[INFO] cloning repository https://github.com/michael-swan/proveit
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-swan%2Fproveit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc84cfd69e41455775ef28b015817406f87dea02
[INFO] checking michael-swan/proveit against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichael-swan%2Fproveit" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michael-swan/proveit on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] crate git repo https://github.com/michael-swan/proveit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-embed-impl v5.5.1
[INFO] [stderr]   Downloaded bindgen v0.53.2
[INFO] [stderr]   Downloaded gl v0.14.0
[INFO] [stderr]   Downloaded rust-embed v5.5.1
[INFO] [stderr]   Downloaded sdl2-sys v0.33.0
[INFO] [stderr]   Downloaded rust-embed-utils v5.0.0
[INFO] [stderr]   Downloaded sdl2 v0.33.0
[INFO] [stderr]   Downloaded clang-sys v0.29.2
[INFO] [stderr]   Downloaded skia-safe v0.27.1
[INFO] [stderr]   Downloaded skia-bindings v0.27.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 953f2894489f98b6a47262feaed64949c152749a5f6b6b840a0b58b08721dc0f
[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" "953f2894489f98b6a47262feaed64949c152749a5f6b6b840a0b58b08721dc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "953f2894489f98b6a47262feaed64949c152749a5f6b6b840a0b58b08721dc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953f2894489f98b6a47262feaed64949c152749a5f6b6b840a0b58b08721dc0f", kill_on_drop: false }`
[INFO] [stdout] 953f2894489f98b6a47262feaed64949c152749a5f6b6b840a0b58b08721dc0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e301c94245011df2615f0e1773e69bb8bb8b57ddfb255290aea064aef895298
[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" "5e301c94245011df2615f0e1773e69bb8bb8b57ddfb255290aea064aef895298", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bindgen v0.53.2
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling sdl2 v0.33.0
[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 sdl2-sys v0.33.0
[INFO] [stderr]    Compiling clang-sys v0.29.2
[INFO] [stderr]    Compiling miniz_oxide v0.3.6
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling rust-embed-utils v5.0.0
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filetime v0.2.8
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling regex v1.3.6
[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-f3555d25d797873e/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:     0x55b1ed0c08d0 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]      1:     0x55b1ed0c08d0 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55b1ed0c08d0 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55b1ed0c08d0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55b1ed0e84bc - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/fmt/mod.rs:1076:17
[INFO] [stderr]      5:     0x55b1ed0bc0e2 - std::io::Write::write_fmt::h16a9fe7680ac245c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/io/mod.rs:1516:15
[INFO] [stderr]      6:     0x55b1ed0c3685 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55b1ed0c3685 - std::sys_common::backtrace::print::h5f20e41c85e91716
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55b1ed0c3685 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55b1ed0c3328 - std::panicking::default_hook::hb3948d1f74b6ff4c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x55b1ed0c3e21 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:593:17
[INFO] [stderr]     11:     0x55b1ed0c3967 - std::panicking::begin_panic_handler::{{closure}}::h56ae74c6dea6e141
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:499:13
[INFO] [stderr]     12:     0x55b1ed0c0d6c - std::sys_common::backtrace::__rust_end_short_backtrace::h3c4721f56689fae4
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55b1ed0c38c9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:495:5
[INFO] [stderr]     14:     0x55b1ed0c387b - std::panicking::begin_panic_fmt::h447a9fe10c3ac155
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:437:5
[INFO] [stderr]     15:     0x55b1ec949b02 - build_script_build::build_support::skia::prerequisites::download_dependencies::{{closure}}::h824459dd9b37b81f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1093:39
[INFO] [stderr]     16:     0x55b1ec9565ee - core::result::Result<T,E>::unwrap_or_else::h6fb148aaaed69912
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/result.rs:825:23
[INFO] [stderr]     17:     0x55b1ec9491e4 - build_script_build::build_support::skia::prerequisites::download_dependencies::h8492d2320b919124
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1092:27
[INFO] [stderr]     18:     0x55b1ec94899b - build_script_build::build_support::skia::prerequisites::resolve_dependencies::h889eed1f268a69b6
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:1043:13
[INFO] [stderr]     19:     0x55b1ec92917c - build_script_build::build_support::skia::build::h7307f1eeff1f90b6
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build_support/skia.rs:435:5
[INFO] [stderr]     20:     0x55b1ec954c8f - build_script_build::main::h6baede0c30da3436
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/skia-bindings-0.27.1/build.rs:72:9
[INFO] [stderr]     21:     0x55b1ec93181b - core::ops::function::FnOnce::call_once::h43e6fb0a58ab0177
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     22:     0x55b1ec93d5fe - std::sys_common::backtrace::__rust_begin_short_backtrace::hc9c18026d9817be0
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     23:     0x55b1ec9537a1 - std::rt::lang_start::{{closure}}::ha83d7ae092e3ee7d
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:66:18
[INFO] [stderr]     24:     0x55b1ed0c4337 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3f3ba5d1e0ce8d49
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     25:     0x55b1ed0c4337 - std::panicking::try::do_call::hd7a374fc87b951e7
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:381:40
[INFO] [stderr]     26:     0x55b1ed0c4337 - std::panicking::try::hcc68eba0f7d51b82
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panicking.rs:345:19
[INFO] [stderr]     27:     0x55b1ed0c4337 - std::panic::catch_unwind::h2e8cfcfcf4f9eb6d
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/panic.rs:382:14
[INFO] [stderr]     28:     0x55b1ed0c4337 - std::rt::lang_start_internal::h8ff82302dd620b52
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:51:25
[INFO] [stderr]     29:     0x55b1ec953777 - std::rt::lang_start::h5b557942c186e51c
[INFO] [stderr]                                  at /rustc/b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8/library/std/src/rt.rs:65:5
[INFO] [stderr]     30:     0x55b1ec955dfa - main
[INFO] [stderr]     31:     0x7f855b4260b3 - __libc_start_main
[INFO] [stderr]     32:     0x55b1ec91903e - _start
[INFO] [stderr]     33:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "5e301c94245011df2615f0e1773e69bb8bb8b57ddfb255290aea064aef895298", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e301c94245011df2615f0e1773e69bb8bb8b57ddfb255290aea064aef895298", kill_on_drop: false }`
[INFO] [stdout] 5e301c94245011df2615f0e1773e69bb8bb8b57ddfb255290aea064aef895298