[INFO] updating cached repository kidk/rust-interpreter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kidk/rust-interpreter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kidk/rust-interpreter" "work/ex/beta-1.38-1/sources/1.37.0/gh/kidk/rust-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kidk/rust-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kidk/rust-interpreter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kidk/rust-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kidk/rust-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5be15be1c3061550befa06ad8ceba9c57cf19f78
[INFO] sha for GitHub repo kidk/rust-interpreter: 5be15be1c3061550befa06ad8ceba9c57cf19f78
[INFO] validating manifest of kidk/rust-interpreter 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 kidk/rust-interpreter 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 kidk/rust-interpreter
[INFO] finished frobbing kidk/rust-interpreter
[INFO] frobbed toml for kidk/rust-interpreter written to work/ex/beta-1.38-1/sources/1.37.0/gh/kidk/rust-interpreter/Cargo.toml
[INFO] started frobbing kidk/rust-interpreter
[INFO] finished frobbing kidk/rust-interpreter
[INFO] frobbed toml for kidk/rust-interpreter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kidk/rust-interpreter/Cargo.toml
[INFO] crate kidk/rust-interpreter 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 kidk/rust-interpreter 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-1/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/kidk/rust-interpreter:/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] bfeeaab8ced2b48e9aaaef1e77606b7bcfa71da5bbfffe9907c435bd4863b220
[INFO] running `"docker" "start" "-a" "bfeeaab8ced2b48e9aaaef1e77606b7bcfa71da5bbfffe9907c435bd4863b220"`
[INFO] [stderr]    Compiling rust-brainfuck v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `debug`
[INFO] [stderr]   --> src/interpreter/mod.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn debug(&mut 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 0.81s
[INFO] running `"docker" "inspect" "bfeeaab8ced2b48e9aaaef1e77606b7bcfa71da5bbfffe9907c435bd4863b220"`
[INFO] running `"docker" "rm" "-f" "bfeeaab8ced2b48e9aaaef1e77606b7bcfa71da5bbfffe9907c435bd4863b220"`
[INFO] [stdout] bfeeaab8ced2b48e9aaaef1e77606b7bcfa71da5bbfffe9907c435bd4863b220
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/kidk/rust-interpreter:/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] 2db1d35021b989463006b01a50b1ddb99b344ae584713e26f84b2253edbcb13e
[INFO] running `"docker" "start" "-a" "2db1d35021b989463006b01a50b1ddb99b344ae584713e26f84b2253edbcb13e"`
[INFO] [stderr]    Compiling rust-brainfuck v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `debug`
[INFO] [stderr]   --> src/interpreter/mod.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn debug(&mut 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 0.51s
[INFO] running `"docker" "inspect" "2db1d35021b989463006b01a50b1ddb99b344ae584713e26f84b2253edbcb13e"`
[INFO] running `"docker" "rm" "-f" "2db1d35021b989463006b01a50b1ddb99b344ae584713e26f84b2253edbcb13e"`
[INFO] [stdout] 2db1d35021b989463006b01a50b1ddb99b344ae584713e26f84b2253edbcb13e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/kidk/rust-interpreter:/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] e1ed7b151b4f1dc47d69dee739510d4cb39bf87f980c44fb6517a5d7213d3a40
[INFO] running `"docker" "start" "-a" "e1ed7b151b4f1dc47d69dee739510d4cb39bf87f980c44fb6517a5d7213d3a40"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_brainfuck-e93b4d6ecfd9d444
[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" "e1ed7b151b4f1dc47d69dee739510d4cb39bf87f980c44fb6517a5d7213d3a40"`
[INFO] running `"docker" "rm" "-f" "e1ed7b151b4f1dc47d69dee739510d4cb39bf87f980c44fb6517a5d7213d3a40"`
[INFO] [stdout] e1ed7b151b4f1dc47d69dee739510d4cb39bf87f980c44fb6517a5d7213d3a40