[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-1.38-1/sources/1.37.0/gh/arirahikkala/donationcount"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/arirahikkala/donationcount'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arirahikkala/donationcount" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/arirahikkala/donationcount"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of arirahikkala/donationcount 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 arirahikkala/donationcount
[INFO] finished frobbing arirahikkala/donationcount
[INFO] frobbed toml for arirahikkala/donationcount written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 arirahikkala/donationcount 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-0/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/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 9f807ac4795e8f279410fc3ba1cd3e723dbac16eb5e53f71293599c1f48f624a
[INFO] running `"docker" "start" "-a" "9f807ac4795e8f279410fc3ba1cd3e723dbac16eb5e53f71293599c1f48f624a"`
[INFO] [stderr]    Compiling memmap v0.7.0
[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 2.65s
[INFO] running `"docker" "inspect" "9f807ac4795e8f279410fc3ba1cd3e723dbac16eb5e53f71293599c1f48f624a"`
[INFO] running `"docker" "rm" "-f" "9f807ac4795e8f279410fc3ba1cd3e723dbac16eb5e53f71293599c1f48f624a"`
[INFO] [stdout] 9f807ac4795e8f279410fc3ba1cd3e723dbac16eb5e53f71293599c1f48f624a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] f6a9595e368f3bb3f72ab770456424d68fe86b0cbee4115bdc5d9d8b31bdb3a4
[INFO] running `"docker" "start" "-a" "f6a9595e368f3bb3f72ab770456424d68fe86b0cbee4115bdc5d9d8b31bdb3a4"`
[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 0.96s
[INFO] running `"docker" "inspect" "f6a9595e368f3bb3f72ab770456424d68fe86b0cbee4115bdc5d9d8b31bdb3a4"`
[INFO] running `"docker" "rm" "-f" "f6a9595e368f3bb3f72ab770456424d68fe86b0cbee4115bdc5d9d8b31bdb3a4"`
[INFO] [stdout] f6a9595e368f3bb3f72ab770456424d68fe86b0cbee4115bdc5d9d8b31bdb3a4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 118f4c9898bb82f88e5e41e75b0a505258ed0406bfb24e1e0568e4001e59ff2a
[INFO] running `"docker" "start" "-a" "118f4c9898bb82f88e5e41e75b0a505258ed0406bfb24e1e0568e4001e59ff2a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/donationcount-b0ab5626148ebddc
[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" "118f4c9898bb82f88e5e41e75b0a505258ed0406bfb24e1e0568e4001e59ff2a"`
[INFO] running `"docker" "rm" "-f" "118f4c9898bb82f88e5e41e75b0a505258ed0406bfb24e1e0568e4001e59ff2a"`
[INFO] [stdout] 118f4c9898bb82f88e5e41e75b0a505258ed0406bfb24e1e0568e4001e59ff2a