[INFO] cloning repository https://github.com/fChristenson/pong-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fChristenson/pong-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfChristenson%2Fpong-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfChristenson%2Fpong-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acc5fd1e2089508eb803a432bbb4d2a008b79fdb
[INFO] documenting fChristenson/pong-rs against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FfChristenson%2Fpong-rs" "/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/fChristenson/pong-rs on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fChristenson/pong-rs
[INFO] finished tweaking git repo https://github.com/fChristenson/pong-rs
[INFO] tweaked toml for git repo https://github.com/fChristenson/pong-rs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/fChristenson/pong-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[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" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47b8c6e4a8c69f101bcc342b664c234ae9d886ec55d85abf00f0ca07fd50494f
[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" "47b8c6e4a8c69f101bcc342b664c234ae9d886ec55d85abf00f0ca07fd50494f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b8c6e4a8c69f101bcc342b664c234ae9d886ec55d85abf00f0ca07fd50494f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b8c6e4a8c69f101bcc342b664c234ae9d886ec55d85abf00f0ca07fd50494f", kill_on_drop: false }`
[INFO] [stdout] 47b8c6e4a8c69f101bcc342b664c234ae9d886ec55d85abf00f0ca07fd50494f
[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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d625c83dd874c0c377404b837e6281b6a5e65a353fea0963a6039c7df7dee60e
[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" "d625c83dd874c0c377404b837e6281b6a5e65a353fea0963a6039c7df7dee60e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]     Checking atom v0.3.5
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling core-foundation-sys v0.6.2
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking mint v0.5.1
[INFO] [stderr]     Checking block v0.1.6
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling gfx-backend-metal v0.2.3
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]     Checking range-alloc v0.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]     Checking shrev v1.1.1
[INFO] [stderr]    Compiling edit-distance v2.1.0
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking objekt v0.1.2
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.17
[INFO] [stderr]     Checking static_assertions v0.3.3
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking rgb v0.8.13
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking fluent-locale v0.4.1
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.2.3
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking matrixmultiply v0.2.2
[INFO] [stderr]     Checking annotate-snippets v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr] error: failed to run custom build command for `gfx-backend-metal v0.2.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/gfx-backend-metal-9e283b4094b24e7f/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'unsupported target x86_64-unknown-linux-gnu', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gfx-backend-metal-0.2.3/build.rs:17:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55e293a03f05 - backtrace::backtrace::libunwind::trace::h14d338b30b3ea0a7
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x55e293a03f05 - backtrace::backtrace::trace_unsynchronized::h73ea91d74a3fd67f
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55e293a03f05 - std::sys_common::backtrace::_print_fmt::hd42948c952866e12
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x55e293a03f05 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha8f928866ff7571e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x55e293a2599c - core::fmt::write::he0c1e5f7426d2718
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x55e293a014b2 - std::io::Write::write_fmt::hf3afc6cfd57d0033
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x55e293a06340 - std::sys_common::backtrace::_print::hfc0110703f3696fd
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x55e293a06340 - std::sys_common::backtrace::print::h3f77c6990ddfaa22
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x55e293a06340 - std::panicking::default_hook::{{closure}}::heae49580a8d62d75
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x55e293a0608c - std::panicking::default_hook::hecc34e3f729e213c
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x55e293a06983 - std::panicking::rust_panic_with_hook::he82f5d0644692441
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x55e293a0657b - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x55e293a064eb - std::panicking::begin_panic_fmt::h905a6d44880d49ef
[INFO] [stderr]                                  at src/libstd/panicking.rs:391
[INFO] [stderr]     13:     0x55e2939eba4a - build_script_build::main::h6ecfb458b20a97a9
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gfx-backend-metal-0.2.3/build.rs:17
[INFO] [stderr]     14:     0x55e2939f081b - std::rt::lang_start::{{closure}}::hd17c69bc880fad17
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     15:     0x55e293a06d53 - std::rt::lang_start_internal::{{closure}}::h5d3ea623498f5f43
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     16:     0x55e293a06d53 - std::panicking::try::do_call::hac65e71be769a440
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     17:     0x55e293a06d53 - std::panicking::try::hd4706e264bcf6712
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     18:     0x55e293a06d53 - std::panic::catch_unwind::h948a0fb4a8b3ee82
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     19:     0x55e293a06d53 - std::rt::lang_start_internal::h72cc068ed2d0ac53
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     20:     0x55e2939f07f7 - std::rt::lang_start::h70635783994c4be0
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     21:     0x55e2939ed01a - main
[INFO] [stderr]     22:     0x7f68a5be00b3 - __libc_start_main
[INFO] [stderr]     23:     0x55e2939ea17e - _start
[INFO] [stderr]     24:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d625c83dd874c0c377404b837e6281b6a5e65a353fea0963a6039c7df7dee60e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d625c83dd874c0c377404b837e6281b6a5e65a353fea0963a6039c7df7dee60e", kill_on_drop: false }`
[INFO] [stdout] d625c83dd874c0c377404b837e6281b6a5e65a353fea0963a6039c7df7dee60e