[INFO] updating cached repository ebobby/chip8-vm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ebobby/chip8-vm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ebobby/chip8-vm" "work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ebobby/chip8-vm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ebobby/chip8-vm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ebobby/chip8-vm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64905d8daa53a076b18395693038486de5f1907e
[INFO] sha for GitHub repo ebobby/chip8-vm: 64905d8daa53a076b18395693038486de5f1907e
[INFO] validating manifest of ebobby/chip8-vm 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 ebobby/chip8-vm 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 ebobby/chip8-vm
[INFO] finished frobbing ebobby/chip8-vm
[INFO] frobbed toml for ebobby/chip8-vm written to work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm/Cargo.toml
[INFO] started frobbing ebobby/chip8-vm
[INFO] finished frobbing ebobby/chip8-vm
[INFO] frobbed toml for ebobby/chip8-vm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ebobby/chip8-vm/Cargo.toml
[INFO] crate ebobby/chip8-vm 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 ebobby/chip8-vm against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 40cad74f326cf5018b34509c3b59f323e131babf8bc343dcf3b2e41b8c784e4f
[INFO] running `"docker" "start" "-a" "40cad74f326cf5018b34509c3b59f323e131babf8bc343dcf3b2e41b8c784e4f"`
[INFO] [stderr]    Compiling chip8-vm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/chip8/ram.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn dump_mem(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/chip8/mod.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn dump_mem(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "40cad74f326cf5018b34509c3b59f323e131babf8bc343dcf3b2e41b8c784e4f"`
[INFO] running `"docker" "rm" "-f" "40cad74f326cf5018b34509c3b59f323e131babf8bc343dcf3b2e41b8c784e4f"`
[INFO] [stdout] 40cad74f326cf5018b34509c3b59f323e131babf8bc343dcf3b2e41b8c784e4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3ce86b5913d393887118386e5483d466b13d3988e2369ab5163c6f658356c3ff
[INFO] running `"docker" "start" "-a" "3ce86b5913d393887118386e5483d466b13d3988e2369ab5163c6f658356c3ff"`
[INFO] [stderr]    Compiling chip8-vm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/chip8/ram.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn dump_mem(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/chip8/mod.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn dump_mem(&self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "3ce86b5913d393887118386e5483d466b13d3988e2369ab5163c6f658356c3ff"`
[INFO] running `"docker" "rm" "-f" "3ce86b5913d393887118386e5483d466b13d3988e2369ab5163c6f658356c3ff"`
[INFO] [stdout] 3ce86b5913d393887118386e5483d466b13d3988e2369ab5163c6f658356c3ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ebobby/chip8-vm:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 20928680c0aba5c10672a5dce7301a9ff213895e627730a5db742700cba5f059
[INFO] running `"docker" "start" "-a" "20928680c0aba5c10672a5dce7301a9ff213895e627730a5db742700cba5f059"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chip8_vm-a6eea9ef621e9239
[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" "20928680c0aba5c10672a5dce7301a9ff213895e627730a5db742700cba5f059"`
[INFO] running `"docker" "rm" "-f" "20928680c0aba5c10672a5dce7301a9ff213895e627730a5db742700cba5f059"`
[INFO] [stdout] 20928680c0aba5c10672a5dce7301a9ff213895e627730a5db742700cba5f059