[INFO] fetching crate tension 0.0.2...
[INFO] testing tension-0.0.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate tension 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tension 0.0.2 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tension 0.0.2
[INFO] finished tweaking crates.io crate tension 0.0.2
[INFO] tweaked toml for crates.io crate tension 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5debd3e4003981eb98fb4b1444a65ff62a571318d42a1e2b737053cc526b8296
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5debd3e4003981eb98fb4b1444a65ff62a571318d42a1e2b737053cc526b8296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5debd3e4003981eb98fb4b1444a65ff62a571318d42a1e2b737053cc526b8296", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5debd3e4003981eb98fb4b1444a65ff62a571318d42a1e2b737053cc526b8296", kill_on_drop: false }`
[INFO] [stdout] 5debd3e4003981eb98fb4b1444a65ff62a571318d42a1e2b737053cc526b8296
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5cd9cd89017496063eb383c6888e2ce705fbf4b58dc44815032d4cc360f6402
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5cd9cd89017496063eb383c6888e2ce705fbf4b58dc44815032d4cc360f6402", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling cl-sys v0.4.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling futures v0.1.30
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling ocl-core v0.11.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling qutex v0.2.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling ocl-core-vector v0.1.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling ocl v0.19.3
[INFO] [stderr]    Compiling tension v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "d5cd9cd89017496063eb383c6888e2ce705fbf4b58dc44815032d4cc360f6402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5cd9cd89017496063eb383c6888e2ce705fbf4b58dc44815032d4cc360f6402", kill_on_drop: false }`
[INFO] [stdout] d5cd9cd89017496063eb383c6888e2ce705fbf4b58dc44815032d4cc360f6402
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8ff8be2d548479a838b1aae9f7d0de06297e034a7bca06904fe5a3b06796ae5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b8ff8be2d548479a838b1aae9f7d0de06297e034a7bca06904fe5a3b06796ae5", kill_on_drop: false }`
[INFO] [stderr]    Compiling tension v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.tension.175knx6i-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4" "/opt/rustwide/target/debug/deps/tension-30edba9dde3405b4.wahyc4hccdcqhsr.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-6609e81d71a1bf05.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-c352aab3e89370e6.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-5a89b15f567bd092.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-f48d3ad387757b0f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-bf2dc5d6d88f70a5.rlib" "/opt/rustwide/target/debug/deps/libocl-09fed2292c77afbe.rlib" "/opt/rustwide/target/debug/deps/libqutex-cd9974447c23614d.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam-e7754c41f157f8b6.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_queue-b0535afb18dcbfef.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_channel-902c0c35291145a2.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-d64ec853b8dd2517.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-b23cc33dd2d240e2.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-61a8585eac99cded.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-2e6b9c1d1cc3a259.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-ff13728372c662eb.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-7895c92c6d278491.rlib" "/opt/rustwide/target/debug/deps/libmaybe_uninit-ba8c860573beb973.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-b10e0993eefc366b.rlib" "/opt/rustwide/target/debug/deps/libnodrop-66854b726d1a5e83.rlib" "/opt/rustwide/target/debug/deps/libocl_core-0a3e97fb5298084e.rlib" "/opt/rustwide/target/debug/deps/libcl_sys-0abc2724bfb14142.rlib" "/opt/rustwide/target/debug/deps/libocl_core_vector-b5dd9b863032eddd.rlib" "/opt/rustwide/target/debug/deps/libnum-edfdbaa04f135193.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-fb9ac6d410dc856b.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-4f6de7eaa5b2ec1e.rlib" "/opt/rustwide/target/debug/deps/librand-26ff6dc32e2129b5.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-591f2b4f2b08a1af.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-3729ceb8bc9f32a6.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-a3966b2c9635e4f3.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-cf160550f07bf347.rlib" "/opt/rustwide/target/debug/deps/libenum_primitive-443ebf02ab39565b.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-2558ba7d3cb8a2d4.rlib" "/opt/rustwide/target/debug/deps/libbitflags-de31228f2c0549ed.rlib" "/opt/rustwide/target/debug/deps/libfailure-df428a0ba79b6858.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-f1b8f703a2014f1d.rlib" "/opt/rustwide/target/debug/deps/libminiz_oxide-717c95e0ca43996f.rlib" "/opt/rustwide/target/debug/deps/libadler-797761d55cc6d77d.rlib" "/opt/rustwide/target/debug/deps/libobject-3398b1b82a61cf88.rlib" "/opt/rustwide/target/debug/deps/liblibc-e0846f52673851a4.rlib" "/opt/rustwide/target/debug/deps/libaddr2line-57a8d78d4ce5a557.rlib" "/opt/rustwide/target/debug/deps/libgimli-0a231e394c8ed583.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-d836a7202f0431f0.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-f324c5343369256d.rlib" "/opt/rustwide/target/debug/deps/libfutures-adb515f94880e447.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-a72546ec3dc1dd6e.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-18626a41c01c6e49.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lOpenCL" "-lOpenCL" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lOpenCL
[INFO] [stdout]           /usr/bin/ld: cannot find -lOpenCL
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tension`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b8ff8be2d548479a838b1aae9f7d0de06297e034a7bca06904fe5a3b06796ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ff8be2d548479a838b1aae9f7d0de06297e034a7bca06904fe5a3b06796ae5", kill_on_drop: false }`
[INFO] [stdout] b8ff8be2d548479a838b1aae9f7d0de06297e034a7bca06904fe5a3b06796ae5