[INFO] updating cached repository arirahikkala/donationcount
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/arirahikkala/donationcount
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/arirahikkala/donationcount" "work/ex/beta-1.37-6/sources/1.36.0/gh/arirahikkala/donationcount"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/arirahikkala/donationcount'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arirahikkala/donationcount" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 399e4bbe792815888f92826c7e1238a29c39c4bd
[INFO] sha for GitHub repo arirahikkala/donationcount: 399e4bbe792815888f92826c7e1238a29c39c4bd
[INFO] validating manifest of arirahikkala/donationcount on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of arirahikkala/donationcount on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing arirahikkala/donationcount
[INFO] finished frobbing arirahikkala/donationcount
[INFO] frobbed toml for arirahikkala/donationcount written to work/ex/beta-1.37-6/sources/1.36.0/gh/arirahikkala/donationcount/Cargo.toml
[INFO] started frobbing arirahikkala/donationcount
[INFO] finished frobbing arirahikkala/donationcount
[INFO] frobbed toml for arirahikkala/donationcount written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount/Cargo.toml
[INFO] crate arirahikkala/donationcount already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arirahikkala/donationcount against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 16ddc59e66a7d17d0bfdbd53d72e9cb60d8c243b49e6a131e1cc3fb76189372b
[INFO] running `"docker" "start" "-a" "16ddc59e66a7d17d0bfdbd53d72e9cb60d8c243b49e6a131e1cc3fb76189372b"`
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling donationcount v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let (mut small, mut large) = if aas.len() > bbs.len() { (bbs, aas) } else { (aas, bbs) };
[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 5.81s
[INFO] running `"docker" "inspect" "16ddc59e66a7d17d0bfdbd53d72e9cb60d8c243b49e6a131e1cc3fb76189372b"`
[INFO] running `"docker" "rm" "-f" "16ddc59e66a7d17d0bfdbd53d72e9cb60d8c243b49e6a131e1cc3fb76189372b"`
[INFO] [stdout] 16ddc59e66a7d17d0bfdbd53d72e9cb60d8c243b49e6a131e1cc3fb76189372b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c37758b111539456bc0317df88f1d3bf8d0bf5f999963c77efc983dc10b61367
[INFO] running `"docker" "start" "-a" "c37758b111539456bc0317df88f1d3bf8d0bf5f999963c77efc983dc10b61367"`
[INFO] [stderr]    Compiling donationcount v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |             let (mut small, mut large) = if aas.len() > bbs.len() { (bbs, aas) } else { (aas, bbs) };
[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 0.83s
[INFO] running `"docker" "inspect" "c37758b111539456bc0317df88f1d3bf8d0bf5f999963c77efc983dc10b61367"`
[INFO] running `"docker" "rm" "-f" "c37758b111539456bc0317df88f1d3bf8d0bf5f999963c77efc983dc10b61367"`
[INFO] [stdout] c37758b111539456bc0317df88f1d3bf8d0bf5f999963c77efc983dc10b61367
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/arirahikkala/donationcount:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e07dd74131045b112287760868c065652c97386c2f29de12dc078c0e337efafd
[INFO] running `"docker" "start" "-a" "e07dd74131045b112287760868c065652c97386c2f29de12dc078c0e337efafd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/donationcount-db724bdc82dd4027
[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" "e07dd74131045b112287760868c065652c97386c2f29de12dc078c0e337efafd"`
[INFO] running `"docker" "rm" "-f" "e07dd74131045b112287760868c065652c97386c2f29de12dc078c0e337efafd"`
[INFO] [stdout] e07dd74131045b112287760868c065652c97386c2f29de12dc078c0e337efafd