[INFO] updating cached repository Slimakanzer/RustLearning
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Slimakanzer/RustLearning
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Slimakanzer/RustLearning" "work/ex/beta-1.38-1/sources/1.37.0/gh/Slimakanzer/RustLearning"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Slimakanzer/RustLearning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Slimakanzer/RustLearning" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Slimakanzer/RustLearning"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Slimakanzer/RustLearning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d67fde7e6bfae169f924a7815220b16935e8b568
[INFO] sha for GitHub repo Slimakanzer/RustLearning: d67fde7e6bfae169f924a7815220b16935e8b568
[INFO] validating manifest of Slimakanzer/RustLearning on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Slimakanzer/RustLearning on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Slimakanzer/RustLearning
[INFO] finished frobbing Slimakanzer/RustLearning
[INFO] frobbed toml for Slimakanzer/RustLearning written to work/ex/beta-1.38-1/sources/1.37.0/gh/Slimakanzer/RustLearning/Cargo.toml
[INFO] started frobbing Slimakanzer/RustLearning
[INFO] finished frobbing Slimakanzer/RustLearning
[INFO] frobbed toml for Slimakanzer/RustLearning written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Slimakanzer/RustLearning/Cargo.toml
[INFO] crate Slimakanzer/RustLearning already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Slimakanzer/RustLearning against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Slimakanzer/RustLearning:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 045238f88370af9b372aec43e292a2328661d2034f74aca11a079d6eef82962c
[INFO] running `"docker" "start" "-a" "045238f88370af9b372aec43e292a2328661d2034f74aca11a079d6eef82962c"`
[INFO] [stderr]    Compiling cl-sys v0.4.1
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling colorify v0.2.3
[INFO] [stderr]    Compiling qutex v0.2.1
[INFO] [stderr]    Compiling ocl-core v0.9.0
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling ocl-core-vector v0.1.0
[INFO] [stderr]    Compiling ocl v0.18.0
[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/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/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/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/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/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/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/registry/src/github.com-1ecc6299db9ec823/ocl-0.18.0/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 rust_learning 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-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.rust_learning.cacsy8xn-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308" "/opt/crater/target/debug/deps/rust_learning-e89db25d58844308.2y1wwd0mta6updr0.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-4101916840cec155/out" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libcolorify-2debe430a364cff8.rlib" "/opt/crater/target/debug/deps/libocl-3268f6f64e248172.rlib" "/opt/crater/target/debug/deps/libqutex-d9aa6d091c83bf29.rlib" "/opt/crater/target/debug/deps/libcrossbeam-b7feb6e2b32da9c7.rlib" "/opt/crater/target/debug/deps/libnodrop-77b1df44365c6506.rlib" "/opt/crater/target/debug/deps/libocl_core-7f3206044095bb2f.rlib" "/opt/crater/target/debug/deps/libcl_sys-df27b239500f2cdf.rlib" "/opt/crater/target/debug/deps/libocl_core_vector-f76b656575d1e30f.rlib" "/opt/crater/target/debug/deps/libnum-5fcf4bca777bca96.rlib" "/opt/crater/target/debug/deps/libnum_rational-d67a5d5ce23299fc.rlib" "/opt/crater/target/debug/deps/libnum_bigint-de0d981e5f0f2661.rlib" "/opt/crater/target/debug/deps/librand-8aabafb077b32774.rlib" "/opt/crater/target/debug/deps/libnum_iter-4e3c9ade6a0e188c.rlib" "/opt/crater/target/debug/deps/libnum_integer-1aea5f7ced06a086.rlib" "/opt/crater/target/debug/deps/libnum_complex-dd1f167477d647d1.rlib" "/opt/crater/target/debug/deps/librustc_serialize-fc0a027b4489f806.rlib" "/opt/crater/target/debug/deps/libenum_primitive-21816892d7e6b382.rlib" "/opt/crater/target/debug/deps/libnum_traits-27dc4fb5de826b06.rlib" "/opt/crater/target/debug/deps/libbitflags-9f040734986e226a.rlib" "/opt/crater/target/debug/deps/libfailure-dd9764ad898938c9.rlib" "/opt/crater/target/debug/deps/libbacktrace-8bb69588e316be20.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-2029bacbcee69b9f.rlib" "/opt/crater/target/debug/deps/librustc_demangle-6c846ebe94ea55f9.rlib" "/opt/crater/target/debug/deps/libcfg_if-009022f74140c129.rlib" "/opt/crater/target/debug/deps/liblibc-9543c9559dc5df0d.rlib" "/opt/crater/target/debug/deps/libfutures-52593fd28aa0bbc1.rlib" "/opt/crater/target/debug/deps/libnum_traits-b8521d0bebe12052.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.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 `rust_learning`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "045238f88370af9b372aec43e292a2328661d2034f74aca11a079d6eef82962c"`
[INFO] running `"docker" "rm" "-f" "045238f88370af9b372aec43e292a2328661d2034f74aca11a079d6eef82962c"`
[INFO] [stdout] 045238f88370af9b372aec43e292a2328661d2034f74aca11a079d6eef82962c