[INFO] cloning repository https://github.com/yyogo/lemma
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yyogo/lemma" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyogo%2Flemma", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyogo%2Flemma'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb194161fc673d398cb2588dea46216733a89082
[INFO] checking yyogo/lemma against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf-spurious
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyogo%2Flemma" "/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/yyogo/lemma
[INFO] finished tweaking git repo https://github.com/yyogo/lemma
[INFO] tweaked toml for git repo https://github.com/yyogo/lemma written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yyogo/lemma on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yyogo/lemma 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded endian-type v0.1.2
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded smol_str v0.3.2
[INFO] [stderr]   Downloaded fd-lock v4.0.4
[INFO] [stderr]   Downloaded rustyline v15.0.0
[INFO] [stderr]   Downloaded radix_trie v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f346b5c7380f4aa88572a203903adca7bcafdc616f43308731bbcd60b883cb05
[INFO] running `Command { std: "docker" "start" "-a" "f346b5c7380f4aa88572a203903adca7bcafdc616f43308731bbcd60b883cb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f346b5c7380f4aa88572a203903adca7bcafdc616f43308731bbcd60b883cb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f346b5c7380f4aa88572a203903adca7bcafdc616f43308731bbcd60b883cb05", kill_on_drop: false }`
[INFO] [stdout] f346b5c7380f4aa88572a203903adca7bcafdc616f43308731bbcd60b883cb05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d49861c3a8ba88e0ab85f8887ac024380a0e834f08c09fa1fc4729609d24e35
[INFO] running `Command { std: "docker" "start" "-a" "7d49861c3a8ba88e0ab85f8887ac024380a0e834f08c09fa1fc4729609d24e35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]    Compiling rustix v1.0.3
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking linux-raw-sys v0.9.3
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking home v0.5.11
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking smol_str v0.3.2
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]     Checking fd-lock v4.0.4
[INFO] [stderr]     Checking rustyline v15.0.0
[INFO] [stderr]     Checking lemma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_redex` is never used
[INFO] [stdout]   --> src/ast.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl Term {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn is_redex(&self) -> bool {
[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 `Env` is never constructed
[INFO] [stdout]  --> src/eval.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Env {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, `get`, and `substitute` are never used
[INFO] [stdout]   --> src/eval.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Env {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn set(&mut self, var: Variable, term: Term) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn get(&self, var: &Variable) -> Option<&Term> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn substitute(&self, term: Term) -> Term {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numeral` is never used
[INFO] [stdout]  --> src/church.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn numeral(n: usize) -> ast::Term {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_redex` and `alpha_equiv` are never used
[INFO] [stdout]    --> src/ast.rs:81:12
[INFO] [stdout]     |
[INFO] [stdout]  68 | impl Term {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  81 |     pub fn is_redex(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     pub fn alpha_equiv(&self, other: &Term) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `var` is never used
[INFO] [stdout]    --> src/ast.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 | pub fn var(v: impl Into<Variable>) -> Term {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Env` is never constructed
[INFO] [stdout]  --> src/eval.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Env {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, `get`, and `substitute` are never used
[INFO] [stdout]   --> src/eval.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Env {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn set(&mut self, var: Variable, term: Term) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn get(&self, var: &Variable) -> Option<&Term> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn substitute(&self, term: Term) -> Term {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numeral` is never used
[INFO] [stdout]  --> src/church.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn numeral(n: usize) -> ast::Term {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.98s
[INFO] running `Command { std: "docker" "inspect" "7d49861c3a8ba88e0ab85f8887ac024380a0e834f08c09fa1fc4729609d24e35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d49861c3a8ba88e0ab85f8887ac024380a0e834f08c09fa1fc4729609d24e35", kill_on_drop: false }`
[INFO] [stdout] 7d49861c3a8ba88e0ab85f8887ac024380a0e834f08c09fa1fc4729609d24e35