[INFO] cloning repository https://github.com/paunstefan/chip8_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paunstefan/chip8_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaunstefan%2Fchip8_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaunstefan%2Fchip8_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 556abb65abb2034d68cb77b97141bde85e20dc07
[INFO] checking paunstefan/chip8_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaunstefan%2Fchip8_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paunstefan/chip8_rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paunstefan/chip8_rust
[INFO] finished tweaking git repo https://github.com/paunstefan/chip8_rust
[INFO] tweaked toml for git repo https://github.com/paunstefan/chip8_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/paunstefan/chip8_rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07b0738b1c4b841caf429cc72d47c0f9cd6ff2caf5ca282697601410e10b887f
[INFO] running `Command { std: "docker" "start" "-a" "07b0738b1c4b841caf429cc72d47c0f9cd6ff2caf5ca282697601410e10b887f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07b0738b1c4b841caf429cc72d47c0f9cd6ff2caf5ca282697601410e10b887f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07b0738b1c4b841caf429cc72d47c0f9cd6ff2caf5ca282697601410e10b887f", kill_on_drop: false }`
[INFO] [stdout] 07b0738b1c4b841caf429cc72d47c0f9cd6ff2caf5ca282697601410e10b887f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b2c310bed304479291d7b0de44f3d811d5330dfe1c2ae2b2bdc8dc05081b859
[INFO] running `Command { std: "docker" "start" "-a" "8b2c310bed304479291d7b0de44f3d811d5330dfe1c2ae2b2bdc8dc05081b859", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir/chip8)
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking sdl2_chip8 v0.1.0 (/opt/rustwide/workdir/sdl2_chip8)
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> sdl2_chip8/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Rng` is already imported here
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> sdl2_chip8/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Rng` is already imported here
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "8b2c310bed304479291d7b0de44f3d811d5330dfe1c2ae2b2bdc8dc05081b859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b2c310bed304479291d7b0de44f3d811d5330dfe1c2ae2b2bdc8dc05081b859", kill_on_drop: false }`
[INFO] [stdout] 8b2c310bed304479291d7b0de44f3d811d5330dfe1c2ae2b2bdc8dc05081b859
[INFO] checking paunstefan/chip8_rust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaunstefan%2Fchip8_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paunstefan/chip8_rust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paunstefan/chip8_rust
[INFO] finished tweaking git repo https://github.com/paunstefan/chip8_rust
[INFO] tweaked toml for git repo https://github.com/paunstefan/chip8_rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/paunstefan/chip8_rust 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 279a5a9c52922c76c8114f2a9ad1be47d55e6596742ecb9a2db993619d07d336
[INFO] running `Command { std: "docker" "start" "-a" "279a5a9c52922c76c8114f2a9ad1be47d55e6596742ecb9a2db993619d07d336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "279a5a9c52922c76c8114f2a9ad1be47d55e6596742ecb9a2db993619d07d336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279a5a9c52922c76c8114f2a9ad1be47d55e6596742ecb9a2db993619d07d336", kill_on_drop: false }`
[INFO] [stdout] 279a5a9c52922c76c8114f2a9ad1be47d55e6596742ecb9a2db993619d07d336
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4c6301c38686b1eae70279334dbfa2b77a6311161727da270ce3f050fee9385
[INFO] running `Command { std: "docker" "start" "-a" "e4c6301c38686b1eae70279334dbfa2b77a6311161727da270ce3f050fee9385", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir/chip8)
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking sdl2_chip8 v0.1.0 (/opt/rustwide/workdir/sdl2_chip8)
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> sdl2_chip8/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Rng` is already imported here
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> sdl2_chip8/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Rng` is already imported here
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.03s
[INFO] running `Command { std: "docker" "inspect" "e4c6301c38686b1eae70279334dbfa2b77a6311161727da270ce3f050fee9385", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c6301c38686b1eae70279334dbfa2b77a6311161727da270ce3f050fee9385", kill_on_drop: false }`
[INFO] [stdout] e4c6301c38686b1eae70279334dbfa2b77a6311161727da270ce3f050fee9385