[INFO] updating cached repository peterhorne/gba
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/peterhorne/gba
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/peterhorne/gba" "work/ex/beta-1.37-6/sources/1.36.0/gh/peterhorne/gba"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/peterhorne/gba'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/peterhorne/gba" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/peterhorne/gba"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/peterhorne/gba'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 65044283219465e9806506c398a170b01ed24a41
[INFO] sha for GitHub repo peterhorne/gba: 65044283219465e9806506c398a170b01ed24a41
[INFO] validating manifest of peterhorne/gba 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 peterhorne/gba 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 peterhorne/gba
[INFO] finished frobbing peterhorne/gba
[INFO] frobbed toml for peterhorne/gba written to work/ex/beta-1.37-6/sources/1.36.0/gh/peterhorne/gba/Cargo.toml
[INFO] started frobbing peterhorne/gba
[INFO] finished frobbing peterhorne/gba
[INFO] frobbed toml for peterhorne/gba written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/peterhorne/gba/Cargo.toml
[INFO] crate peterhorne/gba 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 peterhorne/gba against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/peterhorne/gba:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ef94ec7a600788f1b5fcaa83856551ac5aebfffef75b097acf2d21e7e34e2fff
[INFO] running `"docker" "start" "-a" "ef94ec7a600788f1b5fcaa83856551ac5aebfffef75b097acf2d21e7e34e2fff"`
[INFO] [stderr]    Compiling libc v0.2.37
[INFO] [stderr]    Compiling syn v0.12.13
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling structopt-derive v0.2.4
[INFO] [stderr]    Compiling structopt v0.2.4
[INFO] [stderr]    Compiling gba v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/cpu.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use bus::{Read, Write};
[INFO] [stderr]   |                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instruction`
[INFO] [stderr]  --> src/cpu.rs:6:39
[INFO] [stderr]   |
[INFO] [stderr] 6 | use instruction::{EncodedInstruction, Instruction};
[INFO] [stderr]   |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SetBit`
[INFO] [stderr]  --> src/execute.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use bit::{Bit, Bits, SetBit, SetBits};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SetBits`
[INFO] [stderr]  --> src/execute.rs:1:30
[INFO] [stderr]   |
[INFO] [stderr] 1 | use bit::{Bit, Bits, SetBit, SetBits};
[INFO] [stderr]   |                              ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `gba`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ef94ec7a600788f1b5fcaa83856551ac5aebfffef75b097acf2d21e7e34e2fff"`
[INFO] running `"docker" "rm" "-f" "ef94ec7a600788f1b5fcaa83856551ac5aebfffef75b097acf2d21e7e34e2fff"`
[INFO] [stdout] ef94ec7a600788f1b5fcaa83856551ac5aebfffef75b097acf2d21e7e34e2fff