[INFO] cloning repository CosineGaming/gapless
[INFO] running `"git" "clone" "--bare" "git://github.com/CosineGaming/gapless.git" "work/cache/sources/gh/CosineGaming/gapless"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/CosineGaming/gapless'...
[INFO] running `"git" "clone" "work/cache/sources/gh/CosineGaming/gapless" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CosineGaming/gapless"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CosineGaming/gapless'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CosineGaming/gapless" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CosineGaming/gapless"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CosineGaming/gapless'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 98048d67640feee9c1070f5c3d07e193e04e9210
[INFO] sha for GitHub repo CosineGaming/gapless: 98048d67640feee9c1070f5c3d07e193e04e9210
[INFO] validating manifest of CosineGaming/gapless on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CosineGaming/gapless on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CosineGaming/gapless
[INFO] removed path dependency amethyst from CosineGaming/gapless
[INFO] finished frobbing CosineGaming/gapless
[INFO] frobbed toml for CosineGaming/gapless written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CosineGaming/gapless/Cargo.toml
[INFO] started frobbing CosineGaming/gapless
[INFO] removed path dependency amethyst from CosineGaming/gapless
[INFO] finished frobbing CosineGaming/gapless
[INFO] frobbed toml for CosineGaming/gapless written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CosineGaming/gapless/Cargo.toml
[INFO] crate CosineGaming/gapless already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CosineGaming/gapless/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.2.2
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CosineGaming/gapless against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CosineGaming/gapless:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 8d2e37c1d44ac43448b69a567ace2495ae25beec21ed543e020b21c63f37ff6f
[INFO] running `"docker" "start" "-a" "8d2e37c1d44ac43448b69a567ace2495ae25beec21ed543e020b21c63f37ff6f"`
[INFO] [stderr] warning: dependency (amethyst) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]    Compiling downcast-rs v1.0.4
[INFO] [stderr]    Compiling libm v0.1.3
[INFO] [stderr]    Compiling atom v0.3.5
[INFO] [stderr]    Compiling mopa v0.2.2
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling tuple_utils v0.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling shrev v1.1.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling mint v0.5.1
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling wavefront_obj v5.1.0
[INFO] [stderr]    Compiling xi-unicode v0.1.0
[INFO] [stderr]    Compiling hetseq v0.2.0
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling hashbrown v0.3.1
[INFO] [stderr]    Compiling claxon v0.3.3
[INFO] [stderr]    Compiling rgb v0.8.13
[INFO] [stderr]    Compiling fluent-locale v0.4.1
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling libloading v0.5.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]    Compiling gif v0.10.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling annotate-snippets v0.1.0
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling stb_truetype v0.2.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling ogg v0.7.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling gfx_macros v0.2.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.12
[INFO] [stderr]    Compiling intl_pluralrules v1.0.3
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
[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/crater/target/debug/build/rustc_version_runtime-0a82ed3271dd8c4c/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:999:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5591db0ac43b - backtrace::backtrace::libunwind::trace::hcbf63b8d794b15f4
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5591db0ac43b - backtrace::backtrace::trace_unsynchronized::h681e1cb201a9972d
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5591db0ac43b - std::sys_common::backtrace::_print::hd27175ce39811176
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5591db0ac43b - std::sys_common::backtrace::print::h117e2eebf9a1e122
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5591db0ac43b - std::panicking::default_hook::{{closure}}::h6369b988ee675335
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    5:     0x5591db0ac13c - std::panicking::default_hook::hfaefd2bea4c25f9e
[INFO] [stderr]                                at src/libstd/panicking.rs:212
[INFO] [stderr]    6:     0x5591db0acb00 - std::panicking::rust_panic_with_hook::h02c52718165ccced
[INFO] [stderr]                                at src/libstd/panicking.rs:475
[INFO] [stderr]    7:     0x5591db0ac682 - std::panicking::continue_panic_fmt::h9e135674c1df51b4
[INFO] [stderr]                                at src/libstd/panicking.rs:382
[INFO] [stderr]    8:     0x5591db0ac566 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:309
[INFO] [stderr]    9:     0x5591db0c5bfd - core::panicking::panic_fmt::h58c956553ac8538f
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x5591db07b8a3 - core::result::unwrap_failed::h59c6364d8ef7f7be
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x5591db07bd78 - core::result::Result<T,E>::unwrap::hef17282c95a4fa7d
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x5591db07957b - build_script_build::main::h2809d3c843141d5c
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27
[INFO] [stderr]   13:     0x5591db07ad30 - std::rt::lang_start::{{closure}}::h4196a530086033cc
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x5591db0ac553 - std::rt::lang_start_internal::{{closure}}::hcbc5c8394111530e
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x5591db0ac553 - std::panicking::try::do_call::h84c4ef65129422bb
[INFO] [stderr]                                at src/libstd/panicking.rs:294
[INFO] [stderr]   16:     0x5591db0b2bea - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   17:     0x5591db0ad00d - std::panicking::try::h2c4ddfbb8ee8ea48
[INFO] [stderr]                                at src/libstd/panicking.rs:273
[INFO] [stderr]   18:     0x5591db0ad00d - std::panic::catch_unwind::hdaf4c8aaf8d806d4
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x5591db0ad00d - std::rt::lang_start_internal::h62b0fb13d258520d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x5591db07ad09 - std::rt::lang_start::h676601b0d9bb1b08
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x5591db07a57a - main
[INFO] [stderr]   22:     0x7fdd32a402e1 - __libc_start_main
[INFO] [stderr]   23:     0x5591db078efa - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8d2e37c1d44ac43448b69a567ace2495ae25beec21ed543e020b21c63f37ff6f"`
[INFO] running `"docker" "rm" "-f" "8d2e37c1d44ac43448b69a567ace2495ae25beec21ed543e020b21c63f37ff6f"`
[INFO] [stdout] 8d2e37c1d44ac43448b69a567ace2495ae25beec21ed543e020b21c63f37ff6f