[INFO] fetching crate monad_macros 0.0.1...
[INFO] documenting monad_macros-0.0.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate monad_macros 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate monad_macros 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 monad_macros 0.0.1
[INFO] finished tweaking crates.io crate monad_macros 0.0.1
[INFO] tweaked toml for crates.io crate monad_macros 0.0.1 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 583f21e24bf12909ef0e90830c42af12b39c549df1867f0b64e56625bfbc3ad6
[INFO] running `Command { std: "docker" "start" "-a" "583f21e24bf12909ef0e90830c42af12b39c549df1867f0b64e56625bfbc3ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "583f21e24bf12909ef0e90830c42af12b39c549df1867f0b64e56625bfbc3ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "583f21e24bf12909ef0e90830c42af12b39c549df1867f0b64e56625bfbc3ad6", kill_on_drop: false }`
[INFO] [stdout] 583f21e24bf12909ef0e90830c42af12b39c549df1867f0b64e56625bfbc3ad6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 469bab08da457fe8688001102c9b1dd3c1f8fb7e6531f3483e09cc4b091400fa
[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" "469bab08da457fe8688001102c9b1dd3c1f8fb7e6531f3483e09cc4b091400fa", kill_on_drop: false }`
[INFO] [stderr]  Documenting monad_macros v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `$p:pat` is followed by `:`, which is not allowed for `pat` fragments
[INFO] [stdout]   --> src/lib.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         $p: pat : $ty: ty <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                 ^ not allowed after `pat` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `$ty:ty` is followed by `<-`, which is not allowed for `ty` fragments
[INFO] [stdout]   --> src/lib.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |         $p: pat : $ty: ty <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                           ^^ not allowed after `ty` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `$p:pat` is followed by `<-`, which is not allowed for `pat` fragments
[INFO] [stdout]   --> src/lib.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |         $p: pat <- $e: expr ; $( $t: tt )*
[INFO] [stdout]    |                 ^^ not allowed after `pat` fragments
[INFO] [stdout]    |
[INFO] [stdout]    = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_rules)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 `monad_macros`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name monad_macros 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 --cap-lints=warn --crate-version 0.0.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "469bab08da457fe8688001102c9b1dd3c1f8fb7e6531f3483e09cc4b091400fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469bab08da457fe8688001102c9b1dd3c1f8fb7e6531f3483e09cc4b091400fa", kill_on_drop: false }`
[INFO] [stdout] 469bab08da457fe8688001102c9b1dd3c1f8fb7e6531f3483e09cc4b091400fa
