[INFO] fetching crate tuifw-screen-base 0.11.0...
[INFO] documenting tuifw-screen-base-0.11.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate tuifw-screen-base 0.11.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate tuifw-screen-base 0.11.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuifw-screen-base 0.11.0
[INFO] finished tweaking crates.io crate tuifw-screen-base 0.11.0
[INFO] tweaked toml for crates.io crate tuifw-screen-base 0.11.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5df17ba67a84ec426a9d488d7083ad1c22a47697e0507ad8996161279a4897d
[INFO] running `Command { std: "docker" "start" "-a" "d5df17ba67a84ec426a9d488d7083ad1c22a47697e0507ad8996161279a4897d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5df17ba67a84ec426a9d488d7083ad1c22a47697e0507ad8996161279a4897d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5df17ba67a84ec426a9d488d7083ad1c22a47697e0507ad8996161279a4897d", kill_on_drop: false }`
[INFO] [stdout] d5df17ba67a84ec426a9d488d7083ad1c22a47697e0507ad8996161279a4897d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1dd43fbede4bac5880f4e0459af3e626c77b94bcc9e01f4403f4c50afab712d
[INFO] running `Command { std: "docker" "start" "-a" "d1dd43fbede4bac5880f4e0459af3e626c77b94bcc9e01f4403f4c50afab712d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking enum-derive-2018 v2.0.1
[INFO] [stderr]     Checking macro-attr-2018 v2.1.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling errno-sys v0.0.1
[INFO] [stderr]    Compiling iconv-sys v0.0.3
[INFO] [stderr]     Checking errno-no-std v0.0.4
[INFO] [stderr]  Documenting tuifw-screen-base v0.11.0 (/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(stmt_expr_attributes)]
[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 `tuifw-screen-base`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name tuifw_screen_base src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9ca6bc8e228287ec -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-885ae3214f28c119.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-e8d611ec52aab0b8.rmeta --extern enum_derive_2018=/opt/rustwide/target/debug/deps/libenum_derive_2018-0f08dc036bd261a7.rmeta --extern errno_no_std=/opt/rustwide/target/debug/deps/liberrno_no_std-ae2fd17beb6a207a.rmeta --extern macro_attr_2018=/opt/rustwide/target/debug/deps/libmacro_attr_2018-f018ce1aeb8eb31c.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-ef4d14495cc7009a.rmeta --cap-lints=warn --crate-version 0.11.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d1dd43fbede4bac5880f4e0459af3e626c77b94bcc9e01f4403f4c50afab712d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1dd43fbede4bac5880f4e0459af3e626c77b94bcc9e01f4403f4c50afab712d", kill_on_drop: false }`
[INFO] [stdout] d1dd43fbede4bac5880f4e0459af3e626c77b94bcc9e01f4403f4c50afab712d