[INFO] crate chip8_vm 0.4.0 is already in cache
[INFO] extracting crate chip8_vm 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/chip8_vm/0.4.0
[INFO] extracting crate chip8_vm 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/chip8_vm/0.4.0
[INFO] validating manifest of chip8_vm-0.4.0 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 chip8_vm-0.4.0 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 chip8_vm-0.4.0
[INFO] finished frobbing chip8_vm-0.4.0
[INFO] frobbed toml for chip8_vm-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/chip8_vm/0.4.0/Cargo.toml
[INFO] started frobbing chip8_vm-0.4.0
[INFO] finished frobbing chip8_vm-0.4.0
[INFO] frobbed toml for chip8_vm-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/chip8_vm/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing chip8_vm-0.4.0 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/chip8_vm/0.4.0:/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] 388fad46f31ce3fb05e13d32848b50d5d2a82d4852ba6195563c21c774742c64
[INFO] running `"docker" "start" "-a" "388fad46f31ce3fb05e13d32848b50d5d2a82d4852ba6195563c21c774742c64"`
[INFO] [stderr]    Compiling chip8_vm v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:341:21
[INFO] [stderr]     |
[INFO] [stderr] 341 |                 let mut dst = &mut self.ram[i..i+vx+1];
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "388fad46f31ce3fb05e13d32848b50d5d2a82d4852ba6195563c21c774742c64"`
[INFO] running `"docker" "rm" "-f" "388fad46f31ce3fb05e13d32848b50d5d2a82d4852ba6195563c21c774742c64"`
[INFO] [stdout] 388fad46f31ce3fb05e13d32848b50d5d2a82d4852ba6195563c21c774742c64
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/chip8_vm/0.4.0:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] e64c5e92ee644609037f9142950744fdf27666c277379f8ce0b66e1e5baedb6c
[INFO] running `"docker" "start" "-a" "e64c5e92ee644609037f9142950744fdf27666c277379f8ce0b66e1e5baedb6c"`
[INFO] [stderr]    Compiling chip8_vm v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm.rs:341:21
[INFO] [stderr]     |
[INFO] [stderr] 341 |                 let mut dst = &mut self.ram[i..i+vx+1];
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "e64c5e92ee644609037f9142950744fdf27666c277379f8ce0b66e1e5baedb6c"`
[INFO] running `"docker" "rm" "-f" "e64c5e92ee644609037f9142950744fdf27666c277379f8ce0b66e1e5baedb6c"`
[INFO] [stdout] e64c5e92ee644609037f9142950744fdf27666c277379f8ce0b66e1e5baedb6c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/chip8_vm/0.4.0:/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" "test" "--frozen"`
[INFO] [stdout] 40d596f6374b2329fb9c25dba3f99b7131ee0f31c130e6493de44b0518a2a521
[INFO] running `"docker" "start" "-a" "40d596f6374b2329fb9c25dba3f99b7131ee0f31c130e6493de44b0518a2a521"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chip8_vm-ac2e6ddbd40ef051
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test vm::tests::add_vx_overflows ... ok
[INFO] [stdout] test vm::tests::add_vx ... ok
[INFO] [stdout] test instructions::tests::unknown_register ... ok
[INFO] [stdout] test instructions::tests::known_register ... ok
[INFO] [stdout] test vm::tests::shiftr_vx_inplace ... ok
[INFO] [stdout] test vm::tests::shiftr_vx_inplace_overflow ... ok
[INFO] [stdout] test vm::tests::shiftr_vx_vy ... ok
[INFO] [stdout] test vm::tests::sub ... ok
[INFO] [stdout] test vm::tests::shiftl_vx_inplace_overflow ... ok
[INFO] [stdout] test vm::tests::shiftl_vx_inplace ... ok
[INFO] [stdout] test vm::tests::sub_borrow ... ok
[INFO] [stdout] test vm::tests::shiftl_vx_vy ... ok
[INFO] [stdout] test vm::tests::sub_inv ... ok
[INFO] [stdout] test vm::tests::sub_inv_borrow ... ok
[INFO] [stdout] test vm::tests::oversized_rom ... ok
[INFO] [stdout] test vm::tests::add_k_overflows ... ok
[INFO] [stdout] test vm::tests::add_k ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chip8_vm
[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" "40d596f6374b2329fb9c25dba3f99b7131ee0f31c130e6493de44b0518a2a521"`
[INFO] running `"docker" "rm" "-f" "40d596f6374b2329fb9c25dba3f99b7131ee0f31c130e6493de44b0518a2a521"`
[INFO] [stdout] 40d596f6374b2329fb9c25dba3f99b7131ee0f31c130e6493de44b0518a2a521