[INFO] cloning repository https://github.com/CmPunkLP/OS2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CmPunkLP/OS2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCmPunkLP%2FOS2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCmPunkLP%2FOS2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39ad79fbe5a7ec00fbc0eafa27b8c3f43db3489f
[INFO] testing CmPunkLP/OS2 against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCmPunkLP%2FOS2" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CmPunkLP/OS2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/CmPunkLP/OS2
[INFO] finished tweaking git repo https://github.com/CmPunkLP/OS2
[INFO] tweaked toml for git repo https://github.com/CmPunkLP/OS2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CmPunkLP/OS2 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bootloader v0.9.23
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ab716fd11b3915fde99eab15f03b5358e7ab3dd9d706b32f0bdb79cb41f193f
[INFO] running `Command { std: "docker" "start" "-a" "7ab716fd11b3915fde99eab15f03b5358e7ab3dd9d706b32f0bdb79cb41f193f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ab716fd11b3915fde99eab15f03b5358e7ab3dd9d706b32f0bdb79cb41f193f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab716fd11b3915fde99eab15f03b5358e7ab3dd9d706b32f0bdb79cb41f193f", kill_on_drop: false }`
[INFO] [stdout] 7ab716fd11b3915fde99eab15f03b5358e7ab3dd9d706b32f0bdb79cb41f193f
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d7107e9d3b7276d521e15103139d29541b1a56c6a00f623dc6be312792b0216
[INFO] running `Command { std: "docker" "start" "-a" "4d7107e9d3b7276d521e15103139d29541b1a56c6a00f623dc6be312792b0216", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.23
[INFO] [stderr]    Compiling unios v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `White`
[INFO] [stdout]   --> src/main.rs:10:48
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::vga_buf::Color::{Black, LightGreen, White};
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Left` is never constructed
[INFO] [stdout]   --> src/vga_buf.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Alignment {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 13 |     Left, 
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/vga_buf.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum Color {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 19 |     Black,      
[INFO] [stdout] 20 |     DarkBlue,   
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 21 |     Green,      
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     Blue,       
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     Red,        
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 24 |     Purple,     
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     Brown,      
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 26 |     LightGrey,  
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 27 |     DarkGrey,   
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     BrightBlue, 
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 29 |     LightGreen, 
[INFO] [stdout] 30 |     LightBlue,  
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 31 |     LightRed,   
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 32 |     Pink,      
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     Yellow,     
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 34 |     White       
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_hello_world` is never used
[INFO] [stdout]    --> src/vga_buf.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 56  | impl Screen {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     pub fn print_hello_world(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcSVXlQ1/symbols.o" "/opt/rustwide/target/debug/deps/unios-1b3a7312e48ac680.unios.7e86efedf84c5a81-cgu.0.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-0577018320f99037.rlib" "/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-193cf992125ccd4c.rlib" "/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-8e138eaf26ebb4a8.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/unios-1b3a7312e48ac680" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/unios-1b3a7312e48ac680.unios.7e86efedf84c5a81-cgu.0.rcgu.o: in function `_start':
[INFO] [stdout]           /opt/rustwide/workdir/src/main.rs:19: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stdout]           /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
[INFO] [stdout]           (.text+0x1b): undefined reference to `main'
[INFO] [stdout]           /usr/bin/ld: (.text+0x21): undefined reference to `__libc_start_main'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = note: 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; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unios` (bin "unios") due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4d7107e9d3b7276d521e15103139d29541b1a56c6a00f623dc6be312792b0216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d7107e9d3b7276d521e15103139d29541b1a56c6a00f623dc6be312792b0216", kill_on_drop: false }`
[INFO] [stdout] 4d7107e9d3b7276d521e15103139d29541b1a56c6a00f623dc6be312792b0216
