[INFO] cloning repository https://github.com/newmancodes/rust-logical-reasoning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/newmancodes/rust-logical-reasoning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Frust-logical-reasoning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Frust-logical-reasoning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34e4589a30e5cf817644f90caf28b33e146dbf04
[INFO] checking newmancodes/rust-logical-reasoning against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewmancodes%2Frust-logical-reasoning" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/newmancodes/rust-logical-reasoning on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/newmancodes/rust-logical-reasoning
[INFO] finished tweaking git repo https://github.com/newmancodes/rust-logical-reasoning
[INFO] tweaked toml for git repo https://github.com/newmancodes/rust-logical-reasoning written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/newmancodes/rust-logical-reasoning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 93b70b0d591f2518d282b7a82c9174514f8d7b7c8407473e64bfe4acb385f128
[INFO] running `Command { std: "docker" "start" "-a" "93b70b0d591f2518d282b7a82c9174514f8d7b7c8407473e64bfe4acb385f128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93b70b0d591f2518d282b7a82c9174514f8d7b7c8407473e64bfe4acb385f128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93b70b0d591f2518d282b7a82c9174514f8d7b7c8407473e64bfe4acb385f128", kill_on_drop: false }`
[INFO] [stdout] 93b70b0d591f2518d282b7a82c9174514f8d7b7c8407473e64bfe4acb385f128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1944a243bb5f2192def03b63681af3cf3f77e0632722f82f21ca137454e3989e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1944a243bb5f2192def03b63681af3cf3f77e0632722f82f21ca137454e3989e", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking rust-logical-reasoning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `ForwardChaining`
[INFO] [stdout]  --> src/forward_chaining.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct ForwardChaining {
[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`
[INFO] [stdout]  --> src/forward_chaining.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new(knowledge_base: Vec<HornClause>) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `entails`
[INFO] [stdout]   --> src/forward_chaining.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn entails(self, n: i8) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `HornClause`
[INFO] [stdout]  --> src/horn_clause.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct HornClause {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/horn_clause.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new(literals: Vec<i8>) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/horn_clause.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn iter(&self) -> std::slice::Iter<'_, i8> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "1944a243bb5f2192def03b63681af3cf3f77e0632722f82f21ca137454e3989e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1944a243bb5f2192def03b63681af3cf3f77e0632722f82f21ca137454e3989e", kill_on_drop: false }`
[INFO] [stdout] 1944a243bb5f2192def03b63681af3cf3f77e0632722f82f21ca137454e3989e