[INFO] cloning repository https://github.com/jbyte/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbyte/chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbyte%2Fchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbyte%2Fchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26a560fc55c7d5f815923b9628295015f4d0cc47
[INFO] checking jbyte/chip8 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbyte%2Fchip8" "/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/jbyte/chip8 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jbyte/chip8
[INFO] finished tweaking git repo https://github.com/jbyte/chip8
[INFO] tweaked toml for git repo https://github.com/jbyte/chip8 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jbyte/chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7bfe69ae9dfc950de7d858e588c6e20e34508218398ca1da483fa6e3aa3be5bc
[INFO] running `Command { std: "docker" "start" "-a" "7bfe69ae9dfc950de7d858e588c6e20e34508218398ca1da483fa6e3aa3be5bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bfe69ae9dfc950de7d858e588c6e20e34508218398ca1da483fa6e3aa3be5bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bfe69ae9dfc950de7d858e588c6e20e34508218398ca1da483fa6e3aa3be5bc", kill_on_drop: false }`
[INFO] [stdout] 7bfe69ae9dfc950de7d858e588c6e20e34508218398ca1da483fa6e3aa3be5bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "RUSTUP_TOOLCHAIN=3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc12d2aea689a210eca8793b95672ccd20c322d59dc664eba927fa29f1a5bd46
[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" "fc12d2aea689a210eca8793b95672ccd20c322d59dc664eba927fa29f1a5bd46", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking nom v2.2.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `chain`: please use [`do_parse!`](macro.do_parse.html) instead
[INFO] [stdout]   --> src/debugger/command.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / named!(
[INFO] [stdout] 25 | |     command<Command>,
[INFO] [stdout] 26 | |     chain!(
[INFO] [stdout] 27 | |         c: alt_complete!(
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |             eof!(),
[INFO] [stdout] 32 | |         || c));
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `chain`: please use [`do_parse!`](macro.do_parse.html) instead
[INFO] [stdout]   --> src/debugger/command.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / named!(
[INFO] [stdout] 35 | |     step<Command>,
[INFO] [stdout] 36 | |     chain!(
[INFO] [stdout] 37 | |         alt_complete!(tag!("step") | tag!("s")) ~
[INFO] [stdout] 38 | |             count: opt!(preceded!(space, usize_parser)),
[INFO] [stdout] 39 | |         || Command::Step(count.unwrap_or(1))));
[INFO] [stdout]    | |_______________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/debugger/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_START`
[INFO] [stdout]  --> src/cpu/cpu.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const INTERPRETER_START: u32 = 0x000;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_END`
[INFO] [stdout]  --> src/cpu/cpu.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const INTERPRETER_END: u32 = 0x1FF;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_LENGTH`
[INFO] [stdout]  --> src/cpu/cpu.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_END`
[INFO] [stdout]   --> src/cpu/cpu.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const DATA_END: usize = 0xFFF;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_LENGTH`
[INFO] [stdout]   --> src/cpu/cpu.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu/cpu.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         stdin().read(&mut c);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `chain`: please use [`do_parse!`](macro.do_parse.html) instead
[INFO] [stdout]   --> src/debugger/command.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / named!(
[INFO] [stdout] 25 | |     command<Command>,
[INFO] [stdout] 26 | |     chain!(
[INFO] [stdout] 27 | |         c: alt_complete!(
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |             eof!(),
[INFO] [stdout] 32 | |         || c));
[INFO] [stdout]    | |_______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `chain`: please use [`do_parse!`](macro.do_parse.html) instead
[INFO] [stdout]   --> src/debugger/command.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / named!(
[INFO] [stdout] 35 | |     step<Command>,
[INFO] [stdout] 36 | |     chain!(
[INFO] [stdout] 37 | |         alt_complete!(tag!("step") | tag!("s")) ~
[INFO] [stdout] 38 | |             count: opt!(preceded!(space, usize_parser)),
[INFO] [stdout] 39 | |         || Command::Step(count.unwrap_or(1))));
[INFO] [stdout]    | |_______________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Cow`
[INFO] [stdout]  --> src/debugger/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Cow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_START`
[INFO] [stdout]  --> src/cpu/cpu.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const INTERPRETER_START: u32 = 0x000;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_END`
[INFO] [stdout]  --> src/cpu/cpu.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const INTERPRETER_END: u32 = 0x1FF;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INTERPRETER_LENGTH`
[INFO] [stdout]  --> src/cpu/cpu.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const INTERPRETER_LENGTH: u32 = INTERPRETER_END - INTERPRETER_START;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_END`
[INFO] [stdout]   --> src/cpu/cpu.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const DATA_END: usize = 0xFFF;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DATA_LENGTH`
[INFO] [stdout]   --> src/cpu/cpu.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const DATA_LENGTH: usize = DATA_END - DATA_START;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu/cpu.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         stdin().read(&mut c);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.34s
[INFO] running `Command { std: "docker" "inspect" "fc12d2aea689a210eca8793b95672ccd20c322d59dc664eba927fa29f1a5bd46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc12d2aea689a210eca8793b95672ccd20c322d59dc664eba927fa29f1a5bd46", kill_on_drop: false }`
[INFO] [stdout] fc12d2aea689a210eca8793b95672ccd20c322d59dc664eba927fa29f1a5bd46