[INFO] cloning repository https://github.com/rubytogether/kirby
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rubytogether/kirby" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frubytogether%2Fkirby", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frubytogether%2Fkirby'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab3ae92e0c6d5518d5e5e31cbe66002408f44893
[INFO] documenting rubytogether/kirby against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frubytogether%2Fkirby" "/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/rubytogether/kirby on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rubytogether/kirby
[INFO] finished tweaking git repo https://github.com/rubytogether/kirby
[INFO] tweaked toml for git repo https://github.com/rubytogether/kirby written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/rubytogether/kirby already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/srijs/rust-aws-lambda`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusoto_core v0.42.0
[INFO] [stderr]   Downloaded tokio-rustls v0.10.3
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded reexport-proc-macro v1.0.7
[INFO] [stderr]   Downloaded hyper-rustls v0.17.1
[INFO] [stderr]   Downloaded serde_bytes v0.10.5
[INFO] [stderr]   Downloaded rusoto_credential v0.42.0
[INFO] [stderr]   Downloaded rusoto_signature v0.42.0
[INFO] [stderr]   Downloaded rusoto_s3 v0.42.0
[INFO] [stderr]   Downloaded webpki-roots v0.17.0
[INFO] [stderr]   Downloaded serde_schema_derive v0.0.1
[INFO] [stderr]   Downloaded aws_lambda_events v0.1.5
[INFO] [stderr]   Downloaded serde_schema v0.0.1
[INFO] [stderr]   Downloaded enum-map v0.4.1
[INFO] [stderr]   Downloaded gob v0.1.0
[INFO] [stderr]   Downloaded backtrace-parser v0.1.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efd9e44215120fa97a071ab36a9d32b2c4802d268d57ded71a1749edfd172fdf
[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" "efd9e44215120fa97a071ab36a9d32b2c4802d268d57ded71a1749edfd172fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efd9e44215120fa97a071ab36a9d32b2c4802d268d57ded71a1749edfd172fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd9e44215120fa97a071ab36a9d32b2c4802d268d57ded71a1749edfd172fdf", kill_on_drop: false }`
[INFO] [stdout] efd9e44215120fa97a071ab36a9d32b2c4802d268d57ded71a1749edfd172fdf
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e8cf186fc2eb10e3280b9502d446a7acd80cc4fdb1b9c1eb63435c091b291b
[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" "27e8cf186fc2eb10e3280b9502d446a7acd80cc4fdb1b9c1eb63435c091b291b", 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]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking reexport-proc-macro v1.0.7
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling rusoto_core v0.42.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]    Compiling serde_schema_derive v0.0.1
[INFO] [stderr]     Checking ct-logs v0.6.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking backtrace-parser v0.1.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]     Checking enum-map v0.4.1
[INFO] [stderr]    Compiling camino v1.0.7
[INFO] [stderr]    Compiling cargo-platform v0.1.2
[INFO] [stderr]     Checking serde_schema v0.0.1
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking gob v0.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-rustls v0.10.3
[INFO] [stderr]     Checking aws_lambda_events v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-signal v0.2.9
[INFO] [stderr]    Compiling cargo_metadata v0.14.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-process v0.2.5
[INFO] [stderr]     Checking aws_lambda_runtime v0.1.0 (https://github.com/srijs/rust-aws-lambda#d4908242)
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking aws_lambda_gateway v0.1.0 (https://github.com/srijs/rust-aws-lambda#d4908242)
[INFO] [stderr]    Compiling skeptic v0.13.7
[INFO] [stderr]    Compiling aws_lambda v0.1.0 (https://github.com/srijs/rust-aws-lambda#d4908242)
[INFO] [stderr]     Checking rusoto_credential v0.42.0
[INFO] [stderr]     Checking hyper-rustls v0.17.1
[INFO] [stderr]     Checking rusoto_signature v0.42.0
[INFO] [stderr]     Checking rusoto_s3 v0.42.0
[INFO] [stderr]     Checking kirby v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting kirby 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kirby` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `kirby`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name kirby src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3897b9c4b6e70a4e -L dependency=/opt/rustwide/target/debug/deps --extern argparse=/opt/rustwide/target/debug/deps/libargparse-b70aca179a207e2c.rmeta --extern aws_lambda=/opt/rustwide/target/debug/deps/libaws_lambda-ec1b7d6dc6b299c7.rmeta --extern enum_map=/opt/rustwide/target/debug/deps/libenum_map-aa4287a1e0aef0a0.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-11e7c2ac074ff2d6.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-6536df3c310e6608.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-9bc12257f57dd5ae.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-7d855491f56d7595.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-34a4ccf2494fe9ba.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-49d258276b42d070.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-83c7c2ed483b028f.rmeta --extern rusoto_core=/opt/rustwide/target/debug/deps/librusoto_core-ff73cac0f1feef18.rmeta --extern rusoto_s3=/opt/rustwide/target/debug/deps/librusoto_s3-42d1ea7ca9a525ab.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b5c18669680a3d71.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-2348a8cf403d667b.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-8e2b64de3ad1ad87.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-abe7ebfdb88a094f.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "27e8cf186fc2eb10e3280b9502d446a7acd80cc4fdb1b9c1eb63435c091b291b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e8cf186fc2eb10e3280b9502d446a7acd80cc4fdb1b9c1eb63435c091b291b", kill_on_drop: false }`
[INFO] [stdout] 27e8cf186fc2eb10e3280b9502d446a7acd80cc4fdb1b9c1eb63435c091b291b