[INFO] cloning repository https://github.com/kariy/os-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kariy/os-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkariy%2Fos-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkariy%2Fos-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f65d59f67aad62e45d5e32c9d4623c383bcf4e99
[INFO] testing kariy/os-in-rust against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkariy%2Fos-in-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/kariy/os-in-rust
[INFO] finished tweaking git repo https://github.com/kariy/os-in-rust
[INFO] tweaked toml for git repo https://github.com/kariy/os-in-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kariy/os-in-rust on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kariy/os-in-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] [stderr]   Downloaded bootloader v0.9.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60a96926baaf0f5eb40e9e96e1268991c6212dde3bf73e9c181088c5cd428636
[INFO] running `Command { std: "docker" "start" "-a" "60a96926baaf0f5eb40e9e96e1268991c6212dde3bf73e9c181088c5cd428636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60a96926baaf0f5eb40e9e96e1268991c6212dde3bf73e9c181088c5cd428636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60a96926baaf0f5eb40e9e96e1268991c6212dde3bf73e9c181088c5cd428636", kill_on_drop: false }`
[INFO] [stdout] 60a96926baaf0f5eb40e9e96e1268991c6212dde3bf73e9c181088c5cd428636
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62e95defa5287e9a61484f3c580226219b322e825df711b1732e69ff48e58acd
[INFO] running `Command { std: "docker" "start" "-a" "62e95defa5287e9a61484f3c580226219b322e825df711b1732e69ff48e58acd", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.29
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling os-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this operation will panic at runtime
[INFO] [stdout]   --> src/vga_buffer.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 self.buffer.chars[row][col].write(char);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 25 but the index is 79
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(unconditional_panic)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/vga_buffer.rs:109:29
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn clear_row(&mut self, row: usize) {}
[INFO] [stdout]     |                             ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os-in-rust` (bin "os-in-rust") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "62e95defa5287e9a61484f3c580226219b322e825df711b1732e69ff48e58acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e95defa5287e9a61484f3c580226219b322e825df711b1732e69ff48e58acd", kill_on_drop: false }`
[INFO] [stdout] 62e95defa5287e9a61484f3c580226219b322e825df711b1732e69ff48e58acd