[INFO] updating cached repository aksharpatel47/algorithms-and-data-structures
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aksharpatel47/algorithms-and-data-structures
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aksharpatel47/algorithms-and-data-structures" "work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aksharpatel47/algorithms-and-data-structures" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aksharpatel47/algorithms-and-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aksharpatel47/algorithms-and-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 776ea82bfc006d7f9b6f088b267feab59dd8c2e7
[INFO] sha for GitHub repo aksharpatel47/algorithms-and-data-structures: 776ea82bfc006d7f9b6f088b267feab59dd8c2e7
[INFO] validating manifest of aksharpatel47/algorithms-and-data-structures 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 aksharpatel47/algorithms-and-data-structures 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 aksharpatel47/algorithms-and-data-structures
[INFO] finished frobbing aksharpatel47/algorithms-and-data-structures
[INFO] frobbed toml for aksharpatel47/algorithms-and-data-structures written to work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures/Cargo.toml
[INFO] started frobbing aksharpatel47/algorithms-and-data-structures
[INFO] finished frobbing aksharpatel47/algorithms-and-data-structures
[INFO] frobbed toml for aksharpatel47/algorithms-and-data-structures written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aksharpatel47/algorithms-and-data-structures/Cargo.toml
[INFO] crate aksharpatel47/algorithms-and-data-structures 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 aksharpatel47/algorithms-and-data-structures 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures:/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] 080d444f1b4f6354c2ae8a99a5d038c3e0202a0c4cf3d03df0e32a308d4837d0
[INFO] running `"docker" "start" "-a" "080d444f1b4f6354c2ae8a99a5d038c3e0202a0c4cf3d03df0e32a308d4837d0"`
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/sorting/insertion_sort/mod.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut key = values[i];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "080d444f1b4f6354c2ae8a99a5d038c3e0202a0c4cf3d03df0e32a308d4837d0"`
[INFO] running `"docker" "rm" "-f" "080d444f1b4f6354c2ae8a99a5d038c3e0202a0c4cf3d03df0e32a308d4837d0"`
[INFO] [stdout] 080d444f1b4f6354c2ae8a99a5d038c3e0202a0c4cf3d03df0e32a308d4837d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3359b9c3f699c451cc72361d4d2e06457614dcffcafecd70829576a215c12d9c
[INFO] running `"docker" "start" "-a" "3359b9c3f699c451cc72361d4d2e06457614dcffcafecd70829576a215c12d9c"`
[INFO] [stderr]    Compiling algorithms v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/sorting/insertion_sort/mod.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let mut key = values[i];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "3359b9c3f699c451cc72361d4d2e06457614dcffcafecd70829576a215c12d9c"`
[INFO] running `"docker" "rm" "-f" "3359b9c3f699c451cc72361d4d2e06457614dcffcafecd70829576a215c12d9c"`
[INFO] [stdout] 3359b9c3f699c451cc72361d4d2e06457614dcffcafecd70829576a215c12d9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aksharpatel47/algorithms-and-data-structures:/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" "test" "--frozen"`
[INFO] [stdout] 3da5a42e5014ceb172a01633155953435149793e6fb131cac6aec2039a93efc8
[INFO] running `"docker" "start" "-a" "3da5a42e5014ceb172a01633155953435149793e6fb131cac6aec2039a93efc8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/algorithms-d5603f133f735b4b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test sorting::insertion_sort::test::test_sort ... ok
[INFO] [stdout] test sorting::selection_sort::test::test_sort ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/algorithms-ccfee396cf9dff34
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests algorithms
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3da5a42e5014ceb172a01633155953435149793e6fb131cac6aec2039a93efc8"`
[INFO] running `"docker" "rm" "-f" "3da5a42e5014ceb172a01633155953435149793e6fb131cac6aec2039a93efc8"`
[INFO] [stdout] 3da5a42e5014ceb172a01633155953435149793e6fb131cac6aec2039a93efc8