[INFO] fetching crate iobuf 5.8.1...
[INFO] documenting iobuf-5.8.1 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate iobuf 5.8.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate iobuf 5.8.1 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 iobuf 5.8.1
[INFO] finished tweaking crates.io crate iobuf 5.8.1
[INFO] tweaked toml for crates.io crate iobuf 5.8.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] warning: profile `doc` is deprecated and has no effect
[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] c4fe7c67c834e1cf12b56ac1434b3d61066f8f5a8c5e4dc2da2f59a2a114e6c3
[INFO] running `Command { std: "docker" "start" "-a" "c4fe7c67c834e1cf12b56ac1434b3d61066f8f5a8c5e4dc2da2f59a2a114e6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4fe7c67c834e1cf12b56ac1434b3d61066f8f5a8c5e4dc2da2f59a2a114e6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4fe7c67c834e1cf12b56ac1434b3d61066f8f5a8c5e4dc2da2f59a2a114e6c3", kill_on_drop: false }`
[INFO] [stdout] c4fe7c67c834e1cf12b56ac1434b3d61066f8f5a8c5e4dc2da2f59a2a114e6c3
[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] a967726a73f51750e0d62a78185ec70bebe21f465b3190319a0134c4d3c66291
[INFO] running `Command { std: "docker" "start" "-a" "a967726a73f51750e0d62a78185ec70bebe21f465b3190319a0134c4d3c66291", kill_on_drop: false }`
[INFO] [stderr] warning: profile `doc` is deprecated and has no effect
[INFO] [stderr]  Documenting iobuf v5.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/impls.rs:1666:9
[INFO] [stdout]      |
[INFO] [stdout] 1666 |         box v.into_iter()
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1666 |         Box::new(v.into_iter())
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/raw.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::heap::{Heap, Alloc, Layout};
[INFO] [stdout]   |            ^^^^ could not find `heap` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::nonzero`
[INFO] [stdout]  --> src/raw.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::nonzero::NonZero;
[INFO] [stdout]   |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::nonzero`
[INFO] [stdout]  --> src/iobuf.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::nonzero::NonZero;
[INFO] [stdout]   |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `core::nonzero`
[INFO] [stdout]  --> src/impls.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::nonzero::NonZero;
[INFO] [stdout]   |           ^^^^^^^ could not find `nonzero` in `core`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::intrinsics::move_val_init`
[INFO] [stdout]  --> src/bufspan.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::intrinsics::{assume, move_val_init};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^ no `move_val_init` in `intrinsics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | #![feature(plugin)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | #![feature(nonzero)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | #![feature(allocator_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | #![feature(alloc)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | #![feature(unique)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `iobuf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name iobuf src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b73fb96de0ce1d69 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 5.8.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a967726a73f51750e0d62a78185ec70bebe21f465b3190319a0134c4d3c66291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a967726a73f51750e0d62a78185ec70bebe21f465b3190319a0134c4d3c66291", kill_on_drop: false }`
[INFO] [stdout] a967726a73f51750e0d62a78185ec70bebe21f465b3190319a0134c4d3c66291
