[INFO] cloning repository https://github.com/kanakshilledar/kash_os [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kanakshilledar/kash_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkanakshilledar%2Fkash_os", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkanakshilledar%2Fkash_os'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 15626fb04eb80ef1d1e653a865e11d7def3e2341 [INFO] testing kanakshilledar/kash_os against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkanakshilledar%2Fkash_os" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kanakshilledar/kash_os on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-0/source/.cargo/config.toml [INFO] started tweaking git repo https://github.com/kanakshilledar/kash_os [INFO] finished tweaking git repo https://github.com/kanakshilledar/kash_os [INFO] tweaked toml for git repo https://github.com/kanakshilledar/kash_os written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/kanakshilledar/kash_os already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bootloader v0.9.22 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 088f05ccbc4250692695b25791ff30c868f9921fc234cc6192d563dd7b2bff3c [INFO] running `Command { std: "docker" "start" "-a" "088f05ccbc4250692695b25791ff30c868f9921fc234cc6192d563dd7b2bff3c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "088f05ccbc4250692695b25791ff30c868f9921fc234cc6192d563dd7b2bff3c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "088f05ccbc4250692695b25791ff30c868f9921fc234cc6192d563dd7b2bff3c", kill_on_drop: false }` [INFO] [stdout] 088f05ccbc4250692695b25791ff30c868f9921fc234cc6192d563dd7b2bff3c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 9cfc4e527ed656f744ee32de688fd5eebc1ac003fa525ff67e2b125324dc72b2 [INFO] running `Command { std: "docker" "start" "-a" "9cfc4e527ed656f744ee32de688fd5eebc1ac003fa525ff67e2b125324dc72b2", kill_on_drop: false }` [INFO] [stderr] Compiling bootloader v0.9.22 [INFO] [stderr] Compiling kash_os v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/vga_buffer.rs:30:8 [INFO] [stdout] | [INFO] [stdout] 30 | fn new(foreground: Color, background: Color) -> ColorCode { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `BUFFER_HEIGHT` [INFO] [stdout] --> src/vga_buffer.rs:42:1 [INFO] [stdout] | [INFO] [stdout] 42 | const BUFFER_HEIGHT: usize = 25; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `BUFFER_WIDTH` [INFO] [stdout] --> src/vga_buffer.rs:43:1 [INFO] [stdout] | [INFO] [stdout] 43 | const BUFFER_WIDTH: usize = 80; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Buffer` [INFO] [stdout] --> src/vga_buffer.rs:46:8 [INFO] [stdout] | [INFO] [stdout] 46 | struct Buffer { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Writer` [INFO] [stdout] --> src/vga_buffer.rs:51:12 [INFO] [stdout] | [INFO] [stdout] 51 | pub struct Writer { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `write_byte` [INFO] [stdout] --> src/vga_buffer.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn write_byte(&mut self, byte: u8) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new_line` [INFO] [stdout] --> src/vga_buffer.rs:79:8 [INFO] [stdout] | [INFO] [stdout] 79 | fn new_line(&mut self) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: linking with `cc` failed: exit status: 1 [INFO] [stdout] | [INFO] [stdout] = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.7.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-fb6b78ac543a58ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1d1f2d1bec6f51b8.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-acf5ff6e9595d982.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/kash_os-042922315190db0d" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs" [INFO] [stdout] = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/kash_os-042922315190db0d.kash_os.44c6c704-cgu.7.rcgu.o: in function `_start': [INFO] [stdout] /opt/rustwide/workdir/src/main.rs:12: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here [INFO] [stdout] /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start': [INFO] [stdout] (.text+0x16): undefined reference to `__libc_csu_fini' [INFO] [stdout] /usr/bin/ld: (.text+0x1d): undefined reference to `__libc_csu_init' [INFO] [stdout] /usr/bin/ld: (.text+0x24): undefined reference to `main' [INFO] [stdout] /usr/bin/ld: (.text+0x2a): undefined reference to `__libc_start_main' [INFO] [stdout] collect2: error: ld returned 1 exit status [INFO] [stdout] [INFO] [stdout] = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified [INFO] [stdout] = note: use the `-l` flag to specify native libraries to link [INFO] [stdout] = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kash_os` due to 2 previous errors; 7 warnings emitted [INFO] running `Command { std: "docker" "inspect" "9cfc4e527ed656f744ee32de688fd5eebc1ac003fa525ff67e2b125324dc72b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cfc4e527ed656f744ee32de688fd5eebc1ac003fa525ff67e2b125324dc72b2", kill_on_drop: false }` [INFO] [stdout] 9cfc4e527ed656f744ee32de688fd5eebc1ac003fa525ff67e2b125324dc72b2