[INFO] fetching crate linux-support-common 0.0.0...
[INFO] documenting linux-support-common-0.0.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate linux-support-common 0.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate linux-support-common 0.0.0 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 crates.io crate linux-support-common 0.0.0
[INFO] finished tweaking crates.io crate linux-support-common 0.0.0
[INFO] tweaked toml for crates.io crate linux-support-common 0.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb6913da9494b6ad879c451d8d411ece44e6814d1a12debd4e5a322413130cab
[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" "bb6913da9494b6ad879c451d8d411ece44e6814d1a12debd4e5a322413130cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb6913da9494b6ad879c451d8d411ece44e6814d1a12debd4e5a322413130cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6913da9494b6ad879c451d8d411ece44e6814d1a12debd4e5a322413130cab", kill_on_drop: false }`
[INFO] [stdout] bb6913da9494b6ad879c451d8d411ece44e6814d1a12debd4e5a322413130cab
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3829dbb828a1b4f8283a85208cc791702b0b4668f102c3aa6b0d9dc373bc7710
[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" "3829dbb828a1b4f8283a85208cc791702b0b4668f102c3aa6b0d9dc373bc7710", kill_on_drop: false }`
[INFO] [stderr]     Checking likely v0.1.0
[INFO] [stderr]     Checking strum v0.16.0
[INFO] [stderr]    Compiling raw-cpuid v5.0.0
[INFO] [stderr]     Checking const-cstr-fork v0.2.2
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]     Checking libc-extra v0.3.2
[INFO] [stderr]  Documenting linux-support-common v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(core_intrinsics)]
[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 `linux-support-common`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name linux_support_common src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-bb6ec8f28ecded21.rmeta --extern errno=/opt/rustwide/target/debug/deps/liberrno-45ecd7f988de7f93.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-0d4e59a692e831a5.rmeta --extern libc_extra=/opt/rustwide/target/debug/deps/liblibc_extra-e80ba948a40963de.rmeta --extern likely=/opt/rustwide/target/debug/deps/liblikely-4e8c38200a2e845b.rmeta --extern raw_cpuid=/opt/rustwide/target/debug/deps/libraw_cpuid-a492ec388f0b7c6a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ce360c6747a68ca1.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-cb959170b4570325.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-0fa931e8149124bc.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-e994aff8d96d51cd.so --cap-lints=warn --crate-version 0.0.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3829dbb828a1b4f8283a85208cc791702b0b4668f102c3aa6b0d9dc373bc7710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3829dbb828a1b4f8283a85208cc791702b0b4668f102c3aa6b0d9dc373bc7710", kill_on_drop: false }`
[INFO] [stdout] 3829dbb828a1b4f8283a85208cc791702b0b4668f102c3aa6b0d9dc373bc7710
