[INFO] cloning repository https://github.com/Yamakaky/rvpn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yamakaky/rvpn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYamakaky%2Frvpn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYamakaky%2Frvpn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5baa44e978b4acfa65280faab552f488221f88cb
[INFO] documenting Yamakaky/rvpn 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%2FYamakaky%2Frvpn" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yamakaky/rvpn 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/Yamakaky/rvpn
[INFO] finished tweaking git repo https://github.com/Yamakaky/rvpn
[INFO] tweaked toml for git repo https://github.com/Yamakaky/rvpn written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Yamakaky/rvpn 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 56c0bb386d495f1e577eb4cf1751f7c37bbfddd1ea38eecf3e1c5dabcb5609ae
[INFO] running `Command { std: "docker" "start" "-a" "56c0bb386d495f1e577eb4cf1751f7c37bbfddd1ea38eecf3e1c5dabcb5609ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56c0bb386d495f1e577eb4cf1751f7c37bbfddd1ea38eecf3e1c5dabcb5609ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56c0bb386d495f1e577eb4cf1751f7c37bbfddd1ea38eecf3e1c5dabcb5609ae", kill_on_drop: false }`
[INFO] [stdout] 56c0bb386d495f1e577eb4cf1751f7c37bbfddd1ea38eecf3e1c5dabcb5609ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] e4ea8e6e5f6d458c5408580cb7b8c409722c969db1c9ce402a44fdeeb8f0d482
[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" "e4ea8e6e5f6d458c5408580cb7b8c409722c969db1c9ce402a44fdeeb8f0d482", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.40
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking rustc-demangle v0.1.3
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking ioctl v0.3.3
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking futures v0.1.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]     Checking backtrace v0.3.0
[INFO] [stderr]     Checking error-chain v0.7.1
[INFO] [stderr]     Checking mio v0.6.1
[INFO] [stderr]     Checking tokio-core v0.1.1
[INFO] [stderr]     Checking tun v0.1.0 (git://github.com/Yamakaky/tun-rs.git#44eca9ce)
[INFO] [stderr]     Checking rvpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rvpn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio_core::io::Io`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio_core::io::Io;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio_core::reactor`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio_core::reactor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain! {
[INFO] [stdout] 13 | |     links {
[INFO] [stdout] 14 | |         Tun(tun::Error, tun::ErrorKind);
[INFO] [stdout] 15 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     }
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / error_chain! {
[INFO] [stdout] 13 | |     links {
[INFO] [stdout] 14 | |         Tun(tun::Error, tun::ErrorKind);
[INFO] [stdout] 15 | |     }
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |     }
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Stream`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use futures::Stream;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.29s
[INFO] running `Command { std: "docker" "inspect" "e4ea8e6e5f6d458c5408580cb7b8c409722c969db1c9ce402a44fdeeb8f0d482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ea8e6e5f6d458c5408580cb7b8c409722c969db1c9ce402a44fdeeb8f0d482", kill_on_drop: false }`
[INFO] [stdout] e4ea8e6e5f6d458c5408580cb7b8c409722c969db1c9ce402a44fdeeb8f0d482