Dec 13 20:31:02.970 INFO testing ejlangev/rust_os against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 20:31:02.970 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 13 20:31:03.436 INFO [stdout] 2c9621f4546090a2b605f3d48c681330fa96d5d7ab6657b96544137d2a30ab0f
Dec 13 20:31:03.438 INFO running `"docker" "start" "-a" "2c9621f4546090a2b605f3d48c681330fa96d5d7ab6657b96544137d2a30ab0f"`
Dec 13 20:31:05.172 INFO [stderr] usermod: no changes
Dec 13 20:31:05.431 INFO [stderr]    Compiling bootloader v0.3.7
Dec 13 20:31:06.535 INFO [stderr]    Compiling ethan_os v0.1.0 (/source)
Dec 13 20:31:07.189 INFO [stderr] error: linking with `cc` failed: exit code: 1
Dec 13 20:31:07.189 INFO [stderr]   |
Dec 13 20:31:07.199 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/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.0.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.1.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.10.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.11.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.12.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.13.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.14.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.15.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.2.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.3.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.4.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.5.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.6.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.7.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.8.rcgu.o" "/target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.9.rcgu.o" "-o" "/target/debug/deps/ethan_os-5d000586e4f95dae" "-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/libvolatile-eb0a76ac84432637.rlib" "/target/debug/deps/liblazy_static-9ee4a070ece8106a.rlib" "/target/debug/deps/libspin-df824661139163b3.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 13 20:31:07.199 INFO [stderr]   = note: /target/debug/deps/ethan_os-5d000586e4f95dae.ethan_os.7tk3a0xf-cgu.2.rcgu.o: In function `_start':
Dec 13 20:31:07.199 INFO [stderr]           /source/src/main.rs:22: multiple definition of `_start'
Dec 13 20:31:07.199 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
Dec 13 20:31:07.199 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 13 20:31:07.199 INFO [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
Dec 13 20:31:07.199 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 13 20:31:07.199 INFO [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
Dec 13 20:31:07.199 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 13 20:31:07.199 INFO [stderr]           (.text+0x20): undefined reference to `main'
Dec 13 20:31:07.199 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Dec 13 20:31:07.199 INFO [stderr]           (.text+0x25): undefined reference to `__libc_start_main'
Dec 13 20:31:07.199 INFO [stderr]           collect2: error: ld returned 1 exit status
Dec 13 20:31:07.199 INFO [stderr]           
Dec 13 20:31:07.199 INFO [stderr] 
Dec 13 20:31:07.199 INFO [stderr] error: aborting due to previous error
Dec 13 20:31:07.199 INFO [stderr] 
Dec 13 20:31:07.215 INFO [stderr] error: Could not compile `ethan_os`.
Dec 13 20:31:07.215 INFO [stderr] 
Dec 13 20:31:07.215 INFO [stderr] To learn more, run the command again with --verbose.
Dec 13 20:31:07.223 INFO [stderr] su: No module specific data is present
Dec 13 20:31:08.159 INFO running `"docker" "inspect" "2c9621f4546090a2b605f3d48c681330fa96d5d7ab6657b96544137d2a30ab0f"`
Dec 13 20:31:08.446 INFO running `"docker" "rm" "-f" "2c9621f4546090a2b605f3d48c681330fa96d5d7ab6657b96544137d2a30ab0f"`
Dec 13 20:31:08.783 INFO [stdout] 2c9621f4546090a2b605f3d48c681330fa96d5d7ab6657b96544137d2a30ab0f