[INFO] cloning repository https://github.com/smores56/grease_api
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smores56/grease_api" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmores56%2Fgrease_api", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmores56%2Fgrease_api'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2e2e161306f4eaa11cdb606b24b5567aa00d5e6
[INFO] documenting smores56/grease_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%2Fsmores56%2Fgrease_api" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/smores56/grease_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/smores56/grease_api
[INFO] finished tweaking git repo https://github.com/smores56/grease_api
[INFO] tweaked toml for git repo https://github.com/smores56/grease_api written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/smores56/grease_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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 23991239da5df7d842179b5ed85759f9324379e87ec5b8f0fe4e5ac01ddafb4e
[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" "23991239da5df7d842179b5ed85759f9324379e87ec5b8f0fe4e5ac01ddafb4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23991239da5df7d842179b5ed85759f9324379e87ec5b8f0fe4e5ac01ddafb4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23991239da5df7d842179b5ed85759f9324379e87ec5b8f0fe4e5ac01ddafb4e", kill_on_drop: false }`
[INFO] [stdout] 23991239da5df7d842179b5ed85759f9324379e87ec5b8f0fe4e5ac01ddafb4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 6baac93e24f6c98f91d3903f6941bedd8afe3d619744d758f67612a2ec1e56d2
[INFO] running `Command { std: "docker" "start" "-a" "6baac93e24f6c98f91d3903f6941bedd8afe3d619744d758f67612a2ec1e56d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling lalrpop-util v0.17.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling mysqlclient-sys v0.2.4 (https://github.com/pzmarzly/mysqlclient-sys?rev=acd1b2b#acd1b2bc)
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking strum v0.17.1
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking htmlescape v0.3.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking blowfish v0.4.0
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking bcrypt v0.4.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling diesel-derive-enum v0.4.4
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking cgi v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking dotenv v0.14.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking icalendar v0.8.0
[INFO] [stderr]     Checking diesel v1.4.3
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling typed-html-macros v0.2.2
[INFO] [stderr]     Checking typed-html v0.2.2
[INFO] [stderr]  Documenting grease_api v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/main.rs:236:1
[INFO] [stdout]     |
[INFO] [stdout] 236 | #![feature(drain_filter)]
[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 `grease_api`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name grease_api 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 base64=/opt/rustwide/target/debug/deps/libbase64-d973ad0bb6bed0e7.rmeta --extern bcrypt=/opt/rustwide/target/debug/deps/libbcrypt-b55f4448ef6b39cc.rmeta --extern cgi=/opt/rustwide/target/debug/deps/libcgi-af62b11d996078f9.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-513150075e305085.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-6194053f10233d42.rmeta --extern diesel_derive_enum=/opt/rustwide/target/debug/deps/libdiesel_derive_enum-b76faab23f9d111c.so --extern dotenv=/opt/rustwide/target/debug/deps/libdotenv-c636620ac41dc183.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-91c2b32d0ceb9511.rmeta --extern icalendar=/opt/rustwide/target/debug/deps/libicalendar-81ebf04d7a80c353.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-5ad68357c26dda65.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-c11b2135635825d2.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-49f54ddd307c9d11.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4ac41caa0bd30233.rmeta --extern typed_html=/opt/rustwide/target/debug/deps/libtyped_html-7ea0e83d4fa60553.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-2bc9ebc7f74c3212.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-da2789d7b63a3b7e.rmeta --extern zip=/opt/rustwide/target/debug/deps/libzip-ca515e9fac3f41d2.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "6baac93e24f6c98f91d3903f6941bedd8afe3d619744d758f67612a2ec1e56d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6baac93e24f6c98f91d3903f6941bedd8afe3d619744d758f67612a2ec1e56d2", kill_on_drop: false }`
[INFO] [stdout] 6baac93e24f6c98f91d3903f6941bedd8afe3d619744d758f67612a2ec1e56d2