[INFO] updating cached repository alice/aoc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alice/aoc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alice/aoc" "work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alice/aoc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alice/aoc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alice/aoc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 335ca2ea0619391e498f6f80b6b2b565c30ee960
[INFO] sha for GitHub repo alice/aoc: 335ca2ea0619391e498f6f80b6b2b565c30ee960
[INFO] validating manifest of alice/aoc 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 alice/aoc 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 alice/aoc
[INFO] finished frobbing alice/aoc
[INFO] frobbed toml for alice/aoc written to work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc/Cargo.toml
[INFO] started frobbing alice/aoc
[INFO] finished frobbing alice/aoc
[INFO] frobbed toml for alice/aoc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alice/aoc/Cargo.toml
[INFO] crate alice/aoc 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 alice/aoc 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc:/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] fbe7ea0a5c5596e4682b97b7af69e926e9bac1c831d698ea2a1d7cea96af1aad
[INFO] running `"docker" "start" "-a" "fbe7ea0a5c5596e4682b97b7af69e926e9bac1c831d698ea2a1d7cea96af1aad"`
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling ndarray v0.11.0
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling itertools v0.7.4
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling advent_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut current_size: usize = START_SIZE;
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut current_view = grid.slice(s![0..current_size, 0..current_size]);
[INFO] [stderr]    |             ----^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.55s
[INFO] running `"docker" "inspect" "fbe7ea0a5c5596e4682b97b7af69e926e9bac1c831d698ea2a1d7cea96af1aad"`
[INFO] running `"docker" "rm" "-f" "fbe7ea0a5c5596e4682b97b7af69e926e9bac1c831d698ea2a1d7cea96af1aad"`
[INFO] [stdout] fbe7ea0a5c5596e4682b97b7af69e926e9bac1c831d698ea2a1d7cea96af1aad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc:/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] 338c44f38f1c15849402fec3742448d221e6229ccd7b39f24f8cc8c70098878d
[INFO] running `"docker" "start" "-a" "338c44f38f1c15849402fec3742448d221e6229ccd7b39f24f8cc8c70098878d"`
[INFO] [stderr]    Compiling advent_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut current_size: usize = START_SIZE;
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let mut current_view = grid.slice(s![0..current_size, 0..current_size]);
[INFO] [stderr]    |             ----^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "338c44f38f1c15849402fec3742448d221e6229ccd7b39f24f8cc8c70098878d"`
[INFO] running `"docker" "rm" "-f" "338c44f38f1c15849402fec3742448d221e6229ccd7b39f24f8cc8c70098878d"`
[INFO] [stdout] 338c44f38f1c15849402fec3742448d221e6229ccd7b39f24f8cc8c70098878d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/alice/aoc:/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] e5e4f5916b729c2c3370d640fb722952157fb98fde748de97752f8b4b85e9fb2
[INFO] running `"docker" "start" "-a" "e5e4f5916b729c2c3370d640fb722952157fb98fde748de97752f8b4b85e9fb2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/advent_game-c42e19fa78efaaf7
[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" "e5e4f5916b729c2c3370d640fb722952157fb98fde748de97752f8b4b85e9fb2"`
[INFO] running `"docker" "rm" "-f" "e5e4f5916b729c2c3370d640fb722952157fb98fde748de97752f8b4b85e9fb2"`
[INFO] [stdout] e5e4f5916b729c2c3370d640fb722952157fb98fde748de97752f8b4b85e9fb2