[INFO] crate nanovg 1.0.2 is already in cache [INFO] extracting crate nanovg 1.0.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/nanovg/1.0.2 [INFO] extracting crate nanovg 1.0.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/nanovg/1.0.2 [INFO] validating manifest of nanovg-1.0.2 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of nanovg-1.0.2 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing nanovg-1.0.2 [INFO] removed 6 missing examples [INFO] finished frobbing nanovg-1.0.2 [INFO] frobbed toml for nanovg-1.0.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/nanovg/1.0.2/Cargo.toml [INFO] started frobbing nanovg-1.0.2 [INFO] removed 6 missing examples [INFO] finished frobbing nanovg-1.0.2 [INFO] frobbed toml for nanovg-1.0.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/nanovg/1.0.2/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing nanovg-1.0.2 against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/nanovg/1.0.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 41868ed9bcd4d00f716f24df75c214bbebba5632200fdb27181d36a9f3089dc3 [INFO] running `"docker" "start" "-a" "41868ed9bcd4d00f716f24df75c214bbebba5632200fdb27181d36a9f3089dc3"` [INFO] [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently [INFO] [stderr] disables Cargo from automatically inferring other example targets. [INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following [INFO] [stderr] files will be included as a example target: [INFO] [stderr] [INFO] [stderr] * /opt/crater/workdir/examples/demo-text.rs [INFO] [stderr] * /opt/crater/workdir/examples/demo-clock.rs [INFO] [stderr] * /opt/crater/workdir/examples/demo-cutout.rs [INFO] [stderr] * /opt/crater/workdir/examples/demo-ui.rs [INFO] [stderr] * /opt/crater/workdir/examples/demo-glutin.rs [INFO] [stderr] * /opt/crater/workdir/examples/demo-transform.rs [INFO] [stderr] [INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be [INFO] [stderr] ready to be compiled as a example target today. You can future-proof yourself [INFO] [stderr] and disable this warning by adding `autoexamples = false` to your [package] [INFO] [stderr] section. You may also move the files to a location where Cargo would not [INFO] [stderr] automatically infer them to be a target, such as in subfolders. [INFO] [stderr] [INFO] [stderr] For more information on this warning you can consult [INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330 [INFO] [stderr] Compiling nanovg-sys v1.0.2 [INFO] [stderr] error: failed to run custom build command for `nanovg-sys v1.0.2` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/nanovg-sys-62af6a125ac7a943/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'Unable to determine the backend / implementation. Have you enabled one of the features?', src/libcore/option.rs:1166:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5584c6c79b3b - backtrace::backtrace::libunwind::trace::h23ae608c8b906c69 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x5584c6c79b3b - backtrace::backtrace::trace_unsynchronized::h65b3ea295a85fd48 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x5584c6c79b3b - std::sys_common::backtrace::_print::h24f527b44b6cfc06 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x5584c6c79b3b - std::sys_common::backtrace::print::h712608e4347fd64a [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x5584c6c79b3b - std::panicking::default_hook::{{closure}}::h6c3d570c2b500048 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x5584c6c79816 - std::panicking::default_hook::hb29963fb4747e0dd [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x5584c6c7a2ad - std::panicking::rust_panic_with_hook::hd1236c3083de823a [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x5584c6c79e32 - std::panicking::continue_panic_fmt::he38ad41d6304a12c [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x5584c6c79d16 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x5584c6c954ed - core::panicking::panic_fmt::h1bc6de43c92ad80c [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x5584c6c95557 - core::option::expect_failed::h129ce0dbbd17b87d [INFO] [stderr] at src/libcore/option.rs:1166 [INFO] [stderr] 11: 0x5584c6bef626 - core::option::Option::expect::h085de7fcbc1a58a0 [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/option.rs:345 [INFO] [stderr] 12: 0x5584c6bee3df - build_script_build::main::h4d5fb5367a34b04d [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nanovg-sys-1.0.2/build.rs:33 [INFO] [stderr] 13: 0x5584c6bece20 - std::rt::lang_start::{{closure}}::h8dd5a862efa91ad1 [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x5584c6c79cb3 - std::rt::lang_start_internal::{{closure}}::hf367a5a6ae52b0ce [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x5584c6c79cb3 - std::panicking::try::do_call::h9d779bc5e27e3284 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x5584c6c8211a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x5584c6c7a7bd - std::panicking::try::h4af22d9cb0afa351 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x5584c6c7a7bd - std::panic::catch_unwind::hbb68a9ada87bfb97 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x5584c6c7a7bd - std::rt::lang_start_internal::hba9e09d74440ce4d [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x5584c6becdf9 - std::rt::lang_start::h7c82f324b61b428e [INFO] [stderr] at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x5584c6bee72a - main [INFO] [stderr] 22: 0x7f128f2672e1 - __libc_start_main [INFO] [stderr] 23: 0x5584c6beae2a - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "41868ed9bcd4d00f716f24df75c214bbebba5632200fdb27181d36a9f3089dc3"` [INFO] running `"docker" "rm" "-f" "41868ed9bcd4d00f716f24df75c214bbebba5632200fdb27181d36a9f3089dc3"` [INFO] [stdout] 41868ed9bcd4d00f716f24df75c214bbebba5632200fdb27181d36a9f3089dc3