[INFO] cloning repository holmesmr/blog_os [INFO] running `"git" "clone" "--bare" "git://github.com/holmesmr/blog_os.git" "work/cache/sources/gh/holmesmr/blog_os"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/holmesmr/blog_os'... [INFO] running `"git" "clone" "work/cache/sources/gh/holmesmr/blog_os" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/holmesmr/blog_os"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/holmesmr/blog_os'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/holmesmr/blog_os" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/holmesmr/blog_os"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/holmesmr/blog_os'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4057c867ce29a8430ba3ce53fcc15f2fea3d30e5 [INFO] sha for GitHub repo holmesmr/blog_os: 4057c867ce29a8430ba3ce53fcc15f2fea3d30e5 [INFO] validating manifest of holmesmr/blog_os 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 holmesmr/blog_os 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 holmesmr/blog_os [INFO] finished frobbing holmesmr/blog_os [INFO] frobbed toml for holmesmr/blog_os written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/holmesmr/blog_os/Cargo.toml [INFO] started frobbing holmesmr/blog_os [INFO] finished frobbing holmesmr/blog_os [INFO] frobbed toml for holmesmr/blog_os written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/holmesmr/blog_os/Cargo.toml [INFO] crate holmesmr/blog_os 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] Blocking waiting for file lock on package cache lock [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] testing holmesmr/blog_os against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/holmesmr/blog_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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"` [INFO] [stdout] 6e1d26194a62427c731a0ede05a0f02dcc6713495636d1802779644c3d3d3961 [INFO] running `"docker" "start" "-a" "6e1d26194a62427c731a0ede05a0f02dcc6713495636d1802779644c3d3d3961"` [INFO] [stderr] Compiling unicode-width v0.1.5 [INFO] [stderr] Compiling volatile v0.2.6 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling raw-cpuid v6.1.0 [INFO] [stderr] Compiling getopts v0.2.18 [INFO] [stderr] Compiling pulldown-cmark v0.0.3 [INFO] [stderr] Compiling tempdir v0.3.7 [INFO] [stderr] Compiling skeptic v0.5.0 [INFO] [stderr] Compiling fixedvec v0.2.3 [INFO] [stderr] Compiling x86_64 v0.4.1 [INFO] [stderr] Compiling bootloader v0.3.12 [INFO] [stderr] Compiling blog_os v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `crate::util::halt` [INFO] [stderr] --> src/interrupts.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use crate::util::halt; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/vga_buffer.rs:106:21 [INFO] [stderr] | [INFO] [stderr] 106 | 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/integration_test_breakpoint-e922f341e8a1dcab.integration_test_breakpoint.7qvmjt3u-cgu.0.rcgu.o" "-o" "/opt/crater/target/debug/deps/integration_test_breakpoint-e922f341e8a1dcab" "-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,--start-group" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libblog_os-000758559677fbc0.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libuart_16550-12791a8ee07b344d.rlib" "/opt/crater/target/debug/deps/libx86_64-63bc7dc6c8fa3353.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-867c182c401028ea.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-5be740b740ad9b3e.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/liblazy_static-c4a76567f8d88da1.rlib" "/opt/crater/target/debug/deps/libspin-121c099f003ea3e5.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" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic" [INFO] [stderr] = note: /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 `blog_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/integration_test_double_fault-ae896c2d87913d6b.integration_test_double_fault.dy2zra4y-cgu.0.rcgu.o" "-o" "/opt/crater/target/debug/deps/integration_test_double_fault-ae896c2d87913d6b" "-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,--start-group" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libblog_os-000758559677fbc0.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libuart_16550-12791a8ee07b344d.rlib" "/opt/crater/target/debug/deps/libx86_64-63bc7dc6c8fa3353.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-867c182c401028ea.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-5be740b740ad9b3e.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/liblazy_static-c4a76567f8d88da1.rlib" "/opt/crater/target/debug/deps/libspin-121c099f003ea3e5.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" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic" [INFO] [stderr] = note: /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 `blog_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/integration_test_panic-e21307d786f63ac1.integration_test_panic.1hsa2i0o-cgu.0.rcgu.o" "-o" "/opt/crater/target/debug/deps/integration_test_panic-e21307d786f63ac1" "-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,--start-group" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libblog_os-000758559677fbc0.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libuart_16550-12791a8ee07b344d.rlib" "/opt/crater/target/debug/deps/libx86_64-63bc7dc6c8fa3353.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-867c182c401028ea.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-5be740b740ad9b3e.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/liblazy_static-c4a76567f8d88da1.rlib" "/opt/crater/target/debug/deps/libspin-121c099f003ea3e5.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" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic" [INFO] [stderr] = note: /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 `blog_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/integration_test_basic_boot-16341fde13f1fb2f.integration_test_basic_boot.82gvkbwx-cgu.0.rcgu.o" "-o" "/opt/crater/target/debug/deps/integration_test_basic_boot-16341fde13f1fb2f" "-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,--start-group" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libblog_os-000758559677fbc0.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libuart_16550-12791a8ee07b344d.rlib" "/opt/crater/target/debug/deps/libx86_64-63bc7dc6c8fa3353.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-867c182c401028ea.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-5be740b740ad9b3e.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/liblazy_static-c4a76567f8d88da1.rlib" "/opt/crater/target/debug/deps/libspin-121c099f003ea3e5.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" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/e212b7d492c96d3837691ba29d32d5f468933fb8-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a17fdd0a687135a8.rlib" "-Wl,-Bdynamic" [INFO] [stderr] = note: /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 `blog_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/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.7.rcgu.o" "-o" "/opt/crater/target/debug/deps/blog_os-743e6b8008b62a0f" "-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,--start-group" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libblog_os-000758559677fbc0.rlib" "/opt/crater/target/debug/deps/libvolatile-a6274c63e85eedc4.rlib" "/opt/crater/target/debug/deps/libuart_16550-12791a8ee07b344d.rlib" "/opt/crater/target/debug/deps/libx86_64-63bc7dc6c8fa3353.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/libpic8259_simple-3e245d6607a249ba.rlib" "/opt/crater/target/debug/deps/libcpuio-44b400c0586cbdd5.rlib" "/opt/crater/target/debug/deps/libx86_64-867c182c401028ea.rlib" "/opt/crater/target/debug/deps/libraw_cpuid-5be740b740ad9b3e.rlib" "/opt/crater/target/debug/deps/libarray_init-6ba58839649927b4.rlib" "/opt/crater/target/debug/deps/libnodrop-3e4eacebea822204.rlib" "/opt/crater/target/debug/deps/libusize_conversions-885df14c24659b2d.rlib" "/opt/crater/target/debug/deps/libbit_field-cd3bb28dc7f4af9e.rlib" "/opt/crater/target/debug/deps/libbitflags-20966be936af198b.rlib" "/opt/crater/target/debug/deps/libux-efadc792039eb950.rlib" "/opt/crater/target/debug/deps/liblazy_static-c4a76567f8d88da1.rlib" "/opt/crater/target/debug/deps/libspin-121c099f003ea3e5.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" "-Wl,--end-group" "/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/blog_os-743e6b8008b62a0f.blog_os.bsdl9fj0-cgu.6.rcgu.o: In function `_start': [INFO] [stderr] /opt/crater/workdir/<::blog_os::util::kernel_entrypoint macros>:5: 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 `blog_os`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "6e1d26194a62427c731a0ede05a0f02dcc6713495636d1802779644c3d3d3961"` [INFO] running `"docker" "rm" "-f" "6e1d26194a62427c731a0ede05a0f02dcc6713495636d1802779644c3d3d3961"` [INFO] [stdout] 6e1d26194a62427c731a0ede05a0f02dcc6713495636d1802779644c3d3d3961