[INFO] fetching crate rurust 0.1.11...
[INFO] testing rurust-0.1.11 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate rurust 0.1.11 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rurust 0.1.11 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 crates.io crate rurust 0.1.11
[INFO] finished tweaking crates.io crate rurust 0.1.11
[INFO] tweaked toml for crates.io crate rurust 0.1.11 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mri-sys v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6aa9c214b2cb27fcfc22b9c27f8391b63fafb17a65265379e37d85d2c5ec0aed
[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" "6aa9c214b2cb27fcfc22b9c27f8391b63fafb17a65265379e37d85d2c5ec0aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aa9c214b2cb27fcfc22b9c27f8391b63fafb17a65265379e37d85d2c5ec0aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa9c214b2cb27fcfc22b9c27f8391b63fafb17a65265379e37d85d2c5ec0aed", kill_on_drop: false }`
[INFO] [stdout] 6aa9c214b2cb27fcfc22b9c27f8391b63fafb17a65265379e37d85d2c5ec0aed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 640add1b3835ec8356fc6f62970441c9ee18c6320f094c029a16509200346256
[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" "640add1b3835ec8356fc6f62970441c9ee18c6320f094c029a16509200346256", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling mri-sys v0.2.4
[INFO] [stderr]    Compiling rurust v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/vm.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | / lazy_static! {
[INFO] [stdout] 20 | |     static ref ACTIVE_VM: Mutex<VM> = Mutex::new(VM::new().expect("failed to create Ruby VM"));
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                               ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:69
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[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/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.repl.9xs9dmm9-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6" "/opt/rustwide/target/debug/deps/repl-19bab0d5aa26a4c6.15594id1cfag4ofs.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" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librurust-1ee051d025f0dcb7.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-2ea69cae54b65af6.rlib" "/opt/rustwide/target/debug/deps/libmri_sys-d4f4e5e96fe7f992.rlib" "/opt/rustwide/target/debug/deps/liblibc-e52aab25f5d90c7e.rlib" "-Wl,--start-group" "/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" "-lgmp" "-lruby" "-lcrypt" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lruby
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rurust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "640add1b3835ec8356fc6f62970441c9ee18c6320f094c029a16509200346256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "640add1b3835ec8356fc6f62970441c9ee18c6320f094c029a16509200346256", kill_on_drop: false }`
[INFO] [stdout] 640add1b3835ec8356fc6f62970441c9ee18c6320f094c029a16509200346256
