[INFO] updating cached repository c0gent/ocl-segfault
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/c0gent/ocl-segfault
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/c0gent/ocl-segfault" "work/ex/beta-1.37-6/sources/1.36.0/gh/c0gent/ocl-segfault"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/c0gent/ocl-segfault'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/c0gent/ocl-segfault" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c0gent/ocl-segfault"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c0gent/ocl-segfault'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 698e6b28edfa12de3f4044574573ef4a4c6b6d35
[INFO] sha for GitHub repo c0gent/ocl-segfault: 698e6b28edfa12de3f4044574573ef4a4c6b6d35
[INFO] validating manifest of c0gent/ocl-segfault on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of c0gent/ocl-segfault on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing c0gent/ocl-segfault
[INFO] finished frobbing c0gent/ocl-segfault
[INFO] frobbed toml for c0gent/ocl-segfault written to work/ex/beta-1.37-6/sources/1.36.0/gh/c0gent/ocl-segfault/Cargo.toml
[INFO] started frobbing c0gent/ocl-segfault
[INFO] finished frobbing c0gent/ocl-segfault
[INFO] frobbed toml for c0gent/ocl-segfault written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c0gent/ocl-segfault/Cargo.toml
[INFO] crate c0gent/ocl-segfault already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing c0gent/ocl-segfault against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c0gent/ocl-segfault:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 4f79cc5402a18db604898841ab4d7c995cbdfed5593592e84c94b49b3760a956
[INFO] running `"docker" "start" "-a" "4f79cc5402a18db604898841ab4d7c995cbdfed5593592e84c94b49b3760a956"`
[INFO] [stderr]    Compiling cl-sys v0.4.1 (https://github.com/cogciprocate/ocl#1e103b2f)
[INFO] [stderr]    Compiling qutex v0.2.1
[INFO] [stderr]    Compiling ocl-core v0.9.0 (https://github.com/cogciprocate/ocl#1e103b2f)
[INFO] [stderr]    Compiling ocl-core-vector v0.1.0 (https://github.com/cogciprocate/ocl#1e103b2f)
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling ocl v0.18.0 (https://github.com/cogciprocate/ocl#1e103b2f)
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/git/checkouts/ocl-51b7c5264cbf134c/1e103b2/ocl/src/standard/buffer.rs:1609:13
[INFO] [stderr]      |
[INFO] [stderr] 1606 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1609 |             &self.cmd.buffer.obj_core, true, flags, offset, len, ewait, enew)?;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1614 |             queue.clone()))
[INFO] [stderr]      |             ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/git/checkouts/ocl-51b7c5264cbf134c/1e103b2/ocl/src/standard/buffer.rs:1613:57
[INFO] [stderr]      |
[INFO] [stderr] 1606 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1613 |         Ok(MemMap::new(mm_core, len, None, unmap_event, self.cmd.buffer.obj_core.clone(),
[INFO] [stderr]      |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] 1614 |             queue.clone()))
[INFO] [stderr]      |             ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/git/checkouts/ocl-51b7c5264cbf134c/1e103b2/ocl/src/standard/buffer.rs:1635:13
[INFO] [stderr]      |
[INFO] [stderr] 1630 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1635 |             &self.cmd.buffer.obj_core, false, flags, offset, len, ewait,
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1646 |             self.cmd.buffer.obj_core.clone(), queue.clone(), /*is_mapped*/))
[INFO] [stderr]      |                                               ----- mutable borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0502]: cannot borrow `self.cmd.buffer.obj_core` as immutable because it is also borrowed as mutable
[INFO] [stderr]     --> /opt/crater/cargo-home/git/checkouts/ocl-51b7c5264cbf134c/1e103b2/ocl/src/standard/buffer.rs:1646:13
[INFO] [stderr]      |
[INFO] [stderr] 1630 |         let (offset, len, queue, flags, ewait, enew, /*is_mapped*/) = self.enq_details()?;
[INFO] [stderr]      |                                                                       ---- mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 1646 |             self.cmd.buffer.obj_core.clone(), queue.clone(), /*is_mapped*/))
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^          ----- mutable borrow later used here
[INFO] [stderr]      |             |
[INFO] [stderr]      |             immutable borrow occurs here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling ocl-segfault v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.ocl_segfault.b6pkvvvr-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a" "/opt/crater/target/debug/deps/ocl_segfault-da9cf75868a7c71a.53msdvyrfgp0ujey.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/target/debug/build/backtrace-sys-c2febbcf7097c7fa/out" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libocl-3363d38e837d2590.rlib" "/opt/crater/target/debug/deps/libqutex-777962e2ce7222e3.rlib" "/opt/crater/target/debug/deps/libcrossbeam-f829e8abab7adb97.rlib" "/opt/crater/target/debug/deps/libnodrop-d84e124200a37cb9.rlib" "/opt/crater/target/debug/deps/libocl_core-dc54a4c80c14ba48.rlib" "/opt/crater/target/debug/deps/libcl_sys-48b9277afbe14397.rlib" "/opt/crater/target/debug/deps/libocl_core_vector-b921abe8e716dea4.rlib" "/opt/crater/target/debug/deps/libnum_complex-a23fb6f5e8a30d76.rlib" "/opt/crater/target/debug/deps/librustc_serialize-349ba31664dfb847.rlib" "/opt/crater/target/debug/deps/libenum_primitive-6987b771fb6288d0.rlib" "/opt/crater/target/debug/deps/libnum_traits-99e156cfd42c8803.rlib" "/opt/crater/target/debug/deps/libbitflags-c8c60b0ee6ae609a.rlib" "/opt/crater/target/debug/deps/libfailure-2242458f767f7dc9.rlib" "/opt/crater/target/debug/deps/libbacktrace-b46c2156bd9321d9.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-9f8a71c01f75bd46.rlib" "/opt/crater/target/debug/deps/librustc_demangle-8a1b2caa5e80a574.rlib" "/opt/crater/target/debug/deps/libcfg_if-e77f5c4458926ef5.rlib" "/opt/crater/target/debug/deps/liblibc-62bf195eedd01b9b.rlib" "/opt/crater/target/debug/deps/libfutures-cfc3bc29a16ed034.rlib" "/opt/crater/target/debug/deps/libnum_traits-f9bba35fc380a970.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.rlib" "-Wl,-Bdynamic" "-lOpenCL" "-lOpenCL" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lOpenCL
[INFO] [stderr]           /usr/bin/ld: cannot find -lOpenCL
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ocl-segfault`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4f79cc5402a18db604898841ab4d7c995cbdfed5593592e84c94b49b3760a956"`
[INFO] running `"docker" "rm" "-f" "4f79cc5402a18db604898841ab4d7c995cbdfed5593592e84c94b49b3760a956"`
[INFO] [stdout] 4f79cc5402a18db604898841ab4d7c995cbdfed5593592e84c94b49b3760a956