[INFO] cloning repository https://github.com/oeb25/riport
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oeb25/riport" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foeb25%2Friport", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foeb25%2Friport'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 962a093c0fdcff7d0767efbebdf4b6eeb5b1ea92
[INFO] documenting oeb25/riport 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%2Foeb25%2Friport" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oeb25/riport 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] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/oeb25/riport
[INFO] finished tweaking git repo https://github.com/oeb25/riport
[INFO] tweaked toml for git repo https://github.com/oeb25/riport written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/oeb25/riport 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 v_htmlescape v0.4.5
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[INFO] [stderr]   Downloaded actix-files v0.1.4
[INFO] [stderr]   Downloaded actix-connect v0.2.3
[INFO] [stderr]   Downloaded v_escape_derive v0.5.5
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[INFO] [stderr]   Downloaded pandoc_types v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 429bfdfbe5dd45194a6b59f82ae0b9e9075e8871e3ea26a241f2dd9653c23fa7
[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" "429bfdfbe5dd45194a6b59f82ae0b9e9075e8871e3ea26a241f2dd9653c23fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "429bfdfbe5dd45194a6b59f82ae0b9e9075e8871e3ea26a241f2dd9653c23fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "429bfdfbe5dd45194a6b59f82ae0b9e9075e8871e3ea26a241f2dd9653c23fa7", kill_on_drop: false }`
[INFO] [stdout] 429bfdfbe5dd45194a6b59f82ae0b9e9075e8871e3ea26a241f2dd9653c23fa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] ab0a4970ead5f65692346f2646d95ace7b877d1177ad15533f6782c261514dfe
[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" "ab0a4970ead5f65692346f2646d95ace7b877d1177ad15533f6782c261514dfe", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_derive v1.0.99
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[INFO] [stderr]    Compiling derive_more v0.15.0
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[INFO] [stderr]    Compiling actix-web-codegen v0.1.2
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling actix_derive v0.4.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.7.4
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking trust-dns-resolver v0.11.1
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[INFO] [stderr]     Checking actix-connect v0.2.3
[INFO] [stderr]     Checking actix-rt v0.2.4
[INFO] [stderr]     Checking actix-server v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking actix-router v0.1.5
[INFO] [stderr]     Checking actix-http v0.2.9
[INFO] [stderr]     Checking pandoc_types v0.2.0
[INFO] [stderr]     Checking awc v0.2.4
[INFO] [stderr]     Checking actix v0.8.3
[INFO] [stderr]     Checking actix-web v1.0.7
[INFO] [stderr]     Checking actix-files v0.1.4
[INFO] [stderr]     Checking actix-web-actors v1.0.2
[INFO] [stderr]  Documenting riport-2 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_await)]
[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 `riport-2`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name riport_2 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=/opt/rustwide/target/debug/deps/libactix-ea7454abc4980d3a.rmeta --extern actix_files=/opt/rustwide/target/debug/deps/libactix_files-554de8634eecaecc.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-47580602351775c8.rmeta --extern actix_web_actors=/opt/rustwide/target/debug/deps/libactix_web_actors-da77236e724e67e0.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-6801c33cdc34376f.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern listenfd=/opt/rustwide/target/debug/deps/liblistenfd-27c4312aa6aff55c.rmeta --extern pandoc_types=/opt/rustwide/target/debug/deps/libpandoc_types-6226defa072a87a7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-6ad61adf00e0932f.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-023336fcd83a752d.rmeta --extern tempdir=/opt/rustwide/target/debug/deps/libtempdir-df53d91b36d7b965.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ab0a4970ead5f65692346f2646d95ace7b877d1177ad15533f6782c261514dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab0a4970ead5f65692346f2646d95ace7b877d1177ad15533f6782c261514dfe", kill_on_drop: false }`
[INFO] [stdout] ab0a4970ead5f65692346f2646d95ace7b877d1177ad15533f6782c261514dfe