[INFO] cloning repository https://github.com/jkelleyrtp/comparch_labs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jkelleyrtp/comparch_labs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkelleyrtp%2Fcomparch_labs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkelleyrtp%2Fcomparch_labs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 200a7e80af326d325a30dd97694370115a94964c
[INFO] testing jkelleyrtp/comparch_labs against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkelleyrtp%2Fcomparch_labs" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jkelleyrtp/comparch_labs on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jkelleyrtp/comparch_labs
[INFO] finished tweaking git repo https://github.com/jkelleyrtp/comparch_labs
[INFO] tweaked toml for git repo https://github.com/jkelleyrtp/comparch_labs written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/jkelleyrtp/comparch_labs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f47635f122fcc4e6b97f189393bf44700f4d2d060bd70782867a01e8d31fab6
[INFO] running `Command { std: "docker" "start" "-a" "2f47635f122fcc4e6b97f189393bf44700f4d2d060bd70782867a01e8d31fab6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f47635f122fcc4e6b97f189393bf44700f4d2d060bd70782867a01e8d31fab6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f47635f122fcc4e6b97f189393bf44700f4d2d060bd70782867a01e8d31fab6", kill_on_drop: false }`
[INFO] [stdout] 2f47635f122fcc4e6b97f189393bf44700f4d2d060bd70782867a01e8d31fab6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f19a911dbfc9eead1d7b78da43492126ad0e5150cada8fb2381ad5686be8b1f0
[INFO] running `Command { std: "docker" "start" "-a" "f19a911dbfc9eead1d7b78da43492126ad0e5150cada8fb2381ad5686be8b1f0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling smallvec v1.1.0
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling base-x v0.2.6
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling yew v0.10.1 (https://github.com/yewstack/yew/#72ca3bb7)
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling yew-macro v0.10.1 (https://github.com/yewstack/yew/#72ca3bb7)
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.11
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling verilator v0.1.3 (/opt/rustwide/workdir/rust/backend/verilator)
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling verilated-module v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated-module)
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling verilated v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated)
[INFO] [stderr]    Compiling example v0.0.0 (/opt/rustwide/workdir/rust/backend/example)
[INFO] [stderr]    Compiling cpu_backend v0.1.0 (/opt/rustwide/workdir/rust/cpu_backend)
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr] error: failed to run custom build command for `cpu_backend v0.1.0 (/opt/rustwide/workdir/rust/cpu_backend)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cpu_backend-79b7ea660f7e4f42/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   12 items
[INFO] [stderr]   cargo:rerun-if-changed=src/main.rs
[INFO] [stderr]   running: "verilator_bin" "--getenv" "VERILATOR_ROOT"
[INFO] [stderr]   verilator root: ""
[INFO] [stderr]   running: "verilator_bin" "--cc" "-Mdir" "/opt/rustwide/target/debug/build/cpu_backend-00a54878c306cb7d/out" "--top-module" "top" "--coverage" "--trace" "+1364-2001ext+v" "../backend/example/rtl/counter.v" "+1364-2001ext+v" "../backend/example/rtl/top.v" "/opt/rustwide/target/debug/build/cpu_backend-00a54878c306cb7d/out/top.cpp"
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at '
[INFO] [stderr]   failed to execute command: No such file or directory (os error 2)
[INFO] [stderr]   is `verilator` not installed?
[INFO] [stderr] 
[INFO] [stderr]   build script failed, must exit now', rust/backend/verilator/src/gen.rs:339:5
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x559d7864b0ec - std::backtrace_rs::backtrace::libunwind::trace::h7630ba4cba718aa0
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x559d7864b0ec - std::backtrace_rs::backtrace::trace_unsynchronized::he7498e79c157f5ac
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x559d7864b0ec - std::sys_common::backtrace::_print_fmt::hdaebadaee17bca49
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x559d7864b0ec - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h82b0e3aaf8a96140
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x559d7866bd4c - core::fmt::write::h72801a82c94e6ff1
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/core/src/fmt/mod.rs:1149:17
[INFO] [stderr]      5:     0x559d78646b05 - std::io::Write::write_fmt::hc2da38dc44811df8
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/io/mod.rs:1697:15
[INFO] [stderr]      6:     0x559d7864cf60 - std::sys_common::backtrace::_print::h1c9a1d19c48821c1
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x559d7864cf60 - std::sys_common::backtrace::print::h7ce8802039fa9d0e
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x559d7864cf60 - std::panicking::default_hook::{{closure}}::hb2a74a8c1499c326
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:211:50
[INFO] [stderr]      9:     0x559d7864cb0b - std::panicking::default_hook::hf4f180b00076f2b2
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:228:9
[INFO] [stderr]     10:     0x559d7864d614 - std::panicking::rust_panic_with_hook::he85ce8435493b711
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:606:17
[INFO] [stderr]     11:     0x559d7864d0f0 - std::panicking::begin_panic_handler::{{closure}}::h31e15f69e6235bd2
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:502:13
[INFO] [stderr]     12:     0x559d7864b5a4 - std::sys_common::backtrace::__rust_end_short_backtrace::hfce2fadb61aaa3ae
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stderr]     13:     0x559d7864d059 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:498:5
[INFO] [stderr]     14:     0x559d78447261 - core::panicking::panic_fmt::h7b8580d81fcbbacd
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/core/src/panicking.rs:107:14
[INFO] [stderr]     15:     0x559d7845ef63 - verilator::gen::fail::heab82ff032ded44a
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/backend/verilator/src/gen.rs:339:5
[INFO] [stderr]     16:     0x559d7845ea6a - verilator::gen::run::h29cf72a85b96d9cb
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/backend/verilator/src/gen.rs:316:13
[INFO] [stderr]     17:     0x559d7845cbf8 - verilator::gen::Verilator::build::h8dec926ae1e7ae81
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/backend/verilator/src/gen.rs:188:9
[INFO] [stderr]     18:     0x559d78447eb7 - build_script_build::main::h3c2af4640ea1825e
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/cpu_backend/build.rs:29:5
[INFO] [stderr]     19:     0x559d7844867b - core::ops::function::FnOnce::call_once::h45e1390ccecaddd3
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x559d78447f4e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb8ab28d9fd5a5e4a
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/sys_common/backtrace.rs:123:18
[INFO] [stderr]     21:     0x559d784488c1 - std::rt::lang_start::{{closure}}::hb2f0fae3de8ce4e1
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/rt.rs:145:18
[INFO] [stderr]     22:     0x559d7864a931 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h0e73392810ecd318
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x559d7864a931 - std::panicking::try::do_call::h12dcb4a4f352a507
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:406:40
[INFO] [stderr]     24:     0x559d7864a931 - std::panicking::try::h0d978c76ab4a3863
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:370:19
[INFO] [stderr]     25:     0x559d7864a931 - std::panic::catch_unwind::hab40227675186980
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panic.rs:133:14
[INFO] [stderr]     26:     0x559d7864a931 - std::rt::lang_start_internal::{{closure}}::hc34786299e7d2cf7
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/rt.rs:128:48
[INFO] [stderr]     27:     0x559d7864a931 - std::panicking::try::do_call::h38e7a9128f21d387
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:406:40
[INFO] [stderr]     28:     0x559d7864a931 - std::panicking::try::h32d4e72fd8922bce
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panicking.rs:370:19
[INFO] [stderr]     29:     0x559d7864a931 - std::panic::catch_unwind::h9a345671d889d41f
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/panic.rs:133:14
[INFO] [stderr]     30:     0x559d7864a931 - std::rt::lang_start_internal::h9e691a4f557eb2a3
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/rt.rs:128:20
[INFO] [stderr]     31:     0x559d78448890 - std::rt::lang_start::h85ac8d2d56a902e9
[INFO] [stderr]                                  at /rustc/a77da2d454e6caa227a85b16410b95f93495e7e0/library/std/src/rt.rs:144:17
[INFO] [stderr]     32:     0x559d78447f3c - main
[INFO] [stderr]     33:     0x7f30ba5bb0b3 - __libc_start_main
[INFO] [stderr]     34:     0x559d7844799e - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f19a911dbfc9eead1d7b78da43492126ad0e5150cada8fb2381ad5686be8b1f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f19a911dbfc9eead1d7b78da43492126ad0e5150cada8fb2381ad5686be8b1f0", kill_on_drop: false }`
[INFO] [stdout] f19a911dbfc9eead1d7b78da43492126ad0e5150cada8fb2381ad5686be8b1f0