[INFO] cloning repository https://github.com/kaminarifox/rusty_chip_eight
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaminarifox/rusty_chip_eight" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaminarifox%2Frusty_chip_eight", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaminarifox%2Frusty_chip_eight'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73e697443331f9b72a88e1548ad3791f41d68ed6
[INFO] checking kaminarifox/rusty_chip_eight against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaminarifox%2Frusty_chip_eight" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kaminarifox/rusty_chip_eight on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kaminarifox/rusty_chip_eight
[INFO] finished tweaking git repo https://github.com/kaminarifox/rusty_chip_eight
[INFO] tweaked toml for git repo https://github.com/kaminarifox/rusty_chip_eight written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/kaminarifox/rusty_chip_eight already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 4ef1e0357a086ac760d0aa0b608be6bb6908b0baf1f75a3cf6b40d4c1edc10df
[INFO] running `Command { std: "docker" "start" "-a" "4ef1e0357a086ac760d0aa0b608be6bb6908b0baf1f75a3cf6b40d4c1edc10df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ef1e0357a086ac760d0aa0b608be6bb6908b0baf1f75a3cf6b40d4c1edc10df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef1e0357a086ac760d0aa0b608be6bb6908b0baf1f75a3cf6b40d4c1edc10df", kill_on_drop: false }`
[INFO] [stdout] 4ef1e0357a086ac760d0aa0b608be6bb6908b0baf1f75a3cf6b40d4c1edc10df
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f38e86bca22425baadda8f50f438576da1d3ce0d1a5d107fdd4e8837e8fd5af
[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" "6f38e86bca22425baadda8f50f438576da1d3ce0d1a5d107fdd4e8837e8fd5af", kill_on_drop: false }`
[INFO] [stderr]     Checking rusty_chip_eight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::interpreter::Cpu`
[INFO] [stdout]  --> src/memory.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::interpreter::Cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interpreter::Cpu`
[INFO] [stdout]  --> src/memory.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::interpreter::Cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/memory.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut high_bits = (self.ram[self.pc] as u16) << 8;
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_addr`
[INFO] [stdout]   --> src/interpreter.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn get_addr(opcode: &u16) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i_reg`
[INFO] [stdout]   --> src/interpreter.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     i_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i`
[INFO] [stdout]    --> src/interpreter.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn set_i(&mut self, opcode: &u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]  --> src/memory.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     stack: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/memory.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut high_bits = (self.ram[self.pc] as u16) << 8;
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_addr`
[INFO] [stdout]   --> src/interpreter.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn get_addr(opcode: &u16) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i_reg`
[INFO] [stdout]   --> src/interpreter.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     i_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i`
[INFO] [stdout]    --> src/interpreter.rs:148:8
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn set_i(&mut self, opcode: &u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]  --> src/memory.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     stack: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/memory.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         file.read_to_end(&mut self.ram);
[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: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/memory.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         file.read_to_end(&mut self.ram);
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "6f38e86bca22425baadda8f50f438576da1d3ce0d1a5d107fdd4e8837e8fd5af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f38e86bca22425baadda8f50f438576da1d3ce0d1a5d107fdd4e8837e8fd5af", kill_on_drop: false }`
[INFO] [stdout] 6f38e86bca22425baadda8f50f438576da1d3ce0d1a5d107fdd4e8837e8fd5af