[INFO] cloning repository https://github.com/LyricLy/flakc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LyricLy/flakc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyricLy%2Fflakc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyricLy%2Fflakc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7848d3188af3961c08d9d3c9d8b58cd68a13b3eb
[INFO] documenting LyricLy/flakc against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyricLy%2Fflakc" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LyricLy/flakc on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LyricLy/flakc
[INFO] finished tweaking git repo https://github.com/LyricLy/flakc
[INFO] tweaked toml for git repo https://github.com/LyricLy/flakc written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LyricLy/flakc 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh_shared v0.1.7
[INFO] [stderr]   Downloaded argh v0.1.7
[INFO] [stderr]   Downloaded argh_derive v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71fa4300d83cb4fbf347cc25becbd7b708ae018712f7069af86485c4f13ca2de
[INFO] running `Command { std: "docker" "start" "-a" "71fa4300d83cb4fbf347cc25becbd7b708ae018712f7069af86485c4f13ca2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71fa4300d83cb4fbf347cc25becbd7b708ae018712f7069af86485c4f13ca2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71fa4300d83cb4fbf347cc25becbd7b708ae018712f7069af86485c4f13ca2de", kill_on_drop: false }`
[INFO] [stdout] 71fa4300d83cb4fbf347cc25becbd7b708ae018712f7069af86485c4f13ca2de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf502a2ef99b665fd0ed0071a10ce9eb0391cfb79a066d38648ecd83eec62f5a
[INFO] running `Command { std: "docker" "start" "-a" "cf502a2ef99b665fd0ed0071a10ce9eb0391cfb79a066d38648ecd83eec62f5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling argh_shared v0.1.7
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling argh_derive v0.1.7
[INFO] [stderr]     Checking argh v0.1.7
[INFO] [stderr]  Documenting flakc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_else)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_else` has been stable since `1.65.0` and no longer requires an attribute to enable
[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 `flakc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name flakc src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=8ae43852eb6e24ed -L dependency=/opt/rustwide/target/debug/deps --extern argh=/opt/rustwide/target/debug/deps/libargh-fce6761ab6278d5c.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-dfa5c08ae3f97a91.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-f28dca4148d629fb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "cf502a2ef99b665fd0ed0071a10ce9eb0391cfb79a066d38648ecd83eec62f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf502a2ef99b665fd0ed0071a10ce9eb0391cfb79a066d38648ecd83eec62f5a", kill_on_drop: false }`
[INFO] [stdout] cf502a2ef99b665fd0ed0071a10ce9eb0391cfb79a066d38648ecd83eec62f5a
