[INFO] fetching crate dst 0.1.0...
[INFO] documenting dst-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate dst 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate dst 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dst 0.1.0
[INFO] finished tweaking crates.io crate dst 0.1.0
[INFO] tweaked toml for crates.io crate dst 0.1.0 written to /workspace/builds/worker-5-tc1/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" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fn-fixture-lib v1.0.2
[INFO] [stderr]   Downloaded fn-fixture v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3aff35dcd93c2413878d8bf64ff1e4877869c28e19c04b55d47260fc488dcc0c
[INFO] running `Command { std: "docker" "start" "-a" "3aff35dcd93c2413878d8bf64ff1e4877869c28e19c04b55d47260fc488dcc0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3aff35dcd93c2413878d8bf64ff1e4877869c28e19c04b55d47260fc488dcc0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aff35dcd93c2413878d8bf64ff1e4877869c28e19c04b55d47260fc488dcc0c", kill_on_drop: false }`
[INFO] [stdout] 3aff35dcd93c2413878d8bf64ff1e4877869c28e19c04b55d47260fc488dcc0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e245f95dedf1d781bdc250d2c16a83fa9ef4af2c825e7241741b67b665402414
[INFO] running `Command { std: "docker" "start" "-a" "e245f95dedf1d781bdc250d2c16a83fa9ef4af2c825e7241741b67b665402414", kill_on_drop: false }`
[INFO] [stderr]  Documenting dst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:50
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(not(feature = "undefined_behavior"), feature(layout_for_ptr))]
[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:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 |   #![cfg_attr(feature = "unstable", feature(
[INFO] [stdout]   |  ___________________________________^
[INFO] [stdout] 4 | |     const_raw_ptr_deref,
[INFO] [stdout] 5 | |     const_mut_refs,
[INFO] [stdout] 6 | |     const_align_of_val_raw,
[INFO] [stdout] 7 | |     const_size_of_val_raw,
[INFO] [stdout] 8 | |     const_slice_from_raw_parts,
[INFO] [stdout] 9 | | ))]
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_raw_ptr_deref` has been stable since `1.58.0` and no longer requires an attribute to enable
[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 `dst`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dst src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="unstable"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9cb1261b2ad3773f -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e245f95dedf1d781bdc250d2c16a83fa9ef4af2c825e7241741b67b665402414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e245f95dedf1d781bdc250d2c16a83fa9ef4af2c825e7241741b67b665402414", kill_on_drop: false }`
[INFO] [stdout] e245f95dedf1d781bdc250d2c16a83fa9ef4af2c825e7241741b67b665402414
