[INFO] updating cached repository ryandbair/rust-ffmpeg-jpeg-sample
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ryandbair/rust-ffmpeg-jpeg-sample
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ryandbair/rust-ffmpeg-jpeg-sample" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ryandbair/rust-ffmpeg-jpeg-sample"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ryandbair/rust-ffmpeg-jpeg-sample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ryandbair/rust-ffmpeg-jpeg-sample" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ryandbair/rust-ffmpeg-jpeg-sample"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ryandbair/rust-ffmpeg-jpeg-sample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb7e7efe8657cb886a8d99f520b30bc797fcd90a
[INFO] sha for GitHub repo ryandbair/rust-ffmpeg-jpeg-sample: cb7e7efe8657cb886a8d99f520b30bc797fcd90a
[INFO] validating manifest of ryandbair/rust-ffmpeg-jpeg-sample on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ryandbair/rust-ffmpeg-jpeg-sample on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ryandbair/rust-ffmpeg-jpeg-sample
[INFO] removed path dependency ffmpeg from ryandbair/rust-ffmpeg-jpeg-sample
[INFO] finished frobbing ryandbair/rust-ffmpeg-jpeg-sample
[INFO] frobbed toml for ryandbair/rust-ffmpeg-jpeg-sample written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ryandbair/rust-ffmpeg-jpeg-sample/Cargo.toml
[INFO] started frobbing ryandbair/rust-ffmpeg-jpeg-sample
[INFO] removed path dependency ffmpeg from ryandbair/rust-ffmpeg-jpeg-sample
[INFO] finished frobbing ryandbair/rust-ffmpeg-jpeg-sample
[INFO] frobbed toml for ryandbair/rust-ffmpeg-jpeg-sample written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ryandbair/rust-ffmpeg-jpeg-sample/Cargo.toml
[INFO] crate ryandbair/rust-ffmpeg-jpeg-sample already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ryandbair/rust-ffmpeg-jpeg-sample/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ryandbair/rust-ffmpeg-jpeg-sample against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-3/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ryandbair/rust-ffmpeg-jpeg-sample:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4c55a9a6dbbc6b2ed41806cdff460bc23b109367c71aba35d8473e1b327c2f13
[INFO] running `"docker" "start" "-a" "4c55a9a6dbbc6b2ed41806cdff460bc23b109367c71aba35d8473e1b327c2f13"`
[INFO] [stderr] warning: dependency (ffmpeg) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Checking lzw v0.9.0
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]     Checking png v0.4.3
[INFO] [stderr]    Compiling ffmpeg-sys v2.8.9
[INFO] [stderr]     Checking gif v0.7.0
[INFO] [stderr]     Checking image v0.7.2
[INFO] [stderr]     Checking ffmpeg v0.2.0-alpha.1
[INFO] [stderr]     Checking ffmpeg-jpeg v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |                 writeln!(&mut std::io::stderr(), "got a frame, size is: {}x{}", frame.width(), frame.height());
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |                 writeln!(&mut std::io::stderr(), "got a frame, size is: {}x{}", frame.width(), frame.height());
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.53s
[INFO] running `"docker" "inspect" "4c55a9a6dbbc6b2ed41806cdff460bc23b109367c71aba35d8473e1b327c2f13"`
[INFO] running `"docker" "rm" "-f" "4c55a9a6dbbc6b2ed41806cdff460bc23b109367c71aba35d8473e1b327c2f13"`
[INFO] [stdout] 4c55a9a6dbbc6b2ed41806cdff460bc23b109367c71aba35d8473e1b327c2f13