[INFO] crate block 0.1.6 is already in cache
[INFO] extracting crate block 0.1.6 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/block/0.1.6
[INFO] extracting crate block 0.1.6 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/block/0.1.6
[INFO] validating manifest of block-0.1.6 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of block-0.1.6 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing block-0.1.6
[INFO] removed path dependency objc_test_utils from block-0.1.6
[INFO] finished frobbing block-0.1.6
[INFO] frobbed toml for block-0.1.6 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/block/0.1.6/Cargo.toml
[INFO] started frobbing block-0.1.6
[INFO] removed path dependency objc_test_utils from block-0.1.6
[INFO] finished frobbing block-0.1.6
[INFO] frobbed toml for block-0.1.6 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/block/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking block-0.1.6 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-0/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/block/0.1.6:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c533eda5ddc1b987fac24eabc09d798b506dac31ff659fa1cfd2f24cdba94ab9
[INFO] running `"docker" "start" "-a" "c533eda5ddc1b987fac24eabc09d798b506dac31ff659fa1cfd2f24cdba94ab9"`
[INFO] [stderr]     Checking block v0.1.6 (/opt/crater/workdir)
[INFO] [stderr]    Compiling objc_test_utils v0.0.2
[INFO] [stderr] error: failed to run custom build command for `objc_test_utils v0.0.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/objc_test_utils-57655d815f33b400/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] DEBUG = Some("true")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-Wall" "-Wextra" "-o" "/opt/crater/target/debug/build/objc_test_utils-86b68daf8bf40751/out/block_utils.o" "-c" "block_utils.m"
[INFO] [stderr] cargo:warning=cc: error trying to exec 'cc1obj': execvp: No such file or directory
[INFO] [stderr] exit code: 1
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at '
[INFO] [stderr] 
[INFO] [stderr] Internal error occurred: Command "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-Wall" "-Wextra" "-o" "/opt/crater/target/debug/build/objc_test_utils-86b68daf8bf40751/out/block_utils.o" "-c" "block_utils.m" with args "cc" did not execute successfully (status code exit code: 1).
[INFO] [stderr] 
[INFO] [stderr] ', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:1672:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55700f32984b - backtrace::backtrace::libunwind::trace::h0c70a293f076b04d
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55700f32984b - backtrace::backtrace::trace_unsynchronized::h1bc693e29cfaa7b4
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55700f32984b - std::sys_common::backtrace::_print::h8e9bb00be68d4090
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55700f32984b - std::sys_common::backtrace::print::h706192507dd9d34d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55700f32984b - std::panicking::default_hook::{{closure}}::he2b558091ea21dea
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    5:     0x55700f329527 - std::panicking::default_hook::hfb9d48d2b8aaf0f5
[INFO] [stderr]                                at src/libstd/panicking.rs:212
[INFO] [stderr]    6:     0x55700f329f70 - std::panicking::rust_panic_with_hook::h56bb6d26ac5aac90
[INFO] [stderr]                                at src/libstd/panicking.rs:475
[INFO] [stderr]    7:     0x55700f329af2 - std::panicking::continue_panic_fmt::h360cf8419afe0564
[INFO] [stderr]                                at src/libstd/panicking.rs:382
[INFO] [stderr]    8:     0x55700f329a3f - std::panicking::begin_panic_fmt::hd47e0d3838ca406c
[INFO] [stderr]                                at src/libstd/panicking.rs:337
[INFO] [stderr]    9:     0x55700f2e0566 - gcc::fail::hb1b33c98b3b7fb4b
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:1672
[INFO] [stderr]   10:     0x55700f2cfc4c - gcc::Build::compile::h1eba39d172d23fbb
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:785
[INFO] [stderr]   11:     0x55700f2cb337 - gcc::compile_library::h2f481c02d884a258
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:243
[INFO] [stderr]   12:     0x55700f2cac05 - build_script_build::main::heb0889f30787b18d
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc_test_utils-0.0.2/build.rs:4
[INFO] [stderr]   13:     0x55700f2cabc0 - std::rt::lang_start::{{closure}}::h7abd0010015b1cab
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55700f3299c3 - std::rt::lang_start_internal::{{closure}}::h868ef2b3c3a15fff
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55700f3299c3 - std::panicking::try::do_call::h4528fe5c5ea34ef8
[INFO] [stderr]                                at src/libstd/panicking.rs:294
[INFO] [stderr]   16:     0x55700f331d6a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   17:     0x55700f32a47d - std::panicking::try::ha87d5378c5dcb863
[INFO] [stderr]                                at src/libstd/panicking.rs:273
[INFO] [stderr]   18:     0x55700f32a47d - std::panic::catch_unwind::hf01b748a30fdd5ec
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x55700f32a47d - std::rt::lang_start_internal::h9518341cf2ad1d33
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55700f2cab99 - std::rt::lang_start::h37ef890916d39f3d
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55700f2cac3a - main
[INFO] [stderr]   22:     0x7f93435f52e1 - __libc_start_main
[INFO] [stderr]   23:     0x55700f2ca9ca - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "c533eda5ddc1b987fac24eabc09d798b506dac31ff659fa1cfd2f24cdba94ab9"`
[INFO] running `"docker" "rm" "-f" "c533eda5ddc1b987fac24eabc09d798b506dac31ff659fa1cfd2f24cdba94ab9"`
[INFO] [stdout] c533eda5ddc1b987fac24eabc09d798b506dac31ff659fa1cfd2f24cdba94ab9