[INFO] cloning repository https://github.com/edmugabi/flat-narrow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edmugabi/flat-narrow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedmugabi%2Fflat-narrow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedmugabi%2Fflat-narrow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acdf32b7a18e194c479f98e2607b2a63b271a540
[INFO] testing edmugabi/flat-narrow against 1.94.0 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedmugabi%2Fflat-narrow" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/edmugabi/flat-narrow
[INFO] finished tweaking git repo https://github.com/edmugabi/flat-narrow
[INFO] tweaked toml for git repo https://github.com/edmugabi/flat-narrow written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/edmugabi/flat-narrow on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/edmugabi/flat-narrow 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" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded disjoint-sets v0.4.2
[INFO] [stderr]   Downloaded bitvec v0.19.6
[INFO] [stderr]   Downloaded nom v6.2.1
[INFO] [stderr]   Downloaded syn v1.0.90
[INFO] [stderr]   Downloaded regex v1.4.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d9da8d04c1436cb04fb0c7adb6111663622fd5c2b14b75646cfdc8b23a15d0b
[INFO] running `Command { std: "docker" "start" "-a" "1d9da8d04c1436cb04fb0c7adb6111663622fd5c2b14b75646cfdc8b23a15d0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d9da8d04c1436cb04fb0c7adb6111663622fd5c2b14b75646cfdc8b23a15d0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d9da8d04c1436cb04fb0c7adb6111663622fd5c2b14b75646cfdc8b23a15d0b", kill_on_drop: false }`
[INFO] [stdout] 1d9da8d04c1436cb04fb0c7adb6111663622fd5c2b14b75646cfdc8b23a15d0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5de1483b461679d64a2ce7bfd5cb76516a072d1d2d3c48aa0dd00779d6a7258f
[INFO] running `Command { std: "docker" "start" "-a" "5de1483b461679d64a2ce7bfd5cb76516a072d1d2d3c48aa0dd00779d6a7258f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling bitvec v0.19.6
[INFO] [stderr]    Compiling disjoint-sets v0.4.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling limi-prolog-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::once`
[INFO] [stdout]  --> src/flat_narrow/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::once;
[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 definition: `tvar`
[INFO] [stdout]   --> src/flat_narrow/term.rs:52:14
[INFO] [stdout]    |
[INFO] [stdout] 52 | macro_rules! tvar {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Symbol::*`
[INFO] [stdout]    --> src/flat_narrow/term.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         use Symbol::*;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::term::Symbol`
[INFO] [stdout]  --> src/flat_narrow/goal.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::term::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/flat_narrow/env.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{BTreeMap, HashSet};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/flat_narrow/cpoint.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log::{debug, info};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::term::Term`
[INFO] [stdout]  --> src/flat_narrow/cpoint.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::term::Term;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `is_alphanumeric`
[INFO] [stdout]  --> src/flat_narrow/parser/mod.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use nom::character::{is_alphanumeric};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alpha1`
[INFO] [stdout]  --> src/flat_narrow/parser/mod.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nom::character::complete::{alpha1, multispace0, satisfy};
[INFO] [stdout]   |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alphanumeric0` and `alphanumeric1`
[INFO] [stdout]  --> src/flat_narrow/parser/mod.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nom::character::complete::{alphanumeric0, alphanumeric1, space0, space1};
[INFO] [stdout]   |                                ^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `many_m_n`
[INFO] [stdout]  --> src/flat_narrow/parser/mod.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nom::multi::{many0, many1, many_m_n, separated_list0, separated_list1};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `separated_pair`
[INFO] [stdout]   --> src/flat_narrow/parser/mod.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nom::sequence::{tuple, preceded, terminated, separated_pair};
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> src/flat_narrow/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeSet`
[INFO] [stdout]   --> src/flat_narrow/mod.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | use std::collections::BTreeSet;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json::ProgramItem`
[INFO] [stdout]   --> src/flat_narrow/mod.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | use json::ProgramItem;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` attribute cannot be used on use statements
[INFO] [stdout]  --> src/flat_narrow/env.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = help: `#[macro_use]` can be applied to crates, extern crates, and modules
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `symbols`
[INFO] [stdout]    --> src/flat_narrow/term.rs:119:22
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn subst_symbols(symbols: &mut [Symbol], env: &Env) {
[INFO] [stdout]     |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_symbols`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/flat_narrow/term.rs:119:46
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn subst_symbols(symbols: &mut [Symbol], env: &Env) {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/flat_narrow/term.rs:159:29
[INFO] [stdout]     |
[INFO] [stdout] 159 |                         let t =  sym1.symbols.iter().cloned();
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val2`
[INFO] [stdout]    --> src/flat_narrow/env.rs:146:39
[INFO] [stdout]     |
[INFO] [stdout] 146 |         w1.union_with(&mut w2, |val1, val2| val1);
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_val2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]    --> src/flat_narrow/env.rs:149:36
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn insert_var_const(&mut self, var: String, cnst: String) {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cnst`
[INFO] [stdout]    --> src/flat_narrow/env.rs:149:49
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn insert_var_const(&mut self, var: String, cnst: String) {
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cnst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/flat_narrow/cpoint.rs:240:20
[INFO] [stdout]     |
[INFO] [stdout] 240 |             .map( |mut cp: CPoint<'_>| cp.narrow())
[INFO] [stdout]     |                    ----^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eq`
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:204:13
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let eq = Term { symbols: vec![Symbol::Const(eq.into())] };
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Pos` is never used
[INFO] [stdout]   --> src/flat_narrow/mod.rs:72:6
[INFO] [stdout]    |
[INFO] [stdout] 72 | enum Pos {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `index` and `alt_index` are never used
[INFO] [stdout]   --> src/flat_narrow/mod.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | impl Pos {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] 78 |     fn index(&self) -> usize {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn alt_index(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `subst_symbols` is never used
[INFO] [stdout]    --> src/flat_narrow/term.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl Term {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 118 |
[INFO] [stdout] 119 |     fn subst_symbols(symbols: &mut [Symbol], env: &Env) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Found` is never constructed
[INFO] [stdout]   --> src/flat_narrow/env.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Found(String);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Variable` is never used
[INFO] [stdout]    --> src/flat_narrow/env.rs:133:6
[INFO] [stdout]     |
[INFO] [stdout] 133 | type Variable = disjoint_sets::UnionFindNode<Option<String>>;
[INFO] [stdout]     |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sub` is never constructed
[INFO] [stdout]    --> src/flat_narrow/env.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | struct Sub {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert_var_var` and `insert_var_const` are never used
[INFO] [stdout]    --> src/flat_narrow/env.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 138 | impl Sub {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] 139 |     fn insert_var_var(&mut self, v1: String, v2: String) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     fn insert_var_const(&mut self, var: String, cnst: String) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FACTORIAL` is never used
[INFO] [stdout]    --> src/flat_narrow/cpoint.rs:272:7
[INFO] [stdout]     |
[INFO] [stdout] 272 | const FACTORIAL: &str = 
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_top` is never used
[INFO] [stdout]    --> src/flat_narrow/cpoint.rs:282:4
[INFO] [stdout]     |
[INFO] [stdout] 282 | fn parse_top(rules: &str, goal_str: &str) -> (Vec<Clause>, Goal) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RESERVED_ESC` is never used
[INFO] [stdout]   --> src/flat_narrow/parser/mod.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 | const RESERVED_ESC: [&str; 3] = ["\t", "\r", "\n"];
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pequation` is never used
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:247:4
[INFO] [stdout]     |
[INFO] [stdout] 247 | fn pequation(input: &str) -> IResult<&str, [Term;3]>
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pquery` is never used
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:260:4
[INFO] [stdout]     |
[INFO] [stdout] 260 | fn pquery(input: &str) -> IResult<&str, Term> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pprogram` is never used
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:282:4
[INFO] [stdout]     |
[INFO] [stdout] 282 | fn pprogram(input: &str) -> IResult<&str, Vec<[Term;3]>> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pcond_program` is never used
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:295:8
[INFO] [stdout]     |
[INFO] [stdout] 295 | pub fn pcond_program(input: &str) -> IResult<&str, Vec<Clause>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `QUOTED_CHAR_NO_ESCAPE` should have a snake case name
[INFO] [stdout]   --> src/flat_narrow/parser/mod.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn QUOTED_CHAR_NO_ESCAPE() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `quoted_char_no_escape`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `TRUE` should have a snake case name
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:209:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let TRUE = Term::from(Symbol::Const("true".into()));
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: rename the identifier or convert it to a snake case raw identifier
[INFO] [stdout]     |
[INFO] [stdout] 209 -         let TRUE = Term::from(Symbol::Const("true".into()));
[INFO] [stdout] 209 +         let r#true = Term::from(Symbol::Const("true".into()));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `TRUE` should have a snake case name
[INFO] [stdout]    --> src/flat_narrow/parser/mod.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |         let TRUE = Term::from(Symbol::Const("true".into()));
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: rename the identifier or convert it to a snake case raw identifier
[INFO] [stdout]     |
[INFO] [stdout] 238 -         let TRUE = Term::from(Symbol::Const("true".into()));
[INFO] [stdout] 238 +         let r#true = Term::from(Symbol::Const("true".into()));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.56s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "5de1483b461679d64a2ce7bfd5cb76516a072d1d2d3c48aa0dd00779d6a7258f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5de1483b461679d64a2ce7bfd5cb76516a072d1d2d3c48aa0dd00779d6a7258f", kill_on_drop: false }`
[INFO] [stdout] 5de1483b461679d64a2ce7bfd5cb76516a072d1d2d3c48aa0dd00779d6a7258f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80dd3b8f531df3fda4409fe80250a56fb132fed7aa0b438a46c87c7f594fd7a1
[INFO] running `Command { std: "docker" "start" "-a" "80dd3b8f531df3fda4409fe80250a56fb132fed7aa0b438a46c87c7f594fd7a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling limi-prolog-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.98s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "80dd3b8f531df3fda4409fe80250a56fb132fed7aa0b438a46c87c7f594fd7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80dd3b8f531df3fda4409fe80250a56fb132fed7aa0b438a46c87c7f594fd7a1", kill_on_drop: false }`
[INFO] [stdout] 80dd3b8f531df3fda4409fe80250a56fb132fed7aa0b438a46c87c7f594fd7a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 65a193998c82f17f2c9a1796e35cc8600e237d213db4334d18ace4eac06bc0fc
[INFO] running `Command { std: "docker" "start" "-a" "65a193998c82f17f2c9a1796e35cc8600e237d213db4334d18ace4eac06bc0fc", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.2.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/limi_prolog_impl-efe130002ec619fd)
[INFO] [stdout] 
[INFO] [stdout] running 33 tests
[INFO] [stdout] test flat_narrow::env::tests::compose_test ... ok
[INFO] [stdout] test flat_narrow::env::tests::env_test ... ok
[INFO] [stdout] test flat_narrow::json::test_json::json_test ... ok
[INFO] [stdout] test flat_narrow::parser::string_tests::test_pstring ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::consts_test ... ok
[INFO] [stdout] test find_subterm::tests::find_subterm_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::p1cond_test ... ok
[INFO] [stdout] test flat_narrow::cpoint::factorial_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::eqn_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::pprogram_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::plist_pattern_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::var_test ... ok
[INFO] [stdout] test flat_narrow::pattern::index_tests ... ok
[INFO] [stdout] test flat_narrow::pattern::patt_term_unify_test ... ok
[INFO] [stdout] test flat_narrow::term::tests::rename_test ... ok
[INFO] [stdout] test flat_narrow::term::tests::term_test ... ok
[INFO] [stdout] test flat_narrow::parser::test_parser::p2cond_test ... ok
[INFO] [stdout] test flat_narrow::term::tests::symbol_tests ... ok
[INFO] [stdout] test flat_narrow::clause::rename_test ... ok
[INFO] [stdout] test flat_narrow::term::tests::unify_lists_test ... ok
[INFO] [stdout] test parser::tests::pconds_test ... ok
[INFO] [stdout] test parser::tests::pdefinite_clause_test ... ok
[INFO] [stdout] test parser::tests::pdefinite_clause_test1 ... ok
[INFO] [stdout] test parser::tests::pterm_test1 ... ok
[INFO] [stdout] test parser::tests::puser_input_test ... ok
[INFO] [stdout] test flat_narrow::cpoint::pcond_prog_test ... ok
[INFO] [stdout] test solve1::tests::narrow_test ... ok
[INFO] [stdout] test term::tests::unify1 ... ok
[INFO] [stdout] test term::tests::unify_test1 ... ok
[INFO] [stdout] test tests::sld_test2 ... ok
[INFO] [stdout] test tests::test_sld ... ok
[INFO] [stdout] test flat_narrow::cpoint::program_tests ... ok
[INFO] [stdout] test solve::tests::solve_test1 ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- solve::tests::solve_test1 stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'solve::tests::solve_test1' (44) panicked at src/solve.rs:82:49:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Error(VerboseError { errors: [("> f(X) = a\n\n=> g(a) = a", Nom(Eof))] })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f86331d4322 - std::backtrace_rs::backtrace::libunwind::trace::hff358a60abf734fc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5f86331d4322 - std::backtrace_rs::backtrace::trace_unsynchronized::h3b121f916dd95ec6
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5f86331d4322 - std::sys::backtrace::_print_fmt::hde0a62ded68798e9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5f86331d4322 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h93773fc827e3113d
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5f86331e45da - core::fmt::rt::Argument::fmt::h01eff69902dad97f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5f86331e45da - core::fmt::write::hed7b5c73d82ecb7c
[INFO] [stdout]    6:     0x5f86331a2f56 - std::io::default_write_fmt::h2f696ff5b8bbaa4b
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5f86331a2f56 - std::io::Write::write_fmt::h5e66814db8a9cfce
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5f86331b3759 - std::sys::backtrace::BacktraceLock::print::h8b1d6fcc5a56d1a3
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5f86331b3759 - std::panicking::default_hook::{{closure}}::h2be84df4f189ae36
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5f86331b35f1 - std::panicking::default_hook::hf0ea8939246f43a9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5f863317527e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h02d35e3888986252
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5f863317527e - test::test_main_with_exit_callback::{{closure}}::h939640a27d647173
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5f86331b39d2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hc9df09ff391af3e7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5f86331b39d2 - std::panicking::panic_with_hook::hb4bd9ac1123582a0
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5f86331b3818 - std::panicking::panic_handler::{{closure}}::hde00dd15f5637fe2
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5f86331aed49 - std::sys::backtrace::__rust_end_short_backtrace::hb72197fa777c1785
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5f8633197d8d - __rustc[4425a7e20b4c8619]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5f86331ec19c - core::panicking::panic_fmt::ha59b517dd231f4da
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5f86331eb6d2 - core::result::unwrap_failed::hf2d1f30a3ac850fc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x5f8633122dc5 - core::result::Result<T,E>::unwrap::hc0cdbecf7fd5acca
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x5f8633122dc5 - limi_prolog_impl::solve::tests::solve_test1::ha9a270c88705645a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/solve.rs:82:49
[INFO] [stdout]   22:     0x5f8633123397 - limi_prolog_impl::solve::tests::solve_test1::{{closure}}::hcba5facfc89660b4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/solve.rs:81:21
[INFO] [stdout]   23:     0x5f863309dd36 - core::ops::function::FnOnce::call_once::haccc54f58408be65
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5f863317503b - core::ops::function::FnOnce::call_once::hddb3cd395c36bfbb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5f863317503b - test::__rust_begin_short_backtrace::h0b6a7601d9750bfa
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x5f8633188a4a - test::run_test_in_process::{{closure}}::h444209903f00b347
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5f8633188a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfb3ba8f46e537649
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x5f8633188a4a - std::panicking::catch_unwind::do_call::h1672a45911fcf9dc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x5f8633188a4a - std::panicking::catch_unwind::h0fadaee22787a6dd
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x5f8633188a4a - std::panic::catch_unwind::hc47ad190f2c8e188
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5f8633188a4a - test::run_test_in_process::hcd7faaf934f29999
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5f8633188a4a - test::run_test::{{closure}}::hddc4550da4871867
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5f8633162ea4 - test::run_test::{{closure}}::h98ae26689f13ed94
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5f8633162ea4 - std::sys::backtrace::__rust_begin_short_backtrace::h3ec4d1f21ad44588
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5f8633166842 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd8bf2c73d479939f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5f8633166842 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h3b4248f358af2491
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5f8633166842 - std::panicking::catch_unwind::do_call::hda10a64f4b8daebe
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5f8633166842 - std::panicking::catch_unwind::h659e5ee8336ec8c7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5f8633166842 - std::panic::catch_unwind::h9d4d66a538912c18
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5f8633166842 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h7557906bb51d79f1
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5f8633166842 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9e460d1d7fc83d35
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5f86331a9fdf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h61282da819d64ea9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x5f86331a9fdf - std::sys::thread::unix::Thread::new::thread_start::h982f9ea829d1b5fb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x75e0ff616aa4 - <unknown>
[INFO] [stdout]   45:     0x75e0ff6a3a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     solve::tests::solve_test1
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 32 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin limi-prolog-impl`
[INFO] running `Command { std: "docker" "inspect" "65a193998c82f17f2c9a1796e35cc8600e237d213db4334d18ace4eac06bc0fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65a193998c82f17f2c9a1796e35cc8600e237d213db4334d18ace4eac06bc0fc", kill_on_drop: false }`
[INFO] [stdout] 65a193998c82f17f2c9a1796e35cc8600e237d213db4334d18ace4eac06bc0fc
