[INFO] cloning repository https://github.com/masonblier/langis-api
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/masonblier/langis-api" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonblier%2Flangis-api", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonblier%2Flangis-api'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c362e45bd0658ede7b1bb45db5a30cda045d9ff9
[INFO] documenting masonblier/langis-api 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%2Fmasonblier%2Flangis-api" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masonblier/langis-api 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/masonblier/langis-api
[INFO] finished tweaking git repo https://github.com/masonblier/langis-api
[INFO] tweaked toml for git repo https://github.com/masonblier/langis-api written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/masonblier/langis-api 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 5718f9cad42282bc4e4e077cee40c0a0a9a520998411eac231abf97b5c6670b9
[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" "5718f9cad42282bc4e4e077cee40c0a0a9a520998411eac231abf97b5c6670b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5718f9cad42282bc4e4e077cee40c0a0a9a520998411eac231abf97b5c6670b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5718f9cad42282bc4e4e077cee40c0a0a9a520998411eac231abf97b5c6670b9", kill_on_drop: false }`
[INFO] [stdout] 5718f9cad42282bc4e4e077cee40c0a0a9a520998411eac231abf97b5c6670b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7050a89a6728d36a979927629d31bf747be9b69d2224d121f44a478d3e4df047
[INFO] running `Command { std: "docker" "start" "-a" "7050a89a6728d36a979927629d31bf747be9b69d2224d121f44a478d3e4df047", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling bindgen v0.48.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pq-sys v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.7.9
[INFO] [stderr]     Checking quick-xml v0.17.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking resolv-conf v0.6.3
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking r2d2 v0.8.8
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.33
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling ring v0.16.11
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking actix-codec v0.2.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling derive_more v0.99.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling actix-macros v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]    Compiling enum-as-inner v0.3.2
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling actix-web-codegen v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]    Compiling which v2.0.1
[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 h2 v0.2.2
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking actix-rt v1.0.0
[INFO] [stderr]     Checking trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-utils v1.0.6
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking actix-server v1.0.2
[INFO] [stderr]     Checking actix-tls v1.0.0
[INFO] [stderr]     Checking trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-testing v1.0.0
[INFO] [stderr]     Checking actix-connect v1.0.2
[INFO] [stderr]    Compiling argonautica v0.2.0
[INFO] [stderr]     Checking chrono v0.4.10
[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 diesel v1.4.3
[INFO] [stderr]     Checking actix-http v1.0.1
[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]     Checking migrations_internals v1.4.1
[INFO] [stderr]    Compiling migrations_macros v1.4.2
[INFO] [stderr]     Checking diesel_migrations v1.4.0
[INFO] [stderr]     Checking langis v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting langis v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[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 `langis`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name main 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-73ccfd32de8cdd23.rmeta --extern actix_identity=/opt/rustwide/target/debug/deps/libactix_identity-4cad39e8febdec3d.rmeta --extern actix_rt=/opt/rustwide/target/debug/deps/libactix_rt-c2a6e2362bc3cd04.rmeta --extern actix_service=/opt/rustwide/target/debug/deps/libactix_service-39f2aad196155019.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-f29c232e7f1698b1.rmeta --extern argonautica=/opt/rustwide/target/debug/deps/libargonautica-1ade404c70ff7e43.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-be87a6d7a821f35e.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-d9d4e00510dc0801.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-c5aa24ef8d1d3964.so --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-13f703df32e91269.rmeta --extern diesel_migrations=/opt/rustwide/target/debug/deps/libdiesel_migrations-ec5970e4bf20649e.rmeta --extern dotenv=/opt/rustwide/target/debug/deps/libdotenv-1c1d02a6c9463162.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-2cd08aed25d369a5.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-b9ee1582c19290ec.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-30a3734f28de156f.rmeta --extern langis=/opt/rustwide/target/debug/deps/liblangis-0f4179f91a61a663.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern quick_xml=/opt/rustwide/target/debug/deps/libquick_xml-31f5a27989194a9a.rmeta --extern r2d2=/opt/rustwide/target/debug/deps/libr2d2-5df3ff333996c2b9.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b6c46a2400e30e95.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-cf65f9922401cc80.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-90d79d91b314214f.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4f504730d4fcad79.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7050a89a6728d36a979927629d31bf747be9b69d2224d121f44a478d3e4df047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7050a89a6728d36a979927629d31bf747be9b69d2224d121f44a478d3e4df047", kill_on_drop: false }`
[INFO] [stdout] 7050a89a6728d36a979927629d31bf747be9b69d2224d121f44a478d3e4df047