[INFO] cloning repository https://github.com/sturdy-robot/sturdychip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sturdy-robot/sturdychip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsturdy-robot%2Fsturdychip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsturdy-robot%2Fsturdychip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2c11a0c100ed67c162a77d0ddfb3cfc4acbfba4
[INFO] checking sturdy-robot/sturdychip8 against master#06194cadcd0948a7100b46737f61e82b8c00d632 for pr-117967-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsturdy-robot%2Fsturdychip8" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sturdy-robot/sturdychip8 on toolchain 06194cadcd0948a7100b46737f61e82b8c00d632
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+06194cadcd0948a7100b46737f61e82b8c00d632" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sturdy-robot/sturdychip8
[INFO] finished tweaking git repo https://github.com/sturdy-robot/sturdychip8
[INFO] tweaked toml for git repo https://github.com/sturdy-robot/sturdychip8 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sturdy-robot/sturdychip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+06194cadcd0948a7100b46737f61e82b8c00d632" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking sturdy-robot/sturdychip8 against try#6e8eb3d1ba265821f8cc640134ce012d1ff211d8 for pr-117967-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsturdy-robot%2Fsturdychip8" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sturdy-robot/sturdychip8 on toolchain 6e8eb3d1ba265821f8cc640134ce012d1ff211d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6e8eb3d1ba265821f8cc640134ce012d1ff211d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sturdy-robot/sturdychip8
[INFO] finished tweaking git repo https://github.com/sturdy-robot/sturdychip8
[INFO] tweaked toml for git repo https://github.com/sturdy-robot/sturdychip8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sturdy-robot/sturdychip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6e8eb3d1ba265821f8cc640134ce012d1ff211d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6e8eb3d1ba265821f8cc640134ce012d1ff211d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b1560e6dbbcbcc6988e6ce68d3bad32de37e01b7d5de145dab11a3f932ad615
[INFO] running `Command { std: "docker" "start" "-a" "1b1560e6dbbcbcc6988e6ce68d3bad32de37e01b7d5de145dab11a3f932ad615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b1560e6dbbcbcc6988e6ce68d3bad32de37e01b7d5de145dab11a3f932ad615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b1560e6dbbcbcc6988e6ce68d3bad32de37e01b7d5de145dab11a3f932ad615", kill_on_drop: false }`
[INFO] [stdout] 1b1560e6dbbcbcc6988e6ce68d3bad32de37e01b7d5de145dab11a3f932ad615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6e8eb3d1ba265821f8cc640134ce012d1ff211d8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f82fb008b22c6c5ba1ceae8f4886d987c60c83efaaf3b13cf7f9b5b52f5d590b
[INFO] running `Command { std: "docker" "start" "-a" "f82fb008b22c6c5ba1ceae8f4886d987c60c83efaaf3b13cf7f9b5b52f5d590b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking sturdychip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rom_data`
[INFO] [stdout]  --> src/core/rom.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let rom_data = fs::read(filename).expect("Unable to read file contents");
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rom_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cpu` is never constructed
[INFO] [stdout]  --> src/core/cpu.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Cpu {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `v_r`, `pc`, and `i` are never read
[INFO] [stdout]  --> src/core/registers.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Registers {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 2 |     pub v_r: [u8; 16],
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 3 |     pub pc: u16,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 4 |     pub i: u16,
[INFO] [stdout]   |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]  --> src/core/instructions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn decode(cpu: &mut Cpu) {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_op0x` is never used
[INFO] [stdout]   --> src/core/instructions.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn decode_op0x(cpu: &mut Cpu) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_op8x` is never used
[INFO] [stdout]   --> src/core/instructions.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn decode_op8x(cpu: &mut Cpu) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_rom` is never used
[INFO] [stdout]  --> src/core/rom.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn read_rom(filename: &str) {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rom_data`
[INFO] [stdout]  --> src/core/rom.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let rom_data = fs::read(filename).expect("Unable to read file contents");
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rom_data`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cpu` is never constructed
[INFO] [stdout]  --> src/core/cpu.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Cpu {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `v_r`, `pc`, and `i` are never read
[INFO] [stdout]  --> src/core/registers.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Registers {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 2 |     pub v_r: [u8; 16],
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 3 |     pub pc: u16,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 4 |     pub i: u16,
[INFO] [stdout]   |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]  --> src/core/instructions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn decode(cpu: &mut Cpu) {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_op0x` is never used
[INFO] [stdout]   --> src/core/instructions.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn decode_op0x(cpu: &mut Cpu) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_op8x` is never used
[INFO] [stdout]   --> src/core/instructions.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn decode_op8x(cpu: &mut Cpu) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_rom` is never used
[INFO] [stdout]  --> src/core/rom.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn read_rom(filename: &str) {
[INFO] [stdout]   |    ^^^^^^^^
[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` profile [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "f82fb008b22c6c5ba1ceae8f4886d987c60c83efaaf3b13cf7f9b5b52f5d590b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82fb008b22c6c5ba1ceae8f4886d987c60c83efaaf3b13cf7f9b5b52f5d590b", kill_on_drop: false }`
[INFO] [stdout] f82fb008b22c6c5ba1ceae8f4886d987c60c83efaaf3b13cf7f9b5b52f5d590b