[INFO] cloning repository https://github.com/Adamska1008/compiler_expt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Adamska1008/compiler_expt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdamska1008%2Fcompiler_expt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdamska1008%2Fcompiler_expt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d5a47a34c1d2acaa21c2123e1cebae497b2ade2
[INFO] documenting Adamska1008/compiler_expt against 1.91.0 for beta-1.92-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdamska1008%2Fcompiler_expt" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Adamska1008/compiler_expt
[INFO] finished tweaking git repo https://github.com/Adamska1008/compiler_expt
[INFO] tweaked toml for git repo https://github.com/Adamska1008/compiler_expt written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Adamska1008/compiler_expt on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Adamska1008/compiler_expt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded queues v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b86d23505158d8653fa40ec420260513f5168b840e61539d8530c818d820e3d
[INFO] running `Command { std: "docker" "start" "-a" "6b86d23505158d8653fa40ec420260513f5168b840e61539d8530c818d820e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b86d23505158d8653fa40ec420260513f5168b840e61539d8530c818d820e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b86d23505158d8653fa40ec420260513f5168b840e61539d8530c818d820e3d", kill_on_drop: false }`
[INFO] [stdout] 6b86d23505158d8653fa40ec420260513f5168b840e61539d8530c818d820e3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd432e3c8d271f550d08beca1a4836a05ec0fd1449e4cb9cdb1f1de488a51550
[INFO] running `Command { std: "docker" "start" "-a" "cd432e3c8d271f550d08beca1a4836a05ec0fd1449e4cb9cdb1f1de488a51550", kill_on_drop: false }`
[INFO] [stderr]     Checking queues v1.1.0
[INFO] [stderr]  Documenting compiler_expt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_some_and)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `compiler_expt`
[INFO] running `Command { std: "docker" "inspect" "cd432e3c8d271f550d08beca1a4836a05ec0fd1449e4cb9cdb1f1de488a51550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd432e3c8d271f550d08beca1a4836a05ec0fd1449e4cb9cdb1f1de488a51550", kill_on_drop: false }`
[INFO] [stdout] cd432e3c8d271f550d08beca1a4836a05ec0fd1449e4cb9cdb1f1de488a51550
