[INFO] cloning repository https://github.com/k-start/untitled_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k-start/untitled_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-start%2Funtitled_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-start%2Funtitled_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d111c8be7e65fe68c4fe7fa3600b913491bf2ebc
[INFO] testing k-start/untitled_os against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-start%2Funtitled_os" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k-start/untitled_os on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-45/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-45/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/k-start/untitled_os
[INFO] finished tweaking git repo https://github.com/k-start/untitled_os
[INFO] tweaked toml for git repo https://github.com/k-start/untitled_os written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate git repo https://github.com/k-start/untitled_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 055cf421c9800e16e54948af860eb002d87fa20a1b46f8d79bb282f7ea39d9d4
[INFO] running `Command { std: "docker" "start" "-a" "055cf421c9800e16e54948af860eb002d87fa20a1b46f8d79bb282f7ea39d9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "055cf421c9800e16e54948af860eb002d87fa20a1b46f8d79bb282f7ea39d9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055cf421c9800e16e54948af860eb002d87fa20a1b46f8d79bb282f7ea39d9d4", kill_on_drop: false }`
[INFO] [stdout] 055cf421c9800e16e54948af860eb002d87fa20a1b46f8d79bb282f7ea39d9d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c010d8c4a7a7fd360b4145a2f3116fb3dd7a1023296047dad2191b93576a69d4
[INFO] running `Command { std: "docker" "start" "-a" "c010d8c4a7a7fd360b4145a2f3116fb3dd7a1023296047dad2191b93576a69d4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling x86_64 v0.14.3
[INFO] [stderr]    Compiling volatile v0.4.4
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling bootloader v0.10.6
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling block_device v0.1.2
[INFO] [stderr]    Compiling pc-keyboard v0.5.1
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling fat32 v0.2.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling linked_list_allocator v0.9.0
[INFO] [stderr]    Compiling pic8259 v0.10.1
[INFO] [stderr]    Compiling untitled_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.17hetjo65pdalu55.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libuntitled_os_lib-a8fe35685e06e01c.rlib" "/opt/rustwide/target/debug/deps/liblinked_list_allocator-08b16a85613d27d7.rlib" "/opt/rustwide/target/debug/deps/libspinning_top-4a5cb4cd9f5b4341.rlib" "/opt/rustwide/target/debug/deps/libpc_keyboard-0acbbcc80d5f6630.rlib" "/opt/rustwide/target/debug/deps/libspin-5b409c712c275818.rlib" "/opt/rustwide/target/debug/deps/liblock_api-5b46b67fcdda6de3.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-67ca832cf121b569.rlib" "/opt/rustwide/target/debug/deps/libpic8259-0c53920f70be39e9.rlib" "/opt/rustwide/target/debug/deps/libx86_64-1484ba5904b8f7e7.rlib" "/opt/rustwide/target/debug/deps/libvolatile-2725fc1465a9ae2f.rlib" "/opt/rustwide/target/debug/deps/libbitflags-b46fc44f5898637b.rlib" "/opt/rustwide/target/debug/deps/libbit_field-fe0d9536d45df3d7.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-0178a18930f03273.rlib" "/opt/rustwide/target/debug/deps/libspin-4466e4556840553f.rlib" "/opt/rustwide/target/debug/deps/libbootloader-9c007acf31cadb11.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-57b4679830289815.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2a6a2797f7a73818.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-0e3656b1fda5fd7b.rlib" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-13b419dfbcf9c1f8.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/a77da2d454e6caa227a85b16410b95f93495e7e0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/untitled_os-a6cc49368fcc3081.untitled_os.5926b827-cgu.0.rcgu.o: in function `_start':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bootloader-0.10.6/src/lib.rs:122: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stdout]           /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
[INFO] [stdout]           (.text+0x16): undefined reference to `__libc_csu_fini'
[INFO] [stdout]           /usr/bin/ld: (.text+0x1d): undefined reference to `__libc_csu_init'
[INFO] [stdout]           /usr/bin/ld: (.text+0x24): undefined reference to `main'
[INFO] [stdout]           /usr/bin/ld: (.text+0x2a): undefined reference to `__libc_start_main'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `untitled_os` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c010d8c4a7a7fd360b4145a2f3116fb3dd7a1023296047dad2191b93576a69d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c010d8c4a7a7fd360b4145a2f3116fb3dd7a1023296047dad2191b93576a69d4", kill_on_drop: false }`
[INFO] [stdout] c010d8c4a7a7fd360b4145a2f3116fb3dd7a1023296047dad2191b93576a69d4