[INFO] crate leveldb-sys 2.0.1 is already in cache
[INFO] extracting crate leveldb-sys 2.0.1 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/leveldb-sys/2.0.1
[INFO] extracting crate leveldb-sys 2.0.1 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/leveldb-sys/2.0.1
[INFO] validating manifest of leveldb-sys-2.0.1 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of leveldb-sys-2.0.1 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing leveldb-sys-2.0.1
[INFO] finished frobbing leveldb-sys-2.0.1
[INFO] frobbed toml for leveldb-sys-2.0.1 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/leveldb-sys/2.0.1/Cargo.toml
[INFO] started frobbing leveldb-sys-2.0.1
[INFO] finished frobbing leveldb-sys-2.0.1
[INFO] frobbed toml for leveldb-sys-2.0.1 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/leveldb-sys/2.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking leveldb-sys-2.0.1 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/leveldb-sys/2.0.1:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c8f46cd4973e5479aef0757bcaec60924ca267c8a4b0551cd31387b8ab5aa64e
[INFO] running `"docker" "start" "-a" "c8f46cd4973e5479aef0757bcaec60924ca267c8a4b0551cd31387b8ab5aa64e"`
[INFO] [stderr]    Compiling leveldb-sys v2.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `leveldb-sys v2.0.1 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/leveldb-sys-2465c8c08a79d69e/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] [build] Started
[INFO] [stderr] [build] Patching the `build_detect_platform` template
[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:     0x55c752101fcb - backtrace::backtrace::libunwind::trace::h0c70a293f076b04d
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55c752101fcb - backtrace::backtrace::trace_unsynchronized::h1bc693e29cfaa7b4
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55c752101fcb - std::sys_common::backtrace::_print::h8e9bb00be68d4090
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55c752101fcb - std::sys_common::backtrace::print::h706192507dd9d34d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55c752101fcb - std::panicking::default_hook::{{closure}}::he2b558091ea21dea
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    5:     0x55c752101ca7 - std::panicking::default_hook::hfb9d48d2b8aaf0f5
[INFO] [stderr]                                at src/libstd/panicking.rs:212
[INFO] [stderr]    6:     0x55c752102690 - std::panicking::rust_panic_with_hook::h56bb6d26ac5aac90
[INFO] [stderr]                                at src/libstd/panicking.rs:475
[INFO] [stderr]    7:     0x55c752102212 - std::panicking::continue_panic_fmt::h360cf8419afe0564
[INFO] [stderr]                                at src/libstd/panicking.rs:382
[INFO] [stderr]    8:     0x55c7521020f6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:309
[INFO] [stderr]    9:     0x55c75211c44d - core::panicking::panic_fmt::h9cf93b79d5aa98c5
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x55c7520d525f - core::result::unwrap_failed::h70aacd1ecd5913dd
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x55c7520d70d8 - core::result::Result<T,E>::unwrap::h756573158f570511
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x55c7520ebf92 - build_script_build::main::h67f8c06bf0254bf7
[INFO] [stderr]                                at src/build.rs:161
[INFO] [stderr]   13:     0x55c7520dfde0 - std::rt::lang_start::{{closure}}::hff599003442454c6
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55c7521020e3 - std::rt::lang_start_internal::{{closure}}::h868ef2b3c3a15fff
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55c7521020e3 - std::panicking::try::do_call::h4528fe5c5ea34ef8
[INFO] [stderr]                                at src/libstd/panicking.rs:294
[INFO] [stderr]   16:     0x55c7521095ea - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   17:     0x55c752102b9d - std::panicking::try::ha87d5378c5dcb863
[INFO] [stderr]                                at src/libstd/panicking.rs:273
[INFO] [stderr]   18:     0x55c752102b9d - std::panic::catch_unwind::hf01b748a30fdd5ec
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   19:     0x55c752102b9d - std::rt::lang_start_internal::h9518341cf2ad1d33
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55c7520dfdb9 - std::rt::lang_start::h9e7e5cd679b0c36c
[INFO] [stderr]                                at /rustc/5f9c0448dde167128d668da4555879f64e56af1d/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55c7520ec9ea - main
[INFO] [stderr]   22:     0x7f3eabc8d2e1 - __libc_start_main
[INFO] [stderr]   23:     0x55c7520c64fa - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "c8f46cd4973e5479aef0757bcaec60924ca267c8a4b0551cd31387b8ab5aa64e"`
[INFO] running `"docker" "rm" "-f" "c8f46cd4973e5479aef0757bcaec60924ca267c8a4b0551cd31387b8ab5aa64e"`
[INFO] [stdout] c8f46cd4973e5479aef0757bcaec60924ca267c8a4b0551cd31387b8ab5aa64e