[INFO] cloning repository https://github.com/philzook58/egg-dl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/philzook58/egg-dl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilzook58%2Fegg-dl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilzook58%2Fegg-dl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 291de866f864cc5e1784cddcc64869c4515d806e
[INFO] testing philzook58/egg-dl against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphilzook58%2Fegg-dl" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/philzook58/egg-dl on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/philzook58/egg-dl
[INFO] finished tweaking git repo https://github.com/philzook58/egg-dl
[INFO] tweaked toml for git repo https://github.com/philzook58/egg-dl written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/philzook58/egg-dl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "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] e1ec97a1393f540f424973295182e53ffa236fc130f4e02bf2b0f6a48446696d
[INFO] running `Command { std: "docker" "start" "-a" "e1ec97a1393f540f424973295182e53ffa236fc130f4e02bf2b0f6a48446696d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1ec97a1393f540f424973295182e53ffa236fc130f4e02bf2b0f6a48446696d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ec97a1393f540f424973295182e53ffa236fc130f4e02bf2b0f6a48446696d", kill_on_drop: false }`
[INFO] [stdout] e1ec97a1393f540f424973295182e53ffa236fc130f4e02bf2b0f6a48446696d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d4f7760907bc5012b2eda6a6f9ca5d05d08272c826b75bb0b727295defbecbe
[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" "5d4f7760907bc5012b2eda6a6f9ca5d05d08272c826b75bb0b727295defbecbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.77
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling bumpalo v3.7.0
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling wasm-bindgen v0.2.77
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling os_str_bytes v3.1.0
[INFO] [stderr]    Compiling symbolic_expressions v5.0.3
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.77
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.77
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.4
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.77
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling egg v0.6.1-dev (https://github.com/philzook58/egg?branch=proof#bf144359)
[INFO] [stderr]    Compiling clap v3.0.0-beta.4
[INFO] [stderr]    Compiling egglog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/lib.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 | use std::fs;
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:132:28
[INFO] [stdout]     |
[INFO] [stdout] 132 |             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 132 -             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout] 132 +             .flat_map(|p| <dyn Searcher<L, A>>::vars(p))
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:432:13
[INFO] [stdout]     |
[INFO] [stdout] 432 |         Var(x) => panic!("Impossible"), // should parse formula at groundterms.
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:455:13
[INFO] [stdout]     |
[INFO] [stdout] 455 |         Var(x) => panic!("Impossible"),
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/lib.rs:507:45
[INFO] [stdout]     |
[INFO] [stdout] 507 |         Directive(types::Directive::Include(filename)) => (), // load_file(state, &filename).unwrap(),
[INFO] [stdout]     |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]     --> src/lib.rs:1031:41
[INFO] [stdout]      |
[INFO] [stdout] 1031 | pub fn run_wasm(s: String, proof: bool, graph: bool) -> String {
[INFO] [stdout]      |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `searcher_ast`
[INFO] [stdout]    --> src/lib.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         searcher_ast: Option<&PatternAst<L>>,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_searcher_ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rule_name`
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         rule_name: Arc<str>,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Axiom`
[INFO] [stdout]  --> src/logic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Axiom(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goal`
[INFO] [stdout]  --> src/logic.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Goal(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GoalFormula`
[INFO] [stdout]   --> src/logic.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum GoalFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `PatternFormula`
[INFO] [stdout]   --> src/logic.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum PatternFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ApplierFormula`
[INFO] [stdout]   --> src/logic.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 | enum ApplierFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `AtomicFormula`
[INFO] [stdout]   --> src/logic.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | type AtomicFormula = EqWrap<Term>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ProgramFormula`
[INFO] [stdout]   --> src/logic.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ProgramFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `SymMultiPattern`
[INFO] [stdout]    --> src/lib.rs:372:1
[INFO] [stdout]     |
[INFO] [stdout] 372 | type SymMultiPattern = MultiPattern<EqWrap<Pattern<SymbolLang>>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `runner`
[INFO] [stdout]    --> src/lib.rs:377:5
[INFO] [stdout]     |
[INFO] [stdout] 377 |     runner: Runner<SymbolLang, ()>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rules`
[INFO] [stdout]    --> src/lib.rs:378:5
[INFO] [stdout]     |
[INFO] [stdout] 378 |     rules: Vec<egg::Rewrite<SymbolLang, ()>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `queries`
[INFO] [stdout]    --> src/lib.rs:379:5
[INFO] [stdout]     |
[INFO] [stdout] 379 |     queries: Vec<MultiPattern<EqWrap<Pattern<SymbolLang>>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_program2`
[INFO] [stdout]    --> src/lib.rs:587:4
[INFO] [stdout]     |
[INFO] [stdout] 587 | fn run_program2(prog: &Program) -> Vec<Vec<Subst>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Sequent`
[INFO] [stdout]    --> src/lib.rs:733:8
[INFO] [stdout]     |
[INFO] [stdout] 733 | struct Sequent {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:359:5
[INFO] [stdout]     |
[INFO] [stdout] 359 |     write!(buf, "[");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:945:9
[INFO] [stdout]     |
[INFO] [stdout] 945 |         writeln!(buf, "-? {}", q);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:948:13
[INFO] [stdout]     |
[INFO] [stdout] 948 |             writeln!(buf, "unknown.");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:951:17
[INFO] [stdout]     |
[INFO] [stdout] 951 |                 print_subst(&mut buf, &runner.egraph, &subst);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:968:29
[INFO] [stdout]     |
[INFO] [stdout] 968 | / ...                   writeln!(
[INFO] [stdout] 969 | | ...                       buf,
[INFO] [stdout] 970 | | ...                       "Proof {} = {}: {}",
[INFO] [stdout] 971 | | ...                       a,
[INFO] [stdout] 972 | | ...                       b,
[INFO] [stdout] 973 | | ...                       runner.explain_equivalence(&start, &end).get_flat_string()
[INFO] [stdout] 974 | | ...                   );
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `Command { std: "docker" "inspect" "5d4f7760907bc5012b2eda6a6f9ca5d05d08272c826b75bb0b727295defbecbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d4f7760907bc5012b2eda6a6f9ca5d05d08272c826b75bb0b727295defbecbe", kill_on_drop: false }`
[INFO] [stdout] 5d4f7760907bc5012b2eda6a6f9ca5d05d08272c826b75bb0b727295defbecbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 3b27faa484be865090871c7e8a2e8003dacee207531306f8aaef97c4171978c8
[INFO] running `Command { std: "docker" "start" "-a" "3b27faa484be865090871c7e8a2e8003dacee207531306f8aaef97c4171978c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling egglog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/lib.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 | use std::fs;
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:132:28
[INFO] [stdout]     |
[INFO] [stdout] 132 |             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 132 -             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout] 132 +             .flat_map(|p| <dyn Searcher<L, A>>::vars(p))
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:432:13
[INFO] [stdout]     |
[INFO] [stdout] 432 |         Var(x) => panic!("Impossible"), // should parse formula at groundterms.
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:455:13
[INFO] [stdout]     |
[INFO] [stdout] 455 |         Var(x) => panic!("Impossible"),
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/lib.rs:507:45
[INFO] [stdout]     |
[INFO] [stdout] 507 |         Directive(types::Directive::Include(filename)) => (), // load_file(state, &filename).unwrap(),
[INFO] [stdout]     |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]     --> src/lib.rs:1031:41
[INFO] [stdout]      |
[INFO] [stdout] 1031 | pub fn run_wasm(s: String, proof: bool, graph: bool) -> String {
[INFO] [stdout]      |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `searcher_ast`
[INFO] [stdout]    --> src/lib.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         searcher_ast: Option<&PatternAst<L>>,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_searcher_ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rule_name`
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         rule_name: Arc<str>,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Axiom`
[INFO] [stdout]  --> src/logic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Axiom(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goal`
[INFO] [stdout]  --> src/logic.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Goal(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GoalFormula`
[INFO] [stdout]   --> src/logic.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum GoalFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `PatternFormula`
[INFO] [stdout]   --> src/logic.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum PatternFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ApplierFormula`
[INFO] [stdout]   --> src/logic.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 | enum ApplierFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `AtomicFormula`
[INFO] [stdout]   --> src/logic.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | type AtomicFormula = EqWrap<Term>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ProgramFormula`
[INFO] [stdout]   --> src/logic.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ProgramFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `SymMultiPattern`
[INFO] [stdout]    --> src/lib.rs:372:1
[INFO] [stdout]     |
[INFO] [stdout] 372 | type SymMultiPattern = MultiPattern<EqWrap<Pattern<SymbolLang>>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `runner`
[INFO] [stdout]    --> src/lib.rs:377:5
[INFO] [stdout]     |
[INFO] [stdout] 377 |     runner: Runner<SymbolLang, ()>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rules`
[INFO] [stdout]    --> src/lib.rs:378:5
[INFO] [stdout]     |
[INFO] [stdout] 378 |     rules: Vec<egg::Rewrite<SymbolLang, ()>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `queries`
[INFO] [stdout]    --> src/lib.rs:379:5
[INFO] [stdout]     |
[INFO] [stdout] 379 |     queries: Vec<MultiPattern<EqWrap<Pattern<SymbolLang>>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_program2`
[INFO] [stdout]    --> src/lib.rs:587:4
[INFO] [stdout]     |
[INFO] [stdout] 587 | fn run_program2(prog: &Program) -> Vec<Vec<Subst>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Sequent`
[INFO] [stdout]    --> src/lib.rs:733:8
[INFO] [stdout]     |
[INFO] [stdout] 733 | struct Sequent {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:359:5
[INFO] [stdout]     |
[INFO] [stdout] 359 |     write!(buf, "[");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:945:9
[INFO] [stdout]     |
[INFO] [stdout] 945 |         writeln!(buf, "-? {}", q);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:948:13
[INFO] [stdout]     |
[INFO] [stdout] 948 |             writeln!(buf, "unknown.");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:951:17
[INFO] [stdout]     |
[INFO] [stdout] 951 |                 print_subst(&mut buf, &runner.egraph, &subst);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:968:29
[INFO] [stdout]     |
[INFO] [stdout] 968 | / ...                   writeln!(
[INFO] [stdout] 969 | | ...                       buf,
[INFO] [stdout] 970 | | ...                       "Proof {} = {}: {}",
[INFO] [stdout] 971 | | ...                       a,
[INFO] [stdout] 972 | | ...                       b,
[INFO] [stdout] 973 | | ...                       runner.explain_equivalence(&start, &end).get_flat_string()
[INFO] [stdout] 974 | | ...                   );
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stdout]     --> tests/example.rs:9:10
[INFO] [stdout]      |
[INFO] [stdout] 9    |     dbg!(run(contents));
[INFO] [stdout]      |          ^^^ -------- supplied 1 argument
[INFO] [stdout]      |          |
[INFO] [stdout]      |          expected 2 arguments
[INFO] [stdout]      |
[INFO] [stdout] note: function defined here
[INFO] [stdout]     --> /opt/rustwide/workdir/src/lib.rs:1015:8
[INFO] [stdout]      |
[INFO] [stdout] 1015 | pub fn run(s: String, opts: &Opts) -> Result<String, String> {
[INFO] [stdout]      |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `egglog` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/lib.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 | use std::fs;
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:132:28
[INFO] [stdout]     |
[INFO] [stdout] 132 |             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 132 -             .flat_map(|p| <Searcher<L, A>>::vars(p))
[INFO] [stdout] 132 +             .flat_map(|p| <dyn Searcher<L, A>>::vars(p))
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:432:13
[INFO] [stdout]     |
[INFO] [stdout] 432 |         Var(x) => panic!("Impossible"), // should parse formula at groundterms.
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:455:13
[INFO] [stdout]     |
[INFO] [stdout] 455 |         Var(x) => panic!("Impossible"),
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/lib.rs:507:45
[INFO] [stdout]     |
[INFO] [stdout] 507 |         Directive(types::Directive::Include(filename)) => (), // load_file(state, &filename).unwrap(),
[INFO] [stdout]     |                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]     --> src/lib.rs:1031:41
[INFO] [stdout]      |
[INFO] [stdout] 1031 | pub fn run_wasm(s: String, proof: bool, graph: bool) -> String {
[INFO] [stdout]      |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `searcher_ast`
[INFO] [stdout]    --> src/lib.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |         searcher_ast: Option<&PatternAst<L>>,
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_searcher_ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rule_name`
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         rule_name: Arc<str>,
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Axiom`
[INFO] [stdout]  --> src/logic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Axiom(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Goal`
[INFO] [stdout]  --> src/logic.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Goal(Formula),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GoalFormula`
[INFO] [stdout]   --> src/logic.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 | enum GoalFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `PatternFormula`
[INFO] [stdout]   --> src/logic.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum PatternFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ApplierFormula`
[INFO] [stdout]   --> src/logic.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 48 | enum ApplierFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `AtomicFormula`
[INFO] [stdout]   --> src/logic.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | type AtomicFormula = EqWrap<Term>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ProgramFormula`
[INFO] [stdout]   --> src/logic.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ProgramFormula {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `SymMultiPattern`
[INFO] [stdout]    --> src/lib.rs:372:1
[INFO] [stdout]     |
[INFO] [stdout] 372 | type SymMultiPattern = MultiPattern<EqWrap<Pattern<SymbolLang>>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `runner`
[INFO] [stdout]    --> src/lib.rs:377:5
[INFO] [stdout]     |
[INFO] [stdout] 377 |     runner: Runner<SymbolLang, ()>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rules`
[INFO] [stdout]    --> src/lib.rs:378:5
[INFO] [stdout]     |
[INFO] [stdout] 378 |     rules: Vec<egg::Rewrite<SymbolLang, ()>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `queries`
[INFO] [stdout]    --> src/lib.rs:379:5
[INFO] [stdout]     |
[INFO] [stdout] 379 |     queries: Vec<MultiPattern<EqWrap<Pattern<SymbolLang>>>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_program2`
[INFO] [stdout]    --> src/lib.rs:587:4
[INFO] [stdout]     |
[INFO] [stdout] 587 | fn run_program2(prog: &Program) -> Vec<Vec<Subst>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Sequent`
[INFO] [stdout]    --> src/lib.rs:733:8
[INFO] [stdout]     |
[INFO] [stdout] 733 | struct Sequent {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:359:5
[INFO] [stdout]     |
[INFO] [stdout] 359 |     write!(buf, "[");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:945:9
[INFO] [stdout]     |
[INFO] [stdout] 945 |         writeln!(buf, "-? {}", q);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:948:13
[INFO] [stdout]     |
[INFO] [stdout] 948 |             writeln!(buf, "unknown.");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:951:17
[INFO] [stdout]     |
[INFO] [stdout] 951 |                 print_subst(&mut buf, &runner.egraph, &subst);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:968:29
[INFO] [stdout]     |
[INFO] [stdout] 968 | / ...                   writeln!(
[INFO] [stdout] 969 | | ...                       buf,
[INFO] [stdout] 970 | | ...                       "Proof {} = {}: {}",
[INFO] [stdout] 971 | | ...                       a,
[INFO] [stdout] 972 | | ...                       b,
[INFO] [stdout] 973 | | ...                       runner.explain_equivalence(&start, &end).get_flat_string()
[INFO] [stdout] 974 | | ...                   );
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3b27faa484be865090871c7e8a2e8003dacee207531306f8aaef97c4171978c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b27faa484be865090871c7e8a2e8003dacee207531306f8aaef97c4171978c8", kill_on_drop: false }`
[INFO] [stdout] 3b27faa484be865090871c7e8a2e8003dacee207531306f8aaef97c4171978c8