[INFO] cloning repository https://github.com/axieinfinity/mav
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/axieinfinity/mav" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fbaf9241c8d037c9b92dc59004b9a39b740b64c
[INFO] documenting axieinfinity/mav 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%2Faxieinfinity%2Fmav" "/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/axieinfinity/mav 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/axieinfinity/mav
[INFO] finished tweaking git repo https://github.com/axieinfinity/mav
[INFO] tweaked toml for git repo https://github.com/axieinfinity/mav written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/axieinfinity/mav 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-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] 7ec46bf93315b223d9098501d74ab7ab83650555c7e229c057c9a564761448fe
[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" "7ec46bf93315b223d9098501d74ab7ab83650555c7e229c057c9a564761448fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ec46bf93315b223d9098501d74ab7ab83650555c7e229c057c9a564761448fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec46bf93315b223d9098501d74ab7ab83650555c7e229c057c9a564761448fe", kill_on_drop: false }`
[INFO] [stdout] 7ec46bf93315b223d9098501d74ab7ab83650555c7e229c057c9a564761448fe
[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] [stdout] 0883b50705337d22cab1cc44d45a42c02d57794834a62e69d9830a6cf450826c
[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" "0883b50705337d22cab1cc44d45a42c02d57794834a62e69d9830a6cf450826c", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking nix v0.13.1
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking clap-nested v0.1.1
[INFO] [stderr]     Checking cgmath v0.16.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking console v0.8.0
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking shared_child v0.3.3
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.4
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking dialoguer v0.4.0
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking os_pipe v0.8.1
[INFO] [stderr]     Checking duct v0.12.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]  Documenting mav 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 `mav`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name mav 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 clap=/opt/rustwide/target/debug/deps/libclap-b1a5d26adf9c38b3.rmeta --extern clap_nested=/opt/rustwide/target/debug/deps/libclap_nested-6f0df836243c60b3.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-7f64677a7816d763.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-a657630edbbe5bc2.rmeta --extern duct=/opt/rustwide/target/debug/deps/libduct-9cea5eb247274b76.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-62fa8b296580fdf2.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-265a9fb0c8bc11ea.rmeta --extern os_pipe=/opt/rustwide/target/debug/deps/libos_pipe-f22b0ddde31160a5.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-5dd6f6bae3c2ed36.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-74b6b3190f557c9a.rmeta --extern which=/opt/rustwide/target/debug/deps/libwhich-8681287be525fe45.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "0883b50705337d22cab1cc44d45a42c02d57794834a62e69d9830a6cf450826c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0883b50705337d22cab1cc44d45a42c02d57794834a62e69d9830a6cf450826c", kill_on_drop: false }`
[INFO] [stdout] 0883b50705337d22cab1cc44d45a42c02d57794834a62e69d9830a6cf450826c