[INFO] updating cached repository https://github.com/joshuaholmes/chip8_this_time_in_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c4e8e5454f70e72838f04c5a891ed75d6d3ddf9
[INFO] checking joshuaholmes/chip8_this_time_in_rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuaholmes%2Fchip8_this_time_in_rust" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joshuaholmes/chip8_this_time_in_rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/joshuaholmes/chip8_this_time_in_rust
[INFO] finished tweaking git repo https://github.com/joshuaholmes/chip8_this_time_in_rust
[INFO] tweaked toml for git repo https://github.com/joshuaholmes/chip8_this_time_in_rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/joshuaholmes/chip8_this_time_in_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 17757c785fd548f74c7f8721c6e1c8f5a1575cc2b0cfaf1d4bfff853cbd8f7bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "17757c785fd548f74c7f8721c6e1c8f5a1575cc2b0cfaf1d4bfff853cbd8f7bf"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling sdl2-sys v0.19.0
[INFO] [stderr]     Checking bitflags v0.6.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.19.0
[INFO] [stderr]     Checking chip8_this_time_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cpu.rs:98:79
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Err(e) => panic!("Couldn't open program file. Error message: {}", Error::description(&e)),
[INFO] [stderr]    |                                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/cpu.rs:111:79
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Err(e) => panic!("Couldn't read program file. Error message: {}", Error::description(&e)),
[INFO] [stderr]     |                                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/cpu.rs:98:79
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Err(e) => panic!("Couldn't open program file. Error message: {}", Error::description(&e)),
[INFO] [stderr]    |                                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/cpu.rs:111:79
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Err(e) => panic!("Couldn't read program file. Error message: {}", Error::description(&e)),
[INFO] [stderr]     |                                                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:161:19
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn opcode_sys(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:167:19
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn opcode_cls(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:176:19
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn opcode_ret(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:161:19
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn opcode_sys(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:167:19
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn opcode_cls(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/opcode.rs:176:19
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn opcode_ret(args: &OpCodeArgs, cpu: &mut Cpu) {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.95s
[INFO] running `"docker" "inspect" "17757c785fd548f74c7f8721c6e1c8f5a1575cc2b0cfaf1d4bfff853cbd8f7bf"`
[INFO] running `"docker" "rm" "-f" "17757c785fd548f74c7f8721c6e1c8f5a1575cc2b0cfaf1d4bfff853cbd8f7bf"`
[INFO] [stdout] 17757c785fd548f74c7f8721c6e1c8f5a1575cc2b0cfaf1d4bfff853cbd8f7bf