[INFO] updating cached repository https://github.com/KCreate/pngencoder-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 083570fc3388b0e71a3bcb49240ef7873378bfd9
[INFO] testing KCreate/pngencoder-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKCreate%2Fpngencoder-rust" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KCreate/pngencoder-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/KCreate/pngencoder-rust
[INFO] finished tweaking git repo https://github.com/KCreate/pngencoder-rust
[INFO] tweaked toml for git repo https://github.com/KCreate/pngencoder-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/KCreate/pngencoder-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b48c3742d7c5b77505e58f7ed3de686c98f37c7c3df10c5c56d40d42725ce228
[INFO] running `"docker" "start" "-a" "b48c3742d7c5b77505e58f7ed3de686c98f37c7c3df10c5c56d40d42725ce228"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling deflate v0.8.4
[INFO] [stderr]    Compiling png v0.16.4
[INFO] [stderr]    Compiling image v0.23.4
[INFO] [stderr]    Compiling pngencoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find function, tuple struct or tuple variant `ImageRgba8` in crate `image`
[INFO] [stderr]   --> src/main.rs:57:20
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let _ = image::ImageRgba8(img).save(fout, image::PNG);
[INFO] [stderr]    |                    ^^^^^^^^^^ not found in `image`
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 3  | use image::DynamicImage::ImageRgba8;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `PNG` in crate `image`
[INFO] [stderr]   --> src/main.rs:57:54
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let _ = image::ImageRgba8(img).save(fout, image::PNG);
[INFO] [stderr]    |                                                      ^^^ not found in `image`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `pngencoder`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b48c3742d7c5b77505e58f7ed3de686c98f37c7c3df10c5c56d40d42725ce228"`
[INFO] running `"docker" "rm" "-f" "b48c3742d7c5b77505e58f7ed3de686c98f37c7c3df10c5c56d40d42725ce228"`
[INFO] [stdout] b48c3742d7c5b77505e58f7ed3de686c98f37c7c3df10c5c56d40d42725ce228