[INFO] cloning repository https://github.com/chrisdickinson/registry
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisdickinson/registry" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fregistry", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fregistry'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94af2ca91c215657a0cd5ace24eae0adf7498639
[INFO] documenting chrisdickinson/registry 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%2Fchrisdickinson%2Fregistry" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisdickinson/registry 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/chrisdickinson/registry
[INFO] finished tweaking git repo https://github.com/chrisdickinson/registry
[INFO] tweaked toml for git repo https://github.com/chrisdickinson/registry written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisdickinson/registry 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] de605c25bf2a823f541b012212b94571d46b22d7f7595bde4d7f4d9675b22fab
[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" "de605c25bf2a823f541b012212b94571d46b22d7f7595bde4d7f4d9675b22fab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de605c25bf2a823f541b012212b94571d46b22d7f7595bde4d7f4d9675b22fab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de605c25bf2a823f541b012212b94571d46b22d7f7595bde4d7f4d9675b22fab", kill_on_drop: false }`
[INFO] [stdout] de605c25bf2a823f541b012212b94571d46b22d7f7595bde4d7f4d9675b22fab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 02168c7b7452b8c567a9af6723b0bd002621e4e46bbfad0dc910229af315e480
[INFO] running `Command { std: "docker" "start" "-a" "02168c7b7452b8c567a9af6723b0bd002621e4e46bbfad0dc910229af315e480", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling standback v0.2.8
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking arc-swap v0.4.6
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling curl v0.4.29
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]    Compiling isahc v0.9.3
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking omnom v2.1.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling rusoto_core v0.43.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling ring v0.16.14
[INFO] [stderr]    Compiling openssl-sys v0.9.57
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.31+curl-7.70.0
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking json_logger v0.1.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking error-chain v0.12.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking ct-logs v0.6.0
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking rustls-native-certs v0.3.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling async-trait v0.1.31
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking time v0.2.16
[INFO] [stderr]     Checking tracing v0.1.14
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking cookie v0.13.3
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]     Checking serde v1.0.111
[INFO] [stderr]     Checking piper v0.1.2
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking sluice v0.5.2
[INFO] [stderr]     Checking combine v4.2.1
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking smol v0.1.10
[INFO] [stderr]     Checking async-std v1.6.0
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking femme v2.1.0
[INFO] [stderr]     Checking serde_qs v0.5.2
[INFO] [stderr]     Checking ssri v5.0.0
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]     Checking rusoto_credential v0.43.0
[INFO] [stderr]     Checking hyper-rustls v0.20.0
[INFO] [stderr]     Checking http-types v2.1.0
[INFO] [stderr]     Checking async-native-tls v0.3.3
[INFO] [stderr]     Checking http-types v1.3.1
[INFO] [stderr]     Checking cacache v7.0.0
[INFO] [stderr]     Checking rusoto_signature v0.43.0
[INFO] [stderr]     Checking async-sse v2.1.0
[INFO] [stderr]     Checking async-h1 v2.0.1
[INFO] [stderr]     Checking rusoto_s3 v0.43.0
[INFO] [stderr]     Checking http-client v3.0.0
[INFO] [stderr]     Checking tide v0.9.0
[INFO] [stderr]     Checking surf v2.0.0-alpha.2 (https://github.com/chrisdickinson/surf?rev=header-names#135f3d07)
[INFO] [stderr]     Checking redis v0.16.1-alpha.0 (https://github.com/mitsuhiko/redis-rs#78b6343d)
[INFO] [stderr]  Documenting npm-registry 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: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 `npm-registry`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name npm_registry 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-8c061b3ea71c2288.rmeta --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-de6a53a3143e3b9b.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-491053a40abe1c48.so --extern base64=/opt/rustwide/target/debug/deps/libbase64-2e4211f0b09dfec7.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-be87a6d7a821f35e.rmeta --extern cacache=/opt/rustwide/target/debug/deps/libcacache-f2d20761191abf72.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-aeca5f355e8fbfb9.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-0fd6905350c37385.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-172a042b36419ace.rmeta --extern http_types=/opt/rustwide/target/debug/deps/libhttp_types-1b5b7e9eb77db55f.rmeta --extern json_logger=/opt/rustwide/target/debug/deps/libjson_logger-01180bfc7a68c98f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-85e430c763becc5d.rmeta --extern redis=/opt/rustwide/target/debug/deps/libredis-570a03e45016df94.rmeta --extern rusoto_core=/opt/rustwide/target/debug/deps/librusoto_core-c8d4a3c4d3ec77e5.rmeta --extern rusoto_credential=/opt/rustwide/target/debug/deps/librusoto_credential-d2b6969b26efd297.rmeta --extern rusoto_s3=/opt/rustwide/target/debug/deps/librusoto_s3-cac02444f69d221f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2387865c32f80cdc.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-cecbf0e0cfdfbbe9.rmeta --extern simple_logger=/opt/rustwide/target/debug/deps/libsimple_logger-659e8f54b7bd23b0.rmeta --extern surf=/opt/rustwide/target/debug/deps/libsurf-6fcfa49be3f90a33.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-644749effe26e322.rmeta --extern tide=/opt/rustwide/target/debug/deps/libtide-cabcf507b4104f6a.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-0c4403cd7f77ec57.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-022af957339d8343.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-b2aad1a507f57997.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "02168c7b7452b8c567a9af6723b0bd002621e4e46bbfad0dc910229af315e480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02168c7b7452b8c567a9af6723b0bd002621e4e46bbfad0dc910229af315e480", kill_on_drop: false }`
[INFO] [stdout] 02168c7b7452b8c567a9af6723b0bd002621e4e46bbfad0dc910229af315e480