[INFO] updating cached repository TheClinery1/alt-brainf
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TheClinery1/alt-brainf
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TheClinery1/alt-brainf" "work/ex/beta-1.37-6/sources/1.36.0/gh/TheClinery1/alt-brainf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/TheClinery1/alt-brainf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TheClinery1/alt-brainf" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TheClinery1/alt-brainf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TheClinery1/alt-brainf'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 327753b2ca488fd7b969e721743b2ef0ca303299
[INFO] sha for GitHub repo TheClinery1/alt-brainf: 327753b2ca488fd7b969e721743b2ef0ca303299
[INFO] validating manifest of TheClinery1/alt-brainf 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 TheClinery1/alt-brainf 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 TheClinery1/alt-brainf
[INFO] finished frobbing TheClinery1/alt-brainf
[INFO] frobbed toml for TheClinery1/alt-brainf written to work/ex/beta-1.37-6/sources/1.36.0/gh/TheClinery1/alt-brainf/Cargo.toml
[INFO] started frobbing TheClinery1/alt-brainf
[INFO] finished frobbing TheClinery1/alt-brainf
[INFO] frobbed toml for TheClinery1/alt-brainf written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TheClinery1/alt-brainf/Cargo.toml
[INFO] crate TheClinery1/alt-brainf 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing TheClinery1/alt-brainf 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/TheClinery1/alt-brainf:/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] 38069845907d6bc61fa2275f30787181a8d2bf3e9904b41a064c3013bc7bd687
[INFO] running `"docker" "start" "-a" "38069845907d6bc61fa2275f30787181a8d2bf3e9904b41a064c3013bc7bd687"`
[INFO] [stderr]    Compiling alt-brainf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:508:13
[INFO] [stderr]     |
[INFO] [stderr] 508 |         let mut instructions;
[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 1.77s
[INFO] running `"docker" "inspect" "38069845907d6bc61fa2275f30787181a8d2bf3e9904b41a064c3013bc7bd687"`
[INFO] running `"docker" "rm" "-f" "38069845907d6bc61fa2275f30787181a8d2bf3e9904b41a064c3013bc7bd687"`
[INFO] [stdout] 38069845907d6bc61fa2275f30787181a8d2bf3e9904b41a064c3013bc7bd687
[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/TheClinery1/alt-brainf:/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] 7dc17aae7d44611803f81ddaf8d55cc0f9d0be28b4b3696c8fba528d2f8e6e4e
[INFO] running `"docker" "start" "-a" "7dc17aae7d44611803f81ddaf8d55cc0f9d0be28b4b3696c8fba528d2f8e6e4e"`
[INFO] [stderr]    Compiling alt-brainf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:508:13
[INFO] [stderr]     |
[INFO] [stderr] 508 |         let mut instructions;
[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 0.79s
[INFO] running `"docker" "inspect" "7dc17aae7d44611803f81ddaf8d55cc0f9d0be28b4b3696c8fba528d2f8e6e4e"`
[INFO] running `"docker" "rm" "-f" "7dc17aae7d44611803f81ddaf8d55cc0f9d0be28b4b3696c8fba528d2f8e6e4e"`
[INFO] [stdout] 7dc17aae7d44611803f81ddaf8d55cc0f9d0be28b4b3696c8fba528d2f8e6e4e
[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/TheClinery1/alt-brainf:/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] 112861b1d7994605b93fcd7d6ca13eafb43e0524592b15540ff5160c317955e7
[INFO] running `"docker" "start" "-a" "112861b1d7994605b93fcd7d6ca13eafb43e0524592b15540ff5160c317955e7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/alt_brainf-852896f2612b7ebd
[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" "112861b1d7994605b93fcd7d6ca13eafb43e0524592b15540ff5160c317955e7"`
[INFO] running `"docker" "rm" "-f" "112861b1d7994605b93fcd7d6ca13eafb43e0524592b15540ff5160c317955e7"`
[INFO] [stdout] 112861b1d7994605b93fcd7d6ca13eafb43e0524592b15540ff5160c317955e7