[INFO] cloning repository https://github.com/shulhi/gitsha
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shulhi/gitsha" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshulhi%2Fgitsha", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshulhi%2Fgitsha'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] becbef5baec32c92fee0b3b243025a514c7108f0
[INFO] documenting shulhi/gitsha against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshulhi%2Fgitsha" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shulhi/gitsha on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shulhi/gitsha
[INFO] finished tweaking git repo https://github.com/shulhi/gitsha
[INFO] tweaked toml for git repo https://github.com/shulhi/gitsha written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/shulhi/gitsha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b57f1e51008949d9bf8a7eb504dd4fc9337e0b4829fa558930c31be2b4516f27
[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" "b57f1e51008949d9bf8a7eb504dd4fc9337e0b4829fa558930c31be2b4516f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b57f1e51008949d9bf8a7eb504dd4fc9337e0b4829fa558930c31be2b4516f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57f1e51008949d9bf8a7eb504dd4fc9337e0b4829fa558930c31be2b4516f27", kill_on_drop: false }`
[INFO] [stdout] b57f1e51008949d9bf8a7eb504dd4fc9337e0b4829fa558930c31be2b4516f27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85f002173c6454a854ebb5690e0ca6688556a2b54197f9d69015eda90d190262
[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" "85f002173c6454a854ebb5690e0ca6688556a2b54197f9d69015eda90d190262", kill_on_drop: false }`
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking tokio-core v0.1.12
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]     Checking hyper v0.11.18
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]     Checking webpki v0.17.0
[INFO] [stderr]     Checking sct v0.2.0
[INFO] [stderr]     Checking ct-logs v0.2.0
[INFO] [stderr]     Checking rustls v0.11.0
[INFO] [stderr]     Checking webpki-roots v0.13.0
[INFO] [stderr]     Checking tokio-rustls v0.4.0
[INFO] [stderr]     Checking hyper-rustls v0.11.0
[INFO] [stderr]     Checking github-rs v0.6.1
[INFO] [stderr]  Documenting gitsha 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(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `gitsha`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name gitsha src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-bf24b0f297d20f38.rmeta --extern github_rs=/opt/rustwide/target/debug/deps/libgithub_rs-236ff400359734be.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-47a43fb2483f17d0.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "85f002173c6454a854ebb5690e0ca6688556a2b54197f9d69015eda90d190262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f002173c6454a854ebb5690e0ca6688556a2b54197f9d69015eda90d190262", kill_on_drop: false }`
[INFO] [stdout] 85f002173c6454a854ebb5690e0ca6688556a2b54197f9d69015eda90d190262
