Sep 10 06:52:11.591 INFO checking verilated-0.1.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 06:52:11.591 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 06:52:11.591 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 06:52:11.747 INFO blam! 554c55b0b287e0ffbbac988f604189b55fdfa4d30bff3aa04f4e9ddabf053a45
Sep 10 06:52:11.749 INFO running `"docker" "start" "-a" "554c55b0b287e0ffbbac988f604189b55fdfa4d30bff3aa04f4e9ddabf053a45"`
Sep 10 06:52:12.433 INFO kablam! usermod: no changes
Sep 10 06:52:12.461 INFO kablam!    Compiling verilator v0.1.1
Sep 10 06:52:12.828 INFO kablam!    Compiling verilated v0.1.1 (file:///source)
Sep 10 06:52:13.474 INFO kablam! error: failed to run custom build command for `verilated v0.1.1 (file:///source)`
Sep 10 06:52:13.474 INFO kablam! process didn't exit successfully: `/target/debug/build/verilated-bad95771f2cd67d7/build-script-build` (exit code: 101)
Sep 10 06:52:13.474 INFO kablam! --- stderr
Sep 10 06:52:13.474 INFO kablam! thread 'main' panicked at '
Sep 10 06:52:13.474 INFO kablam! Failed to find `${VERILATOR_ROOT}`.  Please set `VERILATOR_ROOT` environment variable or ensure `verilator` is in `PATH`.
Sep 10 06:52:13.474 INFO kablam! 
Sep 10 06:52:13.474 INFO kablam! build script failed, must exit now', build.rs:16:5
Sep 10 06:52:13.474 INFO kablam! stack backtrace:
Sep 10 06:52:13.474 INFO kablam!    0:     0x5624db611c7e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6fe5173ae235b38f
Sep 10 06:52:13.474 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 10 06:52:13.474 INFO kablam!    1:     0x5624db601b46 - std::sys_common::backtrace::print::hb1efbd3d067eabc6
Sep 10 06:52:13.474 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 10 06:52:13.474 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 10 06:52:13.474 INFO kablam!    2:     0x5624db5fff2d - std::panicking::default_hook::{{closure}}::h109166af4c755142
Sep 10 06:52:13.474 INFO kablam!                                at libstd/panicking.rs:211
Sep 10 06:52:13.474 INFO kablam!    3:     0x5624db5ffca0 - std::panicking::default_hook::h992f159215e34f14
Sep 10 06:52:13.474 INFO kablam!                                at libstd/panicking.rs:227
Sep 10 06:52:13.474 INFO kablam!    4:     0x5624db60059c - std::panicking::rust_panic_with_hook::h7d90dcad0bb485f2
Sep 10 06:52:13.474 INFO kablam!                                at libstd/panicking.rs:477
Sep 10 06:52:13.475 INFO kablam!    5:     0x5624db600199 - std::panicking::continue_panic_fmt::hd1c785c0ba366e26
Sep 10 06:52:13.475 INFO kablam!                                at libstd/panicking.rs:391
Sep 10 06:52:13.475 INFO kablam!    6:     0x5624db6000fd - std::panicking::begin_panic_fmt::he0daf7f8d899f95f
Sep 10 06:52:13.475 INFO kablam!                                at libstd/panicking.rs:346
Sep 10 06:52:13.475 INFO kablam!    7:     0x5624db589ea1 - build_script_build::fail::h44b5b0b8eabbda25
Sep 10 06:52:13.475 INFO kablam!                                at /source/build.rs:16
Sep 10 06:52:13.475 INFO kablam!    8:     0x5624db589f2b - build_script_build::main::h11bd58c2af2f29bc
Sep 10 06:52:13.475 INFO kablam!                                at /source/build.rs:71
Sep 10 06:52:13.475 INFO kablam!    9:     0x5624db58af5f - std::rt::lang_start::{{closure}}::hf36ff5583d2fb537
Sep 10 06:52:13.475 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 10 06:52:13.475 INFO kablam!   10:     0x5624db600032 - std::panicking::try::do_call::h2ece1f76d9e135ca
Sep 10 06:52:13.475 INFO kablam!                                at libstd/rt.rs:59
Sep 10 06:52:13.475 INFO kablam!                                at libstd/panicking.rs:310
Sep 10 06:52:13.475 INFO kablam!   11:     0x5624db624339 - __rust_maybe_catch_panic
Sep 10 06:52:13.475 INFO kablam!                                at libpanic_unwind/lib.rs:103
Sep 10 06:52:13.475 INFO kablam!   12:     0x5624db60d475 - std::rt::lang_start_internal::h72dcb4aefab2c171
Sep 10 06:52:13.475 INFO kablam!                                at libstd/panicking.rs:289
Sep 10 06:52:13.475 INFO kablam!                                at libstd/panic.rs:392
Sep 10 06:52:13.475 INFO kablam!                                at libstd/rt.rs:58
Sep 10 06:52:13.475 INFO kablam!   13:     0x5624db58af37 - std::rt::lang_start::hd29d371d421a15b3
Sep 10 06:52:13.475 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 10 06:52:13.475 INFO kablam!   14:     0x5624db58a939 - main
Sep 10 06:52:13.475 INFO kablam!   15:     0x7f7ec500482f - __libc_start_main
Sep 10 06:52:13.475 INFO kablam!   16:     0x5624db588818 - _start
Sep 10 06:52:13.475 INFO kablam!   17:                0x0 - <unknown>
Sep 10 06:52:13.475 INFO kablam! 
Sep 10 06:52:13.487 INFO kablam! su: No module specific data is present
Sep 10 06:52:13.990 INFO running `"docker" "rm" "-f" "554c55b0b287e0ffbbac988f604189b55fdfa4d30bff3aa04f4e9ddabf053a45"`
Sep 10 06:52:14.057 INFO blam! 554c55b0b287e0ffbbac988f604189b55fdfa4d30bff3aa04f4e9ddabf053a45