[INFO] fetching crate bls12_381_ietf 0.1.3...
[INFO] documenting bls12_381_ietf-0.1.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate bls12_381_ietf 0.1.3 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate bls12_381_ietf 0.1.3 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 bls12_381_ietf 0.1.3
[INFO] finished tweaking crates.io crate bls12_381_ietf 0.1.3
[INFO] tweaked toml for crates.io crate bls12_381_ietf 0.1.3 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate crates.io crate bls12_381_ietf 0.1.3 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-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] cc4361f2a3dfb86f2728d5680378e322fbe7a99d81ecd8a0812c93fcd6791e7a
[INFO] running `Command { std: "docker" "start" "-a" "cc4361f2a3dfb86f2728d5680378e322fbe7a99d81ecd8a0812c93fcd6791e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc4361f2a3dfb86f2728d5680378e322fbe7a99d81ecd8a0812c93fcd6791e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4361f2a3dfb86f2728d5680378e322fbe7a99d81ecd8a0812c93fcd6791e7a", kill_on_drop: false }`
[INFO] [stdout] cc4361f2a3dfb86f2728d5680378e322fbe7a99d81ecd8a0812c93fcd6791e7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] b808009b2250f2fa823b517cf95326acc3393590c715d796184cef2f9f89e37c
[INFO] running `Command { std: "docker" "start" "-a" "b808009b2250f2fa823b517cf95326acc3393590c715d796184cef2f9f89e37c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]    Compiling ff_derive_ce v0.7.0
[INFO] [stderr]     Checking ff_ce v0.9.0
[INFO] [stderr]     Checking pairing_ce v0.20.0
[INFO] [stderr]  Documenting bls12_381_ietf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bls12_381_ietf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name bls12_381_ietf src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=700ac94080625ac8 -L dependency=/opt/rustwide/target/debug/deps --extern hex=/opt/rustwide/target/debug/deps/libhex-6c16b667c08d5203.rmeta --extern hkdf=/opt/rustwide/target/debug/deps/libhkdf-3a53231b54c8a49b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-867be29e4bdab848.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-0433d30823ba1c29.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-af65fb444374cd32.rmeta --extern pairing=/opt/rustwide/target/debug/deps/libpairing_ce-65e9d1697f8abd86.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-0dda1b55082f3bea.rmeta --cap-lints=warn --crate-version 0.1.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b808009b2250f2fa823b517cf95326acc3393590c715d796184cef2f9f89e37c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b808009b2250f2fa823b517cf95326acc3393590c715d796184cef2f9f89e37c", kill_on_drop: false }`
[INFO] [stdout] b808009b2250f2fa823b517cf95326acc3393590c715d796184cef2f9f89e37c