[INFO] fetching crate ubpf-sys 0.1.1...
[INFO] extracting crate ubpf-sys 0.1.1 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ubpf-sys/0.1.1
[INFO] extracting crate ubpf-sys 0.1.1 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ubpf-sys/0.1.1
[INFO] validating manifest of ubpf-sys-0.1.1 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ubpf-sys-0.1.1 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ubpf-sys-0.1.1
[INFO] finished frobbing ubpf-sys-0.1.1
[INFO] frobbed toml for ubpf-sys-0.1.1 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ubpf-sys/0.1.1/Cargo.toml
[INFO] started frobbing ubpf-sys-0.1.1
[INFO] finished frobbing ubpf-sys-0.1.1
[INFO] frobbed toml for ubpf-sys-0.1.1 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ubpf-sys/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ubpf-sys-0.1.1 against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-5/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ubpf-sys/0.1.1:/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b7ed12fdab734ac9eb13bab717f945d618d7b8bbcc980befd8892710beffe355
[INFO] running `"docker" "start" "-a" "b7ed12fdab734ac9eb13bab717f945d618d7b8bbcc980befd8892710beffe355"`
[INFO] [stderr]    Compiling ubpf-sys v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `ubpf-sys v0.1.1 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/ubpf-sys-b12f352c8b87323d/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Please specify CROSS_COMPILE=x86_64-linux-musl- cargo build --target=x86_64-unknown-linux-musl as the 'cc' crate incorrectly looks for musl-gcc', src/build.rs:20:3
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55ad092c828b - backtrace::backtrace::libunwind::trace::hc6a4966d389b62be
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55ad092c828b - backtrace::backtrace::trace_unsynchronized::h234cd6c2c95fa587
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55ad092c828b - std::sys_common::backtrace::_print::h2896bece16680b31
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55ad092c828b - std::sys_common::backtrace::print::h5f4d4b954705d426
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55ad092c828b - std::panicking::default_hook::{{closure}}::h3d52949e2d73c1aa
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    5:     0x55ad092c7f8c - std::panicking::default_hook::h4b88c02cc00064f5
[INFO] [stderr]                                at src/libstd/panicking.rs:212
[INFO] [stderr]    6:     0x55ad092c8950 - std::panicking::rust_panic_with_hook::he5596ad1952b7279
[INFO] [stderr]                                at src/libstd/panicking.rs:475
[INFO] [stderr]    7:     0x55ad092b43f4 - std::panicking::begin_panic::ha6270018cf029366
[INFO] [stderr]                                at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/panicking.rs:409
[INFO] [stderr]    8:     0x55ad092bb159 - build_script_build::tool::h58a84dae0c6f354a
[INFO] [stderr]                                at src/build.rs:20
[INFO] [stderr]    9:     0x55ad092bafab - build_script_build::main::had38677f123d1544
[INFO] [stderr]                                at src/build.rs:13
[INFO] [stderr]   10:     0x55ad092b2800 - std::rt::lang_start::{{closure}}::h0fe299a91ac76bde
[INFO] [stderr]                                at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64
[INFO] [stderr]   11:     0x55ad092c83a3 - std::rt::lang_start_internal::{{closure}}::h97d240c87982728f
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   12:     0x55ad092c83a3 - std::panicking::try::do_call::h657ecdd23710c935
[INFO] [stderr]                                at src/libstd/panicking.rs:294
[INFO] [stderr]   13:     0x55ad092ce7ba - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   14:     0x55ad092c8e5d - std::panicking::try::h52772d620cb80373
[INFO] [stderr]                                at src/libstd/panicking.rs:273
[INFO] [stderr]   15:     0x55ad092c8e5d - std::panic::catch_unwind::hac02eb84ea8f3a3e
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   16:     0x55ad092c8e5d - std::rt::lang_start_internal::h9fab34d7c96dfdc9
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   17:     0x55ad092b27d9 - std::rt::lang_start::h37ccd746c987ed23
[INFO] [stderr]                                at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x55ad092bbc2a - main
[INFO] [stderr]   19:     0x7f5f338352e1 - __libc_start_main
[INFO] [stderr]   20:     0x55ad092afcda - _start
[INFO] [stderr]   21:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "b7ed12fdab734ac9eb13bab717f945d618d7b8bbcc980befd8892710beffe355"`
[INFO] running `"docker" "rm" "-f" "b7ed12fdab734ac9eb13bab717f945d618d7b8bbcc980befd8892710beffe355"`
[INFO] [stdout] b7ed12fdab734ac9eb13bab717f945d618d7b8bbcc980befd8892710beffe355