[INFO] updating cached repository zhouyuexie/rust-algorithms
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zhouyuexie/rust-algorithms
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zhouyuexie/rust-algorithms" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/zhouyuexie/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/zhouyuexie/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zhouyuexie/rust-algorithms" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/zhouyuexie/rust-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/zhouyuexie/rust-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 868e92ee26f80d4e5772f4af1c8b257cdc527575
[INFO] sha for GitHub repo zhouyuexie/rust-algorithms: 868e92ee26f80d4e5772f4af1c8b257cdc527575
[INFO] validating manifest of zhouyuexie/rust-algorithms 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 zhouyuexie/rust-algorithms 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 zhouyuexie/rust-algorithms
[INFO] finished frobbing zhouyuexie/rust-algorithms
[INFO] frobbed toml for zhouyuexie/rust-algorithms written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/zhouyuexie/rust-algorithms/Cargo.toml
[INFO] started frobbing zhouyuexie/rust-algorithms
[INFO] finished frobbing zhouyuexie/rust-algorithms
[INFO] frobbed toml for zhouyuexie/rust-algorithms written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/zhouyuexie/rust-algorithms/Cargo.toml
[INFO] crate zhouyuexie/rust-algorithms 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 zhouyuexie/rust-algorithms 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/zhouyuexie/rust-algorithms:/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] 2b76c52c58146e49b8c4dbcf3d19f9df935b0e3c223e973dfa08e38dffd776c2
[INFO] running `"docker" "start" "-a" "2b76c52c58146e49b8c4dbcf3d19f9df935b0e3c223e973dfa08e38dffd776c2"`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rust-algorithm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/quick.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let a = quick(&array_value, 0, array_value.len() - 1);
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/quick.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let a = quick(&array_value, 0, array_value.len() - 1);
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `"docker" "inspect" "2b76c52c58146e49b8c4dbcf3d19f9df935b0e3c223e973dfa08e38dffd776c2"`
[INFO] running `"docker" "rm" "-f" "2b76c52c58146e49b8c4dbcf3d19f9df935b0e3c223e973dfa08e38dffd776c2"`
[INFO] [stdout] 2b76c52c58146e49b8c4dbcf3d19f9df935b0e3c223e973dfa08e38dffd776c2