[INFO] cloning repository mrsweaters/nutbutter-os
[INFO] running `"git" "clone" "--bare" "git://github.com/mrsweaters/nutbutter-os.git" "work/cache/sources/gh/mrsweaters/nutbutter-os"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/mrsweaters/nutbutter-os'...
[INFO] running `"git" "clone" "work/cache/sources/gh/mrsweaters/nutbutter-os" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mrsweaters/nutbutter-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mrsweaters/nutbutter-os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mrsweaters/nutbutter-os" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mrsweaters/nutbutter-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mrsweaters/nutbutter-os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d78c1c4a1180610af9ca2ec10d9a8d300caa792a
[INFO] sha for GitHub repo mrsweaters/nutbutter-os: d78c1c4a1180610af9ca2ec10d9a8d300caa792a
[INFO] validating manifest of mrsweaters/nutbutter-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 mrsweaters/nutbutter-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 mrsweaters/nutbutter-os
[INFO] finished frobbing mrsweaters/nutbutter-os
[INFO] frobbed toml for mrsweaters/nutbutter-os written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mrsweaters/nutbutter-os/Cargo.toml
[INFO] started frobbing mrsweaters/nutbutter-os
[INFO] finished frobbing mrsweaters/nutbutter-os
[INFO] frobbed toml for mrsweaters/nutbutter-os written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mrsweaters/nutbutter-os/Cargo.toml
[INFO] crate mrsweaters/nutbutter-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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mrsweaters/nutbutter-os 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/mrsweaters/nutbutter-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] b101df458760a12c2dcd591490ed1762202d657e3f5f4655603e02b7940d49ff
[INFO] running `"docker" "start" "-a" "b101df458760a12c2dcd591490ed1762202d657e3f5f4655603e02b7940d49ff"`
[INFO] [stderr]    Compiling spin v0.4.9
[INFO] [stderr]    Compiling volatile v0.2.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling bootloader_precompiled v0.2.0
[INFO] [stderr]    Compiling nb_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/vga_buffer.rs:82:21
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 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/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/nb_os-c9aa03322549ed20" "-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/libvolatile-c733e1b7056934bc.rlib" "/opt/crater/target/debug/deps/libbootloader_precompiled-489728d8e2968e5d.rlib" "/opt/crater/target/debug/deps/libos_bootinfo-65924abfed393c40.rlib" "/opt/crater/target/debug/deps/liblazy_static-607b996013fd910e.rlib" "/opt/crater/target/debug/deps/libspin-34b9490bdbd04db0.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/nb_os-c9aa03322549ed20.nb_os.f31uqdo4-cgu.5.rcgu.o: In function `_start':
[INFO] [stderr]           /opt/crater/workdir/src/main.rs:23: 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 `nb_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b101df458760a12c2dcd591490ed1762202d657e3f5f4655603e02b7940d49ff"`
[INFO] running `"docker" "rm" "-f" "b101df458760a12c2dcd591490ed1762202d657e3f5f4655603e02b7940d49ff"`
[INFO] [stdout] b101df458760a12c2dcd591490ed1762202d657e3f5f4655603e02b7940d49ff