[INFO] cloning repository https://github.com/ukikagi/reglang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ukikagi/reglang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukikagi%2Freglang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukikagi%2Freglang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 467c392d8e7552ea5a15d5a1ff0d1809690098ef
[INFO] checking ukikagi/reglang against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukikagi%2Freglang" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ukikagi/reglang
[INFO] finished tweaking git repo https://github.com/ukikagi/reglang
[INFO] tweaked toml for git repo https://github.com/ukikagi/reglang written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ukikagi/reglang on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ukikagi/reglang 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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.4.0
[INFO] [stderr]   Downloaded anyhow v1.0.40
[INFO] [stderr]   Downloaded itertools v0.10.0
[INFO] [stderr]   Downloaded nom v6.1.2
[INFO] [stderr]   Downloaded bitvec v0.19.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1
[INFO] running `Command { std: "docker" "start" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking radium v0.5.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking reglang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LazyNfa` is never used
[INFO] [stdout]  --> src/lazy/lazy_nfa.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait LazyNfa {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnionNfa` is never constructed
[INFO] [stdout]  --> src/lazy/union.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct UnionNfa<L: LazyNfa, R: LazyNfa> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sum` is never used
[INFO] [stdout]   --> src/lazy/union.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Sum<L, R> {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `LazyNfa` is never used
[INFO] [stdout]  --> src/lazy/lazy_nfa.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait LazyNfa {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnionNfa` is never constructed
[INFO] [stdout]  --> src/lazy/union.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct UnionNfa<L: LazyNfa, R: LazyNfa> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sum` is never used
[INFO] [stdout]   --> src/lazy/union.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Sum<L, R> {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.53s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1", kill_on_drop: false }`
[INFO] [stdout] e404afec2f10101682e182df7d71a934949e76aab1e9b82f27cffa41f00b3ac1
