[INFO] fetching crate cntk 0.2.1...
[INFO] checking cntk-0.2.1 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate cntk 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate cntk 0.2.1 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cntk 0.2.1
[INFO] finished tweaking crates.io crate cntk 0.2.1
[INFO] tweaked toml for crates.io crate cntk 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages
[INFO] [stderr]       Adding aho-corasick v0.6.10 (latest: v1.1.3)
[INFO] [stderr]       Adding cpp v0.3.2 (latest: v0.5.9)
[INFO] [stderr]       Adding cpp_build v0.3.2 (latest: v0.5.9)
[INFO] [stderr]       Adding cpp_common v0.3.2 (latest: v0.5.9)
[INFO] [stderr]       Adding cpp_macros v0.3.2 (latest: v0.5.9)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.12.1)
[INFO] [stderr]       Adding lazy_static v0.2.11 (latest: v1.4.0)
[INFO] [stderr]       Adding matrixmultiply v0.1.15 (latest: v0.3.8)
[INFO] [stderr]       Adding memchr v1.0.2 (latest: v2.7.2)
[INFO] [stderr]       Adding mnist v0.4.1 (latest: v0.6.0)
[INFO] [stderr]       Adding ndarray v0.10.14 (latest: v0.15.6)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding quote v0.3.15 (latest: v1.0.36)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rawpointer v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding regex v0.2.11 (latest: v1.10.4)
[INFO] [stderr]       Adding regex-syntax v0.5.6 (latest: v0.8.3)
[INFO] [stderr]       Adding thread_local v0.3.6 (latest: v1.1.8)
[INFO] [stderr]       Adding ucd-util v0.1.10 (latest: v0.2.1)
[INFO] [stderr]       Adding unicode-xid v0.0.4 (latest: v0.2.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.4.1
[INFO] [stderr]   Downloaded ndarray v0.10.14
[INFO] [stderr]   Downloaded cpp_synmap v0.3.0
[INFO] [stderr]   Downloaded cpp_common v0.3.2
[INFO] [stderr]   Downloaded cpp_macros v0.3.2
[INFO] [stderr]   Downloaded cpp_synom v0.12.0
[INFO] [stderr]   Downloaded cpp_syn v0.12.0
[INFO] [stderr]   Downloaded cpp v0.3.2
[INFO] [stderr]   Downloaded cpp_build v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00bb9eabe6231b1a1b1f35cece7d434a4fa29e17ceaa5d70c94282274d104985
[INFO] running `Command { std: "docker" "start" "-a" "00bb9eabe6231b1a1b1f35cece7d434a4fa29e17ceaa5d70c94282274d104985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00bb9eabe6231b1a1b1f35cece7d434a4fa29e17ceaa5d70c94282274d104985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00bb9eabe6231b1a1b1f35cece7d434a4fa29e17ceaa5d70c94282274d104985", kill_on_drop: false }`
[INFO] [stdout] 00bb9eabe6231b1a1b1f35cece7d434a4fa29e17ceaa5d70c94282274d104985
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f1bf3cd5478789b2ee40b543d4371616f5bb8d7bcc5c6cade5339ba23e567cc
[INFO] running `Command { std: "docker" "start" "-a" "3f1bf3cd5478789b2ee40b543d4371616f5bb8d7bcc5c6cade5339ba23e567cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cpp_synom v0.12.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking mnist v0.4.1
[INFO] [stderr]    Compiling cpp_syn v0.12.0
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling cpp_common v0.3.2
[INFO] [stderr]    Compiling cpp_synmap v0.3.0
[INFO] [stderr]    Compiling cpp_build v0.3.2
[INFO] [stderr]    Compiling cpp_macros v0.3.2
[INFO] [stderr]    Compiling cntk v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cpp v0.3.2
[INFO] [stderr] error: failed to run custom build command for `cntk v0.2.1 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cntk-b2295949bfb52bb1/build-script-build` (exit status: 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]   TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr]   HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr]   CXXFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr]   CXXFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr]   HOST_CXXFLAGS = None
[INFO] [stderr]   CXXFLAGS = None
[INFO] [stderr]   DEBUG = Some("true")
[INFO] [stderr]   running: "g++-4.8" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "/opt/rustwide/workdir" "-std=c++11" "-Wall" "-Wextra" "-o" "/opt/rustwide/target/debug/build/cntk-b2609048c7a0550a/out/rust_cpp/cpp_closures.o" "-c" "/opt/rustwide/target/debug/build/cntk-b2609048c7a0550a/out/rust_cpp/cpp_closures.cpp"
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/gcc-0.3.55/src/lib.rs:1672:5:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   Internal error occurred: Failed to find tool. Is `g++-4.8` installed?
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55f5435559a5 - std::backtrace_rs::backtrace::libunwind::trace::hc0846b9d5d734da3
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x55f5435559a5 - std::backtrace_rs::backtrace::trace_unsynchronized::haaeb5c07fc5f1c16
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55f5435559a5 - std::sys_common::backtrace::_print_fmt::hf422d8687c118c78
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x55f5435559a5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h826b8e7caae31c92
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55f543579a3b - core::fmt::rt::Argument::fmt::ha5794cc754ea58dc
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/fmt/rt.rs:142:9
[INFO] [stderr]      5:     0x55f543579a3b - core::fmt::write::h90bf88fced7d7a85
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/fmt/mod.rs:1153:17
[INFO] [stderr]      6:     0x55f543552a2f - std::io::Write::write_fmt::h0542e06a2975a65e
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/io/mod.rs:1850:15
[INFO] [stderr]      7:     0x55f54355577e - std::sys_common::backtrace::_print::h6c5d0ea7000c081f
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x55f54355577e - std::sys_common::backtrace::print::h8cc61d3d9cfe4b43
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x55f543556dd9 - std::panicking::default_hook::{{closure}}::ha840b187609a73dc
[INFO] [stderr]     10:     0x55f543556af5 - std::panicking::default_hook::h64931701a8dfbeb5
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:291:9
[INFO] [stderr]     11:     0x55f543557274 - std::panicking::rust_panic_with_hook::h0fc054ea3f5b1656
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:788:13
[INFO] [stderr]     12:     0x55f543557156 - std::panicking::begin_panic_handler::{{closure}}::hd39fcf318858b44e
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:657:13
[INFO] [stderr]     13:     0x55f543555e69 - std::sys_common::backtrace::__rust_end_short_backtrace::h41bac59379df1622
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x55f543556e87 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:645:5
[INFO] [stderr]     15:     0x55f5433d61a6 - core::panicking::panic_fmt::h7b8f1967fb403697
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x55f5433f8511 - gcc::fail::h53eaddb56b45d6cd
[INFO] [stderr]     17:     0x55f5433eb78f - gcc::Build::compile::h5ee0d203c8fa6897
[INFO] [stderr]     18:     0x55f5433db199 - cpp_build::Config::build::h2fec36d5154354b9
[INFO] [stderr]     19:     0x55f5433db353 - build_script_build::main::hc22b2527fca3df0d
[INFO] [stderr]     20:     0x55f5433d6f13 - core::ops::function::FnOnce::call_once::h83f5f922d8d2943f
[INFO] [stderr]     21:     0x55f5433d6c36 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0621054644d182f6
[INFO] [stderr]     22:     0x55f5433d6cf9 - std::rt::lang_start::{{closure}}::h9d8c4d7b53f15808
[INFO] [stderr]     23:     0x55f54354eb46 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h49d0eb024581c58d
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     24:     0x55f54354eb46 - std::panicking::try::do_call::h216b6896714a987d
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:552:40
[INFO] [stderr]     25:     0x55f54354eb46 - std::panicking::try::h4bac5f28dc782f91
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:516:19
[INFO] [stderr]     26:     0x55f54354eb46 - std::panic::catch_unwind::h2a45431533d7ee9c
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panic.rs:149:14
[INFO] [stderr]     27:     0x55f54354eb46 - std::rt::lang_start_internal::{{closure}}::h93ba00e1aef300e8
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/rt.rs:141:48
[INFO] [stderr]     28:     0x55f54354eb46 - std::panicking::try::do_call::hbeece6a5e5d1de22
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:552:40
[INFO] [stderr]     29:     0x55f54354eb46 - std::panicking::try::h48d13e3c46df2cb2
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panicking.rs:516:19
[INFO] [stderr]     30:     0x55f54354eb46 - std::panic::catch_unwind::he1a369a4d9ab7488
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/panic.rs:149:14
[INFO] [stderr]     31:     0x55f54354eb46 - std::rt::lang_start_internal::h5fddfc687b4198c5
[INFO] [stderr]                                  at /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/rt.rs:141:20
[INFO] [stderr]     32:     0x55f5433d6cd7 - std::rt::lang_start::h9a3ae25a13a146fe
[INFO] [stderr]     33:     0x55f5433db3c5 - main
[INFO] [stderr]     34:     0x7fdb2d287d90 - <unknown>
[INFO] [stderr]     35:     0x7fdb2d287e40 - __libc_start_main
[INFO] [stderr]     36:     0x55f5433d68f5 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "3f1bf3cd5478789b2ee40b543d4371616f5bb8d7bcc5c6cade5339ba23e567cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1bf3cd5478789b2ee40b543d4371616f5bb8d7bcc5c6cade5339ba23e567cc", kill_on_drop: false }`
[INFO] [stdout] 3f1bf3cd5478789b2ee40b543d4371616f5bb8d7bcc5c6cade5339ba23e567cc
