[INFO] updating cached repository https://github.com/DarthEmpty/snake
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f8b3d694a9eb24ac967f368ff7f7c7e04e8dd839
[INFO] checking DarthEmpty/snake against try#8d67a66581ea5498d7ac03b8f88a478d8ec75cf0 for pr-64564
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarthEmpty%2Fsnake" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DarthEmpty/snake on toolchain 8d67a66581ea5498d7ac03b8f88a478d8ec75cf0-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+8d67a66581ea5498d7ac03b8f88a478d8ec75cf0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/DarthEmpty/snake
[INFO] finished tweaking git repo https://github.com/DarthEmpty/snake
[INFO] tweaked toml for git repo https://github.com/DarthEmpty/snake written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/DarthEmpty/snake already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+8d67a66581ea5498d7ac03b8f88a478d8ec75cf0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+8d67a66581ea5498d7ac03b8f88a478d8ec75cf0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e407352468023a1a1ee7982d849da75a3cfabed61d1d9116b8917eda0aa4d721
[INFO] running `"docker" "start" "-a" "e407352468023a1a1ee7982d849da75a3cfabed61d1d9116b8917eda0aa4d721"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]     Checking libm v0.1.2
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking mint v0.5.1
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking hetseq v0.2.0
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking wavefront_obj v5.1.0
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking claxon v0.3.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking hashbrown v0.2.2
[INFO] [stderr]     Checking fluent-locale v0.4.1
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking colored v1.7.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling cmake v0.1.38
[INFO] [stderr]    Compiling xml-rs v0.7.0
[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]     Checking walkdir v2.2.7
[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 backtrace v0.3.15
[INFO] [stderr]    Compiling bincode v1.1.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking annotate-snippets v0.1.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking fluent-syntax v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking slice-deque v0.1.16
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling gfx_macros v0.2.1
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]     Checking intl_pluralrules v1.0.3
[INFO] [stderr]     Checking generic-array v0.11.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[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-df352f61aef24ba0/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" }', src/libcore/result.rs:1165:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x56402da015a4 - backtrace::backtrace::libunwind::trace::hbae50f2b991d86ef
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x56402da015a4 - backtrace::backtrace::trace_unsynchronized::h19bc23b015d2838f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x56402da015a4 - std::sys_common::backtrace::_print_fmt::he8cbf667081e4bf8
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:76
[INFO] [stderr]    3:     0x56402da015a4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha849c2c1bcf100e7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:60
[INFO] [stderr]    4:     0x56402da1f4bc - core::fmt::write::h603a714bd37b8e5c
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1030
[INFO] [stderr]    5:     0x56402d9ff097 - std::io::Write::write_fmt::hb319166cf1de5561
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x56402da03925 - std::sys_common::backtrace::_print::hda0c59cff136ee92
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:64
[INFO] [stderr]    7:     0x56402da03925 - std::sys_common::backtrace::print::hea7aeb95cf61b134
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x56402da03925 - std::panicking::default_hook::{{closure}}::h4b10254e454f4b2c
[INFO] [stderr]                                at src/libstd/panicking.rs:196
[INFO] [stderr]    9:     0x56402da03616 - std::panicking::default_hook::h6427597d12d4cbca
[INFO] [stderr]                                at src/libstd/panicking.rs:210
[INFO] [stderr]   10:     0x56402da03f75 - std::panicking::rust_panic_with_hook::hccceacbc62eab668
[INFO] [stderr]                                at src/libstd/panicking.rs:473
[INFO] [stderr]   11:     0x56402da03b12 - std::panicking::continue_panic_fmt::h8ea4922e4ade12b5
[INFO] [stderr]                                at src/libstd/panicking.rs:380
[INFO] [stderr]   12:     0x56402da03a06 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:307
[INFO] [stderr]   13:     0x56402da1cbda - core::panicking::panic_fmt::h2cd22cf274c37798
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   14:     0x56402da1ccd7 - core::result::unwrap_failed::h741ddd07f41ecb26
[INFO] [stderr]                                at src/libcore/result.rs:1165
[INFO] [stderr]   15:     0x56402d9d4a40 - core::result::Result<T,E>::unwrap::hbc1d12180398119a
[INFO] [stderr]                                at /rustc/8d67a66581ea5498d7ac03b8f88a478d8ec75cf0/src/libcore/result.rs:933
[INFO] [stderr]   16:     0x56402d9d11cb - build_script_build::main::he4630efecf94f848
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27
[INFO] [stderr]   17:     0x56402d9d2960 - std::rt::lang_start::{{closure}}::h8f0e8e8b0dfa61a2
[INFO] [stderr]                                at /rustc/8d67a66581ea5498d7ac03b8f88a478d8ec75cf0/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x56402da039f3 - std::rt::lang_start_internal::{{closure}}::h5f591d8741fb1e64
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   19:     0x56402da039f3 - std::panicking::try::do_call::hc3ebe742ad7d149e
[INFO] [stderr]                                at src/libstd/panicking.rs:292
[INFO] [stderr]   20:     0x56402da09daa - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   21:     0x56402da0446d - std::panicking::try::hc94f3a47ff9c6438
[INFO] [stderr]                                at src/libstd/panicking.rs:271
[INFO] [stderr]   22:     0x56402da0446d - std::panic::catch_unwind::h702acac46b107571
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   23:     0x56402da0446d - std::rt::lang_start_internal::h011095b45ca4068d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   24:     0x56402d9d2939 - std::rt::lang_start::h22be319399f37f18
[INFO] [stderr]                                at /rustc/8d67a66581ea5498d7ac03b8f88a478d8ec75cf0/src/libstd/rt.rs:64
[INFO] [stderr]   25:     0x56402d9d21aa - main
[INFO] [stderr]   26:     0x7f34d3926b97 - __libc_start_main
[INFO] [stderr]   27:     0x56402d9d0b9a - _start
[INFO] [stderr]   28:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e407352468023a1a1ee7982d849da75a3cfabed61d1d9116b8917eda0aa4d721"`
[INFO] running `"docker" "rm" "-f" "e407352468023a1a1ee7982d849da75a3cfabed61d1d9116b8917eda0aa4d721"`
[INFO] [stdout] e407352468023a1a1ee7982d849da75a3cfabed61d1d9116b8917eda0aa4d721