[INFO] cloning repository https://github.com/michael-swan/proveit
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michael-swan/proveit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-swan%2Fproveit"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-swan%2Fproveit'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dc84cfd69e41455775ef28b015817406f87dea02
[INFO] checking michael-swan/proveit against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-swan%2Fproveit" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michael-swan/proveit on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/michael-swan/proveit
[INFO] finished tweaking git repo https://github.com/michael-swan/proveit
[INFO] tweaked toml for git repo https://github.com/michael-swan/proveit written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/michael-swan/proveit already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTFLAGS=--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" "/opt/rustwide/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 87989d4fb279b0a4fe4c5e3d7fe734eeec3ff311e1ab5ec78276d0b2e75b452d
[INFO] running `"docker" "start" "-a" "87989d4fb279b0a4fe4c5e3d7fe734eeec3ff311e1ab5ec78276d0b2e75b452d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bindgen v0.53.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling sdl2 v0.33.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling sdl2-sys v0.33.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.6
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling clang-sys v0.29.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rust-embed-utils v5.0.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling filetime v0.2.8
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling openssl-sys v0.9.54
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rust-embed-impl v5.5.1
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]     Checking rust-embed v5.5.1
[INFO] [stderr]    Compiling skia-bindings v0.27.1
[INFO] [stderr] error: failed to run custom build command for `skia-bindings v0.27.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/skia-bindings-6d6bb6e64ef0238c/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:rerun-if-env-changed=SKIA_DEBUG
[INFO] [stderr] HOST: x86_64-unknown-linux-gnu
[INFO] [stderr] cargo:rerun-if-env-changed=FORCE_SKIA_BUILD
[INFO] [stderr] cargo:rerun-if-env-changed=FORCE_SKIA_BINARIES_DOWNLOAD
[INFO] [stderr] TRYING TO DOWNLOAD AND INSTALL SKIA BINARIES: 0.27.1/405bf3c1048b2db41e22-x86_64-unknown-linux-gnu-gl
[INFO] [stderr]   FROM: https://github.com/rust-skia/skia-binaries/releases/download/0.27.1/skia-binaries-405bf3c1048b2db41e22-x86_64-unknown-linux-gnu-gl.tar.gz
[INFO] [stderr] DOWNLOAD AND INSTALL FAILED: [6] Couldn't resolve host name
[INFO] [stderr] STARTING A FULL BUILD
[INFO] [stderr] DOWNLOADING: https://codeload.github.com/rust-skia/skia/tar.gz/m81-0.27.0
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Failed to download https://codeload.github.com/rust-skia/skia/tar.gz/m81-0.27.0 ([6] Couldn't resolve host name)', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1093:39
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x563fd298c5e5 - backtrace::backtrace::libunwind::trace::h508d2c55eb856ef2
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x563fd298c5e5 - backtrace::backtrace::trace_unsynchronized::h31c9d8a0097b92f8
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x563fd298c5e5 - std::sys_common::backtrace::_print_fmt::h520f528c4c103a3f
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x563fd298c5e5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf4dec5da8360bccb
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x563fd29b905c - core::fmt::write::hdf236390fbd68d3d
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]    5:     0x563fd29881f3 - std::io::Write::write_fmt::hd33447f61d92a88a
[INFO] [stderr]                                at src/libstd/io/mod.rs:1537
[INFO] [stderr]    6:     0x563fd298f6c0 - std::sys_common::backtrace::_print::h856c809943c588ab
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x563fd298f6c0 - std::sys_common::backtrace::print::hc042b4237cc3648a
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x563fd298f6c0 - std::panicking::default_hook::{{closure}}::h35997132c163f935
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x563fd298f40c - std::panicking::default_hook::h8555bf398b0f1318
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x563fd298fcf7 - std::panicking::rust_panic_with_hook::h9b80e82887819c44
[INFO] [stderr]                                at src/libstd/panicking.rs:486
[INFO] [stderr]   11:     0x563fd298f8fb - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:388
[INFO] [stderr]   12:     0x563fd298f86b - std::panicking::begin_panic_fmt::ha3a705fe707278db
[INFO] [stderr]                                at src/libstd/panicking.rs:342
[INFO] [stderr]   13:     0x563fd22171cd - build_script_build::build_support::skia::prerequisites::download_dependencies::{{closure}}::h8e1ac56de04beac9
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1093
[INFO] [stderr]   14:     0x563fd2222b55 - core::result::Result<T,E>::unwrap_or_else::h44c5f1f931d0848e
[INFO] [stderr]                                at /rustc/4662032ab74cd44d423120d08d251dfead4914a0/src/libcore/result.rs:853
[INFO] [stderr]   15:     0x563fd22168d5 - build_script_build::build_support::skia::prerequisites::download_dependencies::h6962991c76be75e1
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1092
[INFO] [stderr]   16:     0x563fd221606b - build_script_build::build_support::skia::prerequisites::resolve_dependencies::h839f863b03031e73
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1043
[INFO] [stderr]   17:     0x563fd21fb0bc - build_script_build::build_support::skia::build::h0e1d47c0026f5616
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:435
[INFO] [stderr]   18:     0x563fd2229301 - build_script_build::main::h5db51387181047a3
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build.rs:72
[INFO] [stderr]   19:     0x563fd221e6cb - std::rt::lang_start::{{closure}}::hf4598e7779013834
[INFO] [stderr]                                at /rustc/4662032ab74cd44d423120d08d251dfead4914a0/src/libstd/rt.rs:67
[INFO] [stderr]   20:     0x563fd2990188 - std::rt::lang_start_internal::{{closure}}::h4c8bd631e3dc2cb9
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   21:     0x563fd2990188 - std::panicking::try::do_call::h88ce8513ed0d613c
[INFO] [stderr]                                at src/libstd/panicking.rs:297
[INFO] [stderr]   22:     0x563fd2990188 - std::panicking::try::he181ad9c483671e2
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   23:     0x563fd2990188 - std::panic::catch_unwind::heb113c382f4c732f
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   24:     0x563fd2990188 - std::rt::lang_start_internal::h807304d390ed60ab
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   25:     0x563fd221e6a7 - std::rt::lang_start::h8c4049ed7e910904
[INFO] [stderr]                                at /rustc/4662032ab74cd44d423120d08d251dfead4914a0/src/libstd/rt.rs:67
[INFO] [stderr]   26:     0x563fd222a2da - main
[INFO] [stderr]   27:     0x7f2bca98b0b3 - __libc_start_main
[INFO] [stderr]   28:     0x563fd21ee0de - _start
[INFO] [stderr]   29:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "87989d4fb279b0a4fe4c5e3d7fe734eeec3ff311e1ab5ec78276d0b2e75b452d"`
[INFO] running `"docker" "rm" "-f" "87989d4fb279b0a4fe4c5e3d7fe734eeec3ff311e1ab5ec78276d0b2e75b452d"`
[INFO] [stdout] 87989d4fb279b0a4fe4c5e3d7fe734eeec3ff311e1ab5ec78276d0b2e75b452d