Dec 18 07:03:06.405 INFO checking JosephFerano/rust_os against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 07:03:06.405 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/JosephFerano/rust_os:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 07:03:06.642 INFO [stdout] 09c6e5a11c1a95f7611e2308abf01d73a487700dcb7e91f769ae3c13721e2ec0
Dec 18 07:03:06.646 INFO running `"docker" "start" "-a" "09c6e5a11c1a95f7611e2308abf01d73a487700dcb7e91f769ae3c13721e2ec0"`
Dec 18 07:03:07.307 INFO [stderr]     Checking multiboot2 v0.7.1
Dec 18 07:03:07.801 INFO [stderr]     Checking first_os v0.1.0 (/opt/crater/workdir)
Dec 18 07:03:08.088 INFO [stderr] warning: method is never used: `clear_screen`
Dec 18 07:03:08.088 INFO [stderr]    --> src/vga_buffer.rs:121:5
Dec 18 07:03:08.088 INFO [stderr]     |
Dec 18 07:03:08.088 INFO [stderr] 121 |     pub fn clear_screen(&mut self) {
Dec 18 07:03:08.088 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:03:08.088 INFO [stderr]     |
Dec 18 07:03:08.088 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 07:03:08.088 INFO [stderr] error[E0152]: duplicate lang item found: `eh_personality`.
Dec 18 07:03:08.088 INFO [stderr]   --> src/lib.rs:63:1
Dec 18 07:03:08.088 INFO [stderr] 
Dec 18 07:03:08.088 INFO [stderr]    |
Dec 18 07:03:08.088 INFO [stderr] 63 | pub extern fn eh_personality() {}
Dec 18 07:03:08.088 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:03:08.088 INFO [stderr]    |
Dec 18 07:03:08.088 INFO [stderr]    = note: first defined in crate `panic_unwind`.
Dec 18 07:03:08.088 INFO [stderr] 
Dec 18 07:03:08.088 INFO [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
Dec 18 07:03:08.088 INFO [stderr]   --> src/lib.rs:66:1
Dec 18 07:03:08.088 INFO [stderr]    |
Dec 18 07:03:08.088 INFO [stderr] 66 | / pub extern fn panic(info : &PanicInfo) -> ! {
Dec 18 07:03:08.088 INFO [stderr] 67 | |     let mut writer = Writer::new();
Dec 18 07:03:08.088 INFO [stderr] 68 | |     writeln!(writer, "{}", info);
Dec 18 07:03:08.088 INFO [stderr] 69 | |     loop{}
Dec 18 07:03:08.088 INFO [stderr] 70 | | }
Dec 18 07:03:08.088 INFO [stderr]    | |_^
Dec 18 07:03:08.088 INFO [stderr]    |
Dec 18 07:03:08.088 INFO [stderr]    = note: first defined in crate `std`.
Dec 18 07:03:08.088 INFO [stderr] 
Dec 18 07:03:08.089 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 18 07:03:08.089 INFO [stderr]   --> src/lib.rs:25:9
Dec 18 07:03:08.089 INFO [stderr]    |
Dec 18 07:03:08.090 INFO [stderr] 25 | /         writeln!(writer, "    start: 0x{:x}, end: 0x{:x}, size: {:x}",
Dec 18 07:03:08.092 INFO [stderr] 26 | |             area.start_address(),
Dec 18 07:03:08.092 INFO [stderr] 27 | |             area.end_address(),
Dec 18 07:03:08.092 INFO [stderr] 28 | |             area.size());
Dec 18 07:03:08.093 INFO [stderr]    | |_________________________^
Dec 18 07:03:08.093 INFO [stderr]    |
Dec 18 07:03:08.093 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 07:03:08.094 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:03:08.094 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 07:03:08.094 INFO [stderr] 
Dec 18 07:03:08.094 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 18 07:03:08.094 INFO [stderr]   --> src/lib.rs:36:9
Dec 18 07:03:08.094 INFO [stderr]    |
Dec 18 07:03:08.094 INFO [stderr] 36 | /         writeln!(writer, "    addr: 0x{:x}, size: 0x{:x}, flags: 0x{:x}",
Dec 18 07:03:08.094 INFO [stderr] 37 | |             section.start_address(),
Dec 18 07:03:08.094 INFO [stderr] 38 | |             section.size(),
Dec 18 07:03:08.094 INFO [stderr] 39 | |             section.flags());
Dec 18 07:03:08.094 INFO [stderr]    | |_____________________________^
Dec 18 07:03:08.094 INFO [stderr]    |
Dec 18 07:03:08.095 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:03:08.095 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 07:03:08.095 INFO [stderr] 
Dec 18 07:03:08.095 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 18 07:03:08.095 INFO [stderr]   --> src/lib.rs:48:5
Dec 18 07:03:08.095 INFO [stderr]    |
Dec 18 07:03:08.095 INFO [stderr] 48 |     writeln!(writer, "Kernel Start: 0x{:x}, Kernel End: 0x{:x}", kernel_start, kernel_end);
Dec 18 07:03:08.095 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:03:08.095 INFO [stderr]    |
Dec 18 07:03:08.095 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:03:08.095 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 07:03:08.095 INFO [stderr] 
Dec 18 07:03:08.096 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 18 07:03:08.096 INFO [stderr]   --> src/lib.rs:49:5
Dec 18 07:03:08.096 INFO [stderr]    |
Dec 18 07:03:08.096 INFO [stderr] 49 |     writeln!(writer, "Multiboot Start: 0x{:x}, Multiboot End: 0x{:x}", multiboot_start, multiboot_end);
Dec 18 07:03:08.096 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:03:08.096 INFO [stderr]    |
Dec 18 07:03:08.096 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:03:08.096 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 07:03:08.096 INFO [stderr] 
Dec 18 07:03:08.100 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 18 07:03:08.100 INFO [stderr]   --> src/lib.rs:68:5
Dec 18 07:03:08.100 INFO [stderr]    |
Dec 18 07:03:08.100 INFO [stderr] 68 |     writeln!(writer, "{}", info);
Dec 18 07:03:08.100 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:03:08.100 INFO [stderr]    |
Dec 18 07:03:08.100 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:03:08.100 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 07:03:08.100 INFO [stderr] 
Dec 18 07:03:08.207 INFO [stderr] error: aborting due to 2 previous errors
Dec 18 07:03:08.207 INFO [stderr] 
Dec 18 07:03:08.207 INFO [stderr] For more information about this error, try `rustc --explain E0152`.
Dec 18 07:03:08.210 INFO [stderr] error: Could not compile `first_os`.
Dec 18 07:03:08.210 INFO [stderr] 
Dec 18 07:03:08.210 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 07:03:08.489 INFO running `"docker" "inspect" "09c6e5a11c1a95f7611e2308abf01d73a487700dcb7e91f769ae3c13721e2ec0"`
Dec 18 07:03:08.608 INFO running `"docker" "rm" "-f" "09c6e5a11c1a95f7611e2308abf01d73a487700dcb7e91f769ae3c13721e2ec0"`
Dec 18 07:03:08.712 INFO [stdout] 09c6e5a11c1a95f7611e2308abf01d73a487700dcb7e91f769ae3c13721e2ec0