[INFO] fetching crate ni-fpga 1.4.1...
[INFO] documenting ni-fpga-1.4.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate ni-fpga 1.4.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ni-fpga 1.4.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ni-fpga 1.4.1
[INFO] finished tweaking crates.io crate ni-fpga 1.4.1
[INFO] tweaked toml for crates.io crate ni-fpga 1.4.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded radium v0.3.0
[INFO] [stderr]   Downloaded bitvec v0.17.4
[INFO] [stderr]   Downloaded ni-fpga-sys v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7c7da408d057f51563ba73a57dab6b42dfc9b25156c9e51df2a6988b03c0f52
[INFO] running `Command { std: "docker" "start" "-a" "a7c7da408d057f51563ba73a57dab6b42dfc9b25156c9e51df2a6988b03c0f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7c7da408d057f51563ba73a57dab6b42dfc9b25156c9e51df2a6988b03c0f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c7da408d057f51563ba73a57dab6b42dfc9b25156c9e51df2a6988b03c0f52", kill_on_drop: false }`
[INFO] [stdout] a7c7da408d057f51563ba73a57dab6b42dfc9b25156c9e51df2a6988b03c0f52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3167ff1251aa9f6f9f1f846ac5e4f3cb1fad1f2c42e2ceec4f06f432ef2d351e
[INFO] running `Command { std: "docker" "start" "-a" "3167ff1251aa9f6f9f1f846ac5e4f3cb1fad1f2c42e2ceec4f06f432ef2d351e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ni-fpga-sys v1.0.1
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]  Documenting ni-fpga v1.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_evaluatable_checked)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_generics)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(maybe_uninit_uninit_array)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `ni-fpga`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ni_fpga src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bitvec=/opt/rustwide/target/debug/deps/libbitvec-0171f5a800cecc60.rmeta --extern ni_fpga_sys=/opt/rustwide/target/debug/deps/libni_fpga_sys-b05f4df2d85569d4.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b32a054c81ce489a.rmeta --cap-lints=warn --crate-version 1.4.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3167ff1251aa9f6f9f1f846ac5e4f3cb1fad1f2c42e2ceec4f06f432ef2d351e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3167ff1251aa9f6f9f1f846ac5e4f3cb1fad1f2c42e2ceec4f06f432ef2d351e", kill_on_drop: false }`
[INFO] [stdout] 3167ff1251aa9f6f9f1f846ac5e4f3cb1fad1f2c42e2ceec4f06f432ef2d351e
