[INFO] updating cached repository https://github.com/winfield/CHIP-9
[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] [stderr] From https://github.com/winfield/CHIP-9
[INFO] [stderr]    0c466c1..40973c8  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 40973c8d32281ee31d01237820bcc4fc745a296f
[INFO] checking winfield/CHIP-9 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwinfield%2FCHIP-9" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/winfield/CHIP-9 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/winfield/CHIP-9
[INFO] finished tweaking git repo https://github.com/winfield/CHIP-9
[INFO] tweaked toml for git repo https://github.com/winfield/CHIP-9 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/winfield/CHIP-9 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+74e80468347471779be6060d8d7d6d04e98e467f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 35991fe4427676aaa1593e063f979c23460b55d14b1d08f96121037d24fefa13
[INFO] running `"docker" "start" "-a" "35991fe4427676aaa1593e063f979c23460b55d14b1d08f96121037d24fefa13"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking chip-9 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `Cpu`
[INFO] [stderr]  --> src/cpu.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Cpu {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn new() -> Cpu {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `current_opcode`
[INFO] [stderr]   --> src/cpu.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn current_opcode(&mut self) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `process_opcode`
[INFO] [stderr]   --> src/cpu.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn process_opcode(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::Cpu`
[INFO] [stderr]    --> src/cpu.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     use super::Cpu;
[INFO] [stderr]     |         ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Cpu`
[INFO] [stderr]  --> src/cpu.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Cpu {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn new() -> Cpu {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `current_opcode`
[INFO] [stderr]   --> src/cpu.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn current_opcode(&mut self) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `process_opcode`
[INFO] [stderr]   --> src/cpu.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn process_opcode(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "35991fe4427676aaa1593e063f979c23460b55d14b1d08f96121037d24fefa13"`
[INFO] running `"docker" "rm" "-f" "35991fe4427676aaa1593e063f979c23460b55d14b1d08f96121037d24fefa13"`
[INFO] [stdout] 35991fe4427676aaa1593e063f979c23460b55d14b1d08f96121037d24fefa13