[INFO] updating cached repository math-fehr/lucyrs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/math-fehr/lucyrs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/math-fehr/lucyrs" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/math-fehr/lucyrs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/math-fehr/lucyrs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/math-fehr/lucyrs" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/math-fehr/lucyrs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/math-fehr/lucyrs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c52eb048eead3318ae80a1a74235bb502dc1e678
[INFO] sha for GitHub repo math-fehr/lucyrs: c52eb048eead3318ae80a1a74235bb502dc1e678
[INFO] validating manifest of math-fehr/lucyrs on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of math-fehr/lucyrs on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing math-fehr/lucyrs
[INFO] finished frobbing math-fehr/lucyrs
[INFO] frobbed toml for math-fehr/lucyrs written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/math-fehr/lucyrs/Cargo.toml
[INFO] started frobbing math-fehr/lucyrs
[INFO] finished frobbing math-fehr/lucyrs
[INFO] frobbed toml for math-fehr/lucyrs written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/math-fehr/lucyrs/Cargo.toml
[INFO] crate math-fehr/lucyrs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking math-fehr/lucyrs against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-0/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/math-fehr/lucyrs:/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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0f520c1944175fab07cf96907221c9d859e497083b0f60a5c52e0c8acbea8ee2
[INFO] running `"docker" "start" "-a" "0f520c1944175fab07cf96907221c9d859e497083b0f60a5c52e0c8acbea8ee2"`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling lalrpop-util v0.16.1
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling itertools v0.7.8
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling ena v0.10.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.1
[INFO] [stderr]    Compiling lucyrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `lucyrs v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/lucyrs-bcd398910a34a584/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] processing file `/opt/crater/workdir/src/lucy/grammar.lalrpop`
[INFO] [stderr] 
[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:     0x55a0b8af88e3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h7f08204c27b0467a
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x55a0b8af45bb - std::sys_common::backtrace::_print::hd9dacd169df81122
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x55a0b8af7706 - std::panicking::default_hook::{{closure}}::hb63012d2be6755b2
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:197
[INFO] [stderr]    3:     0x55a0b8af7499 - std::panicking::default_hook::h3efd6a8a707ee89e
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x55a0b8af7daf - std::panicking::rust_panic_with_hook::h4f5c00b20be3bea5
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x55a0b8af7931 - std::panicking::continue_panic_fmt::h59833cd39bf8ae68
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x55a0b8af7815 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:308
[INFO] [stderr]    7:     0x55a0b8b0d05c - core::panicking::panic_fmt::h8d9101a62a895e30
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]    8:     0x55a0b81c4204 - core::result::unwrap_failed::hf9582154a120cd84
[INFO] [stderr]                                at /rustc/efe2f32a6b8217425f361ec7c206910c611c03ee/src/libcore/macros.rs:18
[INFO] [stderr]    9:     0x55a0b81c42af - core::result::Result<T,E>::unwrap::h93a21077132069db
[INFO] [stderr]                                at /rustc/efe2f32a6b8217425f361ec7c206910c611c03ee/src/libcore/result.rs:800
[INFO] [stderr]   10:     0x55a0b81c4378 - build_script_build::main::hce9f6ea94ef856b5
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:4
[INFO] [stderr]   11:     0x55a0b81c444f - std::rt::lang_start::{{closure}}::h99ea9513996d196f
[INFO] [stderr]                                at /rustc/efe2f32a6b8217425f361ec7c206910c611c03ee/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x55a0b8af77b2 - std::panicking::try::do_call::h44a7db9f8ace0499
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]   13:     0x55a0b8afac79 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   14:     0x55a0b8af82bc - std::rt::lang_start_internal::h5d2b2de4d9a7c9cd
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   15:     0x55a0b81c4428 - std::rt::lang_start::h4634b8b27e66e12e
[INFO] [stderr]                                at /rustc/efe2f32a6b8217425f361ec7c206910c611c03ee/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x55a0b81c43c9 - main
[INFO] [stderr]   17:     0x7f9c2b12e2e0 - __libc_start_main
[INFO] [stderr]   18:     0x55a0b81c3c29 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "0f520c1944175fab07cf96907221c9d859e497083b0f60a5c52e0c8acbea8ee2"`
[INFO] running `"docker" "rm" "-f" "0f520c1944175fab07cf96907221c9d859e497083b0f60a5c52e0c8acbea8ee2"`
[INFO] [stdout] 0f520c1944175fab07cf96907221c9d859e497083b0f60a5c52e0c8acbea8ee2