[INFO] updating cached repository jbyte/chip8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jbyte/chip8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jbyte/chip8" "work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jbyte/chip8" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbyte/chip8"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbyte/chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26a560fc55c7d5f815923b9628295015f4d0cc47
[INFO] sha for GitHub repo jbyte/chip8: 26a560fc55c7d5f815923b9628295015f4d0cc47
[INFO] validating manifest of jbyte/chip8 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 jbyte/chip8 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 jbyte/chip8
[INFO] finished frobbing jbyte/chip8
[INFO] frobbed toml for jbyte/chip8 written to work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8/Cargo.toml
[INFO] started frobbing jbyte/chip8
[INFO] finished frobbing jbyte/chip8
[INFO] frobbed toml for jbyte/chip8 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbyte/chip8/Cargo.toml
[INFO] crate jbyte/chip8 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 jbyte/chip8 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8:/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] 14d6a122a387f507499abef8db7597b52b68264d185c2b0652ea0f2cc4e53afb
[INFO] running `"docker" "start" "-a" "14d6a122a387f507499abef8db7597b52b68264d185c2b0652ea0f2cc4e53afb"`
[INFO] [stderr]    Compiling nom v2.2.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/debugger/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_START`
[INFO] [stderr]  --> src/cpu/cpu.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const INTERPRETER_START: u32 = 0x000;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_END`
[INFO] [stderr]  --> src/cpu/cpu.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const INTERPRETER_END: u32 = 0x1FF;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_LENGTH`
[INFO] [stderr]  --> src/cpu/cpu.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DATA_END`
[INFO] [stderr]   --> src/cpu/cpu.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const DATA_END: usize = 0xFFF;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DATA_LENGTH`
[INFO] [stderr]   --> src/cpu/cpu.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/cpu/cpu.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         stdin().read(&mut c);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.37s
[INFO] running `"docker" "inspect" "14d6a122a387f507499abef8db7597b52b68264d185c2b0652ea0f2cc4e53afb"`
[INFO] running `"docker" "rm" "-f" "14d6a122a387f507499abef8db7597b52b68264d185c2b0652ea0f2cc4e53afb"`
[INFO] [stdout] 14d6a122a387f507499abef8db7597b52b68264d185c2b0652ea0f2cc4e53afb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8:/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] 19f934785edec489b4401e8a990038a659eca5c9391a720b17fb6a1e91199404
[INFO] running `"docker" "start" "-a" "19f934785edec489b4401e8a990038a659eca5c9391a720b17fb6a1e91199404"`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/debugger/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_START`
[INFO] [stderr]  --> src/cpu/cpu.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const INTERPRETER_START: u32 = 0x000;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_END`
[INFO] [stderr]  --> src/cpu/cpu.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const INTERPRETER_END: u32 = 0x1FF;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INTERPRETER_LENGTH`
[INFO] [stderr]  --> src/cpu/cpu.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DATA_END`
[INFO] [stderr]   --> src/cpu/cpu.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const DATA_END: usize = 0xFFF;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DATA_LENGTH`
[INFO] [stderr]   --> src/cpu/cpu.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/cpu/cpu.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         stdin().read(&mut c);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "19f934785edec489b4401e8a990038a659eca5c9391a720b17fb6a1e91199404"`
[INFO] running `"docker" "rm" "-f" "19f934785edec489b4401e8a990038a659eca5c9391a720b17fb6a1e91199404"`
[INFO] [stdout] 19f934785edec489b4401e8a990038a659eca5c9391a720b17fb6a1e91199404
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbyte/chip8:/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] 0d2122e45cfb7909ee1ee01654d1e69f6025b78f6857e8f8ba988554e3258ba7
[INFO] running `"docker" "start" "-a" "0d2122e45cfb7909ee1ee01654d1e69f6025b78f6857e8f8ba988554e3258ba7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chip8-e69912eef0a23bf0
[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" "0d2122e45cfb7909ee1ee01654d1e69f6025b78f6857e8f8ba988554e3258ba7"`
[INFO] running `"docker" "rm" "-f" "0d2122e45cfb7909ee1ee01654d1e69f6025b78f6857e8f8ba988554e3258ba7"`
[INFO] [stdout] 0d2122e45cfb7909ee1ee01654d1e69f6025b78f6857e8f8ba988554e3258ba7