[INFO] cloning repository https://github.com/walterpie/circus-backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/walterpie/circus-backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalterpie%2Fcircus-backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalterpie%2Fcircus-backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb861e31e40b26dc3537d239a28f24aa35c646ee
[INFO] documenting walterpie/circus-backend 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%2Fwalterpie%2Fcircus-backend" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/walterpie/circus-backend 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/walterpie/circus-backend
[INFO] finished tweaking git repo https://github.com/walterpie/circus-backend
[INFO] tweaked toml for git repo https://github.com/walterpie/circus-backend written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/walterpie/circus-backend 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 async-trait v0.1.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9ebc21574b134ba44b66cb0af6ad70205fb3a7a5e25945361420784a2b5d58d
[INFO] running `Command { std: "docker" "start" "-a" "f9ebc21574b134ba44b66cb0af6ad70205fb3a7a5e25945361420784a2b5d58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9ebc21574b134ba44b66cb0af6ad70205fb3a7a5e25945361420784a2b5d58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9ebc21574b134ba44b66cb0af6ad70205fb3a7a5e25945361420784a2b5d58d", kill_on_drop: false }`
[INFO] [stdout] f9ebc21574b134ba44b66cb0af6ad70205fb3a7a5e25945361420784a2b5d58d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 3e75968c0e0b7b3e88fe737a0b6bebeb19820f6f8ea186101ad01f02edbc3462
[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" "3e75968c0e0b7b3e88fe737a0b6bebeb19820f6f8ea186101ad01f02edbc3462", kill_on_drop: false }`
[INFO] [stderr]     Checking bytestring v0.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking openssl-sys v0.9.54
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking postgres-protocol v0.5.1
[INFO] [stderr]     Checking postgres-types v0.1.1
[INFO] [stderr]     Checking openssl v0.10.28
[INFO] [stderr]     Checking pancurses v0.16.1
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling derive_more v0.99.3
[INFO] [stderr]    Compiling actix-macros v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.25
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling enum-as-inner v0.3.2
[INFO] [stderr]    Compiling actix-web-codegen v0.2.1
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking actix-threadpool v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking actix-service v1.0.5
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking actix-rt v1.0.0
[INFO] [stderr]     Checking trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]     Checking tokio-rustls v0.12.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking actix-codec v0.2.0
[INFO] [stderr]     Checking h2 v0.2.2
[INFO] [stderr]     Checking tokio-postgres v0.5.3
[INFO] [stderr]     Checking actix-utils v1.0.6
[INFO] [stderr]     Checking serde v1.0.105
[INFO] [stderr]     Checking actix-tls v1.0.0
[INFO] [stderr]     Checking actix-server v1.0.2
[INFO] [stderr]     Checking postgres-native-tls v0.3.0
[INFO] [stderr]     Checking actix-testing v1.0.0
[INFO] [stderr]     Checking trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-connect v1.0.2
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking actix-router v0.2.4
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking ron v0.5.1
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]     Checking actix-http v1.0.1
[INFO] [stderr]     Checking rust-argon2 v0.8.2
[INFO] [stderr]     Checking awc v1.0.1
[INFO] [stderr]     Checking actix-web v2.0.0
[INFO] [stderr]     Checking actix-identity v0.2.1
[INFO] [stderr]  Documenting circus-backend 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 `circus-backend`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name circus_backend 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 actix_http=/opt/rustwide/target/debug/deps/libactix_http-92c791277397a5c7.rmeta --extern actix_identity=/opt/rustwide/target/debug/deps/libactix_identity-1d2bd98cca8c4697.rmeta --extern actix_rt=/opt/rustwide/target/debug/deps/libactix_rt-ae6ac3c3f7b36009.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-993933642d887119.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-58a2445a9a8d1826.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-2d00af1704e04391.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-141d75c3d3360aa9.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-602560ceb79e3c39.rmeta --extern pancurses=/opt/rustwide/target/debug/deps/libpancurses-e0586ecb0e5aaf35.rmeta --extern postgres_native_tls=/opt/rustwide/target/debug/deps/libpostgres_native_tls-5651eb70ae4290a6.rmeta --extern postgres_types=/opt/rustwide/target/debug/deps/libpostgres_types-d3cf6a097573dcc7.rmeta --extern pulldown_cmark=/opt/rustwide/target/debug/deps/libpulldown_cmark-f694461b05bd197f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d14fdc8735966214.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-9c31d5e7e1944393.rmeta --extern argon2=/opt/rustwide/target/debug/deps/libargon2-1a77fad1baf14ba7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4c69d0af5b2e13f4.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d0c5f18645cc784f.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-85dd281a7f4c11d3.rmeta --extern tokio_postgres=/opt/rustwide/target/debug/deps/libtokio_postgres-770d47ee829f6262.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3e75968c0e0b7b3e88fe737a0b6bebeb19820f6f8ea186101ad01f02edbc3462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e75968c0e0b7b3e88fe737a0b6bebeb19820f6f8ea186101ad01f02edbc3462", kill_on_drop: false }`
[INFO] [stdout] 3e75968c0e0b7b3e88fe737a0b6bebeb19820f6f8ea186101ad01f02edbc3462