[INFO] cloning repository https://github.com/andyyu2004/logic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andyyu2004/logic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyyu2004%2Flogic", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd21f1b151665ad1fa886a3f011203d773eaf807
[INFO] fixing andyyu2004/logic against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandyyu2004%2Flogic" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/andyyu2004/logic
[INFO] finished tweaking git repo https://github.com/andyyu2004/logic
[INFO] tweaked toml for git repo https://github.com/andyyu2004/logic written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/andyyu2004/logic on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
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[INFO] crate git repo https://github.com/andyyu2004/logic 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:rw,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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
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[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" "3bad7d841896e9334931ab304ee2153475a4345ca16dcf0192e5a3c0149d6f43" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `self::__parse__Constraint::ConstraintParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:3847:9
[INFO] [stdout]      |
[INFO] [stdout] 3847 | pub use self::__parse__Constraint::ConstraintParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__DomainGoal::DomainGoalParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:5705:9
[INFO] [stdout]      |
[INFO] [stdout] 5705 | pub use self::__parse__DomainGoal::DomainGoalParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__ImplConstraint::ImplConstraintParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:9483:9
[INFO] [stdout]      |
[INFO] [stdout] 9483 | pub use self::__parse__ImplConstraint::ImplConstraintParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Implication::ImplicationParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:11462:9
[INFO] [stdout]       |
[INFO] [stdout] 11462 | pub use self::__parse__Implication::ImplicationParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Item::ItemParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:13451:9
[INFO] [stdout]       |
[INFO] [stdout] 13451 | pub use self::__parse__Item::ItemParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__TraitRef::TraitRefParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:17299:9
[INFO] [stdout]       |
[INFO] [stdout] 17299 | pub use self::__parse__TraitRef::TraitRefParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Var::VarParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:20896:9
[INFO] [stdout]       |
[INFO] [stdout] 20896 | pub use self::__parse__Var::VarParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Constraint::ConstraintParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:3847:9
[INFO] [stdout]      |
[INFO] [stdout] 3847 | pub use self::__parse__Constraint::ConstraintParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__DomainGoal::DomainGoalParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:5705:9
[INFO] [stdout]      |
[INFO] [stdout] 5705 | pub use self::__parse__DomainGoal::DomainGoalParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__ImplConstraint::ImplConstraintParser`
[INFO] [stdout]     --> logic-parse/src/parser.rs:9483:9
[INFO] [stdout]      |
[INFO] [stdout] 9483 | pub use self::__parse__ImplConstraint::ImplConstraintParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Implication::ImplicationParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:11462:9
[INFO] [stdout]       |
[INFO] [stdout] 11462 | pub use self::__parse__Implication::ImplicationParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Item::ItemParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:13451:9
[INFO] [stdout]       |
[INFO] [stdout] 13451 | pub use self::__parse__Item::ItemParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__TraitRef::TraitRefParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:17299:9
[INFO] [stdout]       |
[INFO] [stdout] 17299 | pub use self::__parse__TraitRef::TraitRefParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Var::VarParser`
[INFO] [stdout]      --> logic-parse/src/parser.rs:20896:9
[INFO] [stdout]       |
[INFO] [stdout] 20896 | pub use self::__parse__Var::VarParser;
[INFO] [stdout]       |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> logic-parse/src/ast.rs:67:19
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `constraint`
[INFO] [stdout]   --> logic-parse/src/ast.rs:69:31
[INFO] [stdout]    |
[INFO] [stdout] 69 |             DomainGoal::Holds(constraint) => todo!(),
[INFO] [stdout]    |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> logic-parse/src/ast.rs:67:19
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `constraint`
[INFO] [stdout]   --> logic-parse/src/ast.rs:69:31
[INFO] [stdout]    |
[INFO] [stdout] 69 |             DomainGoal::Holds(constraint) => todo!(),
[INFO] [stdout]    |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:2305:16
[INFO] [stdout]      |
[INFO] [stdout] 2304 |     impl ConstraintParser {
[INFO] [stdout]      |     --------------------- associated function in this implementation
[INFO] [stdout] 2305 |         pub fn new() -> ConstraintParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:4163:16
[INFO] [stdout]      |
[INFO] [stdout] 4162 |     impl DomainGoalParser {
[INFO] [stdout]      |     --------------------- associated function in this implementation
[INFO] [stdout] 4163 |         pub fn new() -> DomainGoalParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:7941:16
[INFO] [stdout]      |
[INFO] [stdout] 7940 |     impl ImplConstraintParser {
[INFO] [stdout]      |     ------------------------- associated function in this implementation
[INFO] [stdout] 7941 |         pub fn new() -> ImplConstraintParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:9920:16
[INFO] [stdout]      |
[INFO] [stdout] 9919 |     impl ImplicationParser {
[INFO] [stdout]      |     ---------------------- associated function in this implementation
[INFO] [stdout] 9920 |         pub fn new() -> ImplicationParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:11909:16
[INFO] [stdout]       |
[INFO] [stdout] 11908 |     impl ItemParser {
[INFO] [stdout]       |     --------------- associated function in this implementation
[INFO] [stdout] 11909 |         pub fn new() -> ItemParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:15757:16
[INFO] [stdout]       |
[INFO] [stdout] 15756 |     impl TraitRefParser {
[INFO] [stdout]       |     ------------------- associated function in this implementation
[INFO] [stdout] 15757 |         pub fn new() -> TraitRefParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:19354:16
[INFO] [stdout]       |
[INFO] [stdout] 19353 |     impl VarParser {
[INFO] [stdout]       |     -------------- associated function in this implementation
[INFO] [stdout] 19354 |         pub fn new() -> VarParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:2305:16
[INFO] [stdout]      |
[INFO] [stdout] 2304 |     impl ConstraintParser {
[INFO] [stdout]      |     --------------------- associated function in this implementation
[INFO] [stdout] 2305 |         pub fn new() -> ConstraintParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:4163:16
[INFO] [stdout]      |
[INFO] [stdout] 4162 |     impl DomainGoalParser {
[INFO] [stdout]      |     --------------------- associated function in this implementation
[INFO] [stdout] 4163 |         pub fn new() -> DomainGoalParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:7941:16
[INFO] [stdout]      |
[INFO] [stdout] 7940 |     impl ImplConstraintParser {
[INFO] [stdout]      |     ------------------------- associated function in this implementation
[INFO] [stdout] 7941 |         pub fn new() -> ImplConstraintParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> logic-parse/src/parser.rs:9920:16
[INFO] [stdout]      |
[INFO] [stdout] 9919 |     impl ImplicationParser {
[INFO] [stdout]      |     ---------------------- associated function in this implementation
[INFO] [stdout] 9920 |         pub fn new() -> ImplicationParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:11909:16
[INFO] [stdout]       |
[INFO] [stdout] 11908 |     impl ItemParser {
[INFO] [stdout]       |     --------------- associated function in this implementation
[INFO] [stdout] 11909 |         pub fn new() -> ItemParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:15757:16
[INFO] [stdout]       |
[INFO] [stdout] 15756 |     impl TraitRefParser {
[INFO] [stdout]       |     ------------------- associated function in this implementation
[INFO] [stdout] 15757 |         pub fn new() -> TraitRefParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]      --> logic-parse/src/parser.rs:19354:16
[INFO] [stdout]       |
[INFO] [stdout] 19353 |     impl VarParser {
[INFO] [stdout]       |     -------------- associated function in this implementation
[INFO] [stdout] 19354 |         pub fn new() -> VarParser {
[INFO] [stdout]       |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking logic-ir v0.1.0 (/opt/rustwide/workdir/logic-ir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | newtype_index!(InferIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | newtype_index!(InferIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | newtype_index!(DebruijnIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | newtype_index!(DebruijnIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DebugCtxt` and `Interner`
[INFO] [stdout]  --> logic-ir/src/tls.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{DebugCtxt, Interner, LogicInterner};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debruijn`
[INFO] [stdout]   --> logic-ir/src/subst.rs:20:38
[INFO] [stdout]    |
[INFO] [stdout] 20 |             TyKind::Bound(BoundVar { debruijn, index }) =>
[INFO] [stdout]    |                                      ^^^^^^^^ help: try ignoring the field: `debruijn: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> logic-ir/src/lib.rs:472:19
[INFO] [stdout]     |
[INFO] [stdout] 472 |     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking logic-engine v0.1.0 (/opt/rustwide/workdir/logic-engine)
[INFO] [stdout] warning: unused import: `logic_ir::*`
[INFO] [stdout]  --> logic-engine/src/substs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use logic_ir::*;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> logic-engine/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |             (TyKind::Bound(x), TyKind::Bound(y)) => todo!(),
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:21:46
[INFO] [stdout]    |
[INFO] [stdout] 21 |             (TyKind::Bound(x), TyKind::Bound(y)) => todo!(),
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         a: &logic_ir::Binders<T>,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         b: &logic_ir::Binders<T>,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> logic-engine/src/unify.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn zip_binders<T>(&mut self, a: &Binders<T>, b: &Binders<T>) -> LogicResult<()>
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> logic-engine/src/unify.rs:64:50
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn zip_binders<T>(&mut self, a: &Binders<T>, b: &Binders<T>) -> LogicResult<()>
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vars` is never read
[INFO] [stdout]   --> logic-engine/src/infer.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct InferenceTable<I: Interner> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 40 |     vars: Vec<InferVar<I>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InferenceTable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubstsFolder` is never constructed
[INFO] [stdout]  --> logic-engine/src/substs.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct SubstsFolder<I> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking logic-driver v0.1.0 (/opt/rustwide/workdir/logic-driver)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> logic-driver/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IRDatabase` is never used
[INFO] [stdout]   --> logic-driver/src/lib.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait IRDatabase<I> {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> logic-driver/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IRDatabase` is never used
[INFO] [stdout]   --> logic-driver/src/lib.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait IRDatabase<I> {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking logic v0.1.0 (/opt/rustwide/workdir/logic)
[INFO] [stdout] warning: unused import: `rustyline::error::ReadlineError`
[INFO] [stdout]  --> logic/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::error::ReadlineError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::Editor`
[INFO] [stdout]  --> logic/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustyline::Editor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> logic/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opts`
[INFO] [stdout]   --> logic/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let opts = Opts::parse();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> logic/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Opts {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 11 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opts` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::error::ReadlineError`
[INFO] [stdout]  --> logic/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rustyline::error::ReadlineError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::Editor`
[INFO] [stdout]  --> logic/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustyline::Editor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> logic/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opts`
[INFO] [stdout]   --> logic/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let opts = Opts::parse();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> logic/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Opts {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 11 |     path: Option<String>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opts` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `logic_ir::*`
[INFO] [stdout]  --> logic-engine/src/substs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use logic_ir::*;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> logic-engine/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | newtype_index!(InferIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:119:1
[INFO] [stdout]     |
[INFO] [stdout] 119 | newtype_index!(InferIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | newtype_index!(DebruijnIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> logic-ir/src/lib.rs:120:1
[INFO] [stdout]     |
[INFO] [stdout] 120 | newtype_index!(DebruijnIdx);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]     = help: try referring to `$crate::newtype_index` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: this warning originates in the macro `$crate::newtype_index` which comes from the expansion of the macro `newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DebugCtxt` and `Interner`
[INFO] [stdout]  --> logic-ir/src/tls.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{DebugCtxt, Interner, LogicInterner};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |             (TyKind::Bound(x), TyKind::Bound(y)) => todo!(),
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:21:46
[INFO] [stdout]    |
[INFO] [stdout] 21 |             (TyKind::Bound(x), TyKind::Bound(y)) => todo!(),
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         a: &logic_ir::Binders<T>,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> logic-engine/src/can_unify.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         b: &logic_ir::Binders<T>,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> logic-engine/src/unify.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn zip_binders<T>(&mut self, a: &Binders<T>, b: &Binders<T>) -> LogicResult<()>
[INFO] [stdout]    |                                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> logic-engine/src/unify.rs:64:50
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn zip_binders<T>(&mut self, a: &Binders<T>, b: &Binders<T>) -> LogicResult<()>
[INFO] [stdout]    |                                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vars` is never read
[INFO] [stdout]   --> logic-engine/src/infer.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct InferenceTable<I: Interner> {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 40 |     vars: Vec<InferVar<I>>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `InferenceTable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubstsFolder` is never constructed
[INFO] [stdout]  --> logic-engine/src/substs.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct SubstsFolder<I> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debruijn`
[INFO] [stdout]   --> logic-ir/src/subst.rs:20:38
[INFO] [stdout]    |
[INFO] [stdout] 20 |             TyKind::Bound(BoundVar { debruijn, index }) =>
[INFO] [stdout]    |                                      ^^^^^^^^ help: try ignoring the field: `debruijn: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> logic-ir/src/lib.rs:472:19
[INFO] [stdout]     |
[INFO] [stdout] 472 |     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.6
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr] crater-edition-check: all finished
[INFO] running `Command { std: "docker" "inspect" "3bad7d841896e9334931ab304ee2153475a4345ca16dcf0192e5a3c0149d6f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bad7d841896e9334931ab304ee2153475a4345ca16dcf0192e5a3c0149d6f43", kill_on_drop: false }`
[INFO] [stdout] 3bad7d841896e9334931ab304ee2153475a4345ca16dcf0192e5a3c0149d6f43
