Dec 14 12:29:51.576 INFO testing AleVul/kernel_playground against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 12:29:51.576 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 12:29:51.771 INFO [stdout] f21dfe1b9927ac4d8c922300a7c21d36e81cc1ebd8856922e6d6dcfa27ea6a4e
Dec 14 12:29:51.773 INFO running `"docker" "start" "-a" "f21dfe1b9927ac4d8c922300a7c21d36e81cc1ebd8856922e6d6dcfa27ea6a4e"`
Dec 14 12:29:52.486 INFO [stderr] usermod: no changes
Dec 14 12:29:52.523 INFO [stderr]    Compiling x86_64 v0.2.11
Dec 14 12:29:54.139 INFO [stderr]    Compiling bootloader_precompiled v0.3.0
Dec 14 12:29:55.084 INFO [stderr]    Compiling kernel_playground v0.1.0 (/source)
Dec 14 12:29:55.928 INFO [stderr] error: linking with `cc` failed: exit code: 1
Dec 14 12:29:55.928 INFO [stderr]   |
Dec 14 12:29:55.928 INFO [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/rustup-home/toolchains/bd47d6825bf4090517549d33cfef10d3300b4a75-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.0.rcgu.o" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.1.rcgu.o" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.2.rcgu.o" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.3.rcgu.o" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.4.rcgu.o" "-o" "/target/debug/deps/kernel_playground-73ac6d2e93f37dd7" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/target/debug/deps" "-L" "/rustup-home/toolchains/bd47d6825bf4090517549d33cfef10d3300b4a75-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/target/debug/deps/libbootloader_precompiled-4511223d10ebd515.rlib" "/target/debug/deps/libx86_64-02f62e485ef37510.rlib" "/target/debug/deps/libux-83a01d491b546601.rlib" "/target/debug/deps/libusize_conversions-8111d1de3aef5d86.rlib" "/target/debug/deps/libos_bootinfo-b4342568bc4a022d.rlib" "/target/debug/deps/libbit_field-f6c761de83bbe094.rlib" "/target/debug/deps/libbitflags-b089b40758e1aedc.rlib" "/rustup-home/toolchains/bd47d6825bf4090517549d33cfef10d3300b4a75-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-02cab32753740b78.rlib" "/rustup-home/toolchains/bd47d6825bf4090517549d33cfef10d3300b4a75-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-abcd26adb0919b33.rlib" "/rustup-home/toolchains/bd47d6825bf4090517549d33cfef10d3300b4a75-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-e4966369233fd0ee.rlib" "-Wl,-Bdynamic"
Dec 14 12:29:55.928 INFO [stderr]   = note: /target/debug/deps/kernel_playground-73ac6d2e93f37dd7.kernel_playground.87309ss8-cgu.4.rcgu.o: In function `_start':
Dec 14 12:29:55.928 INFO [stderr]           /source/src/main.rs:17: multiple definition of `_start'
Dec 14 12:29:55.928 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
Dec 14 12:29:55.928 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 14 12:29:55.928 INFO [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
Dec 14 12:29:55.928 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 14 12:29:55.928 INFO [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
Dec 14 12:29:55.928 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 14 12:29:55.928 INFO [stderr]           (.text+0x20): undefined reference to `main'
Dec 14 12:29:55.928 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 14 12:29:55.928 INFO [stderr]           (.text+0x25): undefined reference to `__libc_start_main'
Dec 14 12:29:55.928 INFO [stderr]           collect2: error: ld returned 1 exit status
Dec 14 12:29:55.928 INFO [stderr]           
Dec 14 12:29:55.928 INFO [stderr] 
Dec 14 12:29:55.928 INFO [stderr] error: aborting due to previous error
Dec 14 12:29:55.928 INFO [stderr] 
Dec 14 12:29:55.937 INFO [stderr] error: Could not compile `kernel_playground`.
Dec 14 12:29:55.937 INFO [stderr] 
Dec 14 12:29:55.937 INFO [stderr] To learn more, run the command again with --verbose.
Dec 14 12:29:55.937 INFO [stderr] su: No module specific data is present
Dec 14 12:29:56.695 INFO running `"docker" "inspect" "f21dfe1b9927ac4d8c922300a7c21d36e81cc1ebd8856922e6d6dcfa27ea6a4e"`
Dec 14 12:29:57.022 INFO running `"docker" "rm" "-f" "f21dfe1b9927ac4d8c922300a7c21d36e81cc1ebd8856922e6d6dcfa27ea6a4e"`
Dec 14 12:29:57.268 INFO [stdout] f21dfe1b9927ac4d8c922300a7c21d36e81cc1ebd8856922e6d6dcfa27ea6a4e