[INFO] cloning repository https://github.com/luyikk/kcpservice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luyikk/kcpservice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Fkcpservice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Fkcpservice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b37236f29297a78455e91b2d04b974453ef7fa2
[INFO] documenting luyikk/kcpservice against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Fkcpservice" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luyikk/kcpservice on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luyikk/kcpservice
[INFO] finished tweaking git repo https://github.com/luyikk/kcpservice
[INFO] tweaked toml for git repo https://github.com/luyikk/kcpservice written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/luyikk/kcpservice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.16
[INFO] [stderr]   Downloaded mimalloc v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9499f638505db8d76363271276946f9a0ffb253b0c4f64b0f1d00d711e7855f0
[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" "9499f638505db8d76363271276946f9a0ffb253b0c4f64b0f1d00d711e7855f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9499f638505db8d76363271276946f9a0ffb253b0c4f64b0f1d00d711e7855f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9499f638505db8d76363271276946f9a0ffb253b0c4f64b0f1d00d711e7855f0", kill_on_drop: false }`
[INFO] [stdout] 9499f638505db8d76363271276946f9a0ffb253b0c4f64b0f1d00d711e7855f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c7ece4cbbc78e7f9c78bb1cd13d82bcf0076aaaf75aa98ba4dd243e594d8e63
[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" "2c7ece4cbbc78e7f9c78bb1cd13d82bcf0076aaaf75aa98ba4dd243e594d8e63", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking xbinary v0.1.3
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.16
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.4.5
[INFO] [stderr]     Checking mimalloc v0.1.20
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking flexi_logger v0.16.1
[INFO] [stderr]  Documenting kcpgateway v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[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 `kcpgateway`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name kcpgateway 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 ahash=/opt/rustwide/target/debug/deps/libahash-1ffb670a0abc3bfa.rmeta --extern async_mutex=/opt/rustwide/target/debug/deps/libasync_mutex-a75798fed30c7ca9.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-2bf2a2e40b077963.so --extern bytes=/opt/rustwide/target/debug/deps/libbytes-c5714e68d7e46dbf.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-824254a233b062ae.rmeta --extern flexi_logger=/opt/rustwide/target/debug/deps/libflexi_logger-69ac3519af12d2ba.rmeta --extern json=/opt/rustwide/target/debug/deps/libjson-358ec06c6fad0497.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern mimalloc=/opt/rustwide/target/debug/deps/libmimalloc-fdd0e524a03efe18.rmeta --extern net2=/opt/rustwide/target/debug/deps/libnet2-3d91c6fc25f5bf46.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-d6b1f17dc90c76e9.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-3cb222e426d38cdd.rmeta --extern xbinary=/opt/rustwide/target/debug/deps/libxbinary-a11f02e15897e1e0.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2c7ece4cbbc78e7f9c78bb1cd13d82bcf0076aaaf75aa98ba4dd243e594d8e63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7ece4cbbc78e7f9c78bb1cd13d82bcf0076aaaf75aa98ba4dd243e594d8e63", kill_on_drop: false }`
[INFO] [stdout] 2c7ece4cbbc78e7f9c78bb1cd13d82bcf0076aaaf75aa98ba4dd243e594d8e63
