[INFO] cloning repository https://github.com/lperlaki/open_dam
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lperlaki/open_dam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flperlaki%2Fopen_dam", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flperlaki%2Fopen_dam'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 171a5f0f5bf2b4c73d36ddb58cee00cd610ed2eb
[INFO] documenting lperlaki/open_dam 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%2Flperlaki%2Fopen_dam" "/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/lperlaki/open_dam 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/lperlaki/open_dam
[INFO] finished tweaking git repo https://github.com/lperlaki/open_dam
[INFO] tweaked toml for git repo https://github.com/lperlaki/open_dam written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lperlaki/open_dam 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 sys-info v0.5.8
[INFO] [stderr]   Downloaded checksum v0.2.1
[INFO] [stderr]   Downloaded rexif v0.3.6
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f402218a59513ed71df2223debf92ce9cf56f7a672aec18961186067b59da8c5
[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" "f402218a59513ed71df2223debf92ce9cf56f7a672aec18961186067b59da8c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f402218a59513ed71df2223debf92ce9cf56f7a672aec18961186067b59da8c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f402218a59513ed71df2223debf92ce9cf56f7a672aec18961186067b59da8c5", kill_on_drop: false }`
[INFO] [stdout] f402218a59513ed71df2223debf92ce9cf56f7a672aec18961186067b59da8c5
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 2230ee93e72363dfec35b88f16e4bce8d407833f3f7f80a9b030c742b112d0dd
[INFO] running `Command { std: "docker" "start" "-a" "2230ee93e72363dfec35b88f16e4bce8d407833f3f7f80a9b030c742b112d0dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling cc v1.0.30
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking checksum v0.2.1
[INFO] [stderr]     Checking rexif v0.3.6
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling libsqlite3-sys v0.16.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling sys-info v0.5.8
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking notify v4.0.13
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking rusqlite v0.20.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]  Documenting dam v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[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 `dam`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dam src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern checksum=/opt/rustwide/target/debug/deps/libchecksum-92435770cbea8e69.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-20d2db7aa91fdb01.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-30bca4b2240652b1.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-057d1e4bc2673252.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-a0ef1ac523c6ce31.rmeta --extern mime=/opt/rustwide/target/debug/deps/libmime-f757dff83a456f7e.rmeta --extern notify=/opt/rustwide/target/debug/deps/libnotify-13edb1583cccdc2d.rmeta --extern open=/opt/rustwide/target/debug/deps/libopen-fc7febd19e72ffae.rmeta --extern rexif=/opt/rustwide/target/debug/deps/librexif-96ba1edd087dce94.rmeta --extern rusqlite=/opt/rustwide/target/debug/deps/librusqlite-2a304ec401ad9b09.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4698ac8039e42332.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f3b7484b898da19e.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-c3ab6f353d342441.rmeta --extern sys_info=/opt/rustwide/target/debug/deps/libsys_info-13c79de2bb9d7637.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-2955e0fc1c458446.rmeta --cap-lints=warn --crate-version 0.1.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2230ee93e72363dfec35b88f16e4bce8d407833f3f7f80a9b030c742b112d0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2230ee93e72363dfec35b88f16e4bce8d407833f3f7f80a9b030c742b112d0dd", kill_on_drop: false }`
[INFO] [stdout] 2230ee93e72363dfec35b88f16e4bce8d407833f3f7f80a9b030c742b112d0dd