[INFO] fetching crate aamp 0.1.6...
[INFO] documenting aamp-0.1.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate aamp 0.1.6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate aamp 0.1.6 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 aamp 0.1.6
[INFO] finished tweaking crates.io crate aamp 0.1.6
[INFO] tweaked toml for crates.io crate aamp 0.1.6 written to /workspace/builds/worker-12/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] e3368ee8ce63de067a032fe07a72f0309b290c4ca13d958572006151c0880125
[INFO] running `Command { std: "docker" "start" "-a" "e3368ee8ce63de067a032fe07a72f0309b290c4ca13d958572006151c0880125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3368ee8ce63de067a032fe07a72f0309b290c4ca13d958572006151c0880125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3368ee8ce63de067a032fe07a72f0309b290c4ca13d958572006151c0880125", kill_on_drop: false }`
[INFO] [stdout] e3368ee8ce63de067a032fe07a72f0309b290c4ca13d958572006151c0880125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 88148194fab84dd33358d4c9577ff8131133f3fef9cfb497568863755bd39880
[INFO] running `Command { std: "docker" "start" "-a" "88148194fab84dd33358d4c9577ff8131133f3fef9cfb497568863755bd39880", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking unescape v0.1.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]     Checking parse_int v0.5.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling binwrite_derive v0.2.1
[INFO] [stderr]    Compiling binread_derive v1.4.3
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking binwrite v0.2.1
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling cached_proc_macro v0.6.2
[INFO] [stderr]     Checking binread v1.4.1
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking cached v0.23.0
[INFO] [stderr]  Documenting aamp v0.1.6 (/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(seek_stream_len)]
[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 `aamp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name aamp src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1a1848c9836e6c6d -L dependency=/opt/rustwide/target/debug/deps --extern binread=/opt/rustwide/target/debug/deps/libbinread-ec64c0acde9f9129.rmeta --extern binwrite=/opt/rustwide/target/debug/deps/libbinwrite-e20a6a57c996d751.rmeta --extern cached=/opt/rustwide/target/debug/deps/libcached-c90da48e3a1f187d.rmeta --extern crc=/opt/rustwide/target/debug/deps/libcrc-b617da7aec1f67c7.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-2129c1460a18c11d.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-421d56075a1d26a2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern metrohash=/opt/rustwide/target/debug/deps/libmetrohash-c9d7e6b20a1c46d9.rmeta --extern num_format=/opt/rustwide/target/debug/deps/libnum_format-cf5a42e5664ee808.rmeta --extern parse_int=/opt/rustwide/target/debug/deps/libparse_int-3f7e50cc1feecaf2.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e476269e45cbb2c7.rmeta --extern ryu=/opt/rustwide/target/debug/deps/libryu-1d8ab9c43572b5fb.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-5433f33b3511774b.rmeta --extern unescape=/opt/rustwide/target/debug/deps/libunescape-0b42890e0b618667.rmeta --cap-lints=warn --crate-version 0.1.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "88148194fab84dd33358d4c9577ff8131133f3fef9cfb497568863755bd39880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88148194fab84dd33358d4c9577ff8131133f3fef9cfb497568863755bd39880", kill_on_drop: false }`
[INFO] [stdout] 88148194fab84dd33358d4c9577ff8131133f3fef9cfb497568863755bd39880