[INFO] fetching crate nspire 0.5.2...
[INFO] documenting nspire-0.5.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate nspire 0.5.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate nspire 0.5.2 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 crates.io crate nspire 0.5.2
[INFO] finished tweaking crates.io crate nspire 0.5.2
[INFO] tweaked toml for crates.io crate nspire 0.5.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cstr_core v0.1.2
[INFO] [stderr]   Downloaded cty v0.1.5
[INFO] [stderr]   Downloaded ndless-sys v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] de7d2e729fe71e8a07003258c6c778b3af463b8bff66920be4ab93ff58e75dd8
[INFO] running `Command { std: "docker" "start" "-a" "de7d2e729fe71e8a07003258c6c778b3af463b8bff66920be4ab93ff58e75dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de7d2e729fe71e8a07003258c6c778b3af463b8bff66920be4ab93ff58e75dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de7d2e729fe71e8a07003258c6c778b3af463b8bff66920be4ab93ff58e75dd8", kill_on_drop: false }`
[INFO] [stdout] de7d2e729fe71e8a07003258c6c778b3af463b8bff66920be4ab93ff58e75dd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4f86eab708d75c11fb702888780b5a824660ecf5691ab46bc6c1662a01e9868c
[INFO] running `Command { std: "docker" "start" "-a" "4f86eab708d75c11fb702888780b5a824660ecf5691ab46bc6c1662a01e9868c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking cty v0.1.5
[INFO] [stderr]     Checking ndless-sys v0.1.3
[INFO] [stderr]     Checking cstr_core v0.1.2
[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/cstr_core-0.1.2/src/lib.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "alloc", feature(alloc))]
[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 `cstr_core` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4f86eab708d75c11fb702888780b5a824660ecf5691ab46bc6c1662a01e9868c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f86eab708d75c11fb702888780b5a824660ecf5691ab46bc6c1662a01e9868c", kill_on_drop: false }`
[INFO] [stdout] 4f86eab708d75c11fb702888780b5a824660ecf5691ab46bc6c1662a01e9868c