[INFO] cloning repository https://github.com/egli/regexp-dragon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/egli/regexp-dragon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fegli%2Fregexp-dragon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fegli%2Fregexp-dragon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e06044acb4863f0fb529ae8e83cd4db3ffda77c
[INFO] checking egli/regexp-dragon against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fegli%2Fregexp-dragon" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/egli/regexp-dragon on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/egli/regexp-dragon
[INFO] finished tweaking git repo https://github.com/egli/regexp-dragon
[INFO] tweaked toml for git repo https://github.com/egli/regexp-dragon written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/egli/regexp-dragon 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399265c6f75485e6e2f45ece3ed54d74565972033098edaed6e0a2f8f2325259
[INFO] running `Command { std: "docker" "start" "-a" "399265c6f75485e6e2f45ece3ed54d74565972033098edaed6e0a2f8f2325259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399265c6f75485e6e2f45ece3ed54d74565972033098edaed6e0a2f8f2325259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399265c6f75485e6e2f45ece3ed54d74565972033098edaed6e0a2f8f2325259", kill_on_drop: false }`
[INFO] [stdout] 399265c6f75485e6e2f45ece3ed54d74565972033098edaed6e0a2f8f2325259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ba4c8b4d8a78bd5114892a7f5bf48c0335dd5d3e1e6eb5fdd762703b419caee
[INFO] running `Command { std: "docker" "start" "-a" "2ba4c8b4d8a78bd5114892a7f5bf48c0335dd5d3e1e6eb5fdd762703b419caee", kill_on_drop: false }`
[INFO] [stderr]     Checking dragon-regexp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum Boundary {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 26 |     Word,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 27 |     NotWord,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 28 |     Number,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     NumberWord,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     WordNumber,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     PrePattern,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 32 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Boundary` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Start`, `End`, and `Epsilon` are never constructed
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum Transition {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 40 |     Start(Boundary),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 41 |     End(Boundary),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     Epsilon,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transition` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Any`, `ZeroOrMore`, `Optional`, and `Either` are never constructed
[INFO] [stdout]   --> src/main.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | enum AST {
[INFO] [stdout]    |      --- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 74 |     Any,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 75 |     Concat(Box<AST>, Box<AST>),
[INFO] [stdout] 76 |     ZeroOrMore(Box<AST>),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 77 |     Optional(Box<AST>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 78 |     OneOrMore(Box<AST>),
[INFO] [stdout] 79 |     Either(Box<AST>, Box<AST>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum Boundary {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 26 |     Word,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 27 |     NotWord,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 28 |     Number,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     NumberWord,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     WordNumber,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     PrePattern,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 32 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Boundary` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Start`, `End`, and `Epsilon` are never constructed
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | enum Transition {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 40 |     Start(Boundary),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 41 |     End(Boundary),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     Epsilon,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transition` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "2ba4c8b4d8a78bd5114892a7f5bf48c0335dd5d3e1e6eb5fdd762703b419caee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ba4c8b4d8a78bd5114892a7f5bf48c0335dd5d3e1e6eb5fdd762703b419caee", kill_on_drop: false }`
[INFO] [stdout] 2ba4c8b4d8a78bd5114892a7f5bf48c0335dd5d3e1e6eb5fdd762703b419caee