[INFO] updating cached repository https://github.com/chrsmutti/chip8
[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] 7481756a4475fb46e8c4c0ea4acace3260e8c8d9
[INFO] checking chrsmutti/chip8 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrsmutti%2Fchip8" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrsmutti/chip8 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/chrsmutti/chip8
[INFO] finished tweaking git repo https://github.com/chrsmutti/chip8
[INFO] tweaked toml for git repo https://github.com/chrsmutti/chip8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/chrsmutti/chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fe1261c1bd72a52458e0e23f9370adacd5111975a84d24aa3454313815748135
[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" "fe1261c1bd72a52458e0e23f9370adacd5111975a84d24aa3454313815748135"`
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]    Compiling syn v0.14.7
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:317:9
[INFO] [stderr]     |
[INFO] [stderr] 317 |         processor.const_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |         processor.const_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:343:9
[INFO] [stderr]     |
[INFO] [stderr] 343 |         processor.const_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:355:9
[INFO] [stderr]     |
[INFO] [stderr] 355 |         processor.misc_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:367:9
[INFO] [stderr]     |
[INFO] [stderr] 367 |         processor.misc_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:375:9
[INFO] [stderr]     |
[INFO] [stderr] 375 |         processor.control_flow_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:386:9
[INFO] [stderr]     |
[INFO] [stderr] 386 |         processor.control_flow_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:397:9
[INFO] [stderr]     |
[INFO] [stderr] 397 |         processor.control_flow_ops(opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:411:9
[INFO] [stderr]     |
[INFO] [stderr] 411 |         processor.control_flow_ops(call_opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/processor.rs:412:9
[INFO] [stderr]     |
[INFO] [stderr] 412 |         processor.misc_ops(return_opcode);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.20s
[INFO] running `"docker" "inspect" "fe1261c1bd72a52458e0e23f9370adacd5111975a84d24aa3454313815748135"`
[INFO] running `"docker" "rm" "-f" "fe1261c1bd72a52458e0e23f9370adacd5111975a84d24aa3454313815748135"`
[INFO] [stdout] fe1261c1bd72a52458e0e23f9370adacd5111975a84d24aa3454313815748135