[INFO] fetching crate retro-display 0.1.0... [INFO] testing retro-display-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2 [INFO] extracting crate retro-display 0.1.0 into /workspace/builds/worker-0-tc2/source [INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml [INFO] started tweaking crates.io crate retro-display 0.1.0 [INFO] finished tweaking crates.io crate retro-display 0.1.0 [INFO] tweaked toml for crates.io crate retro-display 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate retro-display 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate retro-display 0.1.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3e9700ea45117986282fccd0e27ba4f9d4a533a388806866839773b14595477c [INFO] running `Command { std: "docker" "start" "-a" "3e9700ea45117986282fccd0e27ba4f9d4a533a388806866839773b14595477c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3e9700ea45117986282fccd0e27ba4f9d4a533a388806866839773b14595477c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e9700ea45117986282fccd0e27ba4f9d4a533a388806866839773b14595477c", kill_on_drop: false }` [INFO] [stdout] 3e9700ea45117986282fccd0e27ba4f9d4a533a388806866839773b14595477c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a70926254f4890b8147df5bf7c2600dc889dec0681ce46cf78bbbd4b41b6b480 [INFO] running `Command { std: "docker" "start" "-a" "a70926254f4890b8147df5bf7c2600dc889dec0681ce46cf78bbbd4b41b6b480", kill_on_drop: false }` [INFO] [stderr] Compiling az v1.2.1 [INFO] [stderr] Compiling byteorder v1.5.0 [INFO] [stderr] Compiling embedded-graphics-core v0.4.0 [INFO] [stderr] Compiling retro-display v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/c64.rs:45:12 [INFO] [stdout] | [INFO] [stdout] 45 | impl const From for VicIIPalette { [INFO] [stdout] | ^^^^^^^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] = help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/c64.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 58 | impl const From for VicIIPalette { [INFO] [stdout] | ^^^^^^^^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] = help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/c64.rs:65:12 [INFO] [stdout] | [INFO] [stdout] 65 | impl const From for VicIIPalette { [INFO] [stdout] | ^^^^^^^^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] = help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> src/c64.rs:71:12 [INFO] [stdout] | [INFO] [stdout] 71 | impl const From for Rgb888 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] = help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `PixelColor` which is not `const` [INFO] [stdout] --> src/c64.rs:94:12 [INFO] [stdout] | [INFO] [stdout] 94 | impl const PixelColor for VicIIPalette { [INFO] [stdout] | ^^^^^^^^^^ this trait is not `const` [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `OriginDimensions` which is not `const` [INFO] [stdout] --> src/c64.rs:150:12 [INFO] [stdout] | [INFO] [stdout] 150 | impl const OriginDimensions for PetsciiDisplay { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `Gray8: [const] From` is not satisfied [INFO] [stdout] --> src/c64.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | Gray8::from(value).into() [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] note: trait `From` is implemented but not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-graphics-core-0.4.0/src/pixelcolor/conversion.rs:94:11 [INFO] [stdout] | [INFO] [stdout] 94 | $(impl From<$rgb_type> for $gray_type { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 108 | impl_rgb_to_and_from_gray!(Gray2, Gray4, Gray8 => Rgb555, Bgr555, Rgb565, Bgr565, Rgb666, Bgr666, Rgb888, Bgr888); [INFO] [stdout] | ----------------------------------------------------------------------------------------------------------------- in this macro invocation [INFO] [stdout] = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/retro_display-2a7d924a6f26a45e.long-type-8729866215449131551.txt' [INFO] [stdout] = note: consider using `--verbose` to print the full type name to the console [INFO] [stdout] = note: this error originates in the macro `impl_rgb_to_and_from_gray` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `Gray8: [const] From` is not satisfied [INFO] [stdout] --> src/c64.rs:67:9 [INFO] [stdout] | [INFO] [stdout] 67 | Gray8::from(value).into() [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] note: trait `From` is implemented but not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-graphics-core-0.4.0/src/pixelcolor/conversion.rs:94:11 [INFO] [stdout] | [INFO] [stdout] 94 | $(impl From<$rgb_type> for $gray_type { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 108 | impl_rgb_to_and_from_gray!(Gray2, Gray4, Gray8 => Rgb555, Bgr555, Rgb565, Bgr565, Rgb666, Bgr666, Rgb888, Bgr888); [INFO] [stdout] | ----------------------------------------------------------------------------------------------------------------- in this macro invocation [INFO] [stdout] = note: the full name for the type has been written to '/opt/rustwide/target/debug/deps/retro_display-2a7d924a6f26a45e.long-type-2705551660847256284.txt' [INFO] [stdout] = note: consider using `--verbose` to print the full type name to the console [INFO] [stdout] = note: this error originates in the macro `impl_rgb_to_and_from_gray` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0015]: cannot call non-const method `::luma` in constant functions [INFO] [stdout] --> src/c64.rs:47:21 [INFO] [stdout] | [INFO] [stdout] 47 | match value.luma() { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: method `luma` is not const because trait `GrayColor` is not const [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/embedded-graphics-core-0.4.0/src/pixelcolor/gray_color.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | pub trait GrayColor: PixelColor { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this trait is not const [INFO] [stdout] 8 | /// Returns the luma channel value. [INFO] [stdout] 9 | fn luma(&self) -> u8; [INFO] [stdout] | --------------------- this method is not const [INFO] [stdout] = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0015, E0277, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0015`. [INFO] [stdout] [INFO] [stderr] error: could not compile `retro-display` (lib) due to 9 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "a70926254f4890b8147df5bf7c2600dc889dec0681ce46cf78bbbd4b41b6b480", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a70926254f4890b8147df5bf7c2600dc889dec0681ce46cf78bbbd4b41b6b480", kill_on_drop: false }` [INFO] [stdout] a70926254f4890b8147df5bf7c2600dc889dec0681ce46cf78bbbd4b41b6b480