[INFO] updating cached repository exosite/audit-snitch
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/exosite/audit-snitch
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/exosite/audit-snitch" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/exosite/audit-snitch"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/exosite/audit-snitch'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/exosite/audit-snitch" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/exosite/audit-snitch"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/exosite/audit-snitch'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6df83c845ff04384381d592e5a3463823c3a17e0
[INFO] sha for GitHub repo exosite/audit-snitch: 6df83c845ff04384381d592e5a3463823c3a17e0
[INFO] validating manifest of exosite/audit-snitch on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of exosite/audit-snitch on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing exosite/audit-snitch
[INFO] finished frobbing exosite/audit-snitch
[INFO] frobbed toml for exosite/audit-snitch written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/exosite/audit-snitch/Cargo.toml
[INFO] started frobbing exosite/audit-snitch
[INFO] finished frobbing exosite/audit-snitch
[INFO] frobbed toml for exosite/audit-snitch written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/exosite/audit-snitch/Cargo.toml
[INFO] crate exosite/audit-snitch already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking exosite/audit-snitch against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-7/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/exosite/audit-snitch:/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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 18d1caa2b18e66fe4df96095e078752499924ec658ae02b61ba48dd368ad99bb
[INFO] running `"docker" "start" "-a" "18d1caa2b18e66fe4df96095e078752499924ec658ae02b61ba48dd368ad99bb"`
[INFO] [stderr]    Compiling openssl v0.9.14
[INFO] [stderr]    Compiling protobuf v1.4.1
[INFO] [stderr]    Compiling foreign-types v0.2.0
[INFO] [stderr]    Compiling protoc v1.4.1
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking socket2 v0.2.1
[INFO] [stderr]     Checking toml v0.4.2
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]     Checking chan v0.1.19
[INFO] [stderr]    Compiling openssl-sys v0.9.14
[INFO] [stderr]     Checking slog-async v2.0.1
[INFO] [stderr]     Checking curl-sys v0.3.14
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking chan-signal v0.2.0
[INFO] [stderr]     Checking curl v0.4.7
[INFO] [stderr]     Checking slog-term v2.0.2
[INFO] [stderr]    Compiling protoc-rust v1.4.1
[INFO] [stderr]    Compiling audit-snitch v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `audit-snitch v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/audit-snitch-379d7d8f70918f02/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'protoc: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:999:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x557e884adc0b - backtrace::backtrace::libunwind::trace::h399a7a5a1c92b2d8
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x557e884adc0b - backtrace::backtrace::trace_unsynchronized::h76e29b9231dd0873
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x557e884adc0b - std::sys_common::backtrace::_print::hb092bf553e068953
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x557e884adc0b - std::sys_common::backtrace::print::h3407b08071f3f520
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x557e884adc0b - std::panicking::default_hook::{{closure}}::hc3b8cf51c83ab26e
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x557e884ad8e7 - std::panicking::default_hook::h54ef93848f2476c8
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x557e884ae2d0 - std::panicking::rust_panic_with_hook::hf0df85aa51810823
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x557e884ade52 - std::panicking::continue_panic_fmt::hd822862a3dda0081
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x557e884add36 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x557e884cb4bd - core::panicking::panic_fmt::h569fafe348e0c6f0
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x557e88495918 - core::result::unwrap_failed::h2079633179cff3cc
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x557e881e6fc7 - core::result::Result<T,E>::expect::hceb912205f55b12b
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libcore/result.rs:827
[INFO] [stderr]   12:     0x557e881e70eb - build_script_build::main::h18922b8fdff4a472
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:13
[INFO] [stderr]   13:     0x557e881e6d40 - std::rt::lang_start::{{closure}}::hfb0dec6f0d9b38b7
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x557e884add23 - std::rt::lang_start_internal::{{closure}}::he78638434283b545
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x557e884add23 - std::panicking::try::do_call::h355c93ec0a462271
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x557e884b4c4a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   17:     0x557e884ae7dd - std::panicking::try::h3918ed6cf08237ff
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x557e884ae7dd - std::panic::catch_unwind::h8b2e693598ba7028
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x557e884ae7dd - std::rt::lang_start_internal::h78590588d24f24ba
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x557e881e6d19 - std::rt::lang_start::h01a223816877b471
[INFO] [stderr]                                at /rustc/6ea4036cd20a4b1ab1d56e555108c21735ff6946/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x557e881e74ca - main
[INFO] [stderr]   22:     0x7ff03f1682e1 - __libc_start_main
[INFO] [stderr]   23:     0x557e881e6b8a - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "18d1caa2b18e66fe4df96095e078752499924ec658ae02b61ba48dd368ad99bb"`
[INFO] running `"docker" "rm" "-f" "18d1caa2b18e66fe4df96095e078752499924ec658ae02b61ba48dd368ad99bb"`
[INFO] [stdout] 18d1caa2b18e66fe4df96095e078752499924ec658ae02b61ba48dd368ad99bb