[INFO] updating cached repository gbrls/stainfuck
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gbrls/stainfuck
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gbrls/stainfuck" "work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/stainfuck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/stainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gbrls/stainfuck" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/stainfuck"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/stainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2fd96aeb6a046a62bca7477e410158f744083bc6
[INFO] sha for GitHub repo gbrls/stainfuck: 2fd96aeb6a046a62bca7477e410158f744083bc6
[INFO] validating manifest of gbrls/stainfuck 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 gbrls/stainfuck 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 gbrls/stainfuck
[INFO] finished frobbing gbrls/stainfuck
[INFO] frobbed toml for gbrls/stainfuck written to work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/stainfuck/Cargo.toml
[INFO] started frobbing gbrls/stainfuck
[INFO] finished frobbing gbrls/stainfuck
[INFO] frobbed toml for gbrls/stainfuck written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/stainfuck/Cargo.toml
[INFO] crate gbrls/stainfuck 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 gbrls/stainfuck 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-0/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/gbrls/stainfuck:/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] 0b8333eb4fad504ed38e60e273f748def12ec4c0b0e77e8b23734291501e66c3
[INFO] running `"docker" "start" "-a" "0b8333eb4fad504ed38e60e273f748def12ec4c0b0e77e8b23734291501e66c3"`
[INFO] [stderr]    Compiling brainfuck_interpreter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `program` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct program {
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper camel case: `Program`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_debug`
[INFO] [stderr]    --> src/main.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn print_debug(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "0b8333eb4fad504ed38e60e273f748def12ec4c0b0e77e8b23734291501e66c3"`
[INFO] running `"docker" "rm" "-f" "0b8333eb4fad504ed38e60e273f748def12ec4c0b0e77e8b23734291501e66c3"`
[INFO] [stdout] 0b8333eb4fad504ed38e60e273f748def12ec4c0b0e77e8b23734291501e66c3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/gbrls/stainfuck:/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] 950fed78a06c9c439c8dbc81de3e1f673e5064f7b5ffa09649bc3842b09e3676
[INFO] running `"docker" "start" "-a" "950fed78a06c9c439c8dbc81de3e1f673e5064f7b5ffa09649bc3842b09e3676"`
[INFO] [stderr]    Compiling brainfuck_interpreter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `program` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct program {
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper camel case: `Program`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_debug`
[INFO] [stderr]    --> src/main.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn print_debug(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "950fed78a06c9c439c8dbc81de3e1f673e5064f7b5ffa09649bc3842b09e3676"`
[INFO] running `"docker" "rm" "-f" "950fed78a06c9c439c8dbc81de3e1f673e5064f7b5ffa09649bc3842b09e3676"`
[INFO] [stdout] 950fed78a06c9c439c8dbc81de3e1f673e5064f7b5ffa09649bc3842b09e3676
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/gbrls/stainfuck:/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] cbb52ac1c3fae09ce694007e97177c75a283006d5de797549918c9fea1dca05e
[INFO] running `"docker" "start" "-a" "cbb52ac1c3fae09ce694007e97177c75a283006d5de797549918c9fea1dca05e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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]      Running /opt/crater/target/debug/deps/brainfuck_interpreter-7734a900eda01c3b
[INFO] running `"docker" "inspect" "cbb52ac1c3fae09ce694007e97177c75a283006d5de797549918c9fea1dca05e"`
[INFO] running `"docker" "rm" "-f" "cbb52ac1c3fae09ce694007e97177c75a283006d5de797549918c9fea1dca05e"`
[INFO] [stdout] cbb52ac1c3fae09ce694007e97177c75a283006d5de797549918c9fea1dca05e