[INFO] cloning repository https://github.com/kbingman/tidal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kbingman/tidal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbingman%2Ftidal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbingman%2Ftidal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e93e903b0b3dbeb658a0cb080b1221cdeea3988d
[INFO] documenting kbingman/tidal against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbingman%2Ftidal" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kbingman/tidal on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kbingman/tidal
[INFO] finished tweaking git repo https://github.com/kbingman/tidal
[INFO] tweaked toml for git repo https://github.com/kbingman/tidal written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kbingman/tidal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http-service-hyper v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cc0251735b71b164e3bdf2ddc8cff7034152fe0626438969e9ed7378593be18
[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" "5cc0251735b71b164e3bdf2ddc8cff7034152fe0626438969e9ed7378593be18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cc0251735b71b164e3bdf2ddc8cff7034152fe0626438969e9ed7378593be18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cc0251735b71b164e3bdf2ddc8cff7034152fe0626438969e9ed7378593be18", kill_on_drop: false }`
[INFO] [stdout] 5cc0251735b71b164e3bdf2ddc8cff7034152fe0626438969e9ed7378593be18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1532cbdf5aeb3ba62a89c95ed552f24f2f64ab59569fcb37a59cf2d750c0ccb4
[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" "1532cbdf5aeb3ba62a89c95ed552f24f2f64ab59569fcb37a59cf2d750c0ccb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling hyper v0.12.34
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]    Compiling juniper_codegen v0.13.2
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.18
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking http-service v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking indexmap v1.2.0
[INFO] [stderr]     Checking serde_qs v0.5.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking juniper v0.13.1
[INFO] [stderr]     Checking tide-core v0.2.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-cors v0.2.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-querystring v0.1.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-headers v0.1.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-cookies v0.2.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-forms v0.1.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking tide-log v0.1.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]     Checking http-service-hyper v0.3.1
[INFO] [stderr]     Checking tide v0.2.0 (https://github.com/rustasync/tide.git#af0b900b)
[INFO] [stderr]  Documenting tidal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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 `tidal`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name tidal 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 http=/opt/rustwide/target/debug/deps/libhttp-57fce63ad4d90ffd.rmeta --extern juniper=/opt/rustwide/target/debug/deps/libjuniper-9c394fc948f3e64f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b1c6798b52018fe2.rmeta --extern tide=/opt/rustwide/target/debug/deps/libtide-c393c288b7da1116.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "1532cbdf5aeb3ba62a89c95ed552f24f2f64ab59569fcb37a59cf2d750c0ccb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1532cbdf5aeb3ba62a89c95ed552f24f2f64ab59569fcb37a59cf2d750c0ccb4", kill_on_drop: false }`
[INFO] [stdout] 1532cbdf5aeb3ba62a89c95ed552f24f2f64ab59569fcb37a59cf2d750c0ccb4
