[INFO] crate leveldb 0.8.4 is already in cache
[INFO] extracting crate leveldb 0.8.4 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/leveldb/0.8.4
[INFO] extracting crate leveldb 0.8.4 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/leveldb/0.8.4
[INFO] validating manifest of leveldb-0.8.4 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of leveldb-0.8.4 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing leveldb-0.8.4
[INFO] removed 1 missing tests
[INFO] finished frobbing leveldb-0.8.4
[INFO] frobbed toml for leveldb-0.8.4 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/leveldb/0.8.4/Cargo.toml
[INFO] started frobbing leveldb-0.8.4
[INFO] removed 1 missing tests
[INFO] finished frobbing leveldb-0.8.4
[INFO] frobbed toml for leveldb-0.8.4 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/leveldb/0.8.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking leveldb-0.8.4 against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/leveldb/0.8.4:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5f199c37958f61b34a266df4df02446d9aae520ec2a28071355fbfb278f4e42f
[INFO] running `"docker" "start" "-a" "5f199c37958f61b34a266df4df02446d9aae520ec2a28071355fbfb278f4e42f"`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/crater/workdir/tests/utils.rs
[INFO] [stderr] * /opt/crater/workdir/tests/management.rs
[INFO] [stderr] * /opt/crater/workdir/tests/compaction.rs
[INFO] [stderr] * /opt/crater/workdir/tests/binary.rs
[INFO] [stderr] * /opt/crater/workdir/tests/concurrent_access.rs
[INFO] [stderr] * /opt/crater/workdir/tests/database.rs
[INFO] [stderr] * /opt/crater/workdir/tests/iterator.rs
[INFO] [stderr] * /opt/crater/workdir/tests/snapshots.rs
[INFO] [stderr] * /opt/crater/workdir/tests/writebatch.rs
[INFO] [stderr] * /opt/crater/workdir/tests/comparator.rs
[INFO] [stderr] * /opt/crater/workdir/tests/tests.rs
[INFO] [stderr] * /opt/crater/workdir/tests/cache.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]    Compiling leveldb-sys v2.0.1
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr] error: failed to run custom build command for `leveldb-sys v2.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/leveldb-sys-a89a5d8e03d5251d/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] [build] Started
[INFO] [stderr] [snappy] Cleaning
[INFO] [stderr] make: Entering directory '/opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr] make: Leaving directory '/opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr] [snappy] Configuring
[INFO] [stderr] [snappy] Building
[INFO] [stderr] make: Entering directory '/opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr] make: Leaving directory '/opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr] [build] Copying output files
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] make: *** No rule to make target 'distclean'.  Stop.
[INFO] [stderr] ./configure: line 2175: config.log: Read-only file system
[INFO] [stderr] ./configure: line 2185: config.log: Read-only file system
[INFO] [stderr] make: *** No targets specified and no makefile found.  Stop.
[INFO] [stderr] thread 'main' panicked at 'copy of output files failed', src/libcore/option.rs:1064:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5598f22651eb - backtrace::backtrace::libunwind::trace::hbfb69e72f505529b
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5598f22651eb - backtrace::backtrace::trace_unsynchronized::hac9ea77fa06b91bd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5598f22651eb - std::sys_common::backtrace::_print::hf6f722cabcf8c26d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5598f22651eb - std::sys_common::backtrace::print::h9cca5983945bdb52
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5598f22651eb - std::panicking::default_hook::{{closure}}::h2fab7259edc3a80d
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x5598f2264ec7 - std::panicking::default_hook::ha99acf6d9268d46d
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x5598f22658b0 - std::panicking::rust_panic_with_hook::hddab2c65ce92e648
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x5598f2265432 - std::panicking::continue_panic_fmt::hfaaf28183fee9f60
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x5598f2265316 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x5598f227f66d - core::panicking::panic_fmt::hc776b72619f795d7
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x5598f227f6d7 - core::option::expect_failed::h00d83a456f83db06
[INFO] [stderr]                                at src/libcore/option.rs:1064
[INFO] [stderr]   11:     0x5598f224a92a - core::option::Option<T>::expect::h952140789b218888
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libcore/option.rs:340
[INFO] [stderr]   12:     0x5598f224ce00 - build_script_build::build_snappy::h8f13601d5d0932e2
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/src/build.rs:46
[INFO] [stderr]   13:     0x5598f224e40d - build_script_build::main::h60062f6d2d9badb5
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/src/build.rs:125
[INFO] [stderr]   14:     0x5598f2252bb0 - std::rt::lang_start::{{closure}}::hc4df579bc401e012
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   15:     0x5598f2265303 - std::rt::lang_start_internal::{{closure}}::hbec6d1ff7b00d029
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   16:     0x5598f2265303 - std::panicking::try::do_call::h83e51489f66cd002
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   17:     0x5598f226c80a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   18:     0x5598f2265dbd - std::panicking::try::hb1deae6a8854c8be
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   19:     0x5598f2265dbd - std::panic::catch_unwind::hff09c33b8b66b7a2
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   20:     0x5598f2265dbd - std::rt::lang_start_internal::h01b3f7988e3fe75d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   21:     0x5598f2252b89 - std::rt::lang_start::hcb5caf8f58710781
[INFO] [stderr]                                at /rustc/18481b65f318e0b4b20c0fc61340054701719d6c/src/libstd/rt.rs:64
[INFO] [stderr]   22:     0x5598f224f21a - main
[INFO] [stderr]   23:     0x7f7ef3be72e1 - __libc_start_main
[INFO] [stderr]   24:     0x5598f22294fa - _start
[INFO] [stderr]   25:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "5f199c37958f61b34a266df4df02446d9aae520ec2a28071355fbfb278f4e42f"`
[INFO] running `"docker" "rm" "-f" "5f199c37958f61b34a266df4df02446d9aae520ec2a28071355fbfb278f4e42f"`
[INFO] [stdout] 5f199c37958f61b34a266df4df02446d9aae520ec2a28071355fbfb278f4e42f