[INFO] cloning repository https://github.com/pimpale/rust-mnist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pimpale/rust-mnist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpimpale%2Frust-mnist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpimpale%2Frust-mnist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd0455566036f7e68dec6bf6cc9262f4cf89ee80
[INFO] checking pimpale/rust-mnist/dd0455566036f7e68dec6bf6cc9262f4cf89ee80 against master#733108b6d4acaa93fe26ae281ea305aacd6aac4e for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpimpale%2Frust-mnist" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pimpale/rust-mnist
[INFO] finished tweaking git repo https://github.com/pimpale/rust-mnist
[INFO] tweaked toml for git repo https://github.com/pimpale/rust-mnist written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pimpale/rust-mnist on toolchain 733108b6d4acaa93fe26ae281ea305aacd6aac4e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733108b6d4acaa93fe26ae281ea305aacd6aac4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pimpale/rust-mnist already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733108b6d4acaa93fe26ae281ea305aacd6aac4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/coreylowman/dfdx`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.5.0
[INFO] [stderr]   Downloaded cudarc v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+733108b6d4acaa93fe26ae281ea305aacd6aac4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d706f5a62aa77c9e360ef6ace3898a846e134966918453ac3aab721a4707505
[INFO] running `Command { std: "docker" "start" "-a" "7d706f5a62aa77c9e360ef6ace3898a846e134966918453ac3aab721a4707505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d706f5a62aa77c9e360ef6ace3898a846e134966918453ac3aab721a4707505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d706f5a62aa77c9e360ef6ace3898a846e134966918453ac3aab721a4707505", kill_on_drop: false }`
[INFO] [stdout] 7d706f5a62aa77c9e360ef6ace3898a846e134966918453ac3aab721a4707505
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+733108b6d4acaa93fe26ae281ea305aacd6aac4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b064d683ccaee4da9f277721553539b6cd1ac790981d3483c99e541a942983f6
[INFO] running `Command { std: "docker" "start" "-a" "b064d683ccaee4da9f277721553539b6cd1ac790981d3483c99e541a942983f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling cudarc v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling dfdx v0.10.0 (https://github.com/coreylowman/dfdx#0b53be59)
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking mnist v0.5.0
[INFO] [stderr] error: failed to run custom build command for `cudarc v0.9.0`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cudarc-3a452d34b4c19e0a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr]   cargo:rerun-if-env-changed=CUDA_ROOT
[INFO] [stderr]   cargo:rerun-if-env-changed=CUDA_PATH
[INFO] [stderr]   cargo:rerun-if-env-changed=CUDA_TOOLKIT_ROOT_DIR
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (95) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cudarc-0.9.0/build.rs:16:29:
[INFO] [stderr]   Cuda root not found
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x64db3bc38e62 - std::backtrace_rs::backtrace::libunwind::trace::h336fa6cbda11d7da
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x64db3bc38e62 - std::backtrace_rs::backtrace::trace_unsynchronized::hdd3caca2f7bc912d
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x64db3bc38e62 - std::sys::backtrace::_print_fmt::hd331b0c9511a99ae
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x64db3bc38e62 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h1994e61875dd2f2a
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x64db3bc47a37 - core::fmt::rt::Argument::fmt::hb884d9236ffe22a5
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x64db3bc47a37 - core::fmt::write::h94ae3adc0037c305
[INFO] [stderr]      6:     0x64db3bc17846 - std::io::default_write_fmt::h338733cd46b32ee7
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x64db3bc17846 - std::io::Write::write_fmt::hf145160a44bf8905
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x64db3bc1e021 - std::sys::backtrace::BacktraceLock::print::hc709f40974e386fc
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x64db3bc1e021 - std::panicking::default_hook::{{closure}}::h97869b26213cfdd1
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:293:27
[INFO] [stderr]     10:     0x64db3bc1de46 - std::panicking::default_hook::h12325a7204458032
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:320:9
[INFO] [stderr]     11:     0x64db3bc1e52b - std::panicking::panic_with_hook::h43cbe56cc59fc5e6
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:826:13
[INFO] [stderr]     12:     0x64db3bc1e3a8 - std::panicking::panic_handler::{{closure}}::h026d7e278a1a94d3
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:699:13
[INFO] [stderr]     13:     0x64db3bc1c979 - std::sys::backtrace::__rust_end_short_backtrace::h61696f1ef97ec08d
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x64db3bc0c45d - __rustc[9da61800b7c1d17]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:690:5
[INFO] [stderr]     15:     0x64db3bc4a7bc - core::panicking::panic_fmt::h376ce795c5298f0d
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x64db3bc4a0b4 - core::panicking::panic_display::h80989527373962d7
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/core/src/panicking.rs:259:5
[INFO] [stderr]     17:     0x64db3bc4a0b4 - core::option::expect_failed::h9ca886512b3fdf25
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/core/src/option.rs:2184:5
[INFO] [stderr]     18:     0x64db3bc0b681 - core::option::Option<T>::expect::h8c925624ebb58815
[INFO] [stderr]     19:     0x64db3bc09c80 - build_script_build::link_cuda::hb40f7f9dfd208a8c
[INFO] [stderr]     20:     0x64db3bc09963 - build_script_build::main::h7feac829e1dda16f
[INFO] [stderr]     21:     0x64db3bc0a2b3 - core::ops::function::FnOnce::call_once::h18ce3ce9deb2273c
[INFO] [stderr]     22:     0x64db3bc09fd6 - std::sys::backtrace::__rust_begin_short_backtrace::h6370a7eb5fb62ca4
[INFO] [stderr]     23:     0x64db3bc09f39 - std::rt::lang_start::{{closure}}::h1ef42f9336dfb260
[INFO] [stderr]     24:     0x64db3bc18aea - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h17171ace6974aa8f
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     25:     0x64db3bc18aea - std::panicking::catch_unwind::do_call::h7f6df566c2bad775
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:582:40
[INFO] [stderr]     26:     0x64db3bc18aea - std::panicking::catch_unwind::hb99c8ff3052425d2
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:545:19
[INFO] [stderr]     27:     0x64db3bc18aea - std::panic::catch_unwind::h227a70d8d07d79e6
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panic.rs:359:14
[INFO] [stderr]     28:     0x64db3bc18aea - std::rt::lang_start_internal::{{closure}}::hb92f0c824b843011
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/rt.rs:175:24
[INFO] [stderr]     29:     0x64db3bc18aea - std::panicking::catch_unwind::do_call::h837acadf86977c09
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:582:40
[INFO] [stderr]     30:     0x64db3bc18aea - std::panicking::catch_unwind::hfffc6b58fde015bc
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panicking.rs:545:19
[INFO] [stderr]     31:     0x64db3bc18aea - std::panic::catch_unwind::he0f0d9ab4801dcd5
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/panic.rs:359:14
[INFO] [stderr]     32:     0x64db3bc18aea - std::rt::lang_start_internal::h6df14bee4fb30353
[INFO] [stderr]                                  at /rustc/733108b6d4acaa93fe26ae281ea305aacd6aac4e/library/std/src/rt.rs:171:5
[INFO] [stderr]     33:     0x64db3bc09f21 - std::rt::lang_start::hc30f5dfe46346de7
[INFO] [stderr]     34:     0x64db3bc0c135 - main
[INFO] [stderr]     35:     0x7670666801ca - <unknown>
[INFO] [stderr]     36:     0x76706668028b - __libc_start_main
[INFO] [stderr]     37:     0x64db3bc08f95 - _start
[INFO] [stderr]     38:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b064d683ccaee4da9f277721553539b6cd1ac790981d3483c99e541a942983f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b064d683ccaee4da9f277721553539b6cd1ac790981d3483c99e541a942983f6", kill_on_drop: false }`
[INFO] [stdout] b064d683ccaee4da9f277721553539b6cd1ac790981d3483c99e541a942983f6