[INFO] cloning repository https://github.com/5outh/burst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/5outh/burst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5outh%2Fburst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5outh%2Fburst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21b64b4d111f495657ab00764ddae2ff6dab8681
[INFO] documenting 5outh/burst against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F5outh%2Fburst" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/5outh/burst on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/5outh/burst
[INFO] finished tweaking git repo https://github.com/5outh/burst
[INFO] tweaked toml for git repo https://github.com/5outh/burst written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/5outh/burst already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.1.6
[INFO] [stderr]   Downloaded ncurses v5.72.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e1e8bb43bcf27cb6dfe8d53f41ae6c6e484898493c024d85f623975ee2c3e0f
[INFO] running `Command { std: "docker" "start" "-a" "2e1e8bb43bcf27cb6dfe8d53f41ae6c6e484898493c024d85f623975ee2c3e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1e8bb43bcf27cb6dfe8d53f41ae6c6e484898493c024d85f623975ee2c3e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1e8bb43bcf27cb6dfe8d53f41ae6c6e484898493c024d85f623975ee2c3e0f", kill_on_drop: false }`
[INFO] [stdout] 2e1e8bb43bcf27cb6dfe8d53f41ae6c6e484898493c024d85f623975ee2c3e0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47d9395a1d4f48240b43643046a9a16927e2f9b07d6580f9a7677cd253e28aff
[INFO] running `Command { std: "docker" "start" "-a" "47d9395a1d4f48240b43643046a9a16927e2f9b07d6580f9a7677cd253e28aff", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.1.6
[INFO] [stderr]     Checking ncurses v5.72.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ncurses-5.72.0/src/ncurses.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(core)]
[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 compile `ncurses` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "47d9395a1d4f48240b43643046a9a16927e2f9b07d6580f9a7677cd253e28aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47d9395a1d4f48240b43643046a9a16927e2f9b07d6580f9a7677cd253e28aff", kill_on_drop: false }`
[INFO] [stdout] 47d9395a1d4f48240b43643046a9a16927e2f9b07d6580f9a7677cd253e28aff