[INFO] cloning repository https://github.com/gleyba/test_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gleyba/test_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgleyba%2Ftest_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgleyba%2Ftest_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af940ec7783077fe746c4b121bbdf5101c0501a7
[INFO] documenting gleyba/test_db 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%2Fgleyba%2Ftest_db" "/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/gleyba/test_db 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/gleyba/test_db
[INFO] finished tweaking git repo https://github.com/gleyba/test_db
[INFO] tweaked toml for git repo https://github.com/gleyba/test_db written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/gleyba/test_db 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61670dec733ebd539f907fce68a7abef7ce39fadc63564fbaec29faa391c90ea
[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" "61670dec733ebd539f907fce68a7abef7ce39fadc63564fbaec29faa391c90ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61670dec733ebd539f907fce68a7abef7ce39fadc63564fbaec29faa391c90ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61670dec733ebd539f907fce68a7abef7ce39fadc63564fbaec29faa391c90ea", kill_on_drop: false }`
[INFO] [stdout] 61670dec733ebd539f907fce68a7abef7ce39fadc63564fbaec29faa391c90ea
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea169d17d8bf8ced3ac904921fff5d9b047356e869fc6bdc66fff4b292d9d09d
[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" "ea169d17d8bf8ced3ac904921fff5d9b047356e869fc6bdc66fff4b292d9d09d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling inlinable_string v0.1.11
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking binascii v0.1.4
[INFO] [stderr]     Checking libflate_lz77 v1.0.0
[INFO] [stderr]     Checking ubyte v0.9.1
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking guard v0.5.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.1.0 (https://github.com/SergioBenitez/proc-macro2-diagnostics.git?rev=13fbb43#13fbb43d)
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling cookie v0.15.0-dev (https://github.com/SergioBenitez/cookie-rs.git?rev=3795f2e#3795f2e6)
[INFO] [stderr]    Compiling rocket_http v0.5.0-dev (https://github.com/SergioBenitez/Rocket.git#02b79e28)
[INFO] [stderr]     Checking dashmap v4.0.0-rc6
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling tracing-core v0.1.14
[INFO] [stderr]    Compiling rocket v0.5.0-dev (https://github.com/SergioBenitez/Rocket.git#02b79e28)
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling mdbx-sys v0.7.1
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]     Checking sqlparser v0.6.1
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]     Checking libflate v1.0.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.15
[INFO] [stderr]    Compiling block-cipher v0.7.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking slog-kvfilter v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling aes-soft v0.4.0
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling polyval v0.4.0
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]     Checking slog-async v2.5.0
[INFO] [stderr]    Compiling hkdf v0.9.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling aes v0.4.0
[INFO] [stderr]    Compiling ghash v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling aes-gcm v0.6.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking slog-stdlog v4.0.0
[INFO] [stderr]     Checking slog-term v2.6.0
[INFO] [stderr]     Checking mimalloc v0.1.19
[INFO] [stderr]    Compiling devise_core v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling pear_codegen v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling devise_codegen v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling async-trait v0.1.37
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]    Compiling ref-cast v1.0.2
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]     Checking trackable v1.0.0
[INFO] [stderr]    Compiling time-macros v0.1.0
[INFO] [stderr]    Compiling devise v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling pear v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking sloggers v1.0.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]     Checking flexbuffers v0.1.1
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-dev (https://github.com/SergioBenitez/Rocket.git#02b79e28)
[INFO] [stderr]     Checking rocket_contrib v0.5.0-dev (https://github.com/SergioBenitez/Rocket.git#02b79e28)
[INFO] [stderr]  Documenting test_db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.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 `test_db`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name test_db 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 bytes=/opt/rustwide/target/debug/deps/libbytes-e39cb00dc7b3284b.rmeta --extern csv_core=/opt/rustwide/target/debug/deps/libcsv_core-0ea58eb568c99807.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-705683b4de506eb7.rmeta --extern flexbuffers=/opt/rustwide/target/debug/deps/libflexbuffers-ec2ce4a87d16c0a9.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-3aeddb4c42cbfbc2.rmeta --extern guard=/opt/rustwide/target/debug/deps/libguard-e05e535cdbd776ff.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-a1630aa670571c9e.rmeta --extern json=/opt/rustwide/target/debug/deps/libjson-73b30e5b26eceef7.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-d5a78e9e7500ef4a.rmeta --extern mdbx_sys=/opt/rustwide/target/debug/deps/libmdbx_sys-d5469a6b83d51da6.rmeta --extern mimalloc=/opt/rustwide/target/debug/deps/libmimalloc-320703e70ce6ff2b.rmeta --extern rocket=/opt/rustwide/target/debug/deps/librocket-0a04d0cc7e1a1d85.rmeta --extern rocket_contrib=/opt/rustwide/target/debug/deps/librocket_contrib-18bebefe5abe821a.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-f96788f35f7718ca.rmeta --extern sloggers=/opt/rustwide/target/debug/deps/libsloggers-8e4e0ed6abf8784f.rmeta --extern sqlparser=/opt/rustwide/target/debug/deps/libsqlparser-58e6a1ae7e646487.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-86c7cbb714ef0c5a.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-f4f3704ae906c75c.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ea169d17d8bf8ced3ac904921fff5d9b047356e869fc6bdc66fff4b292d9d09d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea169d17d8bf8ced3ac904921fff5d9b047356e869fc6bdc66fff4b292d9d09d", kill_on_drop: false }`
[INFO] [stdout] ea169d17d8bf8ced3ac904921fff5d9b047356e869fc6bdc66fff4b292d9d09d