[INFO] fetching crate spinlocks 0.0.1...
[INFO] documenting spinlocks-0.0.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate spinlocks 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate spinlocks 0.0.1 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 spinlocks 0.0.1
[INFO] finished tweaking crates.io crate spinlocks 0.0.1
[INFO] tweaked toml for crates.io crate spinlocks 0.0.1 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] b996b1df210264e3ff18bba412b3b74465f6ffa96b8237620897ac6ffe5561be
[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" "b996b1df210264e3ff18bba412b3b74465f6ffa96b8237620897ac6ffe5561be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b996b1df210264e3ff18bba412b3b74465f6ffa96b8237620897ac6ffe5561be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b996b1df210264e3ff18bba412b3b74465f6ffa96b8237620897ac6ffe5561be", kill_on_drop: false }`
[INFO] [stdout] b996b1df210264e3ff18bba412b3b74465f6ffa96b8237620897ac6ffe5561be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 6a7083de900c57cca098448288e516be5fd10e60aea2576fd9ea0143a3d83080
[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" "6a7083de900c57cca098448288e516be5fd10e60aea2576fd9ea0143a3d83080", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.2
[INFO] [stderr]    Compiling standback v0.2.11
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]  Documenting spinlocks v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find attribute `unsafe_destructor` in this scope
[INFO] [stdout]    --> src/lib.rs:390:3
[INFO] [stdout]     |
[INFO] [stdout] 390 | #[unsafe_destructor]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `unsafe_destructor` in this scope
[INFO] [stdout]    --> src/lib.rs:429:3
[INFO] [stdout]     |
[INFO] [stdout] 429 | #[unsafe_destructor]
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | #![feature(optin_builtin_traits)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(unsafe_destructor)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | #![feature(core)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(std_misc)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:371:13
[INFO] [stdout]     |
[INFO] [stdout] 371 | impl<'a, T> !Send for SpinLockReadGuard<'a, T> {}
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]    --> src/lib.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 | impl<'a, T> !Send for SpinLockWriteGuard<'a, T> {}
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `spinlocks`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name spinlocks 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 time=/opt/rustwide/target/debug/deps/libtime-7f1a864387637620.rmeta --cap-lints=warn --crate-version 0.0.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "6a7083de900c57cca098448288e516be5fd10e60aea2576fd9ea0143a3d83080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a7083de900c57cca098448288e516be5fd10e60aea2576fd9ea0143a3d83080", kill_on_drop: false }`
[INFO] [stdout] 6a7083de900c57cca098448288e516be5fd10e60aea2576fd9ea0143a3d83080
