[INFO] fetching crate smart_tensor 0.0.1...
[INFO] documenting smart_tensor-0.0.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate smart_tensor 0.0.1 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate smart_tensor 0.0.1 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 smart_tensor 0.0.1
[INFO] finished tweaking crates.io crate smart_tensor 0.0.1
[INFO] tweaked toml for crates.io crate smart_tensor 0.0.1 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate smart_tensor 0.0.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 4eab5682d5feb5b4aa1d9d38896f3a8061ace4f2a18adae59ab2acc6a46f5b61
[INFO] running `Command { std: "docker" "start" "-a" "4eab5682d5feb5b4aa1d9d38896f3a8061ace4f2a18adae59ab2acc6a46f5b61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4eab5682d5feb5b4aa1d9d38896f3a8061ace4f2a18adae59ab2acc6a46f5b61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eab5682d5feb5b4aa1d9d38896f3a8061ace4f2a18adae59ab2acc6a46f5b61", kill_on_drop: false }`
[INFO] [stdout] 4eab5682d5feb5b4aa1d9d38896f3a8061ace4f2a18adae59ab2acc6a46f5b61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 064a30f18553ec48893739f24c2b20a1875afb61087afeb7d37bfde8b66f3824
[INFO] running `Command { std: "docker" "start" "-a" "064a30f18553ec48893739f24c2b20a1875afb61087afeb7d37bfde8b66f3824", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]  Documenting smart_tensor v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[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] [stderr] error: could not document `smart_tensor`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name smart_tensor src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=06757e7af8a57a3c -L dependency=/opt/rustwide/target/debug/deps --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-05244041fa372694.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "064a30f18553ec48893739f24c2b20a1875afb61087afeb7d37bfde8b66f3824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "064a30f18553ec48893739f24c2b20a1875afb61087afeb7d37bfde8b66f3824", kill_on_drop: false }`
[INFO] [stdout] 064a30f18553ec48893739f24c2b20a1875afb61087afeb7d37bfde8b66f3824