[INFO] fetching crate tty 0.5.0...
[INFO] documenting tty-0.5.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate tty 0.5.0 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate tty 0.5.0 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 tty 0.5.0
[INFO] finished tweaking crates.io crate tty 0.5.0
[INFO] tweaked toml for crates.io crate tty 0.5.0 written to /workspace/builds/worker-31/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 0eb83f5eabe889ed3f4e3ae4b3b4d93e8f2e54b4b0888fe6f312ec2f5b5482bc
[INFO] running `Command { std: "docker" "start" "-a" "0eb83f5eabe889ed3f4e3ae4b3b4d93e8f2e54b4b0888fe6f312ec2f5b5482bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eb83f5eabe889ed3f4e3ae4b3b4d93e8f2e54b4b0888fe6f312ec2f5b5482bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb83f5eabe889ed3f4e3ae4b3b4d93e8f2e54b4b0888fe6f312ec2f5b5482bc", kill_on_drop: false }`
[INFO] [stdout] 0eb83f5eabe889ed3f4e3ae4b3b4d93e8f2e54b4b0888fe6f312ec2f5b5482bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] ee01ac5daffc7d4938a76979c83c21db286d7b1089a2a1cf327bb7e5ff3d338d
[INFO] running `Command { std: "docker" "start" "-a" "ee01ac5daffc7d4938a76979c83c21db286d7b1089a2a1cf327bb7e5ff3d338d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking bit-set v0.2.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking fd v0.2.3
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking chan-signal v0.1.7
[INFO] [stderr]  Documenting tty v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(process_exec)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `tty`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name tty src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ade1b0c0d638bd96 -L dependency=/opt/rustwide/target/debug/deps --extern chan=/opt/rustwide/target/debug/deps/libchan-58d3aa4c34d96a1f.rmeta --extern chan_signal=/opt/rustwide/target/debug/deps/libchan_signal-bf2298585bc7de69.rmeta --extern fd=/opt/rustwide/target/debug/deps/libfd-72bd5c53545fa2a6.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-4d71df194c95b93b.rmeta --extern termios=/opt/rustwide/target/debug/deps/libtermios-ad1846bc1d2407a8.rmeta --cap-lints=warn --crate-version 0.5.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ee01ac5daffc7d4938a76979c83c21db286d7b1089a2a1cf327bb7e5ff3d338d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee01ac5daffc7d4938a76979c83c21db286d7b1089a2a1cf327bb7e5ff3d338d", kill_on_drop: false }`
[INFO] [stdout] ee01ac5daffc7d4938a76979c83c21db286d7b1089a2a1cf327bb7e5ff3d338d