[INFO] cloning repository https://github.com/EdenEast/rust-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EdenEast/rust-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdenEast%2Frust-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdenEast%2Frust-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 745e983018a5f0b8a7a09ed6140d7e48c25818f1
[INFO] checking EdenEast/rust-8 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdenEast%2Frust-8" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EdenEast/rust-8 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EdenEast/rust-8
[INFO] finished tweaking git repo https://github.com/EdenEast/rust-8
[INFO] tweaked toml for git repo https://github.com/EdenEast/rust-8 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/EdenEast/rust-8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03b35f6bf94a114f3ef2b866d2a1061fb95b53661649f03b76b4b650a963bb54
[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" "03b35f6bf94a114f3ef2b866d2a1061fb95b53661649f03b76b4b650a963bb54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b35f6bf94a114f3ef2b866d2a1061fb95b53661649f03b76b4b650a963bb54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b35f6bf94a114f3ef2b866d2a1061fb95b53661649f03b76b4b650a963bb54", kill_on_drop: false }`
[INFO] [stdout] 03b35f6bf94a114f3ef2b866d2a1061fb95b53661649f03b76b4b650a963bb54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52fb6d5a4736808c79c1a8ee484d5af470c2881b3139e6d9be30e5daaab2bf6d
[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" "52fb6d5a4736808c79c1a8ee484d5af470c2881b3139e6d9be30e5daaab2bf6d", kill_on_drop: false }`
[INFO] [stderr]     Checking rust8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RAM_SIZE`
[INFO] [stdout]  --> src/cpu.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ram::{Ram, RAM_SIZE};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RAM_SIZE`
[INFO] [stdout]  --> src/cpu.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ram::{Ram, RAM_SIZE};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/cpu.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let addr = self.reg.pc;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `optcode`
[INFO] [stdout]   --> src/cpu.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let optcode = self.get_opcode();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_optcode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ram.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(ram: [u8; RAM_SIZE]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/ram.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn load(&mut self, addr: u16, value: u8) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/cpu.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let addr = self.reg.pc;
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `optcode`
[INFO] [stdout]   --> src/cpu.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let optcode = self.get_opcode();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_optcode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ram.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(ram: [u8; RAM_SIZE]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/ram.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn load(&mut self, addr: u16, value: u8) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "52fb6d5a4736808c79c1a8ee484d5af470c2881b3139e6d9be30e5daaab2bf6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fb6d5a4736808c79c1a8ee484d5af470c2881b3139e6d9be30e5daaab2bf6d", kill_on_drop: false }`
[INFO] [stdout] 52fb6d5a4736808c79c1a8ee484d5af470c2881b3139e6d9be30e5daaab2bf6d