[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-1.38-1/sources/1.37.0/gh/TheClinery1/alt-brainf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TheClinery1/alt-brainf'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TheClinery1/alt-brainf" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheClinery1/alt-brainf"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TheClinery1/alt-brainf 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 TheClinery1/alt-brainf
[INFO] finished frobbing TheClinery1/alt-brainf
[INFO] frobbed toml for TheClinery1/alt-brainf written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 TheClinery1/alt-brainf 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-4/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/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5d40d645d553fee4d6a83910967ecd81671f973624b4dc3c02ae95d18638b722
[INFO] running `"docker" "start" "-a" "5d40d645d553fee4d6a83910967ecd81671f973624b4dc3c02ae95d18638b722"`
[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 1.74s
[INFO] running `"docker" "inspect" "5d40d645d553fee4d6a83910967ecd81671f973624b4dc3c02ae95d18638b722"`
[INFO] running `"docker" "rm" "-f" "5d40d645d553fee4d6a83910967ecd81671f973624b4dc3c02ae95d18638b722"`
[INFO] [stdout] 5d40d645d553fee4d6a83910967ecd81671f973624b4dc3c02ae95d18638b722
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 15505be28f798a1948fa748bd392e55edfe8d4d032df57a769708077550c9e20
[INFO] running `"docker" "start" "-a" "15505be28f798a1948fa748bd392e55edfe8d4d032df57a769708077550c9e20"`
[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 0.78s
[INFO] running `"docker" "inspect" "15505be28f798a1948fa748bd392e55edfe8d4d032df57a769708077550c9e20"`
[INFO] running `"docker" "rm" "-f" "15505be28f798a1948fa748bd392e55edfe8d4d032df57a769708077550c9e20"`
[INFO] [stdout] 15505be28f798a1948fa748bd392e55edfe8d4d032df57a769708077550c9e20
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 352397033f48cd6577fd5f86b6417fc328cbcedb09c52dee422b9ff1daf66728
[INFO] running `"docker" "start" "-a" "352397033f48cd6577fd5f86b6417fc328cbcedb09c52dee422b9ff1daf66728"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/alt_brainf-0293da3259201131
[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" "352397033f48cd6577fd5f86b6417fc328cbcedb09c52dee422b9ff1daf66728"`
[INFO] running `"docker" "rm" "-f" "352397033f48cd6577fd5f86b6417fc328cbcedb09c52dee422b9ff1daf66728"`
[INFO] [stdout] 352397033f48cd6577fd5f86b6417fc328cbcedb09c52dee422b9ff1daf66728