[INFO] crate rustmann 0.1.0 is already in cache
[INFO] extracting crate rustmann 0.1.0 into work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/rustmann/0.1.0
[INFO] extracting crate rustmann 0.1.0 into work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/rustmann/0.1.0
[INFO] validating manifest of rustmann-0.1.0 on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rustmann-0.1.0 on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rustmann-0.1.0
[INFO] finished frobbing rustmann-0.1.0
[INFO] frobbed toml for rustmann-0.1.0 written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/reg/rustmann/0.1.0/Cargo.toml
[INFO] started frobbing rustmann-0.1.0
[INFO] finished frobbing rustmann-0.1.0
[INFO] frobbed toml for rustmann-0.1.0 written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/rustmann/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rustmann-0.1.0 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/reg/rustmann/0.1.0:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4ecd63eb00145ce01d26b57c6482a8318b603443ccb4a307eeaa456d9a88c7b7
[INFO] running `"docker" "start" "-a" "4ecd63eb00145ce01d26b57c6482a8318b603443ccb4a307eeaa456d9a88c7b7"`
[INFO] [stderr]    Compiling protobuf v2.2.0
[INFO] [stderr]    Compiling protobuf-codegen v2.2.0
[INFO] [stderr]    Compiling protoc-rust v2.2.0
[INFO] [stderr]    Compiling rustmann v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `rustmann v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/rustmann-36778a031fed7425/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'protoc: Custom { kind: NotFound, error: StringError("failed to spawn `\"protoc\" \"--version\"`: No such file or directory (os error 2)") }', src/libcore/result.rs:1009:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55ce2a7f2af3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6e7bc8d4fb88ec5c
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
[INFO] [stderr]    1:     0x55ce2a7eebc8 - std::sys_common::backtrace::_print::h3185a7f0a96bc82b
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:72
[INFO] [stderr]    2:     0x55ce2a7f1ac2 - std::panicking::default_hook::{{closure}}::h162ee7047d056245
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:60
[INFO] [stderr]                                at src/libstd/panicking.rs:210
[INFO] [stderr]    3:     0x55ce2a7f1834 - std::panicking::default_hook::h27e44ad9f5efc588
[INFO] [stderr]                                at src/libstd/panicking.rs:225
[INFO] [stderr]    4:     0x55ce2a7f2120 - std::panicking::rust_panic_with_hook::he8291f9ecfbf7e24
[INFO] [stderr]                                at src/libstd/panicking.rs:488
[INFO] [stderr]    5:     0x55ce2a7f1ca1 - std::panicking::continue_panic_fmt::h1a958f79318d5fab
[INFO] [stderr]                                at src/libstd/panicking.rs:395
[INFO] [stderr]    6:     0x55ce2a7f1b85 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:322
[INFO] [stderr]    7:     0x55ce2a80d23c - core::panicking::panic_fmt::h9c845b978aea3a48
[INFO] [stderr]                                at src/libcore/panicking.rs:95
[INFO] [stderr]    8:     0x55ce2a57e2a0 - core::result::unwrap_failed::h640988b065a610f7
[INFO] [stderr]                                at /rustc/e70472fc501b855c9080f3772432c10fe20b8866/src/libcore/macros.rs:26
[INFO] [stderr]    9:     0x55ce2a53efd9 - <core::result::Result<T, E>>::expect::h9ea5d9feec16edb5
[INFO] [stderr]                                at /rustc/e70472fc501b855c9080f3772432c10fe20b8866/src/libcore/result.rs:835
[INFO] [stderr]   10:     0x55ce2a53ddd2 - build_script_build::main::h46d1f275726f964c
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:12
[INFO] [stderr]   11:     0x55ce2a53e9df - std::rt::lang_start::{{closure}}::hd546404a480a4817
[INFO] [stderr]                                at /rustc/e70472fc501b855c9080f3772432c10fe20b8866/src/libstd/rt.rs:74
[INFO] [stderr]   12:     0x55ce2a7f1b72 - std::panicking::try::do_call::hc4b9ec7b67d70d46
[INFO] [stderr]                                at src/libstd/rt.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:307
[INFO] [stderr]   13:     0x55ce2a8050c9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:102
[INFO] [stderr]   14:     0x55ce2a7f24f3 - std::rt::lang_start_internal::h3effe680d92b51f0
[INFO] [stderr]                                at src/libstd/panicking.rs:286
[INFO] [stderr]                                at src/libstd/panic.rs:398
[INFO] [stderr]                                at src/libstd/rt.rs:58
[INFO] [stderr]   15:     0x55ce2a53e9b8 - std::rt::lang_start::hc6243a69791f602a
[INFO] [stderr]                                at /rustc/e70472fc501b855c9080f3772432c10fe20b8866/src/libstd/rt.rs:74
[INFO] [stderr]   16:     0x55ce2a53e1e9 - main
[INFO] [stderr]   17:     0x7f619893b2e0 - __libc_start_main
[INFO] [stderr]   18:     0x55ce2a53dac9 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "4ecd63eb00145ce01d26b57c6482a8318b603443ccb4a307eeaa456d9a88c7b7"`
[INFO] running `"docker" "rm" "-f" "4ecd63eb00145ce01d26b57c6482a8318b603443ccb4a307eeaa456d9a88c7b7"`
[INFO] [stdout] 4ecd63eb00145ce01d26b57c6482a8318b603443ccb4a307eeaa456d9a88c7b7