Nov 16 19:10:21.592 INFO testing mpajkowski/micecoreos against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 16 19:10:21.593 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-0/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 16 19:10:22.024 INFO [stdout] 7b0446715fbfbb93d4810240671647ae3b6e1e160f391fb54a61f3b3f10a1b77
Nov 16 19:10:22.031 INFO running `"docker" "start" "-a" "7b0446715fbfbb93d4810240671647ae3b6e1e160f391fb54a61f3b3f10a1b77"`
Nov 16 19:10:23.471 INFO [stderr] usermod: no changes
Nov 16 19:10:23.551 INFO [stderr]    Compiling spin v0.4.9
Nov 16 19:10:23.551 INFO [stderr]    Compiling os_bootinfo v0.2.1
Nov 16 19:10:23.551 INFO [stderr]    Compiling volatile v0.2.4
Nov 16 19:10:23.551 INFO [stderr]    Compiling lazy_static v1.1.0
Nov 16 19:10:24.411 INFO [stderr]    Compiling bootloader_precompiled v0.2.0
Nov 16 19:10:25.432 INFO [stderr]    Compiling micecoreos v0.1.0 (/source)
Nov 16 19:10:25.659 INFO [stderr] warning: unused `core::result::Result` that must be used
Nov 16 19:10:25.659 INFO [stderr]   --> src/main.rs:28:9
Nov 16 19:10:25.659 INFO [stderr]    |
Nov 16 19:10:25.659 INFO [stderr] 28 |         write!(vga::WRITER.lock(), "{} ", i);
Nov 16 19:10:25.659 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:10:25.659 INFO [stderr]    |
Nov 16 19:10:25.659 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 16 19:10:25.659 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:10:25.659 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 19:10:25.659 INFO [stderr] 
Nov 16 19:10:26.031 INFO [stderr] error: linking with `cc` failed: exit code: 1
Nov 16 19:10:26.031 INFO [stderr]   |
Nov 16 19:10:26.033 INFO [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/rustup-home/toolchains/6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.0.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.1.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.10.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.11.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.12.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.13.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.14.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.15.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.2.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.3.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.4.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.5.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.6.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.7.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.8.rcgu.o" "/target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.9.rcgu.o" "-o" "/target/debug/deps/micecoreos-619c93c19e7d5e88" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/target/debug/deps" "-L" "/rustup-home/toolchains/6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/target/debug/deps/liblazy_static-0c87e4cbb3bb7345.rlib" "/target/debug/deps/libspin-4f37c7729a8e6020.rlib" "/target/debug/deps/libvolatile-559deb5f28977051.rlib" "/target/debug/deps/libbootloader_precompiled-bfeae55751c6d6c3.rlib" "/target/debug/deps/libos_bootinfo-5cd0e7d1965525ef.rlib" "/rustup-home/toolchains/6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-4529caf32dd220b9.rlib" "/rustup-home/toolchains/6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-6899b61660c33938.rlib" "-Wl,-Bdynamic"
Nov 16 19:10:26.033 INFO [stderr]   = note: /target/debug/deps/micecoreos-619c93c19e7d5e88.micecoreos.5t5v8wuf-cgu.4.rcgu.o: In function `_start':
Nov 16 19:10:26.034 INFO [stderr]           /source/src/main.rs:22: multiple definition of `_start'
Nov 16 19:10:26.034 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
Nov 16 19:10:26.034 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Nov 16 19:10:26.034 INFO [stderr]           (.text+0x12): undefined reference to `__libc_csu_fini'
Nov 16 19:10:26.035 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Nov 16 19:10:26.035 INFO [stderr]           (.text+0x19): undefined reference to `__libc_csu_init'
Nov 16 19:10:26.035 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Nov 16 19:10:26.035 INFO [stderr]           (.text+0x20): undefined reference to `main'
Nov 16 19:10:26.036 INFO [stderr]           /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
Nov 16 19:10:26.036 INFO [stderr]           (.text+0x25): undefined reference to `__libc_start_main'
Nov 16 19:10:26.036 INFO [stderr]           collect2: error: ld returned 1 exit status
Nov 16 19:10:26.037 INFO [stderr]           
Nov 16 19:10:26.037 INFO [stderr] 
Nov 16 19:10:26.043 INFO [stderr] error: aborting due to previous error
Nov 16 19:10:26.043 INFO [stderr] 
Nov 16 19:10:26.044 INFO [stderr] error: Could not compile `micecoreos`.
Nov 16 19:10:26.044 INFO [stderr] 
Nov 16 19:10:26.044 INFO [stderr] To learn more, run the command again with --verbose.
Nov 16 19:10:26.055 INFO [stderr] su: No module specific data is present
Nov 16 19:10:27.185 INFO running `"docker" "inspect" "7b0446715fbfbb93d4810240671647ae3b6e1e160f391fb54a61f3b3f10a1b77"`
Nov 16 19:10:27.510 INFO running `"docker" "rm" "-f" "7b0446715fbfbb93d4810240671647ae3b6e1e160f391fb54a61f3b3f10a1b77"`
Nov 16 19:10:27.883 INFO [stdout] 7b0446715fbfbb93d4810240671647ae3b6e1e160f391fb54a61f3b3f10a1b77