[INFO] cloning repository https://github.com/rohansaw/Tetrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rohansaw/Tetrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohansaw%2FTetrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohansaw%2FTetrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 074fc42ac8e3462c88ae29b0747d2fb51e7d6da5
[INFO] documenting rohansaw/Tetrust against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frohansaw%2FTetrust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rohansaw/Tetrust on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rohansaw/Tetrust
[INFO] finished tweaking git repo https://github.com/rohansaw/Tetrust
[INFO] tweaked toml for git repo https://github.com/rohansaw/Tetrust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/rohansaw/Tetrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28da8c260af14c1772f148bac368787f77648905c8089e92a411e3f263f06445
[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" "28da8c260af14c1772f148bac368787f77648905c8089e92a411e3f263f06445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28da8c260af14c1772f148bac368787f77648905c8089e92a411e3f263f06445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28da8c260af14c1772f148bac368787f77648905c8089e92a411e3f263f06445", kill_on_drop: false }`
[INFO] [stdout] 28da8c260af14c1772f148bac368787f77648905c8089e92a411e3f263f06445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e753f79bff038a2394e2283a438cf8e104a049edfd2d9413105987d5a178aa9
[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" "0e753f79bff038a2394e2283a438cf8e104a049edfd2d9413105987d5a178aa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling core-foundation-sys v0.6.2
[INFO] [stderr]     Checking block v0.1.6
[INFO] [stderr]    Compiling gfx-backend-metal v0.3.3
[INFO] [stderr]     Checking range-alloc v0.1.1
[INFO] [stderr]     Checking mint v0.5.5
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking tuple_utils v0.3.0
[INFO] [stderr]     Checking shrev v1.1.1
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling edit-distance v2.1.0
[INFO] [stderr]    Compiling tinystr v0.3.4
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking objekt v0.1.2
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking xi-unicode v0.2.1
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking fluent-syntax v0.9.3
[INFO] [stderr]     Checking dunce v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling unic-langid-impl v0.8.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking storage-map v0.2.0
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr] error: failed to run custom build command for `gfx-backend-metal v0.3.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/gfx-backend-metal-3ef72d7fbf9f48b3/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-0.3.3/build.rs:17:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5650cf7b2d80 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x5650cf7b2d80 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x5650cf7b2d80 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x5650cf7b2d80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x5650cf7d00fc - core::fmt::write::h9ddafa4860d8adff
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stderr]      5:     0x5650cf7b0767 - std::io::Write::write_fmt::h1d2ee292d2b65481
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stderr]      6:     0x5650cf7b4e50 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x5650cf7b4e50 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x5650cf7b4e50 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stderr]      9:     0x5650cf7b4b9c - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:219
[INFO] [stderr]     10:     0x5650cf7b54b3 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stderr]     11:     0x5650cf7b5089 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stderr]     12:     0x5650cf7b320c - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x5650cf7b5049 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stderr]     14:     0x5650cf7b4ffb - std::panicking::begin_panic_fmt::hc1b1320af38b7e12
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429
[INFO] [stderr]     15:     0x5650cf78e96a - build_script_build::main::he1ecc66d780316c1
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gfx-backend-metal-0.3.3/build.rs:17
[INFO] [stderr]     16:     0x5650cf79123b - core::ops::function::FnOnce::call_once::hfc19951ffb821942
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stderr]     17:     0x5650cf798a4e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb4fabce5196043b0
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     18:     0x5650cf79c191 - std::rt::lang_start::{{closure}}::hdc9ecaa3c1fb7492
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:66
[INFO] [stderr]     19:     0x5650cf7b58b1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a3209f124be2235
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:259
[INFO] [stderr]     20:     0x5650cf7b58b1 - std::panicking::try::do_call::h88ce358792b64df0
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stderr]     21:     0x5650cf7b58b1 - std::panicking::try::h6311c259678e50fc
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stderr]     22:     0x5650cf7b58b1 - std::panic::catch_unwind::h56c5716807d659a1
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stderr]     23:     0x5650cf7b58b1 - std::rt::lang_start_internal::h73711f37ecfcb277
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:51
[INFO] [stderr]     24:     0x5650cf79c167 - std::rt::lang_start::h288ab72843cde52b
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:65
[INFO] [stderr]     25:     0x5650cf78ff3a - main
[INFO] [stderr]     26:     0x7eff3d5660b3 - __libc_start_main
[INFO] [stderr]     27:     0x5650cf78d0ae - _start
[INFO] [stderr]     28:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0e753f79bff038a2394e2283a438cf8e104a049edfd2d9413105987d5a178aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e753f79bff038a2394e2283a438cf8e104a049edfd2d9413105987d5a178aa9", kill_on_drop: false }`
[INFO] [stdout] 0e753f79bff038a2394e2283a438cf8e104a049edfd2d9413105987d5a178aa9
