[INFO] fetching crate flexiber 0.1.0...
[INFO] documenting flexiber-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate flexiber 0.1.0 into /workspace/builds/worker-71/source
[INFO] validating manifest of crates.io crate flexiber 0.1.0 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 flexiber 0.1.0
[INFO] finished tweaking crates.io crate flexiber 0.1.0
[INFO] tweaked toml for crates.io crate flexiber 0.1.0 written to /workspace/builds/worker-71/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 537b05fbd7e5d9dad5c9bd1c7ae2055646b1462c9ce867280bd5d08e766270b6
[INFO] running `Command { std: "docker" "start" "-a" "537b05fbd7e5d9dad5c9bd1c7ae2055646b1462c9ce867280bd5d08e766270b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537b05fbd7e5d9dad5c9bd1c7ae2055646b1462c9ce867280bd5d08e766270b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537b05fbd7e5d9dad5c9bd1c7ae2055646b1462c9ce867280bd5d08e766270b6", kill_on_drop: false }`
[INFO] [stdout] 537b05fbd7e5d9dad5c9bd1c7ae2055646b1462c9ce867280bd5d08e766270b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 5129c48b6541423b5b019251a945f00205761cbe0f30c3e75b6b639a2996a635
[INFO] running `Command { std: "docker" "start" "-a" "5129c48b6541423b5b019251a945f00205761cbe0f30c3e75b6b639a2996a635", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling delog v0.1.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]  Documenting flexiber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] [stdout] warning: unresolved link to `Tag`
[INFO] [stdout]   --> src/header.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 |     /// Create a new [`Header`] from a [`Tag`] and a specified length.
[INFO] [stdout]    |                                          ^^^ no item named `Tag` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Error`
[INFO] [stdout]   --> src/header.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     /// Returns [`Error`] if the length exceeds the limits of [`Length`]
[INFO] [stdout]    |                   ^^^^^ no item named `Error` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5129c48b6541423b5b019251a945f00205761cbe0f30c3e75b6b639a2996a635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5129c48b6541423b5b019251a945f00205761cbe0f30c3e75b6b639a2996a635", kill_on_drop: false }`
[INFO] [stdout] 5129c48b6541423b5b019251a945f00205761cbe0f30c3e75b6b639a2996a635
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 042b6b3f5b707207f679ddf162ac04e20e91181fa29445cc80f5fcb5132bacd6
[INFO] running `Command { std: "docker" "start" "-a" "042b6b3f5b707207f679ddf162ac04e20e91181fa29445cc80f5fcb5132bacd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling delog v0.1.4
[INFO] [stderr]  Documenting flexiber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Tag`
[INFO] [stdout]   --> src/header.rs:17:42
[INFO] [stdout]    |
[INFO] [stdout] 17 |     /// Create a new [`Header`] from a [`Tag`] and a specified length.
[INFO] [stdout]    |                                          ^^^ no item named `Tag` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Error`
[INFO] [stdout]   --> src/header.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     /// Returns [`Error`] if the length exceeds the limits of [`Length`]
[INFO] [stdout]    |                   ^^^^^ no item named `Error` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "042b6b3f5b707207f679ddf162ac04e20e91181fa29445cc80f5fcb5132bacd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "042b6b3f5b707207f679ddf162ac04e20e91181fa29445cc80f5fcb5132bacd6", kill_on_drop: false }`
[INFO] [stdout] 042b6b3f5b707207f679ddf162ac04e20e91181fa29445cc80f5fcb5132bacd6