[INFO] fetching crate m_lexer 0.0.4...
[INFO] documenting m_lexer-0.0.4 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate m_lexer 0.0.4 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate m_lexer 0.0.4 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate m_lexer 0.0.4
[INFO] finished tweaking crates.io crate m_lexer 0.0.4
[INFO] tweaked toml for crates.io crate m_lexer 0.0.4 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4b6e069e6b743ff8ea671eab9874f866f9ccfb1a9a4da638f2b4a887a17723d
[INFO] running `Command { std: "docker" "start" "-a" "b4b6e069e6b743ff8ea671eab9874f866f9ccfb1a9a4da638f2b4a887a17723d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4b6e069e6b743ff8ea671eab9874f866f9ccfb1a9a4da638f2b4a887a17723d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b6e069e6b743ff8ea671eab9874f866f9ccfb1a9a4da638f2b4a887a17723d", kill_on_drop: false }`
[INFO] [stdout] b4b6e069e6b743ff8ea671eab9874f866f9ccfb1a9a4da638f2b4a887a17723d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a8dbef7ee4e28691dddb9a16ce79f93756d01bb398c00a6145798703cd8c5a6
[INFO] running `Command { std: "docker" "start" "-a" "6a8dbef7ee4e28691dddb9a16ce79f93756d01bb398c00a6145798703cd8c5a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]  Documenting m_lexer v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:75:50
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn valid_token(&self, input: &str) -> Option<(Token)> {
[INFO] [stdout]    |                                                  ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 -     fn valid_token(&self, input: &str) -> Option<(Token)> {
[INFO] [stdout] 75 +     fn valid_token(&self, input: &str) -> Option<Token> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `Command { std: "docker" "inspect" "6a8dbef7ee4e28691dddb9a16ce79f93756d01bb398c00a6145798703cd8c5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a8dbef7ee4e28691dddb9a16ce79f93756d01bb398c00a6145798703cd8c5a6", kill_on_drop: false }`
[INFO] [stdout] 6a8dbef7ee4e28691dddb9a16ce79f93756d01bb398c00a6145798703cd8c5a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 9c4997bbe63c439d245ac27f3b49817baf16f8d4167e94204f8a7a3e3b53ab07
[INFO] running `Command { std: "docker" "start" "-a" "9c4997bbe63c439d245ac27f3b49817baf16f8d4167e94204f8a7a3e3b53ab07", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]  Documenting m_lexer v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:75:50
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn valid_token(&self, input: &str) -> Option<(Token)> {
[INFO] [stdout]    |                                                  ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 75 -     fn valid_token(&self, input: &str) -> Option<(Token)> {
[INFO] [stdout] 75 +     fn valid_token(&self, input: &str) -> Option<Token> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.24s
[INFO] running `Command { std: "docker" "inspect" "9c4997bbe63c439d245ac27f3b49817baf16f8d4167e94204f8a7a3e3b53ab07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4997bbe63c439d245ac27f3b49817baf16f8d4167e94204f8a7a3e3b53ab07", kill_on_drop: false }`
[INFO] [stdout] 9c4997bbe63c439d245ac27f3b49817baf16f8d4167e94204f8a7a3e3b53ab07