[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] checking jkelleyrtp/comparch_labs against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkelleyrtp%2Fcomparch_labs" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jkelleyrtp/comparch_labs on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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-2/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" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cedd69f73362318d78d4fb68ef5096c5abe55bc7a630c6ce85707cfbf7c9454b [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" "cedd69f73362318d78d4fb68ef5096c5abe55bc7a630c6ce85707cfbf7c9454b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cedd69f73362318d78d4fb68ef5096c5abe55bc7a630c6ce85707cfbf7c9454b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cedd69f73362318d78d4fb68ef5096c5abe55bc7a630c6ce85707cfbf7c9454b", kill_on_drop: false }` [INFO] [stdout] cedd69f73362318d78d4fb68ef5096c5abe55bc7a630c6ce85707cfbf7c9454b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ca7fe5e7c65423de36266bafb0fd26d89bb1992124970d70392e460333d76d6d [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" "ca7fe5e7c65423de36266bafb0fd26d89bb1992124970d70392e460333d76d6d", kill_on_drop: false }` [INFO] [stderr] Compiling cc v1.0.48 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling syn v1.0.11 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Compiling itoa v0.4.4 [INFO] [stderr] Compiling stdweb-internal-runtime v0.1.5 [INFO] [stderr] Compiling openssl v0.10.26 [INFO] [stderr] Compiling sha1 v0.6.0 [INFO] [stderr] Compiling base-x v0.2.6 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling yew v0.10.1 (https://github.com/yewstack/yew/#72ca3bb7) [INFO] [stderr] Compiling boolinator v2.4.0 [INFO] [stderr] Checking discard v1.0.4 [INFO] [stderr] Checking anymap v0.12.1 [INFO] [stderr] Checking slab v0.4.2 [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 log v0.4.8 [INFO] [stderr] Checking libc v0.2.66 [INFO] [stderr] Checking ryu v1.0.0 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Compiling stdweb v0.4.20 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking sha-1 v0.8.1 [INFO] [stderr] Compiling quote v0.5.2 [INFO] [stderr] Compiling syn v0.13.11 [INFO] [stderr] Checking url v2.1.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling openssl-sys v0.9.53 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking http v0.1.21 [INFO] [stderr] Checking input_buffer v0.2.0 [INFO] [stderr] Checking rand v0.7.2 [INFO] [stderr] Checking backtrace v0.3.40 [INFO] [stderr] Checking verilator v0.1.3 (/opt/rustwide/workdir/rust/backend/verilator) [INFO] [stderr] Checking verilated-module v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated-module) [INFO] [stdout] warning: field is never read: `target` [INFO] [stdout] --> rust/backend/verilator/src/module.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | target: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `target` [INFO] [stdout] --> rust/backend/verilator/src/module.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | target: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking tungstenite v0.9.2 [INFO] [stdout] warning: field is never read: `target` [INFO] [stdout] --> rust/backend/verilator/src/module.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | target: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling verilated v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated) [INFO] [stderr] Compiling cpu_backend v0.1.0 (/opt/rustwide/workdir/rust/cpu_backend) [INFO] [stderr] Compiling example v0.0.0 (/opt/rustwide/workdir/rust/backend/example) [INFO] [stderr] error: failed to run custom build command for `verilated v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/verilated-0647f0965d8d44c9/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at ' [INFO] [stderr] Failed to find `${VERILATOR_ROOT}`. Please set `VERILATOR_ROOT` environment variable or ensure `verilator` is in `PATH`. [INFO] [stderr] [INFO] [stderr] build script failed, must exit now', rust/backend/verilated/build.rs:16:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5647a33cc4a0 - std::backtrace_rs::backtrace::libunwind::trace::hec7eaac9435d3512 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x5647a33cc4a0 - std::backtrace_rs::backtrace::trace_unsynchronized::h42791b8fa12b7daa [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5647a33cc4a0 - std::sys_common::backtrace::_print_fmt::h3da3ebe04fb665a8 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x5647a33cc4a0 - ::fmt::he40bcdde3c4491cd [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x5647a33ec08f - core::fmt::write::h2c729149c08098ab [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/core/src/fmt/mod.rs:1094:17 [INFO] [stderr] 5: 0x5647a33c8f25 - std::io::Write::write_fmt::h28e0f2f58b8d7b7e [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/io/mod.rs:1578:15 [INFO] [stderr] 6: 0x5647a33ce5ab - std::sys_common::backtrace::_print::h7f0223b1e3d898fc [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x5647a33ce5ab - std::sys_common::backtrace::print::h58edd634a14c2d4c [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x5647a33ce5ab - std::panicking::default_hook::{{closure}}::h71657a7591430164 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x5647a33ce08d - std::panicking::default_hook::hcdf4eb5db072c85b [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x5647a33ceb5d - std::panicking::rust_panic_with_hook::hfb91e961ffb5b8e0 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x5647a33ce757 - std::panicking::begin_panic_handler::{{closure}}::h984d540e84311150 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x5647a33cc93c - std::sys_common::backtrace::__rust_end_short_backtrace::h32354258ff2aecd1 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x5647a33ce6b9 - rust_begin_unwind [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x5647a335aa2b - std::panicking::begin_panic_fmt::ha0ce415375ca426f [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:435:5 [INFO] [stderr] 15: 0x5647a335d823 - build_script_build::fail::hde680f5e83c261fc [INFO] [stderr] at /opt/rustwide/workdir/rust/backend/verilated/build.rs:16:5 [INFO] [stderr] 16: 0x5647a335d890 - build_script_build::main::h3ae2bb8222dfa3c5 [INFO] [stderr] at /opt/rustwide/workdir/rust/backend/verilated/build.rs:71:9 [INFO] [stderr] 17: 0x5647a335ed2b - core::ops::function::FnOnce::call_once::hd9782c62fbfeb856 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 18: 0x5647a335cece - std::sys_common::backtrace::__rust_begin_short_backtrace::h8cd4fcbc91ed9241 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 19: 0x5647a335cc21 - std::rt::lang_start::{{closure}}::h08a9faa668777de3 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/rt.rs:66:18 [INFO] [stderr] 20: 0x5647a33cef5a - core::ops::function::impls:: for &F>::call_once::hd5953dadf0bc8f54 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 21: 0x5647a33cef5a - std::panicking::try::do_call::h23b369f1996fb7d4 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:379:40 [INFO] [stderr] 22: 0x5647a33cef5a - std::panicking::try::he017ee9ed6bce192 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panicking.rs:343:19 [INFO] [stderr] 23: 0x5647a33cef5a - std::panic::catch_unwind::hbfb892340a78b30d [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/panic.rs:431:14 [INFO] [stderr] 24: 0x5647a33cef5a - std::rt::lang_start_internal::hce6e4c0ce56abb51 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/rt.rs:51:25 [INFO] [stderr] 25: 0x5647a335cc00 - std::rt::lang_start::hf92407e2a415a3e1 [INFO] [stderr] at /rustc/4fa76a4a7742bb9c1febe33019f5a9e7e4839a65/library/std/src/rt.rs:65:5 [INFO] [stderr] 26: 0x5647a335e0ec - main [INFO] [stderr] 27: 0x7fa795aba0b3 - __libc_start_main [INFO] [stderr] 28: 0x5647a335b8ce - _start [INFO] [stderr] 29: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "ca7fe5e7c65423de36266bafb0fd26d89bb1992124970d70392e460333d76d6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca7fe5e7c65423de36266bafb0fd26d89bb1992124970d70392e460333d76d6d", kill_on_drop: false }` [INFO] [stdout] ca7fe5e7c65423de36266bafb0fd26d89bb1992124970d70392e460333d76d6d