[INFO] cloning repository https://github.com/wildbook/delua
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wildbook/delua" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildbook%2Fdelua", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildbook%2Fdelua'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fe468b52ebfcdaf53a627b0080bb43ca81e73c2
[INFO] documenting wildbook/delua against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwildbook%2Fdelua" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wildbook/delua on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/wildbook/delua
[INFO] finished tweaking git repo https://github.com/wildbook/delua
[INFO] tweaked toml for git repo https://github.com/wildbook/delua written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/wildbook/delua already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb351af7b20cee3930e013555c4400776a7aa8a39a3002ce2889ad0fea36d4f4
[INFO] running `Command { std: "docker" "start" "-a" "eb351af7b20cee3930e013555c4400776a7aa8a39a3002ce2889ad0fea36d4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb351af7b20cee3930e013555c4400776a7aa8a39a3002ce2889ad0fea36d4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb351af7b20cee3930e013555c4400776a7aa8a39a3002ce2889ad0fea36d4f4", kill_on_drop: false }`
[INFO] [stdout] eb351af7b20cee3930e013555c4400776a7aa8a39a3002ce2889ad0fea36d4f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20b63a41a9f0d43aac86b6d362a7ec399bb340e20cb8acfaf848b9373c83e735
[INFO] running `Command { std: "docker" "start" "-a" "20b63a41a9f0d43aac86b6d362a7ec399bb340e20cb8acfaf848b9373c83e735", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking bytestream v0.4.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling shrinkwraprs v0.3.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]  Documenting delua 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(array_windows)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `delua`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name delua 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 byteorder=/opt/rustwide/target/debug/deps/libbyteorder-b55b8e72bfe1c077.rmeta --extern bytestream=/opt/rustwide/target/debug/deps/libbytestream-8ed5865d556399b2.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-137804f65ebf985b.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9c436d67d12d7b9e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f8abb66ffc16068c.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-28355f3edc7ea5f2.rmeta --extern shrinkwraprs=/opt/rustwide/target/debug/deps/libshrinkwraprs-e7741cfda5764442.so --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-38a1ba72b7985187.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "20b63a41a9f0d43aac86b6d362a7ec399bb340e20cb8acfaf848b9373c83e735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b63a41a9f0d43aac86b6d362a7ec399bb340e20cb8acfaf848b9373c83e735", kill_on_drop: false }`
[INFO] [stdout] 20b63a41a9f0d43aac86b6d362a7ec399bb340e20cb8acfaf848b9373c83e735
