[INFO] cloning repository https://github.com/kmkzt/practice_amethyst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kmkzt/practice_amethyst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmkzt%2Fpractice_amethyst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmkzt%2Fpractice_amethyst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d08f88d0de221f5eb7c316ffa0814ab46ed78c9c
[INFO] documenting kmkzt/practice_amethyst against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmkzt%2Fpractice_amethyst" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kmkzt/practice_amethyst on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kmkzt/practice_amethyst
[INFO] finished tweaking git repo https://github.com/kmkzt/practice_amethyst
[INFO] tweaked toml for git repo https://github.com/kmkzt/practice_amethyst written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kmkzt/practice_amethyst already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 943a7020a2bfb78c6db2ae62c5862e58e2e24cd13c230ce4f58c7ef76590dee8
[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" "943a7020a2bfb78c6db2ae62c5862e58e2e24cd13c230ce4f58c7ef76590dee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "943a7020a2bfb78c6db2ae62c5862e58e2e24cd13c230ce4f58c7ef76590dee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943a7020a2bfb78c6db2ae62c5862e58e2e24cd13c230ce4f58c7ef76590dee8", kill_on_drop: false }`
[INFO] [stdout] 943a7020a2bfb78c6db2ae62c5862e58e2e24cd13c230ce4f58c7ef76590dee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a3244b255898b749006d30a8a218ae7c89b8e1ed195c499faad9f987969f1c5
[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" "3a3244b255898b749006d30a8a218ae7c89b8e1ed195c499faad9f987969f1c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling arrayvec v0.4.11
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[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking mint v0.5.1
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking indexmap v1.2.0
[INFO] [stderr]    Compiling encoding_rs v0.8.19
[INFO] [stderr]     Checking fluent-locale v0.4.1
[INFO] [stderr]     Checking fluent-syntax v0.9.0
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking claxon v0.4.2
[INFO] [stderr]     Checking xi-unicode v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]    Compiling alsa-sys v0.1.2
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[INFO] [stderr]     Checking rand_core v0.3.1
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[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.3.2
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[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling error-chain v0.12.1
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[INFO] [stderr]     Checking rand_xorshift v0.1.1
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[INFO] [stderr]     Checking rand_isaac v0.1.1
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[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.5.6
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[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking uname v0.1.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling err-derive v0.1.5
[INFO] [stderr]    Compiling lexical-core v0.4.5
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[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
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[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_chacha v0.1.1
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[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]     Checking openssl-sys v0.9.49
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking sized-chunks v0.1.3
[INFO] [stderr]     Checking intl_pluralrules v1.0.3
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustc_version_runtime-d6484f3a2e83aaaa/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55cc14c5bc20 - std::backtrace_rs::backtrace::libunwind::trace::h9e3e6d9b3369e699
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x55cc14c5bc20 - std::backtrace_rs::backtrace::trace_unsynchronized::he58aba3ac08ed12a
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55cc14c5bc20 - std::sys_common::backtrace::_print_fmt::hbbbd4c92d537cef4
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x55cc14c5bc20 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h80c2ae080004cc83
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x55cc14c7925c - core::fmt::write::h0c11e16fd03fe660
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/fmt/mod.rs:1082
[INFO] [stderr]      5:     0x55cc14c598e7 - std::io::Write::write_fmt::h2e2072ff86131fcd
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/io/mod.rs:1514
[INFO] [stderr]      6:     0x55cc14c5dcf0 - std::sys_common::backtrace::_print::h165e6476adb4cb58
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x55cc14c5dcf0 - std::sys_common::backtrace::print::hbbfa32a92cd1fc34
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x55cc14c5dcf0 - std::panicking::default_hook::{{closure}}::h3a02067ca7f64068
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:200
[INFO] [stderr]      9:     0x55cc14c5da3c - std::panicking::default_hook::ha3137d6f4e961fe2
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:219
[INFO] [stderr]     10:     0x55cc14c5e353 - std::panicking::rust_panic_with_hook::he6505c3b9d82db8b
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:569
[INFO] [stderr]     11:     0x55cc14c5df29 - std::panicking::begin_panic_handler::{{closure}}::h4aa640a9e8494520
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:476
[INFO] [stderr]     12:     0x55cc14c5c08c - std::sys_common::backtrace::__rust_end_short_backtrace::h85d2ae6a90dead9c
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x55cc14c5dee9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:475
[INFO] [stderr]     14:     0x55cc14c78581 - core::panicking::panic_fmt::hbf8b471a26c80149
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/panicking.rs:85
[INFO] [stderr]     15:     0x55cc14c783a3 - core::option::expect_none_failed::hd08bf36cae411fff
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/option.rs:1221
[INFO] [stderr]     16:     0x55cc14c28f09 - core::result::Result<T,E>::unwrap::habc486566f308626
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/result.rs:973
[INFO] [stderr]     17:     0x55cc14c25735 - build_script_build::main::h6d8c5e8abddb3a9f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27
[INFO] [stderr]     18:     0x55cc14c270eb - core::ops::function::FnOnce::call_once::hcd39f0c8e644fbde
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/ops/function.rs:227
[INFO] [stderr]     19:     0x55cc14c26fbe - std::sys_common::backtrace::__rust_begin_short_backtrace::h5af63c0dbb88a5b7
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     20:     0x55cc14c275d1 - std::rt::lang_start::{{closure}}::h9dee4a081cfebb70
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:66
[INFO] [stderr]     21:     0x55cc14c5e751 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hdabbbe0d2c6ccde8
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/ops/function.rs:259
[INFO] [stderr]     22:     0x55cc14c5e751 - std::panicking::try::do_call::h0c8c1cd19bf9d385
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:373
[INFO] [stderr]     23:     0x55cc14c5e751 - std::panicking::try::h357e78da017bc4a8
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:337
[INFO] [stderr]     24:     0x55cc14c5e751 - std::panic::catch_unwind::h72f31b36adf61841
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panic.rs:379
[INFO] [stderr]     25:     0x55cc14c5e751 - std::rt::lang_start_internal::h634502e153211333
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:51
[INFO] [stderr]     26:     0x55cc14c275a7 - std::rt::lang_start::h22bed6b278deb902
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:65
[INFO] [stderr]     27:     0x55cc14c267ca - main
[INFO] [stderr]     28:     0x7f599cdcd0b3 - __libc_start_main
[INFO] [stderr]     29:     0x55cc14c250ae - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3a3244b255898b749006d30a8a218ae7c89b8e1ed195c499faad9f987969f1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a3244b255898b749006d30a8a218ae7c89b8e1ed195c499faad9f987969f1c5", kill_on_drop: false }`
[INFO] [stdout] 3a3244b255898b749006d30a8a218ae7c89b8e1ed195c499faad9f987969f1c5