[INFO] updating cached repository brain-lang/brainfuck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/brain-lang/brainfuck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/brain-lang/brainfuck" "work/ex/beta-1.37-6/sources/1.36.0/gh/brain-lang/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/brain-lang/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/brain-lang/brainfuck" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/brain-lang/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/brain-lang/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a7e6127ec581fc53cf0a1b659952d8d8a6cd30d
[INFO] sha for GitHub repo brain-lang/brainfuck: 1a7e6127ec581fc53cf0a1b659952d8d8a6cd30d
[INFO] validating manifest of brain-lang/brainfuck 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 brain-lang/brainfuck 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 brain-lang/brainfuck
[INFO] finished frobbing brain-lang/brainfuck
[INFO] frobbed toml for brain-lang/brainfuck written to work/ex/beta-1.37-6/sources/1.36.0/gh/brain-lang/brainfuck/Cargo.toml
[INFO] started frobbing brain-lang/brainfuck
[INFO] finished frobbing brain-lang/brainfuck
[INFO] frobbed toml for brain-lang/brainfuck written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/brain-lang/brainfuck/Cargo.toml
[INFO] crate brain-lang/brainfuck 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 brain-lang/brainfuck 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-2/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/brain-lang/brainfuck:/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] 1ee68b437f081988a816cb24b8577cd37a4e33754ece5243bf2bf4ece5179f8d
[INFO] running `"docker" "start" "-a" "1ee68b437f081988a816cb24b8577cd37a4e33754ece5243bf2bf4ece5179f8d"`
[INFO] [stderr]    Compiling libc v0.2.22
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling bitflags v0.8.2
[INFO] [stderr]    Compiling colored v1.5.1
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling brain-brainfuck v1.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:100:18
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[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 27.10s
[INFO] running `"docker" "inspect" "1ee68b437f081988a816cb24b8577cd37a4e33754ece5243bf2bf4ece5179f8d"`
[INFO] running `"docker" "rm" "-f" "1ee68b437f081988a816cb24b8577cd37a4e33754ece5243bf2bf4ece5179f8d"`
[INFO] [stdout] 1ee68b437f081988a816cb24b8577cd37a4e33754ece5243bf2bf4ece5179f8d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/brain-lang/brainfuck:/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] e6c947f5efa282720638c88be2691bbe51ac24c64aba4f980922cb6043c1adf5
[INFO] running `"docker" "start" "-a" "e6c947f5efa282720638c88be2691bbe51ac24c64aba4f980922cb6043c1adf5"`
[INFO] [stderr]    Compiling brain-brainfuck v1.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:100:18
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn fill_matching(mut program: &mut Vec<Instruction>, start: usize) -> usize {
[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 2.41s
[INFO] running `"docker" "inspect" "e6c947f5efa282720638c88be2691bbe51ac24c64aba4f980922cb6043c1adf5"`
[INFO] running `"docker" "rm" "-f" "e6c947f5efa282720638c88be2691bbe51ac24c64aba4f980922cb6043c1adf5"`
[INFO] [stdout] e6c947f5efa282720638c88be2691bbe51ac24c64aba4f980922cb6043c1adf5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/brain-lang/brainfuck:/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] 78e7984d0edaf3b6bd0fd39fdd5b37f8ca420c72bbcf08c44ee60ae14c5d8bd4
[INFO] running `"docker" "start" "-a" "78e7984d0edaf3b6bd0fd39fdd5b37f8ca420c72bbcf08c44ee60ae14c5d8bd4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/brainfuck-37aa3ecf468d640a
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test interpreter::tests::move_left_past_zero ... ok
[INFO] [stdout] test interpreter::tests::callback_behaviour ... ok
[INFO] [stdout] test interpreter::tests::hello_world ... ok
[INFO] [stdout] test interpreter::tests::basic_movements ... ok
[INFO] [stdout] test interpreter::tests::move_right_past_capacity ... ok
[INFO] [stdout] test interpreter::tests::nested_loops ... ok
[INFO] [stdout] test interpreter::tests::reading_input ... ok
[INFO] [stdout] test interpreter::tests::basic_looping ... ok
[INFO] [stdout] test debug_format::tests::from_str ... ok
[INFO] [stdout] test interpreter::tests::skip_first_loop ... ok
[INFO] [stdout] test instruction::tests::display ... ok
[INFO] [stdout] test interpreter::tests::wrapping ... ok
[INFO] [stdout] test optlevel::tests::from_str ... ok
[INFO] [stdout] test interpreter::tests::mismatched_jumps ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps3 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps1 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps11 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps10 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps5 ... ok
[INFO] [stdout] test precompiler::tests::optimization_levels ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps4 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps2 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps9 ... ok
[INFO] [stdout] test precompiler::tests::over_max_expected_jumps ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps7 ... ok
[INFO] [stdout] test precompiler::tests::skip_unrecognized ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps6 ... ok
[INFO] [stdout] test precompiler::tests::mismatched_jumps8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/brainfuck-6ef8154c3d9b72b0
[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] [stderr]    Doc-tests brainfuck
[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" "78e7984d0edaf3b6bd0fd39fdd5b37f8ca420c72bbcf08c44ee60ae14c5d8bd4"`
[INFO] running `"docker" "rm" "-f" "78e7984d0edaf3b6bd0fd39fdd5b37f8ca420c72bbcf08c44ee60ae14c5d8bd4"`
[INFO] [stdout] 78e7984d0edaf3b6bd0fd39fdd5b37f8ca420c72bbcf08c44ee60ae14c5d8bd4