[INFO] cloning repository https://github.com/williamsandrew/bobomb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/williamsandrew/bobomb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamsandrew%2Fbobomb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamsandrew%2Fbobomb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd610d5003ec4e56720accece3eabf4757b13e8a
[INFO] documenting williamsandrew/bobomb against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamsandrew%2Fbobomb" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williamsandrew/bobomb on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/williamsandrew/bobomb
[INFO] finished tweaking git repo https://github.com/williamsandrew/bobomb
[INFO] tweaked toml for git repo https://github.com/williamsandrew/bobomb written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/williamsandrew/bobomb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded net2 v0.2.26
[INFO] [stderr]   Downloaded owning_ref v0.2.4
[INFO] [stderr]   Downloaded error-chain v0.7.2
[INFO] [stderr]   Downloaded tokio-core v0.1.3
[INFO] [stderr]   Downloaded native-tls v0.1.1
[INFO] [stderr]   Downloaded futures v0.1.9
[INFO] [stderr]   Downloaded futures-cpupool v0.1.2
[INFO] [stderr]   Downloaded security-framework-sys v0.1.10
[INFO] [stderr]   Downloaded lazycell v0.4.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.6
[INFO] [stderr]   Downloaded openssl v0.9.6
[INFO] [stderr]   Downloaded security-framework v0.1.10
[INFO] [stderr]   Downloaded hpack v0.3.0
[INFO] [stderr]   Downloaded metadeps v1.1.1
[INFO] [stderr]   Downloaded mio v0.6.2
[INFO] [stderr]   Downloaded httpbis v0.1.1
[INFO] [stderr]   Downloaded parking_lot_core v0.2.0
[INFO] [stderr]   Downloaded schannel v0.1.2
[INFO] [stderr]   Downloaded tokio-tls v0.1.0
[INFO] [stderr]   Downloaded grpc v0.1.1
[INFO] [stderr]   Downloaded parking_lot v0.3.6
[INFO] [stderr]   Downloaded protobuf v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5451965227d349aa5725fb460388e7a2541487cfa7f4cd3efcb6bdf2376c38f7
[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" "5451965227d349aa5725fb460388e7a2541487cfa7f4cd3efcb6bdf2376c38f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5451965227d349aa5725fb460388e7a2541487cfa7f4cd3efcb6bdf2376c38f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5451965227d349aa5725fb460388e7a2541487cfa7f4cd3efcb6bdf2376c38f7", kill_on_drop: false }`
[INFO] [stdout] 5451965227d349aa5725fb460388e7a2541487cfa7f4cd3efcb6bdf2376c38f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "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] 9675558e4fad7d44893796f7a83f372a55d3ca9a4ed85a258a625e860e9ad62f
[INFO] running `Command { std: "docker" "start" "-a" "9675558e4fad7d44893796f7a83f372a55d3ca9a4ed85a258a625e860e9ad62f", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking smallvec v0.1.8
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking protobuf v1.1.0
[INFO] [stderr]    Compiling probe v0.1.6 (https://github.com/cuviper/rust-libprobe.git#98b71d8f)
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking futures v0.1.9
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/rust-libprobe-428800595a569dcb/98b71d8/src/lib.rs:99:1
[INFO] [stdout]    |
[INFO] [stdout] 99 | #![feature(asm)]
[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 `probe`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9675558e4fad7d44893796f7a83f372a55d3ca9a4ed85a258a625e860e9ad62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9675558e4fad7d44893796f7a83f372a55d3ca9a4ed85a258a625e860e9ad62f", kill_on_drop: false }`
[INFO] [stdout] 9675558e4fad7d44893796f7a83f372a55d3ca9a4ed85a258a625e860e9ad62f
