[INFO] cloning repository https://github.com/zedseven/config-loader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zedseven/config-loader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzedseven%2Fconfig-loader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzedseven%2Fconfig-loader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34d29399a533ea8b5bd53003bf934c24cd786a06
[INFO] documenting zedseven/config-loader 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%2Fzedseven%2Fconfig-loader" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zedseven/config-loader 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/zedseven/config-loader
[INFO] finished tweaking git repo https://github.com/zedseven/config-loader
[INFO] tweaked toml for git repo https://github.com/zedseven/config-loader written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/zedseven/config-loader 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]  Downloading crates ...
[INFO] [stderr]   Downloaded home v0.5.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.34
[INFO] [stderr]   Downloaded anyhow v1.0.51
[INFO] [stderr]   Downloaded quote v1.0.10
[INFO] [stderr]   Downloaded clap v3.0.0-rc.5
[INFO] [stderr]   Downloaded serde v1.0.131
[INFO] [stderr]   Downloaded syn v1.0.82
[INFO] [stderr]   Downloaded serde_derive v1.0.131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 9e7c52c56e6d1288f58e1bfa6dadec1054734a0e87cae83fad054490041321c7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9e7c52c56e6d1288f58e1bfa6dadec1054734a0e87cae83fad054490041321c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e7c52c56e6d1288f58e1bfa6dadec1054734a0e87cae83fad054490041321c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e7c52c56e6d1288f58e1bfa6dadec1054734a0e87cae83fad054490041321c7", kill_on_drop: false }`
[INFO] [stdout] 9e7c52c56e6d1288f58e1bfa6dadec1054734a0e87cae83fad054490041321c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 38e4026524fd1711520e697ac50079fc073e83f4831c20efab8ab1cf1a0fefe2
[INFO] running `Command { std: "docker" "start" "-a" "38e4026524fd1711520e697ac50079fc073e83f4831c20efab8ab1cf1a0fefe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking clap v3.0.0-rc.5
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting config-loader v2.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(int_log)]
[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 `config-loader`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name config_loader src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bfab197400263b8b -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-2b51f40009cfbc32.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-f2b2621df1e6694f.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-a10293341ae37dcd.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a535053ecdb99459.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-56571b4c3d3a7171.rmeta --extern yansi=/opt/rustwide/target/debug/deps/libyansi-a37a70c07e6f9f7a.rmeta --cap-lints=warn --crate-version 2.2.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "38e4026524fd1711520e697ac50079fc073e83f4831c20efab8ab1cf1a0fefe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e4026524fd1711520e697ac50079fc073e83f4831c20efab8ab1cf1a0fefe2", kill_on_drop: false }`
[INFO] [stdout] 38e4026524fd1711520e697ac50079fc073e83f4831c20efab8ab1cf1a0fefe2