[INFO] fetching crate wblp 0.1.6...
[INFO] testing wblp-0.1.6 against 1.95.0 for beta-1.96-2
[INFO] extracting crate wblp 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate wblp 0.1.6
[INFO] finished tweaking crates.io crate wblp 0.1.6
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[INFO] validating manifest of crates.io crate wblp 0.1.6 on toolchain 1.95.0
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[INFO] crate crates.io crate wblp 0.1.6 already has a lockfile, it will not be regenerated
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[INFO] [stderr]    Compiling wblp v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `BLPDecoder::mipmap_count`: use metadata() instead
[INFO] [stdout]    --> src/lib.rs:131:27
[INFO] [stdout]     |
[INFO] [stdout] 131 |             mipmaps: self.mipmap_count()?,
[INFO] [stdout]     |                           ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_blp_all_mipmaps` is never used
[INFO] [stdout]    --> src/lib.rs:370:4
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn decode_blp_all_mipmaps(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mip` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Mip {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ctx` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct Ctx {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_cmyk_fast` is never used
[INFO] [stdout]   --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn pack_rgba_to_cmyk_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_cmyk_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 15s
[INFO] running `Command { std: "docker" "inspect" "ef2010c04aa511a9c47e077ea87bb94737c74a5f3b5ef1b0f82f909658e9ec5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2010c04aa511a9c47e077ea87bb94737c74a5f3b5ef1b0f82f909658e9ec5d", kill_on_drop: false }`
[INFO] [stdout] ef2010c04aa511a9c47e077ea87bb94737c74a5f3b5ef1b0f82f909658e9ec5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6355b0e813847ac985a46ba33646fca0ee11ac90f1549e6d65728cb20f4858ac
[INFO] running `Command { std: "docker" "start" "-a" "6355b0e813847ac985a46ba33646fca0ee11ac90f1549e6d65728cb20f4858ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling itertools v0.10.5
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[INFO] [stderr]    Compiling oorandom v11.1.5
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[INFO] [stdout] warning: use of deprecated method `BLPDecoder::mipmap_count`: use metadata() instead
[INFO] [stdout]    --> src/lib.rs:131:27
[INFO] [stdout]     |
[INFO] [stdout] 131 |             mipmaps: self.mipmap_count()?,
[INFO] [stdout]     |                           ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_blp_all_mipmaps` is never used
[INFO] [stdout]    --> src/lib.rs:370:4
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn decode_blp_all_mipmaps(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mip` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Mip {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ctx` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct Ctx {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_cmyk_fast` is never used
[INFO] [stdout]   --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn pack_rgba_to_cmyk_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_cmyk_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling wblp v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `BLPDecoder::mipmap_count`: use metadata() instead
[INFO] [stdout]    --> src/lib.rs:131:27
[INFO] [stdout]     |
[INFO] [stdout] 131 |             mipmaps: self.mipmap_count()?,
[INFO] [stdout]     |                           ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_blp_all_mipmaps` is never used
[INFO] [stdout]    --> src/lib.rs:370:4
[INFO] [stdout]     |
[INFO] [stdout] 370 | fn decode_blp_all_mipmaps(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mip` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Mip {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ctx` is never constructed
[INFO] [stdout]   --> src/encoder/blp.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct Ctx {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_cmyk_fast` is never used
[INFO] [stdout]   --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn pack_rgba_to_cmyk_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stdout]  --> src/encoder/utils/pack_rgba_to_cmyk_fast.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 23.56s
[INFO] running `Command { std: "docker" "inspect" "6355b0e813847ac985a46ba33646fca0ee11ac90f1549e6d65728cb20f4858ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6355b0e813847ac985a46ba33646fca0ee11ac90f1549e6d65728cb20f4858ac", kill_on_drop: false }`
[INFO] [stdout] 6355b0e813847ac985a46ba33646fca0ee11ac90f1549e6d65728cb20f4858ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 67ced115253b4b7ecd00e4b2de691d7e0627d1c9a618afc371cb8e2d314721ae
[INFO] running `Command { std: "docker" "start" "-a" "67ced115253b4b7ecd00e4b2de691d7e0627d1c9a618afc371cb8e2d314721ae", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated method `BLPDecoder::mipmap_count`: use metadata() instead
[INFO] [stderr]    --> src/lib.rs:131:27
[INFO] [stderr]     |
[INFO] [stderr] 131 |             mipmaps: self.mipmap_count()?,
[INFO] [stderr]     |                           ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `decode_blp_all_mipmaps` is never used
[INFO] [stderr]    --> src/lib.rs:370:4
[INFO] [stderr]     |
[INFO] [stderr] 370 | fn decode_blp_all_mipmaps(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Mip` is never constructed
[INFO] [stderr]   --> src/encoder/blp.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Mip {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ctx` is never constructed
[INFO] [stderr]   --> src/encoder/blp.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub struct Ctx {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stderr]  --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `pack_rgba_to_cmyk_fast` is never used
[INFO] [stderr]   --> src/encoder/utils/pack_rgba_to_rgb_fast.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn pack_rgba_to_cmyk_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `pack_rgba_to_rgb_fast` is never used
[INFO] [stderr]  --> src/encoder/utils/pack_rgba_to_cmyk_fast.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn pack_rgba_to_rgb_fast(src: &[u8], w: usize, h: usize) -> (Vec<u8>, usize) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `wblp` (lib) generated 7 warnings
[INFO] [stderr] warning: `wblp` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wblp-eda8ec39849e2753)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test decoder::header::tests::test_header_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wblp-8608c76818423db9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wblp
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/encoder/blp.rs - encoder::blp::encode_rgba_to_blp (line 254) ... FAILED
[INFO] [stdout] test src/encoder/blp.rs - encoder::blp::BLPEncoder (line 55) ... FAILED
[INFO] [stdout] test src/lib.rs - BLPImage::to_blp (line 252) ... FAILED
[INFO] [stdout] test src/encoder/blp.rs - encoder::blp (line 5) ... FAILED
[INFO] [stdout] test src/encoder/blp.rs - encoder::blp::encode_raw_rgba (line 317) ... FAILED
[INFO] [stdout] test src/encoder/blp.rs - encoder::blp::encode_to_blp_file (line 231) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/encoder/blp.rs - encoder::blp::encode_rgba_to_blp (line 254) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/encoder/blp.rs:261:45
[INFO] [stdout]     |
[INFO] [stdout] 255 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_254_0() {
[INFO] [stdout]     |                                      ------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 261 | let blp_bytes = encode_rgba_to_blp(&img, 85)?;
[INFO] [stdout]     |                                             ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 255 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_254_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 256 | use wblp::encode_rgba_to_blp;
[INFO] [stdout] ...
[INFO] [stdout] 261 | let blp_bytes = encode_rgba_to_blp(&img, 85)?;
[INFO] [stdout] 262 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/encoder/blp.rs - encoder::blp::BLPEncoder (line 55) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:59:49
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_55_0() {
[INFO] [stdout]    |                                      ------------------------------------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 59 | let encoder = BLPEncoder::from_path("input.png")?
[INFO] [stdout]    |                                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 56 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_55_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 57 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 63 | let blp_bytes = encoder.encode()?;
[INFO] [stdout] 64 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:63:33
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_55_0() {
[INFO] [stdout]    |                                      ------------------------------------------ this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 63 | let blp_bytes = encoder.encode()?;
[INFO] [stdout]    |                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 56 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_55_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 57 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 63 | let blp_bytes = encoder.encode()?;
[INFO] [stdout] 64 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - BLPImage::to_blp (line 252) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `decoded_img` in this scope
[INFO] [stdout]    --> src/lib.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 | let blp_bytes = decoded_img.to_blp()?;
[INFO] [stdout]     |                 ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/encoder/blp.rs - encoder::blp (line 5) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `rgba_img` in this scope
[INFO] [stdout]   --> src/encoder/blp.rs:20:25
[INFO] [stdout]    |
[INFO] [stdout] 20 | BLPEncoder::from_image(&rgba_img)?
[INFO] [stdout]    |                         ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:10:51
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 10 | let blp_bytes = BLPEncoder::from_path("input.png")?
[INFO] [stdout]    |                                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 12 |     .encode()?;
[INFO] [stdout]    |              ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:15:35
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 15 | BLPEncoder::from_path("input.png")?
[INFO] [stdout]    |                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 17 |     .save("output.blp")?;
[INFO] [stdout]    |                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:20:34
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 20 | BLPEncoder::from_image(&rgba_img)?
[INFO] [stdout]    |                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/encoder/blp.rs:22:14
[INFO] [stdout]    |
[INFO] [stdout]  6 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() {
[INFO] [stdout]    |                                      ----------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout]    |              ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  6 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_encoder_blp_rs_5_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  7 | use wblp::BLPEncoder;
[INFO] [stdout] ...
[INFO] [stdout] 22 |     .encode()?;
[INFO] [stdout] 23 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/encoder/blp.rs - encoder::blp::encode_raw_rgba (line 317) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `encode_raw_rgba` in this scope
[INFO] [stdout]    --> src/encoder/blp.rs:319:17
[INFO] [stdout]     |
[INFO] [stdout] 319 | let blp_bytes = encode_raw_rgba(&pixels, 512, 512, 85)?;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/encoder/blp.rs - encoder::blp::encode_to_blp_file (line 231) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `encode_to_blp_file` in this scope
[INFO] [stdout]    --> src/encoder/blp.rs:232:1
[INFO] [stdout]     |
[INFO] [stdout] 232 | encode_to_blp_file("input.png", "output.blp", 85)?;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/encoder/blp.rs - encoder::blp (line 5)
[INFO] [stdout]     src/encoder/blp.rs - encoder::blp::BLPEncoder (line 55)
[INFO] [stdout]     src/encoder/blp.rs - encoder::blp::encode_raw_rgba (line 317)
[INFO] [stdout]     src/encoder/blp.rs - encoder::blp::encode_rgba_to_blp (line 254)
[INFO] [stdout]     src/encoder/blp.rs - encoder::blp::encode_to_blp_file (line 231)
[INFO] [stdout]     src/lib.rs - BLPImage::to_blp (line 252)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "67ced115253b4b7ecd00e4b2de691d7e0627d1c9a618afc371cb8e2d314721ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ced115253b4b7ecd00e4b2de691d7e0627d1c9a618afc371cb8e2d314721ae", kill_on_drop: false }`
[INFO] [stdout] 67ced115253b4b7ecd00e4b2de691d7e0627d1c9a618afc371cb8e2d314721ae
