[INFO] crate graphics_buffer 0.6.0 is already in cache
[INFO] extracting crate graphics_buffer 0.6.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/graphics_buffer/0.6.0
[INFO] extracting crate graphics_buffer 0.6.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/graphics_buffer/0.6.0
[INFO] validating manifest of graphics_buffer-0.6.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of graphics_buffer-0.6.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing graphics_buffer-0.6.0
[INFO] removed 4 missing examples
[INFO] finished frobbing graphics_buffer-0.6.0
[INFO] frobbed toml for graphics_buffer-0.6.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/graphics_buffer/0.6.0/Cargo.toml
[INFO] started frobbing graphics_buffer-0.6.0
[INFO] removed 4 missing examples
[INFO] finished frobbing graphics_buffer-0.6.0
[INFO] frobbed toml for graphics_buffer-0.6.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/graphics_buffer/0.6.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing graphics_buffer-0.6.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/graphics_buffer/0.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 43150760932ba54c97afa76087f7a704ea4879d6da1003cab3b87e252ff855e3
[INFO] running `"docker" "start" "-a" "43150760932ba54c97afa76087f7a704ea4879d6da1003cab3b87e252ff855e3"`
[INFO] [stderr]    Compiling piston-viewport v0.5.0
[INFO] [stderr]    Compiling piston2d-graphics v0.30.0
[INFO] [stderr]    Compiling graphics_buffer v0.6.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.30s
[INFO] running `"docker" "inspect" "43150760932ba54c97afa76087f7a704ea4879d6da1003cab3b87e252ff855e3"`
[INFO] running `"docker" "rm" "-f" "43150760932ba54c97afa76087f7a704ea4879d6da1003cab3b87e252ff855e3"`
[INFO] [stdout] 43150760932ba54c97afa76087f7a704ea4879d6da1003cab3b87e252ff855e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/graphics_buffer/0.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1ecc7f5a994f24504a9b66da5898b3e317c276b2ec6eb08a66a10e31d9091bc9
[INFO] running `"docker" "start" "-a" "1ecc7f5a994f24504a9b66da5898b3e317c276b2ec6eb08a66a10e31d9091bc9"`
[INFO] [stderr]    Compiling graphics_buffer v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `piston_window`
[INFO] [stderr]  --> examples/window.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use piston_window::{
[INFO] [stderr]   |     ^^^^^^^^^^^^^ use of undeclared type or module `piston_window`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `to_g2d_texture` found for type `graphics_buffer::RenderBuffer` in the current scope
[INFO] [stderr]   --> examples/window.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 |         .to_g2d_texture(&mut window.factory, &TextureSettings::new())
[INFO] [stderr]    |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `graphics_buffer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1ecc7f5a994f24504a9b66da5898b3e317c276b2ec6eb08a66a10e31d9091bc9"`
[INFO] running `"docker" "rm" "-f" "1ecc7f5a994f24504a9b66da5898b3e317c276b2ec6eb08a66a10e31d9091bc9"`
[INFO] [stdout] 1ecc7f5a994f24504a9b66da5898b3e317c276b2ec6eb08a66a10e31d9091bc9