[INFO] fetching crate pxo 0.2.0...
[INFO] testing pxo-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate pxo 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate pxo 0.2.0
[INFO] finished tweaking crates.io crate pxo 0.2.0
[INFO] tweaked toml for crates.io crate pxo 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pxo 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 packages to latest compatible versions
[INFO] [stderr]       Adding image v0.24.9 (available: v0.25.8)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] [stderr]       Adding zstd v0.12.4 (available: v0.13.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6743cdac5b11fee72f975bf295458e0b331fc8555d100e6c94678e6fda32b195
[INFO] running `Command { std: "docker" "start" "-a" "6743cdac5b11fee72f975bf295458e0b331fc8555d100e6c94678e6fda32b195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6743cdac5b11fee72f975bf295458e0b331fc8555d100e6c94678e6fda32b195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6743cdac5b11fee72f975bf295458e0b331fc8555d100e6c94678e6fda32b195", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dfe017e2af7fdeb8f9b5d17dd5ed984d71edee65e07f5b82d3794a8cc67975a
[INFO] running `Command { std: "docker" "start" "-a" "7dfe017e2af7fdeb8f9b5d17dd5ed984d71edee65e07f5b82d3794a8cc67975a", kill_on_drop: false }`
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling zerocopy v0.8.27
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[INFO] [stderr]    Compiling pxo v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.50s
[INFO] running `Command { std: "docker" "inspect" "7dfe017e2af7fdeb8f9b5d17dd5ed984d71edee65e07f5b82d3794a8cc67975a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dfe017e2af7fdeb8f9b5d17dd5ed984d71edee65e07f5b82d3794a8cc67975a", kill_on_drop: false }`
[INFO] [stdout] 7dfe017e2af7fdeb8f9b5d17dd5ed984d71edee65e07f5b82d3794a8cc67975a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdf2728ef2fd7103664bb2fc26da76ae7883480e2f8cbf80bdb7ba9b9dc732c5
[INFO] running `Command { std: "docker" "start" "-a" "bdf2728ef2fd7103664bb2fc26da76ae7883480e2f8cbf80bdb7ba9b9dc732c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling pxo v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "bdf2728ef2fd7103664bb2fc26da76ae7883480e2f8cbf80bdb7ba9b9dc732c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf2728ef2fd7103664bb2fc26da76ae7883480e2f8cbf80bdb7ba9b9dc732c5", kill_on_drop: false }`
[INFO] [stdout] bdf2728ef2fd7103664bb2fc26da76ae7883480e2f8cbf80bdb7ba9b9dc732c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9f94da0d38062cd24528cac62bd60c468a77eec3b1ded4a97792e989c14144d3
[INFO] running `Command { std: "docker" "start" "-a" "9f94da0d38062cd24528cac62bd60c468a77eec3b1ded4a97792e989c14144d3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pxo-7a5e6be492df5146)
[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 pxo
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 19) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 19) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SpriteOptions`
[INFO] [stdout]   --> src/lib.rs:26:37
[INFO] [stdout]    |
[INFO] [stdout] 26 | let sprite = pxo::Sprite::from(pxo, SpriteOptions::Default())?;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ use of undeclared type `SpriteOptions`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 18 + use pxo::SpriteOptions;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SpriteOptions`
[INFO] [stdout]   --> src/lib.rs:29:38
[INFO] [stdout]    |
[INFO] [stdout] 29 | let sprite = pxo::Sprite::load(file, SpriteOptions::Default())?;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ use of undeclared type `SpriteOptions`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 18 + use pxo::SpriteOptions;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `sprite_a` in this scope
[INFO] [stdout]   --> src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    | ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 36 - sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout] 36 + sprite = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to introduce a new binding
[INFO] [stdout]    |
[INFO] [stdout] 36 | let sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    | +++
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `file_a` in this scope
[INFO] [stdout]   --> src/lib.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 | sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    |                              ^^^^^^ help: a local variable with a similar name exists: `file`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SpriteOptions`
[INFO] [stdout]   --> src/lib.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 | sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ use of undeclared type `SpriteOptions`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 18 + use pxo::SpriteOptions;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `sprite_b` in this scope
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    | ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 37 - sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout] 37 + sprite = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    |
[INFO] [stdout] help: you might have meant to introduce a new binding
[INFO] [stdout]    |
[INFO] [stdout] 37 | let sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    | +++
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `file_b` in this scope
[INFO] [stdout]   --> src/lib.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 | sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    |                              ^^^^^^ help: a local variable with a similar name exists: `file`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SpriteOptions`
[INFO] [stdout]   --> src/lib.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 37 | sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^ use of undeclared type `SpriteOptions`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 18 + use pxo::SpriteOptions;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `sprite_a` in this scope
[INFO] [stdout]   --> src/lib.rs:39:57
[INFO] [stdout]    |
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout]    |                                                         ^^^^^^^^ help: a local variable with a similar name exists: `sprite`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `sprite_b` in this scope
[INFO] [stdout]   --> src/lib.rs:39:67
[INFO] [stdout]    |
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout]    |                                                                   ^^^^^^^^ help: a local variable with a similar name exists: `sprite`
[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/lib.rs:22:49
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] 22 | let file = File::open("path/to/your/sprite.pxo")?;
[INFO] [stdout]    |                                                 ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 25 | let pxo = pxo::Pxo::load(file)?;
[INFO] [stdout]    |                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:26:62
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 26 | let sprite = pxo::Sprite::from(pxo, SpriteOptions::Default())?;
[INFO] [stdout]    |                                                              ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:29:63
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 29 | let sprite = pxo::Sprite::load(file, SpriteOptions::Default())?;
[INFO] [stdout]    |                                                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:33:73
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 33 | let (packed, image) = pxo::PackedSprite::pack_sprite(sprite, 2048, 2048)?;
[INFO] [stdout]    |                                                                         ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:36:63
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 36 | sprite_a = pxo::Sprite::load(file_a, SpriteOptions::Default())?;
[INFO] [stdout]    |                                                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:37:63
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 37 | sprite_b = pxo::Sprite::load(file_b, SpriteOptions::Default())?;
[INFO] [stdout]    |                                                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     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/lib.rs:39:89
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout]    |                                                                                         ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 20 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_19_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 21 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 39 | let (packed, image) = pxo::PackedSprite::pack_sprites(&[sprite_a, sprite_b], 2048, 2048)?;
[INFO] [stdout] 40 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 19)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "9f94da0d38062cd24528cac62bd60c468a77eec3b1ded4a97792e989c14144d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f94da0d38062cd24528cac62bd60c468a77eec3b1ded4a97792e989c14144d3", kill_on_drop: false }`
[INFO] [stdout] 9f94da0d38062cd24528cac62bd60c468a77eec3b1ded4a97792e989c14144d3
