[INFO] fetching crate fluidsynth 0.0.1...
[INFO] documenting fluidsynth-0.0.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate fluidsynth 0.0.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fluidsynth 0.0.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fluidsynth 0.0.1
[INFO] finished tweaking crates.io crate fluidsynth 0.0.1
[INFO] tweaked toml for crates.io crate fluidsynth 0.0.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b06de965822b3505333c5b0d0eac7626ed24536bf4a798a8915cae770b14e52a
[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" "b06de965822b3505333c5b0d0eac7626ed24536bf4a798a8915cae770b14e52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b06de965822b3505333c5b0d0eac7626ed24536bf4a798a8915cae770b14e52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b06de965822b3505333c5b0d0eac7626ed24536bf4a798a8915cae770b14e52a", kill_on_drop: false }`
[INFO] [stdout] b06de965822b3505333c5b0d0eac7626ed24536bf4a798a8915cae770b14e52a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80e953cae6b15f977a24fe0f073634f64c6842a446333cb605a511a4b119f800
[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" "80e953cae6b15f977a24fe0f073634f64c6842a446333cb605a511a4b119f800", kill_on_drop: false }`
[INFO] [stderr]  Documenting fluidsynth v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/settings.rs:227:54
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn option_count(&self, name: &str) -> Option<(i32)> {
[INFO] [stdout]     |                                                      ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/settings.rs:239:72
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn option_concat(&self, name: &str, separator: &str) -> Option<(&str)> {
[INFO] [stdout]     |                                                                        ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `fourthOrder` should have an upper camel case name
[INFO] [stdout]   --> src/synth.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fourthOrder = 4,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `FourthOrder`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `seventhOrder` should have an upper camel case name
[INFO] [stdout]   --> src/synth.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     seventhOrder = 7
[INFO] [stdout]    |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `SeventhOrder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `fn(*mut libc::c_void, *mut ffi::Struct__fluid_midi_event_t) -> i32`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:815:44
[INFO] [stdout]     |
[INFO] [stdout] 815 | ...                   callback: fn (closure: *mut ::libc::c_void, event: *mut fluid_midi_event_t) -> i32,
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider using an `extern fn(...) -> ...` function pointer instead
[INFO] [stdout]     = note: this function pointer has Rust-specific calling convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `fn(*mut libc::c_void, *mut ffi::Struct__fluid_midi_event_t) -> i32`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:859:43
[INFO] [stdout]     |
[INFO] [stdout] 859 | ...                   handler: fn (closure: *mut ::libc::c_void, event: *mut fluid_midi_event_t) -> i32,
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using an `extern fn(...) -> ...` function pointer instead
[INFO] [stdout]     = note: this function pointer has Rust-specific calling convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `fn(*mut libc::c_void, u32, *mut ffi::Struct__fluid_event_t, *mut ffi::Struct__fluid_sequencer_t)`, which is not FFI-safe
[INFO] [stdout]    --> src/ffi.rs:895:54
[INFO] [stdout]     |
[INFO] [stdout] 895 | ...ack: fn (closure: *mut ::libc::c_void, time: ::libc::c_uint, event: *mut fluid_event_t, seq: *mut fluid_sequencer_t),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using an `extern fn(...) -> ...` function pointer instead
[INFO] [stdout]     = note: this function pointer has Rust-specific calling convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "80e953cae6b15f977a24fe0f073634f64c6842a446333cb605a511a4b119f800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e953cae6b15f977a24fe0f073634f64c6842a446333cb605a511a4b119f800", kill_on_drop: false }`
[INFO] [stdout] 80e953cae6b15f977a24fe0f073634f64c6842a446333cb605a511a4b119f800