[INFO] cloning repository https://github.com/JosephSullivan256/Rust-Rewriting-System
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JosephSullivan256/Rust-Rewriting-System" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephSullivan256%2FRust-Rewriting-System", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephSullivan256%2FRust-Rewriting-System'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a61af9ba72738714469d5c8d459544374b7008a3
[INFO] checking JosephSullivan256/Rust-Rewriting-System against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephSullivan256%2FRust-Rewriting-System" "/workspace/builds/worker-49/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-49/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephSullivan256/Rust-Rewriting-System on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephSullivan256/Rust-Rewriting-System
[INFO] finished tweaking git repo https://github.com/JosephSullivan256/Rust-Rewriting-System
[INFO] tweaked toml for git repo https://github.com/JosephSullivan256/Rust-Rewriting-System written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephSullivan256/Rust-Rewriting-System already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f46e3921e30d2f5524a2803e1ee847efd6d223092f082780a0b78d174d55ebb
[INFO] running `Command { std: "docker" "start" "-a" "2f46e3921e30d2f5524a2803e1ee847efd6d223092f082780a0b78d174d55ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f46e3921e30d2f5524a2803e1ee847efd6d223092f082780a0b78d174d55ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f46e3921e30d2f5524a2803e1ee847efd6d223092f082780a0b78d174d55ebb", kill_on_drop: false }`
[INFO] [stdout] 2f46e3921e30d2f5524a2803e1ee847efd6d223092f082780a0b78d174d55ebb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef2cbe99df8eee99809a85d99c57b001e6fd16719b2c3236f548b0e884197d9
[INFO] running `Command { std: "docker" "start" "-a" "fef2cbe99df8eee99809a85d99c57b001e6fd16719b2c3236f548b0e884197d9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking lexer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rules`
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let rules = vec![
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rules`
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let rules = vec![
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new() -> Parser{
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_regex`
[INFO] [stdout]   --> src/parser.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new_with_regex(constant_regex : Regex) -> Parser{
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `inverted`
[INFO] [stdout]   --> src/property.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn inverted(&self) -> Property {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `natural_numbers`
[INFO] [stdout]   --> src/main.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn natural_numbers(){ //equivalent to peano axioms
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new() -> Parser{
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_regex`
[INFO] [stdout]   --> src/parser.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new_with_regex(constant_regex : Regex) -> Parser{
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `inverted`
[INFO] [stdout]   --> src/property.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn inverted(&self) -> Property {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `natural_numbers`
[INFO] [stdout]   --> src/main.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn natural_numbers(){ //equivalent to peano axioms
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "fef2cbe99df8eee99809a85d99c57b001e6fd16719b2c3236f548b0e884197d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef2cbe99df8eee99809a85d99c57b001e6fd16719b2c3236f548b0e884197d9", kill_on_drop: false }`
[INFO] [stdout] fef2cbe99df8eee99809a85d99c57b001e6fd16719b2c3236f548b0e884197d9