[INFO] cloning repository https://github.com/fredguile/rust-kernel-demo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fredguile/rust-kernel-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredguile%2Frust-kernel-demo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredguile%2Frust-kernel-demo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 770c4410cfe2df2e01c39141d274b011778607cd [INFO] testing fredguile/rust-kernel-demo against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredguile%2Frust-kernel-demo" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fredguile/rust-kernel-demo 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-6/source/.cargo/config.toml [INFO] removed /workspace/builds/worker-6/source/rust-toolchain [INFO] started tweaking git repo https://github.com/fredguile/rust-kernel-demo [INFO] finished tweaking git repo https://github.com/fredguile/rust-kernel-demo [INFO] tweaked toml for git repo https://github.com/fredguile/rust-kernel-demo written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/fredguile/rust-kernel-demo 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4b7ea55683ac8757054d263fba85b262abbb840a8059cec4b4c16c036e20fa9b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4b7ea55683ac8757054d263fba85b262abbb840a8059cec4b4c16c036e20fa9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4b7ea55683ac8757054d263fba85b262abbb840a8059cec4b4c16c036e20fa9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b7ea55683ac8757054d263fba85b262abbb840a8059cec4b4c16c036e20fa9b", kill_on_drop: false }` [INFO] [stdout] 4b7ea55683ac8757054d263fba85b262abbb840a8059cec4b4c16c036e20fa9b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 63e9a84e3eaaa6b9a3e18e6b3249e205e8cf65380c84eb253fb2dbf04a7adc47 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "63e9a84e3eaaa6b9a3e18e6b3249e205e8cf65380c84eb253fb2dbf04a7adc47", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling x86_64 v0.14.4 [INFO] [stderr] Compiling bit_field v0.9.0 [INFO] [stderr] Compiling volatile v0.4.4 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling bootloader v0.9.19 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling volatile v0.2.7 [INFO] [stderr] Compiling pc-keyboard v0.5.1 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling pic8259 v0.10.2 [INFO] [stderr] Compiling rust-kernel-demo 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/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.9.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/libvolatile-7b7f4cad955a0a69.rlib" "/opt/rustwide/target/debug/deps/libpic8259-c70adf491b2f5d91.rlib" "/opt/rustwide/target/debug/deps/libx86_64-77141066a1cdd1ce.rlib" "/opt/rustwide/target/debug/deps/libvolatile-2725fc1465a9ae2f.rlib" "/opt/rustwide/target/debug/deps/libbitflags-f9b5d3050be6bb5d.rlib" "/opt/rustwide/target/debug/deps/libbit_field-fe0d9536d45df3d7.rlib" "/opt/rustwide/target/debug/deps/libpc_keyboard-0acbbcc80d5f6630.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-0178a18930f03273.rlib" "/opt/rustwide/target/debug/deps/libspin-4466e4556840553f.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/rust_kernel_demo-1fe1a1a28159d840" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs" [INFO] [stdout] = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/rust_kernel_demo-1fe1a1a28159d840.rust_kernel_demo.7b4fb883-cgu.15.rcgu.o: in function `_start': [INFO] [stdout] /opt/rustwide/workdir/src/main.rs:17: 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 `rust-kernel-demo` due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "63e9a84e3eaaa6b9a3e18e6b3249e205e8cf65380c84eb253fb2dbf04a7adc47", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "63e9a84e3eaaa6b9a3e18e6b3249e205e8cf65380c84eb253fb2dbf04a7adc47", kill_on_drop: false }` [INFO] [stdout] 63e9a84e3eaaa6b9a3e18e6b3249e205e8cf65380c84eb253fb2dbf04a7adc47