[INFO] fetching crate lts 0.3.1...
[INFO] documenting lts-0.3.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate lts 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lts 0.3.1 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 lts 0.3.1
[INFO] finished tweaking crates.io crate lts 0.3.1
[INFO] tweaked toml for crates.io crate lts 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate lts 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0efc6a876b4bbcf31159293950eec516322d033efecd033e629ea35c90caf955
[INFO] running `Command { std: "docker" "start" "-a" "0efc6a876b4bbcf31159293950eec516322d033efecd033e629ea35c90caf955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0efc6a876b4bbcf31159293950eec516322d033efecd033e629ea35c90caf955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efc6a876b4bbcf31159293950eec516322d033efecd033e629ea35c90caf955", kill_on_drop: false }`
[INFO] [stdout] 0efc6a876b4bbcf31159293950eec516322d033efecd033e629ea35c90caf955
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 93e76d4b530cca671cfc9eb8838a85b58add6d006512605790a9f90c941e606c
[INFO] running `Command { std: "docker" "start" "-a" "93e76d4b530cca671cfc9eb8838a85b58add6d006512605790a9f90c941e606c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]  Documenting lts v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lts v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/regfork.rs:318:21
[INFO] [stdout]     |
[INFO] [stdout] 318 |         if let Some(path) = CargoConfig::cargo_private_custom_git_repo_path(&self.git_checkout) {
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.59s
[INFO] running `Command { std: "docker" "inspect" "93e76d4b530cca671cfc9eb8838a85b58add6d006512605790a9f90c941e606c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e76d4b530cca671cfc9eb8838a85b58add6d006512605790a9f90c941e606c", kill_on_drop: false }`
[INFO] [stdout] 93e76d4b530cca671cfc9eb8838a85b58add6d006512605790a9f90c941e606c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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] eb3c3d7590dcee795e318db1a4c69acd865ba761d029c1ba147c086011233beb
[INFO] running `Command { std: "docker" "start" "-a" "eb3c3d7590dcee795e318db1a4c69acd865ba761d029c1ba147c086011233beb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]  Documenting lts v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.91s
[INFO] running `Command { std: "docker" "inspect" "eb3c3d7590dcee795e318db1a4c69acd865ba761d029c1ba147c086011233beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3c3d7590dcee795e318db1a4c69acd865ba761d029c1ba147c086011233beb", kill_on_drop: false }`
[INFO] [stdout] eb3c3d7590dcee795e318db1a4c69acd865ba761d029c1ba147c086011233beb