[INFO] fetching crate bern-arch 0.3.0...
[INFO] documenting bern-arch-0.3.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate bern-arch 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate bern-arch 0.3.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bern-arch 0.3.0
[INFO] finished tweaking crates.io crate bern-arch 0.3.0
[INFO] tweaked toml for crates.io crate bern-arch 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded downcast v0.11.0
[INFO] [stderr]   Downloaded difflib v0.4.0
[INFO] [stderr]   Downloaded predicates-core v1.0.6
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded mockall_derive v0.11.4
[INFO] [stderr]   Downloaded termtree v0.4.1
[INFO] [stderr]   Downloaded predicates-tree v1.0.9
[INFO] [stderr]   Downloaded bern-units v0.1.0
[INFO] [stderr]   Downloaded predicates v2.1.5
[INFO] [stderr]   Downloaded fragile v2.0.0
[INFO] [stderr]   Downloaded mockall v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f174dfcd1d87d03dce09164a9cfdffa79dcb2ea48eb79e2ab7feb014edb77ce
[INFO] running `Command { std: "docker" "start" "-a" "4f174dfcd1d87d03dce09164a9cfdffa79dcb2ea48eb79e2ab7feb014edb77ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f174dfcd1d87d03dce09164a9cfdffa79dcb2ea48eb79e2ab7feb014edb77ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f174dfcd1d87d03dce09164a9cfdffa79dcb2ea48eb79e2ab7feb014edb77ce", kill_on_drop: false }`
[INFO] [stdout] 4f174dfcd1d87d03dce09164a9cfdffa79dcb2ea48eb79e2ab7feb014edb77ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdc267fa171272bf548c87e40c28e6b94ce59e1f2288c46a5aa22a5f0e6f3a18
[INFO] running `Command { std: "docker" "start" "-a" "cdc267fa171272bf548c87e40c28e6b94ce59e1f2288c46a5aa22a5f0e6f3a18", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking termtree v0.4.1
[INFO] [stderr]     Checking fragile v2.0.0
[INFO] [stderr]    Compiling bern-arch v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking predicates-tree v1.0.9
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking bern-units v0.1.0
[INFO] [stderr]     Checking mockall v0.11.4
[INFO] [stderr]  Documenting bern-arch v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(naked_functions)]
[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:16:38
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![cfg_attr(not(target_os = "none"), feature(never_type))]
[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 `bern-arch`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name bern_arch src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2d5058080189921f -L dependency=/opt/rustwide/target/debug/deps --extern bern_units=/opt/rustwide/target/debug/deps/libbern_units-b32745f24a3b6690.rmeta --extern mockall=/opt/rustwide/target/debug/deps/libmockall-3933e2ab7d11cbf2.rmeta --cap-lints=warn --crate-version 0.3.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "cdc267fa171272bf548c87e40c28e6b94ce59e1f2288c46a5aa22a5f0e6f3a18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdc267fa171272bf548c87e40c28e6b94ce59e1f2288c46a5aa22a5f0e6f3a18", kill_on_drop: false }`
[INFO] [stdout] cdc267fa171272bf548c87e40c28e6b94ce59e1f2288c46a5aa22a5f0e6f3a18
