[INFO] crate leveldb-sys 2.0.1 is already in cache
[INFO] extracting crate leveldb-sys 2.0.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/leveldb-sys/2.0.1
[INFO] extracting crate leveldb-sys 2.0.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/leveldb-sys/2.0.1
[INFO] validating manifest of leveldb-sys-2.0.1 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of leveldb-sys-2.0.1 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-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-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/leveldb-sys/2.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking leveldb-sys-2.0.1 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] eacdebffb4fc519ba24c31dba8d4d08678813fb1d1a331c77022f357ee66a45e
[INFO] running `"docker" "start" "-a" "eacdebffb4fc519ba24c31dba8d4d08678813fb1d1a331c77022f357ee66a45e"`
[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-0aa59659a4790bdc/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:1084:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55cd555d0c8b - backtrace::backtrace::libunwind::trace::h2577eef7cb82271e
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55cd555d0c8b - backtrace::backtrace::trace_unsynchronized::ha9b72a77aa6c4ce9
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55cd555d0c8b - std::sys_common::backtrace::_print::h8e2c1c5cda6e4e6e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55cd555d0c8b - std::sys_common::backtrace::print::h7e0f8aad0d8a6f3b
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55cd555d0c8b - std::panicking::default_hook::{{closure}}::haae4327ede06a559
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55cd555d0966 - std::panicking::default_hook::hbf5f36093f15fccc
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55cd555d134d - std::panicking::rust_panic_with_hook::hf385e0a05e771036
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55cd555d0ed2 - std::panicking::continue_panic_fmt::h95ba204f85050b4c
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x55cd555d0db6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x55cd555eb04d - core::panicking::panic_fmt::h581f7a1e5499d350
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x55cd555eb147 - core::result::unwrap_failed::h863b7818e32f0320
[INFO] [stderr]                                at src/libcore/result.rs:1084
[INFO] [stderr]   11:     0x55cd555b5370 - core::result::Result<T,E>::unwrap::hcb9dcfcadd2d14b4
[INFO] [stderr]                                at /rustc/60960a260f7b5c695fd0717311d72ce62dd4eb43/src/libcore/result.rs:852
[INFO] [stderr]   12:     0x55cd555bf35c - build_script_build::main::h74e2dd91cac085a4
[INFO] [stderr]                                at src/build.rs:161
[INFO] [stderr]   13:     0x55cd555b6c00 - std::rt::lang_start::{{closure}}::h0052343a019baf79
[INFO] [stderr]                                at /rustc/60960a260f7b5c695fd0717311d72ce62dd4eb43/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55cd555d0da3 - std::rt::lang_start_internal::{{closure}}::heabbf1748dc855a1
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55cd555d0da3 - std::panicking::try::do_call::hf890723f0a5de9f8
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x55cd555d824a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   17:     0x55cd555d185d - std::panicking::try::hf36ba5410913b146
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x55cd555d185d - std::panic::catch_unwind::hdfbba43a8f6b3f51
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x55cd555d185d - std::rt::lang_start_internal::h85d3c6f2844a1656
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55cd555b6bd9 - std::rt::lang_start::h07accc175c049dba
[INFO] [stderr]                                at /rustc/60960a260f7b5c695fd0717311d72ce62dd4eb43/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55cd555bfd9a - main
[INFO] [stderr]   22:     0x7f09a1e622e1 - __libc_start_main
[INFO] [stderr]   23:     0x55cd555948ba - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "eacdebffb4fc519ba24c31dba8d4d08678813fb1d1a331c77022f357ee66a45e"`
[INFO] running `"docker" "rm" "-f" "eacdebffb4fc519ba24c31dba8d4d08678813fb1d1a331c77022f357ee66a45e"`
[INFO] [stdout] eacdebffb4fc519ba24c31dba8d4d08678813fb1d1a331c77022f357ee66a45e