[INFO] updating cached repository lordisma/Pattern_Design
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lordisma/Pattern_Design
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lordisma/Pattern_Design" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lordisma/Pattern_Design"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lordisma/Pattern_Design'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lordisma/Pattern_Design" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lordisma/Pattern_Design"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lordisma/Pattern_Design'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b8aca5af938da8ceac50dba88f3a08f95af91a8b
[INFO] sha for GitHub repo lordisma/Pattern_Design: b8aca5af938da8ceac50dba88f3a08f95af91a8b
[INFO] validating manifest of lordisma/Pattern_Design on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lordisma/Pattern_Design on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lordisma/Pattern_Design
[INFO] finished frobbing lordisma/Pattern_Design
[INFO] frobbed toml for lordisma/Pattern_Design written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lordisma/Pattern_Design/Cargo.toml
[INFO] started frobbing lordisma/Pattern_Design
[INFO] finished frobbing lordisma/Pattern_Design
[INFO] frobbed toml for lordisma/Pattern_Design written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/lordisma/Pattern_Design/Cargo.toml
[INFO] crate lordisma/Pattern_Design already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lordisma/Pattern_Design against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-3/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/lordisma/Pattern_Design:/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=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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 662b25e062b7983930e5fadb92b263a1967c2d4091a45476ea397142f26e9da9
[INFO] running `"docker" "start" "-a" "662b25e062b7983930e5fadb92b263a1967c2d4091a45476ea397142f26e9da9"`
[INFO] [stderr]     Checking patterns v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `sub`
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let sub : ConcreteSubject<ConcreteClient>;
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_sub`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obs`
[INFO] [stderr]   --> src/main.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let obs : ConcreteClient;
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_obs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sub`
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let sub : ConcreteSubject<ConcreteClient>;
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_sub`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obs`
[INFO] [stderr]   --> src/main.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let obs : ConcreteClient;
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_obs`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "662b25e062b7983930e5fadb92b263a1967c2d4091a45476ea397142f26e9da9"`
[INFO] running `"docker" "rm" "-f" "662b25e062b7983930e5fadb92b263a1967c2d4091a45476ea397142f26e9da9"`
[INFO] [stdout] 662b25e062b7983930e5fadb92b263a1967c2d4091a45476ea397142f26e9da9