[INFO] cloning repository https://github.com/wgslr/vimbrute
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wgslr/vimbrute" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwgslr%2Fvimbrute", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwgslr%2Fvimbrute'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 323487f11432617d8234a510227eff4fc06c32cc
[INFO] documenting wgslr/vimbrute against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwgslr%2Fvimbrute" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wgslr/vimbrute on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wgslr/vimbrute
[INFO] finished tweaking git repo https://github.com/wgslr/vimbrute
[INFO] tweaked toml for git repo https://github.com/wgslr/vimbrute written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/wgslr/vimbrute already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] 7a9a977791759c76188310bbb77068b5eaecec20167aaa4334b200b03b1577e0
[INFO] running `Command { std: "docker" "start" "-a" "7a9a977791759c76188310bbb77068b5eaecec20167aaa4334b200b03b1577e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a9a977791759c76188310bbb77068b5eaecec20167aaa4334b200b03b1577e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a9a977791759c76188310bbb77068b5eaecec20167aaa4334b200b03b1577e0", kill_on_drop: false }`
[INFO] [stdout] 7a9a977791759c76188310bbb77068b5eaecec20167aaa4334b200b03b1577e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.46.0" "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] f166008d62d30ddaf58d2ed81e78ac14640a903bf17933aec47ec25cd1b25aa9
[INFO] running `Command { std: "docker" "start" "-a" "f166008d62d30ddaf58d2ed81e78ac14640a903bf17933aec47ec25cd1b25aa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking block-buffer v0.8.0
[INFO] [stderr]     Checking blowfish v0.5.0
[INFO] [stderr]     Checking sha2 v0.9.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]  Documenting vimbrute v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `vimbrute`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name vimbrute src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern blowfish=/opt/rustwide/target/debug/deps/libblowfish-f40f21ad1d7defc1.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-cdbbc07100f440a1.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-3348e56d269dc66e.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-ee314e449b8625a4.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-b66d3661b00c8eee.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-88b93a2a096ee79e.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-e8cad3237491d7be.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-1f0d41e76b0e91ad.rmeta --extern threadpool=/opt/rustwide/target/debug/deps/libthreadpool-a952bc2bd5388ee9.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "f166008d62d30ddaf58d2ed81e78ac14640a903bf17933aec47ec25cd1b25aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f166008d62d30ddaf58d2ed81e78ac14640a903bf17933aec47ec25cd1b25aa9", kill_on_drop: false }`
[INFO] [stdout] f166008d62d30ddaf58d2ed81e78ac14640a903bf17933aec47ec25cd1b25aa9