[INFO] fetching crate rgb 0.8.25...
[INFO] checking rgb-0.8.25 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate rgb 0.8.25 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rgb 0.8.25 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rgb 0.8.25
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rgb 0.8.25
[INFO] tweaked toml for crates.io crate rgb 0.8.25 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate rgb 0.8.25 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06fb1d25278d8b134b5f78774ab13c4ffefb6440c145f07b917908abb71ee6de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "06fb1d25278d8b134b5f78774ab13c4ffefb6440c145f07b917908abb71ee6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06fb1d25278d8b134b5f78774ab13c4ffefb6440c145f07b917908abb71ee6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06fb1d25278d8b134b5f78774ab13c4ffefb6440c145f07b917908abb71ee6de", kill_on_drop: false }`
[INFO] [stdout] 06fb1d25278d8b134b5f78774ab13c4ffefb6440c145f07b917908abb71ee6de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5888c8b692939105dc1924c2917ddff219cb5c228783916c4bbf884df1007bf2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5888c8b692939105dc1924c2917ddff219cb5c228783916c4bbf884df1007bf2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.112
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]     Checking bytemuck v1.3.1
[INFO] [stderr]     Checking rgb v0.8.25 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'array_methods'
[INFO] [stdout]    --> src/lib.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |     assert_eq!(rgb2.as_mut_slice().as_rgb_mut(), &mut [rgb]);
[INFO] [stdout]     |                     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #76118 <https://github.com/rust-lang/rust/issues/76118> for more information
[INFO] [stdout]     = help: add `#![feature(array_methods)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: can't compare `RGB<RGB<u8>>` with `RGB<u8>`
[INFO] [stdout]    --> src/lib.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     assert_eq!(rgb2.as_mut_slice().as_rgb_mut(), &mut [rgb]);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `RGB<RGB<u8>> == RGB<u8>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `PartialEq<RGB<u8>>` is not implemented for `RGB<RGB<u8>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `PartialEq<[RGB<u8>; 1]>` for `[RGB<RGB<u8>>]`
[INFO] [stdout]     = note: required because of the requirements on the impl of `PartialEq<&mut [RGB<u8>; 1]>` for `&mut [RGB<RGB<u8>>]`
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'array_methods'
[INFO] [stdout]    --> src/lib.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |     assert_eq!(&mut [rgb], rgb2.as_mut_slice().as_pixels_mut());
[INFO] [stdout]     |                                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #76118 <https://github.com/rust-lang/rust/issues/76118> for more information
[INFO] [stdout]     = help: add `#![feature(array_methods)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `[RGB<u8>]: internal::convert::AsPixels<RGB<u8>>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:194:48
[INFO] [stdout]     |
[INFO] [stdout] 194 |     assert_eq!(&mut [rgb], rgb2.as_mut_slice().as_pixels_mut());
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^ the trait `internal::convert::AsPixels<RGB<u8>>` is not implemented for `[RGB<u8>]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following implementations were found:
[INFO] [stdout]               <[T] as internal::convert::AsPixels<RGB<T>>>
[INFO] [stdout]               <[T] as internal::convert::AsPixels<RGBA<T>>>
[INFO] [stdout]               <[T] as internal::convert::AsPixels<alt::BGR<T>>>
[INFO] [stdout]               <[T] as internal::convert::AsPixels<alt::BGRA<T>>>
[INFO] [stdout]             and 2 others
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'array_methods'
[INFO] [stdout]    --> src/lib.rs:222:22
[INFO] [stdout]     |
[INFO] [stdout] 222 |     assert_eq!(rgba2.as_mut_slice().as_rgba_mut(), &mut [rgba]);
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #76118 <https://github.com/rust-lang/rust/issues/76118> for more information
[INFO] [stdout]     = help: add `#![feature(array_methods)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: can't compare `RGBA<RGBA<u16>>` with `RGBA<u16>`
[INFO] [stdout]    --> src/lib.rs:222:5
[INFO] [stdout]     |
[INFO] [stdout] 222 |     assert_eq!(rgba2.as_mut_slice().as_rgba_mut(), &mut [rgba]);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `RGBA<RGBA<u16>> == RGBA<u16>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `PartialEq<RGBA<u16>>` is not implemented for `RGBA<RGBA<u16>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `PartialEq<[RGBA<u16>; 1]>` for `[RGBA<RGBA<u16>>]`
[INFO] [stdout]     = note: required because of the requirements on the impl of `PartialEq<&mut [RGBA<u16>; 1]>` for `&mut [RGBA<RGBA<u16>>]`
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rgb`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5888c8b692939105dc1924c2917ddff219cb5c228783916c4bbf884df1007bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5888c8b692939105dc1924c2917ddff219cb5c228783916c4bbf884df1007bf2", kill_on_drop: false }`
[INFO] [stdout] 5888c8b692939105dc1924c2917ddff219cb5c228783916c4bbf884df1007bf2