[INFO] cloning repository https://github.com/dodecaphonic/rust_ffi_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dodecaphonic/rust_ffi_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdodecaphonic%2Frust_ffi_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdodecaphonic%2Frust_ffi_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73a1c32ee74f0848947012a1fdf456c29367a2b1
[INFO] testing dodecaphonic/rust_ffi_example against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdodecaphonic%2Frust_ffi_example" "/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/dodecaphonic/rust_ffi_example on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dodecaphonic/rust_ffi_example
[INFO] finished tweaking git repo https://github.com/dodecaphonic/rust_ffi_example
[INFO] tweaked toml for git repo https://github.com/dodecaphonic/rust_ffi_example written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dodecaphonic/rust_ffi_example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d5f34c8901018d1e5802f9fc67741c85737ce826588a1c1486c4e75aee70a2e
[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" "1d5f34c8901018d1e5802f9fc67741c85737ce826588a1c1486c4e75aee70a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d5f34c8901018d1e5802f9fc67741c85737ce826588a1c1486c4e75aee70a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5f34c8901018d1e5802f9fc67741c85737ce826588a1c1486c4e75aee70a2e", kill_on_drop: false }`
[INFO] [stdout] 1d5f34c8901018d1e5802f9fc67741c85737ce826588a1c1486c4e75aee70a2e
[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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c446705e724cfb689eaae6b5dc27db38ccde10b3531f4fafba7c4bdd0a5a68e3
[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" "c446705e724cfb689eaae6b5dc27db38ccde10b3531f4fafba7c4bdd0a5a68e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_ffi_example v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.8.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550" "/opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.1gmveh2icfkpevqj.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lmagic" "-Wl,--start-group" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-3532beb752f910d7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-3529ece450b7f3c6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-23e8f582a6744f80.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-5e7e0793b29cbf78.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-253e0736424ceb78.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-b6fd484888124c85.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-cca4d20e4b53839c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0a7401891c2a4f50.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-efbb25e073df787e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-25965457612624bc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-09058283ea779342.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-ab973dacc0513511.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b437d6640b1f764b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-8cc0b2380206399c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-727cdf2b6a468113.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cf4d442d877ea2f4.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-10-09-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-7e5b6df427ca977c.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.1.rcgu.o: in function `rust_ffi_example::magic::pow':
[INFO] [stdout]           /opt/rustwide/workdir/src/main.rs:18: undefined reference to `magic_pow'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/rust_ffi_example-b0a9c0a95d799550.rust_ffi_example.7eo4ubgh-cgu.1.rcgu.o: in function `rust_ffi_example::magic::multiply':
[INFO] [stdout]           /opt/rustwide/workdir/src/main.rs:24: undefined reference to `magic_multiply'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_ffi_example`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c446705e724cfb689eaae6b5dc27db38ccde10b3531f4fafba7c4bdd0a5a68e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c446705e724cfb689eaae6b5dc27db38ccde10b3531f4fafba7c4bdd0a5a68e3", kill_on_drop: false }`
[INFO] [stdout] c446705e724cfb689eaae6b5dc27db38ccde10b3531f4fafba7c4bdd0a5a68e3
