[INFO] cloning repository https://github.com/tureus/avvy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tureus/avvy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftureus%2Favvy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftureus%2Favvy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d1ce7db5498c45205aa1a4fdd56fb1f4f4f79f1
[INFO] documenting tureus/avvy against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftureus%2Favvy" "/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/tureus/avvy on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tureus/avvy
[INFO] finished tweaking git repo https://github.com/tureus/avvy
[INFO] tweaked toml for git repo https://github.com/tureus/avvy written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tureus/avvy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2be04e840e90537f355122f159b55ae6a2d22f9b943b7b3c802475deffa78170
[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" "2be04e840e90537f355122f159b55ae6a2d22f9b943b7b3c802475deffa78170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2be04e840e90537f355122f159b55ae6a2d22f9b943b7b3c802475deffa78170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be04e840e90537f355122f159b55ae6a2d22f9b943b7b3c802475deffa78170", kill_on_drop: false }`
[INFO] [stdout] 2be04e840e90537f355122f159b55ae6a2d22f9b943b7b3c802475deffa78170
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbc1332f41929ea3ab6dd678c93a11b2f8772253278cd43f86af0077216fd4c7
[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" "bbc1332f41929ea3ab6dd678c93a11b2f8772253278cd43f86af0077216fd4c7", kill_on_drop: false }`
[INFO] [stderr]     Checking integer-encoding v1.0.5
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking env_logger v0.5.11
[INFO] [stderr]  Documenting avvy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll, 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 `avvy`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name avvy 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 byteorder=/opt/rustwide/target/debug/deps/libbyteorder-82fcd075cc3e192c.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-94d9f3c164eb3f4f.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-1d4c5788c88be7dd.rmeta --extern integer_encoding=/opt/rustwide/target/debug/deps/libinteger_encoding-e477ed3543e2f9ca.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-8ec51cea995eaa54.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-939f3c816c1daae8.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cc18b503c007c682.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-60dba28800e8029b.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-03a6ca42e3180741.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bbc1332f41929ea3ab6dd678c93a11b2f8772253278cd43f86af0077216fd4c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc1332f41929ea3ab6dd678c93a11b2f8772253278cd43f86af0077216fd4c7", kill_on_drop: false }`
[INFO] [stdout] bbc1332f41929ea3ab6dd678c93a11b2f8772253278cd43f86af0077216fd4c7
