[INFO] updating cached repository https://github.com/kasper0406/neuralnetwork
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 848aac140f26e660aa96adf3bc3d1cbc1fd45a86
[INFO] documenting kasper0406/neuralnetwork against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkasper0406%2Fneuralnetwork" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kasper0406/neuralnetwork on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kasper0406/neuralnetwork
[INFO] finished tweaking git repo https://github.com/kasper0406/neuralnetwork
[INFO] tweaked toml for git repo https://github.com/kasper0406/neuralnetwork written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/kasper0406/neuralnetwork already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78dd1e62ce325407d3178ff70d8c8629aa825f4c40e9477710ec4e0868a633ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "78dd1e62ce325407d3178ff70d8c8629aa825f4c40e9477710ec4e0868a633ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78dd1e62ce325407d3178ff70d8c8629aa825f4c40e9477710ec4e0868a633ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78dd1e62ce325407d3178ff70d8c8629aa825f4c40e9477710ec4e0868a633ba", kill_on_drop: false }`
[INFO] [stdout] 78dd1e62ce325407d3178ff70d8c8629aa825f4c40e9477710ec4e0868a633ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6b5e5b7a5e33463c089d02a11dc99dbf27789a85584699c20e002e08d64ff49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c6b5e5b7a5e33463c089d02a11dc99dbf27789a85584699c20e002e08d64ff49", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling digits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling objc_exception v0.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.0
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking core-foundation-sys v0.6.2
[INFO] [stderr]     Checking lock_api v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]     Checking futures-core-preview v0.2.3
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: cc: fatal error: cannot execute 'cc1obj': execvp: No such file or directory
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `objc_exception v0.1.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/objc_exception-82f5d29b2dec3ff0/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/rustwide/target/debug/build/objc_exception-74c95ca50974b483/out/extern/exception.o" "-c" "extern/exception.m"
[INFO] [stderr] cargo:warning=cc: fatal error: cannot execute 'cc1obj': execvp: No such file or directory
[INFO] [stderr] cargo:warning=compilation terminated.
[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/rustwide/target/debug/build/objc_exception-74c95ca50974b483/out/extern/exception.o" "-c" "extern/exception.m" with args "cc" did not execute successfully (status code exit code: 1).
[INFO] [stderr] 
[INFO] [stderr] ', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:1672:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x557420680d05 - backtrace::backtrace::libunwind::trace::h34afbfad7fd770fc
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x557420680d05 - backtrace::backtrace::trace_unsynchronized::h460d522b1619a600
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x557420680d05 - std::sys_common::backtrace::_print_fmt::ha45fac10086813b4
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x557420680d05 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde84f63fcfd0e6de
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x5574206a57ec - core::fmt::write::h540ac4a6a1232abc
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]    5:     0x55742067cfb3 - std::io::Write::write_fmt::hc344eafd6e850b4d
[INFO] [stderr]                                at src/libstd/io/mod.rs:1537
[INFO] [stderr]    6:     0x557420683560 - std::sys_common::backtrace::_print::h4db88ff15cb5d61d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x557420683560 - std::sys_common::backtrace::print::h5fc39e1b1f610bd3
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x557420683560 - std::panicking::default_hook::{{closure}}::h59e55edacb1d974a
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x5574206832ac - std::panicking::default_hook::heee4c8016dfbf328
[INFO] [stderr]                                at src/libstd/panicking.rs:217
[INFO] [stderr]   10:     0x557420683ba3 - std::panicking::rust_panic_with_hook::h8405b6301c79fb5a
[INFO] [stderr]                                at src/libstd/panicking.rs:520
[INFO] [stderr]   11:     0x55742068379b - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:431
[INFO] [stderr]   12:     0x55742068370b - std::panicking::begin_panic_fmt::h0ed87aa3b2c392e6
[INFO] [stderr]                                at src/libstd/panicking.rs:385
[INFO] [stderr]   13:     0x557420649b07 - gcc::fail::h16fbc7a752cf116a
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:1672
[INFO] [stderr]   14:     0x55742063b6fe - gcc::Build::compile::h61e78d1bd34cb524
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:785
[INFO] [stderr]   15:     0x557420637a93 - gcc::compile_library::hcc73a4b92b8b473e
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.55/src/lib.rs:243
[INFO] [stderr]   16:     0x557420637285 - build_script_build::main::h845f4bcbc4603f3d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc_exception-0.1.1/build.rs:4
[INFO] [stderr]   17:     0x55742063736b - std::rt::lang_start::{{closure}}::h26ff43cc1c771ad3
[INFO] [stderr]                                at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/libstd/rt.rs:67
[INFO] [stderr]   18:     0x557420683f78 - std::rt::lang_start_internal::{{closure}}::h7cea099ad4edf1eb
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   19:     0x557420683f78 - std::panicking::try::do_call::h42d93372c44025d2
[INFO] [stderr]                                at src/libstd/panicking.rs:342
[INFO] [stderr]   20:     0x557420683f78 - std::panicking::try::hb47a4182362d3341
[INFO] [stderr]                                at src/libstd/panicking.rs:319
[INFO] [stderr]   21:     0x557420683f78 - std::panic::catch_unwind::h2afcfbf3125915b4
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   22:     0x557420683f78 - std::rt::lang_start_internal::h4f696727fe904f48
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   23:     0x557420637347 - std::rt::lang_start::h5e44109417f84233
[INFO] [stderr]                                at /rustc/394e1b40d264aa6928811919c1124fa248e7d802/src/libstd/rt.rs:67
[INFO] [stderr]   24:     0x5574206372ba - main
[INFO] [stderr]   25:     0x7fdbd21b00b3 - __libc_start_main
[INFO] [stderr]   26:     0x55742063719e - _start
[INFO] [stderr]   27:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c6b5e5b7a5e33463c089d02a11dc99dbf27789a85584699c20e002e08d64ff49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6b5e5b7a5e33463c089d02a11dc99dbf27789a85584699c20e002e08d64ff49", kill_on_drop: false }`
[INFO] [stdout] c6b5e5b7a5e33463c089d02a11dc99dbf27789a85584699c20e002e08d64ff49