[INFO] fetching crate zub 0.3.14...
[INFO] documenting zub-0.3.14 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate zub 0.3.14 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate zub 0.3.14 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zub 0.3.14
[INFO] finished tweaking crates.io crate zub 0.3.14
[INFO] tweaked toml for crates.io crate zub 0.3.14 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate zub 0.3.14 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded beef v0.4.4
[INFO] [stderr]   Downloaded hashbrown v0.7.2
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded logos-derive v0.11.5
[INFO] [stderr]   Downloaded flamer v0.3.0
[INFO] [stderr]   Downloaded ahash v0.3.3
[INFO] [stderr]   Downloaded sized-chunks v0.5.3
[INFO] [stderr]   Downloaded logos v0.11.4
[INFO] [stderr]   Downloaded im-rc v14.3.0
[INFO] [stderr]   Downloaded flame v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0ea043bc37be7fbd9a3f1a927a9fae4553dd52a8cc2e1ed77996f2501c70b8a
[INFO] running `Command { std: "docker" "start" "-a" "e0ea043bc37be7fbd9a3f1a927a9fae4553dd52a8cc2e1ed77996f2501c70b8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0ea043bc37be7fbd9a3f1a927a9fae4553dd52a8cc2e1ed77996f2501c70b8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0ea043bc37be7fbd9a3f1a927a9fae4553dd52a8cc2e1ed77996f2501c70b8a", kill_on_drop: false }`
[INFO] [stdout] e0ea043bc37be7fbd9a3f1a927a9fae4553dd52a8cc2e1ed77996f2501c70b8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb665ef2a47968e56c4fd02156c9051884cddbe70e40cdca441c773e403d1c21
[INFO] running `Command { std: "docker" "start" "-a" "eb665ef2a47968e56c4fd02156c9051884cddbe70e40cdca441c773e403d1c21", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking ahash v0.3.3
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling flame v0.2.2
[INFO] [stderr]    Compiling flamer v0.3.0
[INFO] [stderr]  Documenting zub v0.3.14 (/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(vec_drain_as_slice)]
[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 `zub`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name zub src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=db713a266fb11487 -L dependency=/opt/rustwide/target/debug/deps --extern colored=/opt/rustwide/target/debug/deps/libcolored-c4ea5d67f877b117.rmeta --extern flame=/opt/rustwide/target/debug/deps/libflame-35a5c740ea15a1bf.rmeta --extern flamer=/opt/rustwide/target/debug/deps/libflamer-c41dad403fdfd73c.so --extern fnv=/opt/rustwide/target/debug/deps/libfnv-6d0e8d39221c82fb.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-bf5cad914d7cd64b.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-1624cf31b7e44939.rmeta --cap-lints=warn --crate-version 0.3.14` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "eb665ef2a47968e56c4fd02156c9051884cddbe70e40cdca441c773e403d1c21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb665ef2a47968e56c4fd02156c9051884cddbe70e40cdca441c773e403d1c21", kill_on_drop: false }`
[INFO] [stdout] eb665ef2a47968e56c4fd02156c9051884cddbe70e40cdca441c773e403d1c21
