[INFO] updating cached repository KCreate/pngencoder-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KCreate/pngencoder-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KCreate/pngencoder-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/KCreate/pngencoder-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/KCreate/pngencoder-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KCreate/pngencoder-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KCreate/pngencoder-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KCreate/pngencoder-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 083570fc3388b0e71a3bcb49240ef7873378bfd9
[INFO] sha for GitHub repo KCreate/pngencoder-rust: 083570fc3388b0e71a3bcb49240ef7873378bfd9
[INFO] validating manifest of KCreate/pngencoder-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of KCreate/pngencoder-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing KCreate/pngencoder-rust
[INFO] finished frobbing KCreate/pngencoder-rust
[INFO] frobbed toml for KCreate/pngencoder-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/KCreate/pngencoder-rust/Cargo.toml
[INFO] started frobbing KCreate/pngencoder-rust
[INFO] finished frobbing KCreate/pngencoder-rust
[INFO] frobbed toml for KCreate/pngencoder-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/KCreate/pngencoder-rust/Cargo.toml
[INFO] crate KCreate/pngencoder-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/KCreate/pngencoder-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing KCreate/pngencoder-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/KCreate/pngencoder-rust:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b958d5effa6f8b9d6893d8568d07b766373a6ffbe561fc59752c1549fd31b13d
[INFO] running `"docker" "start" "-a" "b958d5effa6f8b9d6893d8568d07b766373a6ffbe561fc59752c1549fd31b13d"`
[INFO] [stderr]    Compiling image v0.22.1
[INFO] [stderr]    Compiling pngencoder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0061]: this function takes 1 parameter but 2 parameters were supplied
[INFO] [stderr]   --> src/main.rs:57:36
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let _ = image::ImageRgba8(img).save(fout, image::PNG);
[INFO] [stderr]    |                                    ^^^^ expected 1 parameter
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0061`.
[INFO] [stderr] error: Could not compile `pngencoder`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b958d5effa6f8b9d6893d8568d07b766373a6ffbe561fc59752c1549fd31b13d"`
[INFO] running `"docker" "rm" "-f" "b958d5effa6f8b9d6893d8568d07b766373a6ffbe561fc59752c1549fd31b13d"`
[INFO] [stdout] b958d5effa6f8b9d6893d8568d07b766373a6ffbe561fc59752c1549fd31b13d