[INFO] fetching crate untitled_os 0.1.0...
[INFO] testing untitled_os-0.1.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate untitled_os 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate untitled_os 0.1.0
[INFO] finished tweaking crates.io crate untitled_os 0.1.0
[INFO] tweaked toml for crates.io crate untitled_os 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate untitled_os 0.1.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate untitled_os 0.1.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uguid v2.2.0
[INFO] [stderr]   Downloaded ptr_meta v0.2.0
[INFO] [stderr]   Downloaded uefi-raw v0.5.0
[INFO] [stderr]   Downloaded ptr_meta_derive v0.2.0
[INFO] [stderr]   Downloaded ucs2 v0.3.2
[INFO] [stderr]   Downloaded uefi-services v0.23.0
[INFO] [stderr]   Downloaded uefi-macros v0.13.0
[INFO] [stderr]   Downloaded log v0.4.20
[INFO] [stderr]   Downloaded uefi v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6
[INFO] running `Command { std: "docker" "start" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling uguid v2.2.0
[INFO] [stderr]    Compiling bitflags v2.4.2
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ucs2 v0.3.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling ptr_meta_derive v0.2.0
[INFO] [stderr]    Compiling ptr_meta v0.2.0
[INFO] [stderr]    Compiling uefi-raw v0.5.0
[INFO] [stderr]    Compiling uefi-macros v0.13.0
[INFO] [stderr]    Compiling uefi v0.26.0
[INFO] [stderr]    Compiling uefi-services v0.23.0
[INFO] [stderr]    Compiling untitled_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `system_table` and `memory_map` are never read
[INFO] [stdout]   --> src/kernel/mod.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub(crate) struct KernelContext {
[INFO] [stdout]    |                   ------------- fields in this struct
[INFO] [stdout] 11 |     pub(crate) frame_buffer: FrameBuffer,
[INFO] [stdout] 12 |     pub(crate) system_table: SystemTable<Runtime>,
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub(crate) memory_map: MemoryMap<'static>,
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KernelContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant `NONE` is never used
[INFO] [stdout]   --> src/kernel/console/char_buffer.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl CharColors {
[INFO] [stdout]    | --------------- associated constant in this implementation
[INFO] [stdout] 11 |     const NONE: Self = Self {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `NOT_PRINTABLE_CHAR`, `NONE`, and `is_none` are never used
[INFO] [stdout]   --> src/kernel/console/char_buffer.rs:84:11
[INFO] [stdout]    |
[INFO] [stdout] 80 | impl PrintableChar {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     const NOT_PRINTABLE_CHAR: u8 = 0;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 85 |     const NONE: Self = Self(Self::NOT_PRINTABLE_CHAR);
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 86 |     const fn is_none(&self) -> bool {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OptionalColoredChar` is never constructed
[INFO] [stdout]    --> src/kernel/console/char_buffer.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct OptionalColoredChar {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `NONE` and `is_none` are never used
[INFO] [stdout]    --> src/kernel/console/char_buffer.rs:115:11
[INFO] [stdout]     |
[INFO] [stdout] 114 | impl OptionalColoredChar {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout] 115 |     const NONE: Self = Self {
[INFO] [stdout]     |           ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     const fn is_none(&self) -> bool {
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX_WIDTH`, `MAX_HEIGHT`, and `draw_char_if_some` are never used
[INFO] [stdout]    --> src/kernel/console/char_buffer.rs:134:11
[INFO] [stdout]     |
[INFO] [stdout] 133 | impl CharBuffer {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 134 |     const MAX_WIDTH: usize = Resolution::MAX_SUPPORTED.horizontal / CHAR_RESOLUTION.horizontal;
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 135 |     const MAX_HEIGHT: usize = Resolution::MAX_SUPPORTED.vertical / CHAR_RESOLUTION.vertical;
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 |     fn draw_char_if_some(&mut self, optional_char: OptionalColoredChar) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_pixel_if_visible` is never used
[INFO] [stdout]    --> src/kernel/native_graphics/mod.rs:123:19
[INFO] [stdout]     |
[INFO] [stdout] 107 | impl FrameBuffer {
[INFO] [stdout]     | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub(crate) fn get_pixel_if_visible(&self, position: PixelPosition) -> Option<Pixel> {
[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/release/deps/rustcZT7fiR/symbols.o" "<1 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/release/deps/{libuefi-6351b3cddf5880f2,libucs2-b2ddfc083e606ea6,libbit_field-9c681de28a69db87,liblog-86e3c549cc8af89e,libptr_meta-dc8a65af8779c869,libuefi_raw-b35ecdece9871254,libuguid-2a01cda856706621,libbitflags-e13e1966bb897eca}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libcore-*,libcompiler_builtins-*}.rlib" "-L" "/opt/rustwide/target/release/deps/rustcZT7fiR/raw-dylibs" "-Wl,-Bdynamic" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/release/deps/untitled_os-c2e41cd588b33e30" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-Wl,--strip-all" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: undefined symbol: main
[INFO] [stdout]           >>> referenced by /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o:(_start)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: __libc_start_main
[INFO] [stdout]           >>> referenced by /usr/lib/gcc/x86_64-linux-gnu/15/../../../x86_64-linux-gnu/Scrt1.o:(_start)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: rust_eh_personality
[INFO] [stdout]           >>> referenced by core.df12db4294e9bfd3-cgu.0
[INFO] [stdout]           >>>               core-c7c41120a6de2743.core.df12db4294e9bfd3-cgu.0.rcgu.o:(DW.ref.rust_eh_personality) in archive /opt/rustwide/rustup-home/toolchains/1.99.0-beta.8-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c7c41120a6de2743.rlib
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `untitled_os` (bin "untitled_os") due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6", kill_on_drop: false }`
[INFO] [stdout] ef5d9a13d5ad5002a382f64d433c0758addc2c87c0fdad246aafc0c55c0f30c6
