[INFO] updating cached repository YoonSung/Rust-Sort
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/YoonSung/Rust-Sort
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/YoonSung/Rust-Sort" "work/ex/beta-1.38-1/sources/1.37.0/gh/YoonSung/Rust-Sort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/YoonSung/Rust-Sort'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/YoonSung/Rust-Sort" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YoonSung/Rust-Sort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YoonSung/Rust-Sort'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 15c10df3566a6c8ab08d5020344fdfd2f3a26169
[INFO] sha for GitHub repo YoonSung/Rust-Sort: 15c10df3566a6c8ab08d5020344fdfd2f3a26169
[INFO] validating manifest of YoonSung/Rust-Sort 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 YoonSung/Rust-Sort 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 YoonSung/Rust-Sort
[INFO] finished frobbing YoonSung/Rust-Sort
[INFO] frobbed toml for YoonSung/Rust-Sort written to work/ex/beta-1.38-1/sources/1.37.0/gh/YoonSung/Rust-Sort/Cargo.toml
[INFO] started frobbing YoonSung/Rust-Sort
[INFO] finished frobbing YoonSung/Rust-Sort
[INFO] frobbed toml for YoonSung/Rust-Sort written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YoonSung/Rust-Sort/Cargo.toml
[INFO] crate YoonSung/Rust-Sort 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing YoonSung/Rust-Sort against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YoonSung/Rust-Sort:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 526e4e9ff85fe9e7e74fb61f6ea2963a8f6b86a72bb91c258a3c890046871621
[INFO] running `"docker" "start" "-a" "526e4e9ff85fe9e7e74fb61f6ea2963a8f6b86a72bb91c258a3c890046871621"`
[INFO] [stderr]    Compiling collection_sort v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `"docker" "inspect" "526e4e9ff85fe9e7e74fb61f6ea2963a8f6b86a72bb91c258a3c890046871621"`
[INFO] running `"docker" "rm" "-f" "526e4e9ff85fe9e7e74fb61f6ea2963a8f6b86a72bb91c258a3c890046871621"`
[INFO] [stdout] 526e4e9ff85fe9e7e74fb61f6ea2963a8f6b86a72bb91c258a3c890046871621
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YoonSung/Rust-Sort:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6d41c77a7e232fbb0232d1bb68afafa6c1b80fee58f589f43c9606d1dcbf6de4
[INFO] running `"docker" "start" "-a" "6d41c77a7e232fbb0232d1bb68afafa6c1b80fee58f589f43c9606d1dcbf6de4"`
[INFO] [stderr]    Compiling collection_sort v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]  --> tests/lib.rs:6:22
[INFO] [stderr]   |
[INFO] [stderr] 6 |     quick_sort::sort([1,2,3]);
[INFO] [stderr]   |                      ^^^^^^^
[INFO] [stderr]   |                      |
[INFO] [stderr]   |                      expected &mut [i32], found array of 3 elements
[INFO] [stderr]   |                      help: consider mutably borrowing here: `&mut [1,2,3]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: expected type `&mut [i32]`
[INFO] [stderr]              found type `[{integer}; 3]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `collection_sort`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6d41c77a7e232fbb0232d1bb68afafa6c1b80fee58f589f43c9606d1dcbf6de4"`
[INFO] running `"docker" "rm" "-f" "6d41c77a7e232fbb0232d1bb68afafa6c1b80fee58f589f43c9606d1dcbf6de4"`
[INFO] [stdout] 6d41c77a7e232fbb0232d1bb68afafa6c1b80fee58f589f43c9606d1dcbf6de4