Parser<'a>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait Parser<'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Parser<'a>` is more private than the item `single_element`
[INFO] [stdout]    --> src/main.rs:288:1
[INFO] [stdout]     |
[INFO] [stdout] 288 | pub fn single_element<'a>() -> impl Parser<'a, Output=Element> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `single_element` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but trait `Parser<'a>` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/main.rs:10:1
[INFO] [stdout]     |
[INFO] [stdout]  10 | trait Parser<'a> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse` is never used
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait Parser<'a> {
[INFO] [stdout]    |       ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn parse(&self, input: &'a str) -> ParseResult<'a, Self::Output>;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parser` and `map_fn` are never read
[INFO] [stdout]   --> src/main.rs:37:20
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Map<P, F> { parser: P, map_fn: F }
[INFO] [stdout]    |        ---         ^^^^^^     ^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parser1` and `parser2` are never read
[INFO] [stdout]   --> src/main.rs:60:23
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct Pair<P1, P2> { parser1: P1, parser2: P2 }
[INFO] [stdout]    |        ----           ^^^^^^^      ^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `expected` is never read
[INFO] [stdout]    --> src/main.rs:121:23
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct MatchLiteral { expected: &'static str }
[INFO] [stdout]     |        ------------   ^^^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parser` is never read
[INFO] [stdout]    --> src/main.rs:139:23
[INFO] [stdout]     |
[INFO] [stdout] 139 | struct OneOrMore<P> { parser: P }
[INFO] [stdout]     |        ---------      ^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parser` is never read
[INFO] [stdout]    --> src/main.rs:173:24
[INFO] [stdout]     |
[INFO] [stdout] 173 | struct ZeroOrMore<P> { parser: P }
[INFO] [stdout]     |        ----------      ^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        field in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parser` and `predicate` are never read
[INFO] [stdout]    --> src/main.rs:209:21
[INFO] [stdout]     |
[INFO] [stdout] 209 | struct Pred<P, F> { parser: P, predicate: F }
[INFO] [stdout]     |        ----         ^^^^^^     ^^^^^^^^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        fields in this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Space0` is never used
[INFO] [stdout]    --> src/main.rs:239:6
[INFO] [stdout]     |
[INFO] [stdout] 239 | type Space0 = ZeroOrMore<WhitespaceChar>;
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `space0` is never used
[INFO] [stdout]    --> src/main.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn space0() -> Space0 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/main.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn identifier(input: &str) -> ParseResult<String> {
[INFO] [stdout]    |                      ^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn identifier(input: &str) -> ParseResult<'_, String> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:196:20
[INFO] [stdout]     |
[INFO] [stdout] 196 | fn any_char(input: &str) -> ParseResult<char> {
[INFO] [stdout]     |                    ^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[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] 196 | fn any_char(input: &str) -> ParseResult<'_, char> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf", kill_on_drop: false }`
[INFO] [stdout] 3c9d9fe1cdb1f35fb383c0467128ea41174324e18751cf34615c65a8161babdf
