[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] documenting jkelleyrtp/comparch_labs against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjkelleyrtp%2Fcomparch_labs" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/jkelleyrtp/comparch_labs on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-37/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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/yewstack/yew/`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.56
[INFO] [stderr]   Downloaded input_buffer v0.2.0
[INFO] [stderr]   Downloaded security-framework v0.3.4
[INFO] [stderr]   Downloaded security-framework-sys v0.3.3
[INFO] [stderr]   Downloaded tungstenite v0.9.2
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.56
[INFO] [stderr]   Downloaded anyhow v1.0.25
[INFO] [stderr]   Downloaded js-sys v0.3.33
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.56
[INFO] [stderr]   Downloaded web-sys v0.3.33
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.6
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bbcd33f97acf213e72389834accdd727d4ce3e00808947bf7cca8431b2f8fed
[INFO] running `Command { std: "docker" "start" "-a" "1bbcd33f97acf213e72389834accdd727d4ce3e00808947bf7cca8431b2f8fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bbcd33f97acf213e72389834accdd727d4ce3e00808947bf7cca8431b2f8fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbcd33f97acf213e72389834accdd727d4ce3e00808947bf7cca8431b2f8fed", kill_on_drop: false }`
[INFO] [stdout] 1bbcd33f97acf213e72389834accdd727d4ce3e00808947bf7cca8431b2f8fed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 159fd66e9f648d52fb744a1c04d7a5df3ce3676963fdf0d508ae743a538fecfb
[INFO] running `Command { std: "docker" "start" "-a" "159fd66e9f648d52fb744a1c04d7a5df3ce3676963fdf0d508ae743a538fecfb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking unicode-xid v0.1.0
[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 failure_derive v0.1.6
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling base-x v0.2.6
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling yew v0.10.1 (https://github.com/yewstack/yew/#72ca3bb7)
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling yew-macro v0.10.1 (https://github.com/yewstack/yew/#72ca3bb7)
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]  Documenting verilated-module v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated-module)
[INFO] [stderr]  Documenting verilator v0.1.3 (/opt/rustwide/workdir/rust/backend/verilator)
[INFO] [stderr]     Checking tungstenite v0.9.2
[INFO] [stderr]    Compiling verilator v0.1.3 (/opt/rustwide/workdir/rust/backend/verilator)
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling verilated v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated)
[INFO] [stderr]    Compiling verilated-module v0.1.1 (/opt/rustwide/workdir/rust/backend/verilated-module)
[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]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[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-eeda72c8de0ea187/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:     0x5630788a26c0 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5630788a26c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5630788a26c0 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5630788a26c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5630788c1dcc - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x56307889f0d5 - std::io::Write::write_fmt::hd42607e5d8e44db0
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x5630788a48cb - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5630788a48cb - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5630788a48cb - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5630788a43a1 - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x5630788a4f94 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x5630788a4a77 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x5630788a2b9c - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5630788a49d9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x56307882fc0b - std::panicking::begin_panic_fmt::h746518bde832d259
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:457:5
[INFO] [stderr]     15:     0x563078832af3 - build_script_build::fail::he9b22dacb56e47d4
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/backend/verilated/build.rs:16:5
[INFO] [stderr]     16:     0x563078832bad - build_script_build::main::h5685cc080984de99
[INFO] [stderr]                                  at /opt/rustwide/workdir/rust/backend/verilated/build.rs:71:9
[INFO] [stderr]     17:     0x563078831efb - core::ops::function::FnOnce::call_once::ha0a63345ad0b9ba7
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     18:     0x5630788320ce - std::sys_common::backtrace::__rust_begin_short_backtrace::h3f2c39b3bd539abd
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     19:     0x563078831c71 - std::rt::lang_start::{{closure}}::h3dd85abdfed39f36
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:63:18
[INFO] [stderr]     20:     0x5630788a549a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha88a7d1a4d24e549
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     21:     0x5630788a549a - std::panicking::try::do_call::hd3b1d7740607ccc7
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     22:     0x5630788a549a - std::panicking::try::h0ee8c65ac7461507
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     23:     0x5630788a549a - std::panic::catch_unwind::head47f0de4ccd838
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     24:     0x5630788a549a - std::rt::lang_start_internal::{{closure}}::hbc7de8ec820ac085
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:48
[INFO] [stderr]     25:     0x5630788a549a - std::panicking::try::do_call::h2609e52e8bad4a7b
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     26:     0x5630788a549a - std::panicking::try::hd0929f0b603e0389
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     27:     0x5630788a549a - std::panic::catch_unwind::h27902b81c3e47571
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     28:     0x5630788a549a - std::rt::lang_start_internal::h3fb2d794dd391e3e
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:20
[INFO] [stderr]     29:     0x563078831c40 - std::rt::lang_start::h2047988a15b2fd92
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:62:5
[INFO] [stderr]     30:     0x5630788333cc - main
[INFO] [stderr]     31:     0x7fd2ed75f0b3 - __libc_start_main
[INFO] [stderr]     32:     0x563078830b1e - _start
[INFO] [stderr]     33:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "159fd66e9f648d52fb744a1c04d7a5df3ce3676963fdf0d508ae743a538fecfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159fd66e9f648d52fb744a1c04d7a5df3ce3676963fdf0d508ae743a538fecfb", kill_on_drop: false }`
[INFO] [stdout] 159fd66e9f648d52fb744a1c04d7a5df3ce3676963fdf0d508ae743a538fecfb
