[INFO] fetching crate sensitive 0.9.1...
[INFO] documenting sensitive-0.9.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate sensitive 0.9.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate sensitive 0.9.1 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 sensitive 0.9.1
[INFO] finished tweaking crates.io crate sensitive 0.9.1
[INFO] tweaked toml for crates.io crate sensitive 0.9.1 written to /workspace/builds/worker-15/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 bulletproof v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 77b8ccf326ed37bab83724f09d2d0d2cd37311b20811b1bcd8f4304346753b2f
[INFO] running `Command { std: "docker" "start" "-a" "77b8ccf326ed37bab83724f09d2d0d2cd37311b20811b1bcd8f4304346753b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b8ccf326ed37bab83724f09d2d0d2cd37311b20811b1bcd8f4304346753b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b8ccf326ed37bab83724f09d2d0d2cd37311b20811b1bcd8f4304346753b2f", kill_on_drop: false }`
[INFO] [stdout] 77b8ccf326ed37bab83724f09d2d0d2cd37311b20811b1bcd8f4304346753b2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 8460a5520c775bb7b5867d152f981c5cfe9f75cba6328138cdcb8872beb4a96e
[INFO] running `Command { std: "docker" "start" "-a" "8460a5520c775bb7b5867d152f981c5cfe9f75cba6328138cdcb8872beb4a96e", kill_on_drop: false }`
[INFO] [stderr]  Documenting sensitive v0.9.1 (/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(
[INFO] [stdout] 2  | |     allocator_api,
[INFO] [stdout] 3  | |     available_concurrency,
[INFO] [stdout] 4  | |     cell_update,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     vec_spare_capacity,
[INFO] [stdout] 13 | | )]
[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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `sensitive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name sensitive src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="string"' --cfg 'feature="unicode-normalization"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-34f3b748d9af774b.rmeta --extern unicode_normalization=/opt/rustwide/target/debug/deps/libunicode_normalization-02d246ef83b4ae2b.rmeta --cap-lints=warn --crate-version 0.9.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8460a5520c775bb7b5867d152f981c5cfe9f75cba6328138cdcb8872beb4a96e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8460a5520c775bb7b5867d152f981c5cfe9f75cba6328138cdcb8872beb4a96e", kill_on_drop: false }`
[INFO] [stdout] 8460a5520c775bb7b5867d152f981c5cfe9f75cba6328138cdcb8872beb4a96e
