[INFO] crate rustc_version_runtime 0.1.5 is already in cache
[INFO] extracting crate rustc_version_runtime 0.1.5 into work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/rustc_version_runtime/0.1.5
[INFO] extracting crate rustc_version_runtime 0.1.5 into work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/rustc_version_runtime/0.1.5
[INFO] validating manifest of rustc_version_runtime-0.1.5 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 rustc_version_runtime-0.1.5 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 rustc_version_runtime-0.1.5
[INFO] finished frobbing rustc_version_runtime-0.1.5
[INFO] frobbed toml for rustc_version_runtime-0.1.5 written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/rustc_version_runtime/0.1.5/Cargo.toml
[INFO] started frobbing rustc_version_runtime-0.1.5
[INFO] finished frobbing rustc_version_runtime-0.1.5
[INFO] frobbed toml for rustc_version_runtime-0.1.5 written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/rustc_version_runtime/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 rustc_version_runtime-0.1.5 against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-7/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/rustc_version_runtime/0.1.5:/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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b975a19464b398c5a545ec03ac0272e6f5e2d90d1150bf3fac5c0c65ce9517f7
[INFO] running `"docker" "start" "-a" "b975a19464b398c5a545ec03ac0272e6f5e2d90d1150bf3fac5c0c65ce9517f7"`
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/rustc_version_runtime-75412bedd347908e/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:     0x55a117512a0b - backtrace::backtrace::libunwind::trace::hc5a758871b6ebf05
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55a117512a0b - backtrace::backtrace::trace_unsynchronized::hdad9729cc53c45f3
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55a117512a0b - std::sys_common::backtrace::_print::hccf66646430a9cbc
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55a117512a0b - std::sys_common::backtrace::print::h6c902507aa1c61bf
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55a117512a0b - std::panicking::default_hook::{{closure}}::hc0c79151a0a4b58f
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55a1175126e7 - std::panicking::default_hook::hfd408bb664bf319a
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55a1175130d0 - std::panicking::rust_panic_with_hook::hb2d4371b6afbe17a
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55a117512c52 - std::panicking::continue_panic_fmt::h6eef1f2d6e3abc2b
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x55a117512b36 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x55a11752c0bd - core::panicking::panic_fmt::h9f3781beea83a294
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x55a1174e1e73 - core::result::unwrap_failed::h1c5d0f766c931652
[INFO] [stderr]                                at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x55a1174e2498 - core::result::Result<T,E>::unwrap::he9e61fed47dd31a6
[INFO] [stderr]                                at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x55a1174dfb3b - build_script_build::main::hf9a09752a1028b4f
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:27
[INFO] [stderr]   13:     0x55a1174e1300 - std::rt::lang_start::{{closure}}::h25a7508dfba3de6a
[INFO] [stderr]                                at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55a117512b23 - std::rt::lang_start_internal::{{closure}}::h86569d7197572496
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55a117512b23 - std::panicking::try::do_call::hc05ef3c0bbb0a2c9
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x55a11751908a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   17:     0x55a1175135dd - std::panicking::try::h5f7f6728fc93999f
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x55a1175135dd - std::panic::catch_unwind::h9120cbd852b844f2
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x55a1175135dd - std::rt::lang_start_internal::h20e51e71516fa081
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55a1174e12d9 - std::rt::lang_start::h59fd6dfba3677a8c
[INFO] [stderr]                                at /rustc/003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55a1174e0b3a - main
[INFO] [stderr]   22:     0x7fc480f7b2e1 - __libc_start_main
[INFO] [stderr]   23:     0x55a1174df4ba - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "b975a19464b398c5a545ec03ac0272e6f5e2d90d1150bf3fac5c0c65ce9517f7"`
[INFO] running `"docker" "rm" "-f" "b975a19464b398c5a545ec03ac0272e6f5e2d90d1150bf3fac5c0c65ce9517f7"`
[INFO] [stdout] b975a19464b398c5a545ec03ac0272e6f5e2d90d1150bf3fac5c0c65ce9517f7