[INFO] fetching crate range-encoding 0.2.1...
[INFO] linting range-encoding-0.2.1 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate range-encoding 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate range-encoding 0.2.1
[INFO] finished tweaking crates.io crate range-encoding 0.2.1
[INFO] tweaked toml for crates.io crate range-encoding 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate range-encoding 0.2.1 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.5.13 (available: v0.11.9)
[INFO] [stderr]       Adding rand v0.5.6 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab97c94324ed0469bb59332a3a1b9b0f1518f2d51b593c2ec8e49421e93fa0cd
[INFO] running `Command { std: "docker" "start" "-a" "ab97c94324ed0469bb59332a3a1b9b0f1518f2d51b593c2ec8e49421e93fa0cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab97c94324ed0469bb59332a3a1b9b0f1518f2d51b593c2ec8e49421e93fa0cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab97c94324ed0469bb59332a3a1b9b0f1518f2d51b593c2ec8e49421e93fa0cd", kill_on_drop: false }`
[INFO] [stdout] ab97c94324ed0469bb59332a3a1b9b0f1518f2d51b593c2ec8e49421e93fa0cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87a707289689b7440a77deadfc74fb099e633901f36a61523ba6375f6e0869a9
[INFO] running `Command { std: "docker" "start" "-a" "87a707289689b7440a77deadfc74fb099e633901f36a61523ba6375f6e0869a9", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking range-encoding v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:49:20
[INFO] [stdout]    |
[INFO] [stdout] 49 |     (*_this).rng = 1u32 << (32i32 - 2i32) % 8i32 + 1i32;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << ((32i32 - 2i32) % 8i32 + 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout]    = note: `#[warn(clippy::precedence)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:55:14
[INFO] [stdout]    |
[INFO] [stdout] 55 |             ((*_this).rem >> 8i32 - ((32i32 - 2i32) % 8i32 + 1i32)) as std::os::raw::c_uint,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(*_this).rem >> (8i32 - ((32i32 - 2i32) % 8i32 + 1i32))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |     while (*_this).rng <= 1u32 << 32i32 - 1i32 >> 8i32 {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 68 |         sym = (sym << 8i32 | (*_this).rem) >> 8i32 - ((32i32 - 2i32) % 8i32 + 1i32);
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(sym << 8i32 | (*_this).rem) >> (8i32 - ((32i32 - 2i32) % 8i32 + 1i32))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |         ) & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint)
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 85 |     while (*_this).rng <= 1u32 << 32i32 - 1i32 >> 8i32 {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 |             ((*_this).val >> 32i32 - 8i32 - 1i32) as std::os::raw::c_int,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(*_this).val >> (32i32 - 8i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |             & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint);
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:280:20
[INFO] [stdout]     |
[INFO] [stdout] 280 |     let mut msk = (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint) >> l;
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:288:34
[INFO] [stdout]     |
[INFO] [stdout] 288 |         ec_enc_carry_out(_this, (end >> 32i32 - 8i32 - 1i32) as std::os::raw::c_int)?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `end >> (32i32 - 8i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |         end = end << 8i32 & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint);
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_decode.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     return n.wrapping_div(d);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -     return n.wrapping_div(d);
[INFO] [stdout] 37 +     n.wrapping_div(d)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_decode.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     return n / d;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     return n / d;
[INFO] [stdout] 40 +     n / d
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_decode.rs:98:5
[INFO] [stdout]     |
[INFO] [stdout]  98 | /     return _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint).wrapping_add(
[INFO] [stdout]  99 | |         _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint))
[INFO] [stdout] 100 | |             & -((_ft < s.wrapping_add(1i32 as std::os::raw::c_uint)) as std::os::raw::c_int)
[INFO] [stdout] 101 | |                 as std::os::raw::c_uint,
[INFO] [stdout] 102 | |     ));
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout]  98 ~     _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint).wrapping_add(
[INFO] [stdout]  99 +         _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint))
[INFO] [stdout] 100 +             & -((_ft < s.wrapping_add(1i32 as std::os::raw::c_uint)) as std::os::raw::c_int)
[INFO] [stdout] 101 +                 as std::os::raw::c_uint,
[INFO] [stdout] 102 ~     ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_decode.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 | /     return (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32).wrapping_add(
[INFO] [stdout] 112 | |         (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32))
[INFO] [stdout] 113 | |             & -((1u32 << _bits < s.wrapping_add(1u32)) as std::os::raw::c_int)
[INFO] [stdout] 114 | |                 as std::os::raw::c_uint,
[INFO] [stdout] 115 | |     ));
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 111 ~     (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32).wrapping_add(
[INFO] [stdout] 112 +         (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32))
[INFO] [stdout] 113 +             & -((1u32 << _bits < s.wrapping_add(1u32)) as std::os::raw::c_int)
[INFO] [stdout] 114 +                 as std::os::raw::c_uint,
[INFO] [stdout] 115 ~     ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_decode.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if !(d < s) {
[INFO] [stdout]     |            ^^^^^^^^ help: try: `(d >= s)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_encode.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     return n.wrapping_div(d);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -     return n.wrapping_div(d);
[INFO] [stdout] 59 +     n.wrapping_div(d)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_encode.rs:114:20
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 if !((*_this).ext > 0i32 as std::os::raw::c_uint) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `((*_this).ext <= 0i32 as std::os::raw::c_uint)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_encode.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     return Ok(());
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 230 -     return Ok(());
[INFO] [stdout] 230 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_encode.rs:252:16
[INFO] [stdout]     |
[INFO] [stdout] 252 |             if !(used >= 8i32) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^ help: try: `(used < 8i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_encode.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     return Ok(());
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 264 -     return Ok(());
[INFO] [stdout] 264 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of a legacy numeric constant
[INFO] [stdout]   --> src/opus/encode.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 rng: std::u32::MAX / 2 + 1,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]    = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] help: use the associated constant instead
[INFO] [stdout]    |
[INFO] [stdout] 21 -                 rng: std::u32::MAX / 2 + 1,
[INFO] [stdout] 21 +                 rng: u32::MAX / 2 + 1,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/lib.rs:93:21
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn at_index<'a>(&'a self, index: usize) -> Option<&'a Segment> {
[INFO] [stdout]    |                     ^^   ^^                                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 93 -     pub fn at_index<'a>(&'a self, index: usize) -> Option<&'a Segment> {
[INFO] [stdout] 93 +     pub fn at_index(&self, index: usize) -> Option<&Segment> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CumulativeDistributionFrequency` has a public `len` method, but no `is_empty` method
[INFO] [stdout]    --> src/lib.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]     = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 45 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<u8, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:78:6
[INFO] [stdout]    |
[INFO] [stdout] 78 | ) -> Result<u8, std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:123:6
[INFO] [stdout]     |
[INFO] [stdout] 123 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<i32, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:139:6
[INFO] [stdout]     |
[INFO] [stdout] 139 | ) -> Result<i32, std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<i32, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:156:6
[INFO] [stdout]     |
[INFO] [stdout] 156 | ) -> Result<i32, std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stdout] warning: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
[INFO] [stdout]   --> tests/simple.rs:11:68
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let probabilities = CumulativeDistributionFrequency::new(widths.iter().cloned().collect());
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_cloned_collect
[INFO] [stdout]    = note: `#[warn(clippy::iter_cloned_collect)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:49:20
[INFO] [stdout]    |
[INFO] [stdout] 49 |     (*_this).rng = 1u32 << (32i32 - 2i32) % 8i32 + 1i32;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << ((32i32 - 2i32) % 8i32 + 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout]    = note: `#[warn(clippy::precedence)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:55:14
[INFO] [stdout]    |
[INFO] [stdout] 55 |             ((*_this).rem >> 8i32 - ((32i32 - 2i32) % 8i32 + 1i32)) as std::os::raw::c_uint,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(*_this).rem >> (8i32 - ((32i32 - 2i32) % 8i32 + 1i32))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:63:27
[INFO] [stdout]    |
[INFO] [stdout] 63 |     while (*_this).rng <= 1u32 << 32i32 - 1i32 >> 8i32 {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 68 |         sym = (sym << 8i32 | (*_this).rem) >> 8i32 - ((32i32 - 2i32) % 8i32 + 1i32);
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(sym << 8i32 | (*_this).rem) >> (8i32 - ((32i32 - 2i32) % 8i32 + 1i32))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_decode.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 72 |         ) & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint)
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 85 |     while (*_this).rng <= 1u32 << 32i32 - 1i32 >> 8i32 {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 |             ((*_this).val >> 32i32 - 8i32 - 1i32) as std::os::raw::c_int,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `(*_this).val >> (32i32 - 8i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the method `symbol` doesn't need a mutable reference
[INFO] [stdout]   --> tests/simple.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 .symbol(index, &mut probabilities)
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_mut_passed)]` on by default
[INFO] [stdout] help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout] 29 -                 .symbol(index, &mut probabilities)
[INFO] [stdout] 29 +                 .symbol(index, &probabilities)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the method `symbol` doesn't need a mutable reference
[INFO] [stdout]   --> tests/simple.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 .symbol(&mut probabilities)
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
[INFO] [stdout] help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout] 40 -                 .symbol(&mut probabilities)
[INFO] [stdout] 40 +                 .symbol(&probabilities)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]   --> src/opus/imported_encode.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |             & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint);
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:280:20
[INFO] [stdout]     |
[INFO] [stdout] 280 |     let mut msk = (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint) >> l;
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:288:34
[INFO] [stdout]     |
[INFO] [stdout] 288 |         ec_enc_carry_out(_this, (end >> 32i32 - 8i32 - 1i32) as std::os::raw::c_int)?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `end >> (32i32 - 8i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: operator precedence might not be obvious
[INFO] [stdout]    --> src/opus/imported_encode.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |         end = end << 8i32 & (1u32 << 32i32 - 1i32).wrapping_sub(1i32 as std::os::raw::c_uint);
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^ help: consider parenthesizing your expression: `1u32 << (32i32 - 1i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#precedence
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_decode.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     return n.wrapping_div(d);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -     return n.wrapping_div(d);
[INFO] [stdout] 37 +     n.wrapping_div(d)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_decode.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     return n / d;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     return n / d;
[INFO] [stdout] 40 +     n / d
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_decode.rs:98:5
[INFO] [stdout]     |
[INFO] [stdout]  98 | /     return _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint).wrapping_add(
[INFO] [stdout]  99 | |         _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint))
[INFO] [stdout] 100 | |             & -((_ft < s.wrapping_add(1i32 as std::os::raw::c_uint)) as std::os::raw::c_int)
[INFO] [stdout] 101 | |                 as std::os::raw::c_uint,
[INFO] [stdout] 102 | |     ));
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout]  98 ~     _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint).wrapping_add(
[INFO] [stdout]  99 +         _ft.wrapping_sub(s.wrapping_add(1i32 as std::os::raw::c_uint))
[INFO] [stdout] 100 +             & -((_ft < s.wrapping_add(1i32 as std::os::raw::c_uint)) as std::os::raw::c_int)
[INFO] [stdout] 101 +                 as std::os::raw::c_uint,
[INFO] [stdout] 102 ~     ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_decode.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 | /     return (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32).wrapping_add(
[INFO] [stdout] 112 | |         (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32))
[INFO] [stdout] 113 | |             & -((1u32 << _bits < s.wrapping_add(1u32)) as std::os::raw::c_int)
[INFO] [stdout] 114 | |                 as std::os::raw::c_uint,
[INFO] [stdout] 115 | |     ));
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 111 ~     (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32).wrapping_add(
[INFO] [stdout] 112 +         (1u32 << _bits).wrapping_sub(s.wrapping_add(1u32))
[INFO] [stdout] 113 +             & -((1u32 << _bits < s.wrapping_add(1u32)) as std::os::raw::c_int)
[INFO] [stdout] 114 +                 as std::os::raw::c_uint,
[INFO] [stdout] 115 ~     ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_decode.rs:166:12
[INFO] [stdout]     |
[INFO] [stdout] 166 |         if !(d < s) {
[INFO] [stdout]     |            ^^^^^^^^ help: try: `(d >= s)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/opus/imported_encode.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     return n.wrapping_div(d);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -     return n.wrapping_div(d);
[INFO] [stdout] 59 +     n.wrapping_div(d)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_encode.rs:114:20
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 if !((*_this).ext > 0i32 as std::os::raw::c_uint) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `((*_this).ext <= 0i32 as std::os::raw::c_uint)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_encode.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     return Ok(());
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 230 -     return Ok(());
[INFO] [stdout] 230 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/opus/imported_encode.rs:252:16
[INFO] [stdout]     |
[INFO] [stdout] 252 |             if !(used >= 8i32) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^ help: try: `(used < 8i32)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/opus/imported_encode.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     return Ok(());
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 264 -     return Ok(());
[INFO] [stdout] 264 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of a legacy numeric constant
[INFO] [stdout]   --> src/opus/encode.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 rng: std::u32::MAX / 2 + 1,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]    = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] help: use the associated constant instead
[INFO] [stdout]    |
[INFO] [stdout] 21 -                 rng: std::u32::MAX / 2 + 1,
[INFO] [stdout] 21 +                 rng: u32::MAX / 2 + 1,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/lib.rs:93:21
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn at_index<'a>(&'a self, index: usize) -> Option<&'a Segment> {
[INFO] [stdout]    |                     ^^   ^^                                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 93 -     pub fn at_index<'a>(&'a self, index: usize) -> Option<&'a Segment> {
[INFO] [stdout] 93 +     pub fn at_index(&self, index: usize) -> Option<&Segment> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CumulativeDistributionFrequency` has a public `len` method, but no `is_empty` method
[INFO] [stdout]    --> src/lib.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stdout]     = note: `#[warn(clippy::len_without_is_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 45 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<u8, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]   --> src/opus/imported_decode.rs:78:6
[INFO] [stdout]    |
[INFO] [stdout] 78 | ) -> Result<u8, std::io::Error> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]    = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<(), std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:123:6
[INFO] [stdout]     |
[INFO] [stdout] 123 | ) -> Result<(), std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<i32, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:139:6
[INFO] [stdout]     |
[INFO] [stdout] 139 | ) -> Result<i32, std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `std::result::Result<i32, std::io::Error>`, which is not FFI-safe
[INFO] [stdout]    --> src/opus/imported_decode.rs:156:6
[INFO] [stdout]     |
[INFO] [stdout] 156 | ) -> Result<i32, std::io::Error> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
[INFO] [stdout]     = note: enum has no representation hint
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `Command { std: "docker" "inspect" "87a707289689b7440a77deadfc74fb099e633901f36a61523ba6375f6e0869a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a707289689b7440a77deadfc74fb099e633901f36a61523ba6375f6e0869a9", kill_on_drop: false }`
[INFO] [stdout] 87a707289689b7440a77deadfc74fb099e633901f36a61523ba6375f6e0869a9