[INFO] cloning repository https://github.com/wbjohnston/gameboy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wbjohnston/gameboy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbjohnston%2Fgameboy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbjohnston%2Fgameboy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b941701ef8a8b59bc8a87c03a7799433d9fd0c7
[INFO] checking wbjohnston/gameboy against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbjohnston%2Fgameboy" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wbjohnston/gameboy on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wbjohnston/gameboy
[INFO] finished tweaking git repo https://github.com/wbjohnston/gameboy
[INFO] tweaked toml for git repo https://github.com/wbjohnston/gameboy written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/wbjohnston/gameboy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb7eebe60cfd6e90c427ea30c245310a5e88158210d1e847205d5f5c25da1832
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cb7eebe60cfd6e90c427ea30c245310a5e88158210d1e847205d5f5c25da1832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb7eebe60cfd6e90c427ea30c245310a5e88158210d1e847205d5f5c25da1832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb7eebe60cfd6e90c427ea30c245310a5e88158210d1e847205d5f5c25da1832", kill_on_drop: false }`
[INFO] [stdout] cb7eebe60cfd6e90c427ea30c245310a5e88158210d1e847205d5f5c25da1832
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 816cd75d5dd3a09ef6d568c55443f5ea7cfbb8aa50876f747a4bae87579dd938
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "816cd75d5dd3a09ef6d568c55443f5ea7cfbb8aa50876f747a4bae87579dd938", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr]     Checking gameboy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `mmu`
[INFO] [stdout]   --> src/ppu.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn step(&mut self, mmu: &mut MMU, n_cycles: u8) {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_mmu`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_cycles`
[INFO] [stdout]   --> src/ppu.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn step(&mut self, mmu: &mut MMU, n_cycles: u8) {
[INFO] [stdout]    |                                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_cycles`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]   --> src/cartridge.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn read_ram(&self, address: u16) -> u8 {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/util.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn set_bit(target: u16, n: u8, value: bool) -> u16 {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_n_flag`
[INFO] [stdout]     --> src/cpu.rs:1145:6
[INFO] [stdout]      |
[INFO] [stdout] 1145 |   fn get_n_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `n_flag`
[INFO] [stdout]     --> src/cpu.rs:1174:6
[INFO] [stdout]      |
[INFO] [stdout] 1174 |   fn n_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `h_flag`
[INFO] [stdout]     --> src/cpu.rs:1178:6
[INFO] [stdout]      |
[INFO] [stdout] 1178 |   fn h_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cartridge`
[INFO] [stdout]   --> src/bin/debugger.rs:47:7
[INFO] [stdout]    |
[INFO] [stdout] 47 |   let cartridge = {
[INFO] [stdout]    |       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cartridge`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cartridge`
[INFO] [stdout]   --> src/bin/debugger.rs:47:7
[INFO] [stdout]    |
[INFO] [stdout] 47 |   let cartridge = {
[INFO] [stdout]    |       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cartridge`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mmu`
[INFO] [stdout]   --> src/ppu.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn step(&mut self, mmu: &mut MMU, n_cycles: u8) {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_mmu`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_cycles`
[INFO] [stdout]   --> src/ppu.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |   pub fn step(&mut self, mmu: &mut MMU, n_cycles: u8) {
[INFO] [stdout]    |                                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_cycles`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]   --> src/cartridge.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn read_ram(&self, address: u16) -> u8 {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/util.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn set_bit(target: u16, n: u8, value: bool) -> u16 {
[INFO] [stdout]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_n_flag`
[INFO] [stdout]     --> src/cpu.rs:1145:6
[INFO] [stdout]      |
[INFO] [stdout] 1145 |   fn get_n_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `n_flag`
[INFO] [stdout]     --> src/cpu.rs:1174:6
[INFO] [stdout]      |
[INFO] [stdout] 1174 |   fn n_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `h_flag`
[INFO] [stdout]     --> src/cpu.rs:1178:6
[INFO] [stdout]      |
[INFO] [stdout] 1178 |   fn h_flag(&self) -> bool {
[INFO] [stdout]      |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "816cd75d5dd3a09ef6d568c55443f5ea7cfbb8aa50876f747a4bae87579dd938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "816cd75d5dd3a09ef6d568c55443f5ea7cfbb8aa50876f747a4bae87579dd938", kill_on_drop: false }`
[INFO] [stdout] 816cd75d5dd3a09ef6d568c55443f5ea7cfbb8aa50876f747a4bae87579dd938