[INFO] fetching crate config-loader 2.2.3...
[INFO] documenting config-loader-2.2.3 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate config-loader 2.2.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate config-loader 2.2.3 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate config-loader 2.2.3
[INFO] finished tweaking crates.io crate config-loader 2.2.3
[INFO] tweaked toml for crates.io crate config-loader 2.2.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate config-loader 2.2.3 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.82
[INFO] [stderr]   Downloaded clap v3.0.0-rc.5
[INFO] [stderr]   Downloaded serde v1.0.131
[INFO] [stderr]   Downloaded serde_derive v1.0.131
[INFO] [stderr]   Downloaded proc-macro2 v1.0.34
[INFO] [stderr]   Downloaded yansi v0.5.0
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fabc35b91793b7e3d27bde10e47595d72133ba9c711e53960bcd8777f0b3c46f
[INFO] running `Command { std: "docker" "start" "-a" "fabc35b91793b7e3d27bde10e47595d72133ba9c711e53960bcd8777f0b3c46f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fabc35b91793b7e3d27bde10e47595d72133ba9c711e53960bcd8777f0b3c46f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabc35b91793b7e3d27bde10e47595d72133ba9c711e53960bcd8777f0b3c46f", kill_on_drop: false }`
[INFO] [stdout] fabc35b91793b7e3d27bde10e47595d72133ba9c711e53960bcd8777f0b3c46f
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0321d0b90c8780d1d82ba75145a68f4f2be8bda0f9a12899efe2360ceaa12f70
[INFO] running `Command { std: "docker" "start" "-a" "0321d0b90c8780d1d82ba75145a68f4f2be8bda0f9a12899efe2360ceaa12f70", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.0-rc.5
[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 '-Arustdoc::private-intra-doc-links' -C metadata=62b4d586484d70df -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-012b6c1b375c084f.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-af5052bf735720df.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-4679b868423a318a.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-28c45d74ec9821ef.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-d05cfe4cc4c712f0.rmeta --extern yansi=/opt/rustwide/target/debug/deps/libyansi-e6d670a7c908acfb.rmeta --cap-lints=warn --crate-version 2.2.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0321d0b90c8780d1d82ba75145a68f4f2be8bda0f9a12899efe2360ceaa12f70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0321d0b90c8780d1d82ba75145a68f4f2be8bda0f9a12899efe2360ceaa12f70", kill_on_drop: false }`
[INFO] [stdout] 0321d0b90c8780d1d82ba75145a68f4f2be8bda0f9a12899efe2360ceaa12f70
