[INFO] cloning repository sbutler2901/rustos
[INFO] running `"git" "clone" "--bare" "git://github.com/sbutler2901/rustos.git" "work/cache/sources/gh/sbutler2901/rustos"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/sbutler2901/rustos'...
[INFO] running `"git" "clone" "work/cache/sources/gh/sbutler2901/rustos" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sbutler2901/rustos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sbutler2901/rustos'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sbutler2901/rustos" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sbutler2901/rustos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sbutler2901/rustos'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f95983c7a8f09de888b9fecaa377c473a5867199
[INFO] sha for GitHub repo sbutler2901/rustos: f95983c7a8f09de888b9fecaa377c473a5867199
[INFO] validating manifest of sbutler2901/rustos on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sbutler2901/rustos on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sbutler2901/rustos
[INFO] finished frobbing sbutler2901/rustos
[INFO] frobbed toml for sbutler2901/rustos written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sbutler2901/rustos/Cargo.toml
[INFO] started frobbing sbutler2901/rustos
[INFO] finished frobbing sbutler2901/rustos
[INFO] frobbed toml for sbutler2901/rustos written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sbutler2901/rustos/Cargo.toml
[INFO] crate sbutler2901/rustos already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded x86_64 v0.4.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sbutler2901/rustos against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-6/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sbutler2901/rustos:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] b46998266fcbcd9ec0a2c9038b338fb6cd55349ba3a0f1e9b5c1fc00e147414e
[INFO] running `"docker" "start" "-a" "b46998266fcbcd9ec0a2c9038b338fb6cd55349ba3a0f1e9b5c1fc00e147414e"`
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling cpuio v0.2.0
[INFO] [stderr]    Compiling x86_64 v0.2.11
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling pic8259_simple v0.1.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]    Compiling bootloader v0.3.12
[INFO] [stderr]    Compiling uart_16550 v0.1.0
[INFO] [stderr]    Compiling x86_64 v0.4.1
[INFO] [stderr]    Compiling rust_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/vga_buffer.rs:92:21
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 0x20...0x7e | b'\n' => self.write_byte(byte),
[INFO] [stderr]    |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.7.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_exception_divide_by_zero-53a80149aa2ed883.test_exception_divide_by_zero.1f6it6cw-cgu.5.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-exception-divide-by-zero.rs:40: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_panic-a406ec32222e100b.test_panic.7vwo68r6-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_panic-a406ec32222e100b.test_panic.7vwo68r6-cgu.1.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_panic-a406ec32222e100b" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_panic-a406ec32222e100b.test_panic.7vwo68r6-cgu.1.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-panic.rs:13: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.8.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_interrupt_syscall-250f1bdd331ecd69.test_interrupt_syscall.abat9rjx-cgu.3.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-interrupt-syscall.rs:43: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.7.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_exception_double_fault_stack_overflow-1101185759878b25.test_exception_double_fault_stack_overflow.701go2mk-cgu.5.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-exception-double-fault-stack-overflow.rs:44: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_basic_boot-ab3c6d2a54536509.test_basic_boot.8d1n5m5e-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_basic_boot-ab3c6d2a54536509.test_basic_boot.8d1n5m5e-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_basic_boot-ab3c6d2a54536509.test_basic_boot.8d1n5m5e-cgu.2.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_basic_boot-ab3c6d2a54536509" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_basic_boot-ab3c6d2a54536509.test_basic_boot.8d1n5m5e-cgu.0.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-basic-boot.rs:16: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/rust_os-c11abc8dc018bf65.rust_os.e7ifgtqv-cgu.3.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/<::bootloader::entry_point macros>:2: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.7.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_exception_page_fault-b92ee4749d5f6e92.test_exception_page_fault.5i9uy0a4-cgu.2.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-exception-page-fault.rs:41: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.7.rcgu.o" "-o" "/opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librust_os-a474bbc6fb36872d.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-610c1d25ba0c7658.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-7b62f390e0bf1e51.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libuart_16550-6d3a5466b8c0a933.rlib" "/opt/crater/target/debug/deps/libspin-efe68d38fb3a8c35.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libbootloader-9abdd999418a67b7.rlib" "/opt/crater/target/debug/deps/libx86_64-4d5520af6c05d4f1.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/liblazy_static-696c3baccaf71403.rlib" "/opt/crater/target/debug/deps/libspin-0fef1dce54f42d83.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2d032fe7d4e1e163.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-622fdce0dc084cba.rlib" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/test_exception_breakpoint-65dd1725f91570fe.test_exception_breakpoint.ar3r77n3-cgu.1.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/bin/test-exception-breakpoint.rs:42: multiple definition of `_start'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x20): undefined reference to `main'
[INFO] [stderr]           /usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
[INFO] [stderr]           (.text+0x26): undefined reference to `__libc_start_main'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b46998266fcbcd9ec0a2c9038b338fb6cd55349ba3a0f1e9b5c1fc00e147414e"`
[INFO] running `"docker" "rm" "-f" "b46998266fcbcd9ec0a2c9038b338fb6cd55349ba3a0f1e9b5c1fc00e147414e"`
[INFO] [stdout] b46998266fcbcd9ec0a2c9038b338fb6cd55349ba3a0f1e9b5c1fc00e147414e