[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 master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkanakshilledar%2Fkash_os" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-5-tc1/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-5-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kanakshilledar/kash_os on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kanakshilledar/kash_os 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a362f37df3b90bd69aded92de4f2c6f076985a3e11d39296919ba3785a5b9fd0 [INFO] running `Command { std: "docker" "start" "-a" "a362f37df3b90bd69aded92de4f2c6f076985a3e11d39296919ba3785a5b9fd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a362f37df3b90bd69aded92de4f2c6f076985a3e11d39296919ba3785a5b9fd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a362f37df3b90bd69aded92de4f2c6f076985a3e11d39296919ba3785a5b9fd0", kill_on_drop: false }` [INFO] [stdout] a362f37df3b90bd69aded92de4f2c6f076985a3e11d39296919ba3785a5b9fd0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0d3bd35d12e5459c1467da80137aedd17be66dbd308104dceabedb837ffd4e74 [INFO] running `Command { std: "docker" "start" "-a" "0d3bd35d12e5459c1467da80137aedd17be66dbd308104dceabedb837ffd4e74", 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: struct `ColorCode` is never constructed [INFO] [stdout] --> src/vga_buffer.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 27 | struct ColorCode(u8); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/vga_buffer.rs:30:8 [INFO] [stdout] | [INFO] [stdout] 29 | impl ColorCode { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 30 | fn new(foreground: Color, background: Color) -> ColorCode { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ScreenChar` is never constructed [INFO] [stdout] --> src/vga_buffer.rs:37:8 [INFO] [stdout] | [INFO] [stdout] 37 | struct ScreenChar { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `BUFFER_HEIGHT` is never used [INFO] [stdout] --> src/vga_buffer.rs:42:7 [INFO] [stdout] | [INFO] [stdout] 42 | const BUFFER_HEIGHT: usize = 25; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant `BUFFER_WIDTH` is never used [INFO] [stdout] --> src/vga_buffer.rs:43:7 [INFO] [stdout] | [INFO] [stdout] 43 | const BUFFER_WIDTH: usize = 80; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Buffer` is never constructed [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 `Writer` is never constructed [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: methods `write_byte` and `new_line` are never used [INFO] [stdout] --> src/vga_buffer.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 57 | impl Writer { [INFO] [stdout] | ----------- methods in this implementation [INFO] [stdout] 58 | pub fn write_byte(&mut self, byte: u8) { [INFO] [stdout] | ^^^^^^^^^^ [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" "/tmp/rustc7eCFM2/symbols.o" "<1 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libcore-*,libcompiler_builtins-*}.rlib" "-L" "/tmp/rustc7eCFM2/raw-dylibs" "-Wl,-Bdynamic" "-B/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/kash_os-8f0c3590f5b82ba9" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs" [INFO] [stdout] = note: some arguments are omitted. use `--verbose` to show all linker arguments [INFO] [stdout] = note: rust-lld: error: duplicate symbol: _start [INFO] [stdout] >>> defined at /usr/lib/gcc/x86_64-linux-gnu/13/../../../x86_64-linux-gnu/Scrt1.o:(_start) [INFO] [stdout] >>> defined at main.rs:12 (src/main.rs:12) [INFO] [stdout] >>> /opt/rustwide/target/debug/deps/kash_os-8f0c3590f5b82ba9.kash_os.189eafe69ffc244-cgu.0.rcgu.o:(.text._start+0x0) [INFO] [stdout] collect2: error: ld returned 1 exit status [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kash_os` (bin "kash_os") due to 1 previous error; 8 warnings emitted [INFO] running `Command { std: "docker" "inspect" "0d3bd35d12e5459c1467da80137aedd17be66dbd308104dceabedb837ffd4e74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0d3bd35d12e5459c1467da80137aedd17be66dbd308104dceabedb837ffd4e74", kill_on_drop: false }` [INFO] [stdout] 0d3bd35d12e5459c1467da80137aedd17be66dbd308104dceabedb837ffd4e74