[INFO] cloning repository https://github.com/Celti/zero-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Celti/zero-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCelti%2Fzero-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCelti%2Fzero-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc2d872c008c8c6fea0859179ed86837ff12b868
[INFO] documenting Celti/zero-rs 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%2FCelti%2Fzero-rs" "/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/Celti/zero-rs 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/Celti/zero-rs
[INFO] finished tweaking git repo https://github.com/Celti/zero-rs
[INFO] tweaked toml for git repo https://github.com/Celti/zero-rs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Celti/zero-rs 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-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] 194772d01b5da1bcce502a4e6e642b4e4e414391bf9aacd1e4e22e716017c7bf
[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" "194772d01b5da1bcce502a4e6e642b4e4e414391bf9aacd1e4e22e716017c7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "194772d01b5da1bcce502a4e6e642b4e4e414391bf9aacd1e4e22e716017c7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "194772d01b5da1bcce502a4e6e642b4e4e414391bf9aacd1e4e22e716017c7bf", kill_on_drop: false }`
[INFO] [stdout] 194772d01b5da1bcce502a4e6e642b4e4e414391bf9aacd1e4e22e716017c7bf
[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] [stdout] 9eb59a61795a4c9674d0e28c68ded08e58bcedc3510054b6d05bffa1a77bd2d3
[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" "9eb59a61795a4c9674d0e28c68ded08e58bcedc3510054b6d05bffa1a77bd2d3", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking futures v0.1.24
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling magic-sys v0.2.0
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.4
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking slice-deque v0.1.13
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking httparse v1.3.3
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking lock_api v0.1.4
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking log-panics v2.0.0
[INFO] [stderr]     Checking r2d2 v0.8.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]     Checking magic v0.12.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking mustache v0.8.2
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking buf_redux v0.7.1
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking sha-1 v0.7.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling ring v0.13.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-timer v0.2.7
[INFO] [stderr]     Checking tokio-current-thread v0.1.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.7
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking tungstenite v0.6.0
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.2
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking tiny_http v0.6.0
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking pretty_env_logger v0.2.4
[INFO] [stderr]     Checking nickel v0.10.1
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking multipart v0.15.3
[INFO] [stderr]     Checking hyper v0.12.11
[INFO] [stderr]    Compiling diesel_derives v1.3.0
[INFO] [stderr]     Checking serde_urlencoded v0.5.3
[INFO] [stderr]     Checking serde_json v1.0.31
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking warp v0.1.4
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking diesel v1.3.3
[INFO] [stderr]  Documenting zero 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(int_to_from_bytes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(tool_lints)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `zero`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name zero 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 bytes=/opt/rustwide/target/debug/deps/libbytes-83942e19a52444f9.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-0db0da10ddbb4ee2.rmeta --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-8c1212e8c8ff82ca.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-c70844f20c6c17ea.rmeta --extern dotenv=/opt/rustwide/target/debug/deps/libdotenv-c76132b7e0be9ccd.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-e3906eeed0bc1418.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-9ad4b1dd96f3dcd2.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-c153d7e973a3bd06.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-96c1ea82010db8ba.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-4c0b3a18232bca35.rmeta --extern log_panics=/opt/rustwide/target/debug/deps/liblog_panics-4f09a99a5029119e.rmeta --extern magic=/opt/rustwide/target/debug/deps/libmagic-d5bc2c7878bf7afb.rmeta --extern mime=/opt/rustwide/target/debug/deps/libmime-4c3f069f3f1cc8ac.rmeta --extern mime_guess=/opt/rustwide/target/debug/deps/libmime_guess-aec58cadea9cc911.rmeta --extern multipart=/opt/rustwide/target/debug/deps/libmultipart-3932619bd2dfd22c.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-0851198a5db5a571.rmeta --extern ring=/opt/rustwide/target/debug/deps/libring-d70a1ed7476333c6.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-38666ece1221f13b.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-497a4b5ad252d800.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9eb59a61795a4c9674d0e28c68ded08e58bcedc3510054b6d05bffa1a77bd2d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eb59a61795a4c9674d0e28c68ded08e58bcedc3510054b6d05bffa1a77bd2d3", kill_on_drop: false }`
[INFO] [stdout] 9eb59a61795a4c9674d0e28c68ded08e58bcedc3510054b6d05bffa1a77bd2d3