[INFO] fetching crate slog 2.7.0...
[INFO] documenting slog-2.7.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate slog 2.7.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate slog 2.7.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-15/source/.cargo/config
[INFO] started tweaking crates.io crate slog 2.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate slog 2.7.0
[INFO] tweaked toml for crates.io crate slog 2.7.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate slog 2.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded erased-serde v0.3.3
[INFO] [stderr]   Downloaded serde v1.0.70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac1bc0f4801c273cd94cbfa84641e5f35303d8b2f9d197ebeb5a03e5bfc906d8
[INFO] running `Command { std: "docker" "start" "-a" "ac1bc0f4801c273cd94cbfa84641e5f35303d8b2f9d197ebeb5a03e5bfc906d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1bc0f4801c273cd94cbfa84641e5f35303d8b2f9d197ebeb5a03e5bfc906d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1bc0f4801c273cd94cbfa84641e5f35303d8b2f9d197ebeb5a03e5bfc906d8", kill_on_drop: false }`
[INFO] [stdout] ac1bc0f4801c273cd94cbfa84641e5f35303d8b2f9d197ebeb5a03e5bfc906d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 234e5016d46134c23561740deaf18b49eb902b6da6077f17ca2b27cc307ac73d
[INFO] running `Command { std: "docker" "start" "-a" "234e5016d46134c23561740deaf18b49eb902b6da6077f17ca2b27cc307ac73d", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting slog v2.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `no_std`
[INFO] [stdout]     --> src/lib.rs:3574:41
[INFO] [stdout]      |
[INFO] [stdout] 3574 |     /// `io::Error` (not available in ![no_std] mode)
[INFO] [stdout]      |                                         ^^^^^^ no item named `no_std` 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: this URL is not a hyperlink
[INFO] [stdout]     --> src/lib.rs:1333:30
[INFO] [stdout]      |
[INFO] [stdout] 1333 |     /// default to `()` once https://github.com/rust-lang/rust/issues/29661 is
[INFO] [stdout]      |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/rust-lang/rust/issues/29661>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]      = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]     --> src/lib.rs:1800:16
[INFO] [stdout]      |
[INFO] [stdout] 1800 | /// Reference: https://github.com/rust-lang/rust/issues/34511
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/rust-lang/rust/issues/34511>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "234e5016d46134c23561740deaf18b49eb902b6da6077f17ca2b27cc307ac73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "234e5016d46134c23561740deaf18b49eb902b6da6077f17ca2b27cc307ac73d", kill_on_drop: false }`
[INFO] [stdout] 234e5016d46134c23561740deaf18b49eb902b6da6077f17ca2b27cc307ac73d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "std nested-values dynamic-keys" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] fec853e7db8722ee6d957a0d8904233d47651e69d8bfabb075ce2d528ad25524
[INFO] running `Command { std: "docker" "start" "-a" "fec853e7db8722ee6d957a0d8904233d47651e69d8bfabb075ce2d528ad25524", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling slog v2.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking erased-serde v0.3.3
[INFO] [stderr]  Documenting slog v2.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `no_std`
[INFO] [stdout]     --> src/lib.rs:3574:41
[INFO] [stdout]      |
[INFO] [stdout] 3574 |     /// `io::Error` (not available in ![no_std] mode)
[INFO] [stdout]      |                                         ^^^^^^ no item named `no_std` 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: this URL is not a hyperlink
[INFO] [stdout]     --> src/lib.rs:1333:30
[INFO] [stdout]      |
[INFO] [stdout] 1333 |     /// default to `()` once https://github.com/rust-lang/rust/issues/29661 is
[INFO] [stdout]      |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/rust-lang/rust/issues/29661>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]      = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]     --> src/lib.rs:1800:16
[INFO] [stdout]      |
[INFO] [stdout] 1800 | /// Reference: https://github.com/rust-lang/rust/issues/34511
[INFO] [stdout]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/rust-lang/rust/issues/34511>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.60s
[INFO] running `Command { std: "docker" "inspect" "fec853e7db8722ee6d957a0d8904233d47651e69d8bfabb075ce2d528ad25524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec853e7db8722ee6d957a0d8904233d47651e69d8bfabb075ce2d528ad25524", kill_on_drop: false }`
[INFO] [stdout] fec853e7db8722ee6d957a0d8904233d47651e69d8bfabb075ce2d528ad25524