[INFO] cloning repository https://github.com/damody/sflow_read
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/damody/sflow_read" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamody%2Fsflow_read", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamody%2Fsflow_read'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b23cede752f2e3b9dd1876dd1b8e8e2a17d458b
[INFO] documenting damody/sflow_read against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdamody%2Fsflow_read" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/damody/sflow_read on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/damody/sflow_read
[INFO] finished tweaking git repo https://github.com/damody/sflow_read
[INFO] tweaked toml for git repo https://github.com/damody/sflow_read written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/damody/sflow_read already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v0.15.11
[INFO] [stderr]   Downloaded flate2 v1.0.4
[INFO] [stderr]   Downloaded mercator v0.1.2
[INFO] [stderr]   Downloaded tokio-openssl v0.2.1
[INFO] [stderr]   Downloaded actix-web v0.7.13
[INFO] [stderr]   Downloaded text_io v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf6886f247ec76a83920e887941c349914efeba5e9dfa0e454d28a170e0daefb
[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" "bf6886f247ec76a83920e887941c349914efeba5e9dfa0e454d28a170e0daefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf6886f247ec76a83920e887941c349914efeba5e9dfa0e454d28a170e0daefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf6886f247ec76a83920e887941c349914efeba5e9dfa0e454d28a170e0daefb", kill_on_drop: false }`
[INFO] [stdout] bf6886f247ec76a83920e887941c349914efeba5e9dfa0e454d28a170e0daefb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 996d76aa16f824a8b5e7becc5d9b2e96509d4e0be2d1ab4bb5b675f2ec95b819
[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" "996d76aa16f824a8b5e7becc5d9b2e96509d4e0be2d1ab4bb5b675f2ec95b819", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]     Checking htmlescape v0.3.1
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]     Checking mercator v0.1.2
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]    Compiling actix-web v0.7.13
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling pq-sys v0.4.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking crossbeam-epoch v0.6.0
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking flate2 v1.0.4
[INFO] [stderr]     Checking openssl v0.10.15
[INFO] [stderr]     Checking backtrace v0.2.3
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]    Compiling diesel v0.16.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.7
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking error-chain v0.1.12
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.13
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.2
[INFO] [stderr]     Checking tokio-signal v0.2.5
[INFO] [stderr]     Checking trust-dns-proto v0.4.3
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking tokio-openssl v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking trust-dns-resolver v0.9.1
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling diesel_infer_schema v0.16.0
[INFO] [stderr]    Compiling dotenv v0.10.1
[INFO] [stdout] error[E0659]: `error_chain` is ambiguous (derive helper attribute vs any other name)
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:23:40
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[cfg_attr(not(feature = "backtrace"), error_chain(backtrace = "false"))]
[INFO] [stdout]    |                                        ^^^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout] note: `error_chain` could refer to the derive helper attribute defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, error_chain)]
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] note: `error_chain` could also refer to the derive macro imported here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dotenv`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "996d76aa16f824a8b5e7becc5d9b2e96509d4e0be2d1ab4bb5b675f2ec95b819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "996d76aa16f824a8b5e7becc5d9b2e96509d4e0be2d1ab4bb5b675f2ec95b819", kill_on_drop: false }`
[INFO] [stdout] 996d76aa16f824a8b5e7becc5d9b2e96509d4e0be2d1ab4bb5b675f2ec95b819