[INFO] fetching crate dochy_archiver2 0.10.1...
[INFO] documenting dochy_archiver2-0.10.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate dochy_archiver2 0.10.1 into /workspace/builds/worker-108/source
[INFO] validating manifest of crates.io crate dochy_archiver2 0.10.1 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] started tweaking crates.io crate dochy_archiver2 0.10.1
[INFO] finished tweaking crates.io crate dochy_archiver2 0.10.1
[INFO] tweaked toml for crates.io crate dochy_archiver2 0.10.1 written to /workspace/builds/worker-108/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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] d0b9b0ab5e78144c2478fa5d86bf39d4bd73794855894c9ff5989ecab0cd54b7
[INFO] running `Command { std: "docker" "start" "-a" "d0b9b0ab5e78144c2478fa5d86bf39d4bd73794855894c9ff5989ecab0cd54b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0b9b0ab5e78144c2478fa5d86bf39d4bd73794855894c9ff5989ecab0cd54b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0b9b0ab5e78144c2478fa5d86bf39d4bd73794855894c9ff5989ecab0cd54b7", kill_on_drop: false }`
[INFO] [stdout] d0b9b0ab5e78144c2478fa5d86bf39d4bd73794855894c9ff5989ecab0cd54b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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] 7af56859e638e193e655d80d17180f1368422046062e08a2f88f94c743706f28
[INFO] running `Command { std: "docker" "start" "-a" "7af56859e638e193e655d80d17180f1368422046062e08a2f88f94c743706f28", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]     Checking with_capacity_safe v0.4.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking dochy_compaction v0.10.1
[INFO] [stderr]  Documenting dochy_archiver2 v0.10.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(once_cell)]
[INFO] [stdout]   |            ^^^^^^^^^
[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 `dochy_archiver2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dochy_archiver2 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=aa376ee143668610 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-a2ad8fa07e0781ab.rmeta --extern dochy_compaction=/opt/rustwide/target/debug/deps/libdochy_compaction-3778ab6fe3d2ca08.rmeta --extern metrohash=/opt/rustwide/target/debug/deps/libmetrohash-e12f91b1a9b0b50b.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-6ff852cd68f4dcba.rmeta --extern snap=/opt/rustwide/target/debug/deps/libsnap-640537bedda3ecba.rmeta --extern with_capacity_safe=/opt/rustwide/target/debug/deps/libwith_capacity_safe-6a63600a0e551072.rmeta --cap-lints=warn --crate-version 0.10.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7af56859e638e193e655d80d17180f1368422046062e08a2f88f94c743706f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7af56859e638e193e655d80d17180f1368422046062e08a2f88f94c743706f28", kill_on_drop: false }`
[INFO] [stdout] 7af56859e638e193e655d80d17180f1368422046062e08a2f88f94c743706f28