[INFO] cloning repository https://github.com/JosephFerano/rust_os [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JosephFerano/rust_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Frust_os", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Frust_os'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0502adec20e78e6019d68a023520c0c30f3fcff8 [INFO] testing JosephFerano/rust_os against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephFerano%2Frust_os" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JosephFerano/rust_os on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JosephFerano/rust_os [INFO] finished tweaking git repo https://github.com/JosephFerano/rust_os [INFO] tweaked toml for git repo https://github.com/JosephFerano/rust_os written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/JosephFerano/rust_os already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 35b9dbb87139c4b23458ad8bdfcc26bcbefd1f7db3a70af3f5c63c14a9b52e28 [INFO] running `Command { std: "docker" "start" "-a" "35b9dbb87139c4b23458ad8bdfcc26bcbefd1f7db3a70af3f5c63c14a9b52e28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "35b9dbb87139c4b23458ad8bdfcc26bcbefd1f7db3a70af3f5c63c14a9b52e28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35b9dbb87139c4b23458ad8bdfcc26bcbefd1f7db3a70af3f5c63c14a9b52e28", kill_on_drop: false }` [INFO] [stdout] 35b9dbb87139c4b23458ad8bdfcc26bcbefd1f7db3a70af3f5c63c14a9b52e28 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ef7641285003f373a6643195d39c43068e291daf24e3f828e506541288b48c2a [INFO] running `Command { std: "docker" "start" "-a" "ef7641285003f373a6643195d39c43068e291daf24e3f828e506541288b48c2a", kill_on_drop: false }` [INFO] [stderr] Compiling bitflags v1.0.4 [INFO] [stderr] Compiling volatile v0.2.4 [INFO] [stderr] Compiling multiboot2 v0.7.1 [INFO] [stderr] Compiling first_os v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(lang_items)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/vga_buffer.rs:89:21 [INFO] [stdout] | [INFO] [stdout] 89 | 0x20...0x7e | b'\n' => self.write_byte(byte), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `first_os` due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "ef7641285003f373a6643195d39c43068e291daf24e3f828e506541288b48c2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef7641285003f373a6643195d39c43068e291daf24e3f828e506541288b48c2a", kill_on_drop: false }` [INFO] [stdout] ef7641285003f373a6643195d39c43068e291daf24e3f828e506541288b48c2a