[INFO] cloning repository cmars/pong
[INFO] running `"git" "clone" "--bare" "git://github.com/cmars/pong.git" "work/cache/sources/gh/cmars/pong"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/cmars/pong'...
[INFO] running `"git" "clone" "work/cache/sources/gh/cmars/pong" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/cmars/pong"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/cmars/pong'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cmars/pong" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/cmars/pong"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/cmars/pong'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ce2b911d82886916afc0b7d7c733b94e49ae1cb
[INFO] sha for GitHub repo cmars/pong: 8ce2b911d82886916afc0b7d7c733b94e49ae1cb
[INFO] validating manifest of cmars/pong 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 cmars/pong 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 cmars/pong
[INFO] finished frobbing cmars/pong
[INFO] frobbed toml for cmars/pong written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/cmars/pong/Cargo.toml
[INFO] started frobbing cmars/pong
[INFO] finished frobbing cmars/pong
[INFO] frobbed toml for cmars/pong written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/cmars/pong/Cargo.toml
[INFO] crate cmars/pong 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cmars/pong against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/cmars/pong:/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] 442edb918d7471e58f55521b0950de21ba33ec32d6644c090ae961df68b19170
[INFO] running `"docker" "start" "-a" "442edb918d7471e58f55521b0950de21ba33ec32d6644c090ae961df68b19170"`
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.6.0
[INFO] [stderr]    Compiling minimp3-sys v0.3.0
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]    Compiling slice-deque v0.1.13
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling ogg v0.4.1
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.4
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling shred-derive v0.5.0
[INFO] [stderr]    Compiling euclid v0.19.2
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling ordered-float v1.0.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling intl_pluralrules v1.0.1
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.3
[INFO] [stderr]    Compiling syn v0.15.3
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/rustc_version_runtime-94f2a16bc3e84eaf/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:     0x56078d3f62db - 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:     0x56078d3f62db - 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:     0x56078d3f62db - std::sys_common::backtrace::_print::hd27175ce39811176
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x56078d3f62db - std::sys_common::backtrace::print::h117e2eebf9a1e122
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x56078d3f62db - std::panicking::default_hook::{{closure}}::h6369b988ee675335
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    5:     0x56078d3f5fdc - std::panicking::default_hook::hfaefd2bea4c25f9e
[INFO] [stderr]                                at src/libstd/panicking.rs:212
[INFO] [stderr]    6:     0x56078d3f69a0 - std::panicking::rust_panic_with_hook::h02c52718165ccced
[INFO] [stderr]                                at src/libstd/panicking.rs:475
[INFO] [stderr]    7:     0x56078d3f6522 - std::panicking::continue_panic_fmt::h9e135674c1df51b4
[INFO] [stderr]                                at src/libstd/panicking.rs:382
[INFO] [stderr]    8:     0x56078d3f6406 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:309
[INFO] [stderr]    9:     0x56078d40fa2d - core::panicking::panic_fmt::h58c956553ac8538f
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x56078d3cc607 - core::result::unwrap_failed::ha6290f24b57c7e73
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x56078d3cc968 - core::result::Result<T,E>::unwrap::hda27b4f352feba0e
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x56078d3c98bb - build_script_build::main::h1acaebf8fa706739
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.3/build.rs:27
[INFO] [stderr]   13:     0x56078d3cb030 - std::rt::lang_start::{{closure}}::hd9899667e19d1be6
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x56078d3f63f3 - std::rt::lang_start_internal::{{closure}}::hcbc5c8394111530e
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x56078d3f63f3 - std::panicking::try::do_call::h84c4ef65129422bb
[INFO] [stderr]                                at src/libstd/panicking.rs:294
[INFO] [stderr]   16:     0x56078d3fca8a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   17:     0x56078d3f6ead - std::panicking::try::h2c4ddfbb8ee8ea48
[INFO] [stderr]                                at src/libstd/panicking.rs:273
[INFO] [stderr]   18:     0x56078d3f6ead - std::panic::catch_unwind::hdaf4c8aaf8d806d4
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x56078d3f6ead - std::rt::lang_start_internal::h62b0fb13d258520d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x56078d3cb009 - std::rt::lang_start::hd0daa90631858c1d
[INFO] [stderr]                                at /rustc/c8865d8e195813ade6b84434ac9f8850e7112d1a/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x56078d3ca87a - main
[INFO] [stderr]   22:     0x7fd8cf7d42e1 - __libc_start_main
[INFO] [stderr]   23:     0x56078d3c923a - _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" "442edb918d7471e58f55521b0950de21ba33ec32d6644c090ae961df68b19170"`
[INFO] running `"docker" "rm" "-f" "442edb918d7471e58f55521b0950de21ba33ec32d6644c090ae961df68b19170"`
[INFO] [stdout] 442edb918d7471e58f55521b0950de21ba33ec32d6644c090ae961df68b19170