[INFO] updating cached repository SteffenSunde/aoc_2018_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SteffenSunde/aoc_2018_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SteffenSunde/aoc_2018_rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SteffenSunde/aoc_2018_rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SteffenSunde/aoc_2018_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SteffenSunde/aoc_2018_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e63cbdb6473c1bc47a600459fab74d510f8a9ebe
[INFO] sha for GitHub repo SteffenSunde/aoc_2018_rs: e63cbdb6473c1bc47a600459fab74d510f8a9ebe
[INFO] validating manifest of SteffenSunde/aoc_2018_rs 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 SteffenSunde/aoc_2018_rs 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 SteffenSunde/aoc_2018_rs
[INFO] finished frobbing SteffenSunde/aoc_2018_rs
[INFO] frobbed toml for SteffenSunde/aoc_2018_rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs/Cargo.toml
[INFO] started frobbing SteffenSunde/aoc_2018_rs
[INFO] finished frobbing SteffenSunde/aoc_2018_rs
[INFO] frobbed toml for SteffenSunde/aoc_2018_rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SteffenSunde/aoc_2018_rs/Cargo.toml
[INFO] crate SteffenSunde/aoc_2018_rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing SteffenSunde/aoc_2018_rs 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs:/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] de85e501fd401d44974443db78acf35a305bba0427abba121ab2ef56a861f3c4
[INFO] running `"docker" "start" "-a" "de85e501fd401d44974443db78acf35a305bba0427abba121ab2ef56a861f3c4"`
[INFO] [stderr]    Compiling aoc_2018_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day02.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut df2 = BufReader::new(&df2);
[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 1.28s
[INFO] running `"docker" "inspect" "de85e501fd401d44974443db78acf35a305bba0427abba121ab2ef56a861f3c4"`
[INFO] running `"docker" "rm" "-f" "de85e501fd401d44974443db78acf35a305bba0427abba121ab2ef56a861f3c4"`
[INFO] [stdout] de85e501fd401d44974443db78acf35a305bba0427abba121ab2ef56a861f3c4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs:/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] fe8facf53eaf5bf865c28ad2a0d793d200628064a9a058388e24646357761d86
[INFO] running `"docker" "start" "-a" "fe8facf53eaf5bf865c28ad2a0d793d200628064a9a058388e24646357761d86"`
[INFO] [stderr]    Compiling aoc_2018_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day02.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut df2 = BufReader::new(&df2);
[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 1.64s
[INFO] running `"docker" "inspect" "fe8facf53eaf5bf865c28ad2a0d793d200628064a9a058388e24646357761d86"`
[INFO] running `"docker" "rm" "-f" "fe8facf53eaf5bf865c28ad2a0d793d200628064a9a058388e24646357761d86"`
[INFO] [stdout] fe8facf53eaf5bf865c28ad2a0d793d200628064a9a058388e24646357761d86
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SteffenSunde/aoc_2018_rs:/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] ed5b0cd483f91e01bf8b9ce6fd2c065f0f54a75941fbe9e5a6369381216f7a17
[INFO] running `"docker" "start" "-a" "ed5b0cd483f91e01bf8b9ce6fd2c065f0f54a75941fbe9e5a6369381216f7a17"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/aoc_2018_rs-a4e0dcfcf310449d
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test day01::tests::test_part1 ... ok
[INFO] [stdout] test day02::tests::test_part1 ... ok
[INFO] [stdout] test day02::tests::test_part2 ... ok
[INFO] [stdout] test day01::tests::test_part2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ed5b0cd483f91e01bf8b9ce6fd2c065f0f54a75941fbe9e5a6369381216f7a17"`
[INFO] running `"docker" "rm" "-f" "ed5b0cd483f91e01bf8b9ce6fd2c065f0f54a75941fbe9e5a6369381216f7a17"`
[INFO] [stdout] ed5b0cd483f91e01bf8b9ce6fd2c065f0f54a75941fbe9e5a6369381216f7a17