[INFO] updating cached repository https://github.com/AdamHarries/task_opencl
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d68f84960013c215289c9a5a1631f9a393b1420d
[INFO] testing AdamHarries/task_opencl against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdamHarries%2Ftask_opencl" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AdamHarries/task_opencl on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AdamHarries/task_opencl
[INFO] finished tweaking git repo https://github.com/AdamHarries/task_opencl
[INFO] tweaked toml for git repo https://github.com/AdamHarries/task_opencl written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/AdamHarries/task_opencl already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-1/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/AdamHarries/rust-opencl.git`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stdout] f8068074f719cf0803542e09d43ecda7fcd9f89068388be1d858a617f5adaf75
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f8068074f719cf0803542e09d43ecda7fcd9f89068388be1d858a617f5adaf75"`
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling opencl v0.3.0-dev (https://github.com/AdamHarries/rust-opencl.git#f98b4a4c)
[INFO] [stderr]    Compiling task-opencl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/bin/queue.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 |         for i in 0..queue_length {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_from_slice`
[INFO] [stderr]   --> src/bin/queue.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn string_from_slice<T: fmt::Display>(slice: &[T]) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[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/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.queue.bn6vk9nt-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208" "/opt/rustwide/target/debug/deps/queue-f22a14a57e2f3208.ovfui6kavfgg5x9.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libopencl-c1be1d2cf5a3ec7e.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-26a3a548d6bb9511.rlib" "/opt/rustwide/target/debug/deps/liblog-bd3d795ce9bbd9ff.rlib" "/opt/rustwide/target/debug/deps/liblog-e05329b9ca199b2b.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-7bfa6ddb9b2ff1d3.rlib" "/opt/rustwide/target/debug/deps/liblibc-c529c38856022132.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-62f93208e14fa8f0.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-b2c4dbe979cef5e2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-8b9b66cb3e9f891d.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5998b08bf29f56ac.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-efd1670396ccb585.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6435b9209e888961.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-866e5dfb603b34d2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-75eac3089695b3b4.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-35744537b4825584.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-f7ee5081d96fb2cd.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-5b28479cb639d76c.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-f827473dd3b319fa.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-53f9c299c549c6a9.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-44132fbb3fcc18d3.rlib" "-Wl,-Bdynamic" "-lOpenCL" "-lc" "-lm" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stderr]   = note: /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; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `task-opencl`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f8068074f719cf0803542e09d43ecda7fcd9f89068388be1d858a617f5adaf75"`
[INFO] running `"docker" "rm" "-f" "f8068074f719cf0803542e09d43ecda7fcd9f89068388be1d858a617f5adaf75"`
[INFO] [stdout] f8068074f719cf0803542e09d43ecda7fcd9f89068388be1d858a617f5adaf75