[INFO] fetching crate sibyl 0.6.6...
[INFO] documenting sibyl-0.6.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate sibyl 0.6.6 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate sibyl 0.6.6 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 sibyl 0.6.6
[INFO] finished tweaking crates.io crate sibyl 0.6.6
[INFO] tweaked toml for crates.io crate sibyl 0.6.6 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate sibyl 0.6.6 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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] bc0dd5887433065e6b94729b52240800219cb4e6f0a757b27cd9fb8d2a89bcd3
[INFO] running `Command { std: "docker" "start" "-a" "bc0dd5887433065e6b94729b52240800219cb4e6f0a757b27cd9fb8d2a89bcd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc0dd5887433065e6b94729b52240800219cb4e6f0a757b27cd9fb8d2a89bcd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0dd5887433065e6b94729b52240800219cb4e6f0a757b27cd9fb8d2a89bcd3", kill_on_drop: false }`
[INFO] [stdout] bc0dd5887433065e6b94729b52240800219cb4e6f0a757b27cd9fb8d2a89bcd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b1ffbccabf1f1dc55f443b38dfce3f37aa836d030ae9a6bbbc505a91d3ed677d
[INFO] running `Command { std: "docker" "start" "-a" "b1ffbccabf1f1dc55f443b38dfce3f37aa836d030ae9a6bbbc505a91d3ed677d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling sibyl v0.6.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]  Documenting sibyl v0.6.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: either 'blocking' or 'nonblocking' feature must be explicitly specified
[INFO] [stdout]    --> src/lib.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | compile_error!("either 'blocking' or 'nonblocking' feature must be explicitly specified");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `sibyl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name sibyl src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8801f81ad57b3173 -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-4d71df194c95b93b.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-d5c1de0f4ebdfb66.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-cbe0c85e4bb5cf2c.rmeta --cap-lints=warn --crate-version 0.6.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b1ffbccabf1f1dc55f443b38dfce3f37aa836d030ae9a6bbbc505a91d3ed677d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1ffbccabf1f1dc55f443b38dfce3f37aa836d030ae9a6bbbc505a91d3ed677d", kill_on_drop: false }`
[INFO] [stdout] b1ffbccabf1f1dc55f443b38dfce3f37aa836d030ae9a6bbbc505a91d3ed677d