[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 eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[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 eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smol_str v0.3.2
[INFO] [stderr]   Downloaded rustix v1.0.3
[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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789
[INFO] running `Command { std: "docker" "start" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789", 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" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789", 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" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.3
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]     Checking linux-raw-sys v0.9.3
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking home v0.5.11
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]     Checking unicode-width v0.2.0
[INFO] [stderr]     Checking smol_str v0.3.2
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[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: 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] [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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.77s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.29.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789", kill_on_drop: false }`
[INFO] [stdout] f5cf41e80b71ba14d9442a9f2e5654ae05f74d52c7f1bd486634bc90190de789
