[INFO] fetching crate fltk 0.8.2...
[INFO] documenting fltk-0.8.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate fltk 0.8.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate fltk 0.8.2 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fltk 0.8.2
[INFO] finished tweaking crates.io crate fltk 0.8.2
[INFO] tweaked toml for crates.io crate fltk 0.8.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate fltk 0.8.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fltk-derive v0.8.2
[INFO] [stderr]   Downloaded fltk-sys v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "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] 3ec0d29cb6d94814af5cf432148d3a5e766014b515d2950c2dc95a6500538949
[INFO] running `Command { std: "docker" "start" "-a" "3ec0d29cb6d94814af5cf432148d3a5e766014b515d2950c2dc95a6500538949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ec0d29cb6d94814af5cf432148d3a5e766014b515d2950c2dc95a6500538949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec0d29cb6d94814af5cf432148d3a5e766014b515d2950c2dc95a6500538949", kill_on_drop: false }`
[INFO] [stdout] 3ec0d29cb6d94814af5cf432148d3a5e766014b515d2950c2dc95a6500538949
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aed8c0e2ebd44f88e92bf2a62f56d4a196577c47f9634fe723412a8b54ae139b
[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" "aed8c0e2ebd44f88e92bf2a62f56d4a196577c47f9634fe723412a8b54ae139b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling fltk-sys v0.8.2
[INFO] [stderr]    Compiling fltk-derive v0.8.2
[INFO] [stderr]  Documenting fltk v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 45 | | //! You can also enable ninja builds for a faster build of the C++ source using the "use-ninja" feature. Or if you have fltk already inst...
[INFO] [stdout] 46 | | //!
[INFO] [stdout] 47 | | //! To use the master branch in your project, you can use:
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | | //! fltk = { git = "https://github.com/MoAlyousef/fltk-rs" }
[INFO] [stdout] 51 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: error from rustc: unknown start of token: `
[INFO] [stdout]    = note: error from rustc: unknown start of token: `
[INFO] [stdout]    = note: error from rustc: unknown start of token: `
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 44 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "aed8c0e2ebd44f88e92bf2a62f56d4a196577c47f9634fe723412a8b54ae139b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed8c0e2ebd44f88e92bf2a62f56d4a196577c47f9634fe723412a8b54ae139b", kill_on_drop: false }`
[INFO] [stdout] aed8c0e2ebd44f88e92bf2a62f56d4a196577c47f9634fe723412a8b54ae139b