[INFO] cloning repository https://github.com/Chriscodesstuff/verilog_sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chriscodesstuff/verilog_sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChriscodesstuff%2Fverilog_sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChriscodesstuff%2Fverilog_sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66f905febbff147d67005b71da7266b5609e52f6
[INFO] checking Chriscodesstuff/verilog_sim against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChriscodesstuff%2Fverilog_sim" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chriscodesstuff/verilog_sim on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Chriscodesstuff/verilog_sim
[INFO] finished tweaking git repo https://github.com/Chriscodesstuff/verilog_sim
[INFO] tweaked toml for git repo https://github.com/Chriscodesstuff/verilog_sim written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Chriscodesstuff/verilog_sim 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustlr v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5506502a4db233d4f1035427ade1e8cd63bad0dde3d3ad97d62a7fc98be40656
[INFO] running `Command { std: "docker" "start" "-a" "5506502a4db233d4f1035427ade1e8cd63bad0dde3d3ad97d62a7fc98be40656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5506502a4db233d4f1035427ade1e8cd63bad0dde3d3ad97d62a7fc98be40656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5506502a4db233d4f1035427ade1e8cd63bad0dde3d3ad97d62a7fc98be40656", kill_on_drop: false }`
[INFO] [stdout] 5506502a4db233d4f1035427ade1e8cd63bad0dde3d3ad97d62a7fc98be40656
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 938483c981d6abcc07088ff86b08d61d8282174fe61aaf02c88f8125db76eadf
[INFO] running `Command { std: "docker" "start" "-a" "938483c981d6abcc07088ff86b08d61d8282174fe61aaf02c88f8125db76eadf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rustlr v0.2.4
[INFO] [stderr]     Checking verilog_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/simulator/event_queue.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/simulator/event_queue.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/simulator.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Value { Zero, One, X, Z }
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NetType` is never used
[INFO] [stdout]  --> src/simulator.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum NetType {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Net` is never constructed
[INFO] [stdout]   --> src/simulator.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Net {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Simulation` is never constructed
[INFO] [stdout]   --> src/simulator.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Simulation {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Event` is never used
[INFO] [stdout]  --> src/simulator/event_queue.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Event {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EventQueue` is never constructed
[INFO] [stdout]   --> src/simulator/event_queue.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct EventQueue {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `schedule_event`, `activate_inactive`, `activate_future`, and `pop_event` are never used
[INFO] [stdout]   --> src/simulator/event_queue.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl EventQueue {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 22 |     fn new() -> EventQueue {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn schedule_event(&mut self, e: Event, t: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn activate_inactive(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn activate_future(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn pop_event(&mut self) -> Option<(Event, u32)> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]  --> src/simulator.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Value { Zero, One, X, Z }
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NetType` is never used
[INFO] [stdout]  --> src/simulator.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum NetType {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Net` is never constructed
[INFO] [stdout]   --> src/simulator.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Net {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Simulation` is never constructed
[INFO] [stdout]   --> src/simulator.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Simulation {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.04s
[INFO] running `Command { std: "docker" "inspect" "938483c981d6abcc07088ff86b08d61d8282174fe61aaf02c88f8125db76eadf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938483c981d6abcc07088ff86b08d61d8282174fe61aaf02c88f8125db76eadf", kill_on_drop: false }`
[INFO] [stdout] 938483c981d6abcc07088ff86b08d61d8282174fe61aaf02c88f8125db76eadf