[INFO] crate block 0.1.6 is already in cache
[INFO] extracting crate block 0.1.6 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/block/0.1.6
[INFO] extracting crate block 0.1.6 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/block/0.1.6
[INFO] validating manifest of block-0.1.6 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 block-0.1.6 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 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-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/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-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/block/0.1.6/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 block-0.1.6 against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 58413207b9c27f8c0c820748c1187fe1231a74a88686133e1e59c36a0d777a84
[INFO] running `"docker" "start" "-a" "58413207b9c27f8c0c820748c1187fe1231a74a88686133e1e59c36a0d777a84"`
[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-fed9e8aee9dfdb4e/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-67eac631758c92e0/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-67eac631758c92e0/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:     0x561ec6fa1ffb - backtrace::backtrace::libunwind::trace::h4f04af92f39f2b78
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x561ec6fa1ffb - backtrace::backtrace::trace_unsynchronized::hb28ce8d2b7fb3e31
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x561ec6fa1ffb - std::sys_common::backtrace::_print::he3f49d2d13a51ff1
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x561ec6fa1ffb - std::sys_common::backtrace::print::h46c2f3b13519e9bf
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x561ec6fa1ffb - std::panicking::default_hook::{{closure}}::h6694acddafc67583
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x561ec6fa1cd7 - std::panicking::default_hook::hb4761d2feeb6d93c
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x561ec6fa2720 - std::panicking::rust_panic_with_hook::h7a5f9620b0a832bc
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x561ec6fa22a2 - std::panicking::continue_panic_fmt::h76588b16c9674f9c
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x561ec6fa21ef - std::panicking::begin_panic_fmt::h5cc9fd38dd5f7178
[INFO] [stderr]                                at src/libstd/panicking.rs:339
[INFO] [stderr]    9:     0x561ec6f58a56 - gcc::fail::hfb41ad84e5f03ed5
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:1672
[INFO] [stderr]   10:     0x561ec6f4811c - gcc::Build::compile::h4de8bedf798e6d0e
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:785
[INFO] [stderr]   11:     0x561ec6f43807 - gcc::compile_library::hce1a9b255634dbed
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:243
[INFO] [stderr]   12:     0x561ec6f43055 - build_script_build::main::hb5dad373f85e1e28
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc_test_utils-0.0.2/build.rs:4
[INFO] [stderr]   13:     0x561ec6f43010 - std::rt::lang_start::{{closure}}::h55d4d2223a8b8eaa
[INFO] [stderr]                                at /rustc/78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x561ec6fa2173 - std::rt::lang_start_internal::{{closure}}::h32e298b4b9152770
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x561ec6fa2173 - std::panicking::try::do_call::hc8de7cda8a6a61da
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x561ec6faa51a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   17:     0x561ec6fa2c2d - std::panicking::try::h2d3ab36572ae54da
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x561ec6fa2c2d - std::panic::catch_unwind::h4b587439b0094333
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x561ec6fa2c2d - std::rt::lang_start_internal::h0772ca1bc29dd619
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x561ec6f42fe9 - std::rt::lang_start::h3f18bac4e9480c89
[INFO] [stderr]                                at /rustc/78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x561ec6f4308a - main
[INFO] [stderr]   22:     0x7f262b6e82e1 - __libc_start_main
[INFO] [stderr]   23:     0x561ec6f42e9a - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "58413207b9c27f8c0c820748c1187fe1231a74a88686133e1e59c36a0d777a84"`
[INFO] running `"docker" "rm" "-f" "58413207b9c27f8c0c820748c1187fe1231a74a88686133e1e59c36a0d777a84"`
[INFO] [stdout] 58413207b9c27f8c0c820748c1187fe1231a74a88686133e1e59c36a0d777a84