[INFO] fetching crate bls-like 0.1.0...
[INFO] documenting bls-like-0.1.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate bls-like 0.1.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate bls-like 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bls-like 0.1.0
[INFO] finished tweaking crates.io crate bls-like 0.1.0
[INFO] tweaked toml for crates.io crate bls-like 0.1.0 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-2021-08-01" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ff_derive v0.3.0
[INFO] [stderr]   Downloaded ff v0.4.0
[INFO] [stderr]   Downloaded paired v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6a0406c3e90611945bd13495e9646f4ce2212905c2e8d63cc6dd37a82301dac
[INFO] running `Command { std: "docker" "start" "-a" "e6a0406c3e90611945bd13495e9646f4ce2212905c2e8d63cc6dd37a82301dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6a0406c3e90611945bd13495e9646f4ce2212905c2e8d63cc6dd37a82301dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a0406c3e90611945bd13495e9646f4ce2212905c2e8d63cc6dd37a82301dac", kill_on_drop: false }`
[INFO] [stdout] e6a0406c3e90611945bd13495e9646f4ce2212905c2e8d63cc6dd37a82301dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef7ec2639a8a5911490d6f98ad318fed9447e99cc32e3f4b93b5711dd0eedf6b
[INFO] running `Command { std: "docker" "start" "-a" "ef7ec2639a8a5911490d6f98ad318fed9447e99cc32e3f4b93b5711dd0eedf6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling ff_derive v0.3.0
[INFO] [stderr]     Checking ff v0.4.0
[INFO] [stderr]     Checking paired v0.15.1
[INFO] [stderr]  Documenting bls-like v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | #![feature(associated_type_defaults)]
[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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bls-like`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name bls_like src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayref=/opt/rustwide/target/debug/deps/libarrayref-8ed3c15eb9570ba2.rmeta --extern ff=/opt/rustwide/target/debug/deps/libff-19a5285f7ce27b4f.rmeta --extern paired=/opt/rustwide/target/debug/deps/libpaired-3d0ff2b9bfd56a74.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3de628178315b7e2.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-9a3f372efd8dc864.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ef7ec2639a8a5911490d6f98ad318fed9447e99cc32e3f4b93b5711dd0eedf6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef7ec2639a8a5911490d6f98ad318fed9447e99cc32e3f4b93b5711dd0eedf6b", kill_on_drop: false }`
[INFO] [stdout] ef7ec2639a8a5911490d6f98ad318fed9447e99cc32e3f4b93b5711dd0eedf6b
