[INFO] crate gcast 0.1.5 is already in cache
[INFO] extracting crate gcast 0.1.5 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/gcast/0.1.5
[INFO] extracting crate gcast 0.1.5 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/gcast/0.1.5
[INFO] validating manifest of gcast-0.1.5 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gcast-0.1.5 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gcast-0.1.5
[INFO] finished frobbing gcast-0.1.5
[INFO] frobbed toml for gcast-0.1.5 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/gcast/0.1.5/Cargo.toml
[INFO] started frobbing gcast-0.1.5
[INFO] finished frobbing gcast-0.1.5
[INFO] frobbed toml for gcast-0.1.5 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/gcast/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gcast-0.1.5 against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/gcast/0.1.5:/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=forbid" "-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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3e991557b4784a89f9a07726d4b8da43874906f0036965e5a700875364dd6979
[INFO] running `"docker" "start" "-a" "3e991557b4784a89f9a07726d4b8da43874906f0036965e5a700875364dd6979"`
[INFO] [stderr]    Compiling gcast-wire v0.1.5
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking dns-parser v0.6.0
[INFO] [stderr]     Checking ifaces v0.0.3
[INFO] [stderr]     Checking error-chain v0.6.2
[INFO] [stderr]     Checking mdns v0.1.4
[INFO] [stderr] error: failed to run custom build command for `gcast-wire v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/gcast-wire-3320828d566624db/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] protoc-gen-rust: program not found or is not executable
[INFO] [stderr] --rust_out: protoc-gen-rust: Plugin failed with status code 1.
[INFO] [stderr] thread 'main' panicked at 'assertion failed: protoc_status.success()', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcast-wire-0.1.5/build.rs:9:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x562be16b527b - backtrace::backtrace::libunwind::trace::hbfb69e72f505529b
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x562be16b527b - backtrace::backtrace::trace_unsynchronized::hac9ea77fa06b91bd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x562be16b527b - std::sys_common::backtrace::_print::hf6f722cabcf8c26d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x562be16b527b - std::sys_common::backtrace::print::h9cca5983945bdb52
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x562be16b527b - std::panicking::default_hook::{{closure}}::h2fab7259edc3a80d
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x562be16b4f57 - std::panicking::default_hook::ha99acf6d9268d46d
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x562be16b5940 - std::panicking::rust_panic_with_hook::hddab2c65ce92e648
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x562be16a7894 - std::panicking::begin_panic::h6da34101bf999f07
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x562be16a66fe - build_script_build::main::h1f60b99b724b4c50
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcast-wire-0.1.5/build.rs:9
[INFO] [stderr]    9:     0x562be16ab6f0 - std::rt::lang_start::{{closure}}::h26c1da5391facb0d
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   10:     0x562be16b5393 - std::rt::lang_start_internal::{{closure}}::hbec6d1ff7b00d029
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   11:     0x562be16b5393 - std::panicking::try::do_call::h83e51489f66cd002
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   12:     0x562be16bb61a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   13:     0x562be16b5e4d - std::panicking::try::hb1deae6a8854c8be
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   14:     0x562be16b5e4d - std::panic::catch_unwind::hff09c33b8b66b7a2
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   15:     0x562be16b5e4d - std::rt::lang_start_internal::h01b3f7988e3fe75d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   16:     0x562be16ab6c9 - std::rt::lang_start::h07787b73f3a6ca59
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   17:     0x562be16a674a - main
[INFO] [stderr]   18:     0x7f21b82aa2e1 - __libc_start_main
[INFO] [stderr]   19:     0x562be16a34ca - _start
[INFO] [stderr]   20:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3e991557b4784a89f9a07726d4b8da43874906f0036965e5a700875364dd6979"`
[INFO] running `"docker" "rm" "-f" "3e991557b4784a89f9a07726d4b8da43874906f0036965e5a700875364dd6979"`
[INFO] [stdout] 3e991557b4784a89f9a07726d4b8da43874906f0036965e5a700875364dd6979