[INFO] cloning repository https://github.com/neverRare/relambda
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neverRare/relambda" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Frelambda", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Frelambda'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf09d89c38b629dccbd4b0ceb5d57f03cb5bf210
[INFO] testing neverRare/relambda against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FneverRare%2Frelambda" "/workspace/builds/worker-60/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-60/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/neverRare/relambda on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/neverRare/relambda
[INFO] finished tweaking git repo https://github.com/neverRare/relambda
[INFO] tweaked toml for git repo https://github.com/neverRare/relambda written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] crate git repo https://github.com/neverRare/relambda already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ce648079012d026a4d9c1227ef40078a0bc38bbd8977a387d11cd0b8af447fa
[INFO] running `Command { std: "docker" "start" "-a" "6ce648079012d026a4d9c1227ef40078a0bc38bbd8977a387d11cd0b8af447fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ce648079012d026a4d9c1227ef40078a0bc38bbd8977a387d11cd0b8af447fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce648079012d026a4d9c1227ef40078a0bc38bbd8977a387d11cd0b8af447fa", kill_on_drop: false }`
[INFO] [stdout] 6ce648079012d026a4d9c1227ef40078a0bc38bbd8977a387d11cd0b8af447fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c94f65292eb31f04b33b12eeaa5141dc4a7e0c46b64be3d6f9044c136a37ed8
[INFO] running `Command { std: "docker" "start" "-a" "2c94f65292eb31f04b33b12eeaa5141dc4a7e0c46b64be3d6f9044c136a37ed8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling relambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]    --> src/parser_combinator.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Undef`
[INFO] [stdout]  --> src/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Undef,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/ast.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Var(usize),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bind`
[INFO] [stdout]  --> src/ast.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bind(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fun`
[INFO] [stdout]  --> src/ast.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Fun(Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `App`
[INFO] [stdout]  --> src/ast.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     App(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]  --> src/ast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Unit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pair`
[INFO] [stdout]  --> src/ast.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Pair(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/ast.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Left(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/ast.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Right(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchPair`
[INFO] [stdout]   --> src/ast.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     MatchPair(Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchEither`
[INFO] [stdout]   --> src/ast.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     MatchEither(Box<Ast>, Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional_ast`
[INFO] [stdout]   --> src/parser.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn optional_ast<I, P>(parser: P) -> impl Parser<I, Output = Ast>
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insignificant`
[INFO] [stdout]   --> src/parser.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn insignificant(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lex`
[INFO] [stdout]   --> src/parser.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn lex<I, P>(parser: P) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var`
[INFO] [stdout]   --> src/parser.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn var(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<usize> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unit`
[INFO] [stdout]   --> src/parser.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn unit(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `either`
[INFO] [stdout]   --> src/parser.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn either(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fun`
[INFO] [stdout]   --> src/parser.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fun(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `group`
[INFO] [stdout]   --> src/parser.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn group(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prefix`
[INFO] [stdout]   --> src/parser.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn prefix(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `app_or_up`
[INFO] [stdout]   --> src/parser.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn app_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_or_up`
[INFO] [stdout]   --> src/parser.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_either_or_up`
[INFO] [stdout]   --> src/parser.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn match_either_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_pair_or_up`
[INFO] [stdout]    --> src/parser.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn match_pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bind_or_up`
[INFO] [stdout]    --> src/parser.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn bind_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_ast`
[INFO] [stdout]    --> src/parser.rs:148:15
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub(crate) fn parse_ast(iter: impl IntoIterator<Item = char>) -> Option<Ast> {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `satisfy`
[INFO] [stdout]   --> src/parser_combinator.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn satisfy<I, F>(f: F) -> impl Parser<I, Output = char>
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `char_parser`
[INFO] [stdout]   --> src/parser_combinator.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn char_parser<I: Iterator<Item = char>>(ch: char) -> impl Parser<I, Output = ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence`
[INFO] [stdout]   --> src/parser_combinator.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn sequence<I, L, R>(left: L, right: R) -> impl Parser<I, Output = (L::Output, R::Output)>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `choice`
[INFO] [stdout]    --> src/parser_combinator.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn choice<I, L, R, O>(left: L, right: R) -> impl Parser<I, Output = O>
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `many`
[INFO] [stdout]    --> src/parser_combinator.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | pub fn many<I, P, C>(parser: P) -> impl Parser<I, Output = C>
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `skip_many`
[INFO] [stdout]    --> src/parser_combinator.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn skip_many<I, P>(parser: P) -> impl Parser<I, Output = ()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional`
[INFO] [stdout]    --> src/parser_combinator.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub fn optional<I, P>(parser: P) -> impl Parser<I, Output = Option<P::Output>>
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `chain_l`
[INFO] [stdout]    --> src/parser_combinator.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub fn chain_l<I, P, Op>(parser: P, op: Op) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eof`
[INFO] [stdout]    --> src/parser_combinator.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub fn eof(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `none`
[INFO] [stdout]    --> src/parser_combinator.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "2c94f65292eb31f04b33b12eeaa5141dc4a7e0c46b64be3d6f9044c136a37ed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c94f65292eb31f04b33b12eeaa5141dc4a7e0c46b64be3d6f9044c136a37ed8", kill_on_drop: false }`
[INFO] [stdout] 2c94f65292eb31f04b33b12eeaa5141dc4a7e0c46b64be3d6f9044c136a37ed8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fc87bc3f2ee424ec0dafe397617c37420fb02c7843c0fa3d675f65eb241397e
[INFO] running `Command { std: "docker" "start" "-a" "8fc87bc3f2ee424ec0dafe397617c37420fb02c7843c0fa3d675f65eb241397e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]    --> src/parser_combinator.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Undef`
[INFO] [stdout]  --> src/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Undef,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/ast.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Var(usize),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bind`
[INFO] [stdout]  --> src/ast.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bind(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fun`
[INFO] [stdout]  --> src/ast.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Fun(Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `App`
[INFO] [stdout]  --> src/ast.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     App(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]  --> src/ast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Unit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pair`
[INFO] [stdout]  --> src/ast.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Pair(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/ast.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Left(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/ast.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Right(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchPair`
[INFO] [stdout]   --> src/ast.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     MatchPair(Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchEither`
[INFO] [stdout]   --> src/ast.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     MatchEither(Box<Ast>, Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional_ast`
[INFO] [stdout]   --> src/parser.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn optional_ast<I, P>(parser: P) -> impl Parser<I, Output = Ast>
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insignificant`
[INFO] [stdout]   --> src/parser.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn insignificant(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lex`
[INFO] [stdout]   --> src/parser.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn lex<I, P>(parser: P) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var`
[INFO] [stdout]   --> src/parser.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn var(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<usize> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling relambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `unit`
[INFO] [stdout]   --> src/parser.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn unit(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `either`
[INFO] [stdout]   --> src/parser.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn either(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fun`
[INFO] [stdout]   --> src/parser.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fun(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `group`
[INFO] [stdout]   --> src/parser.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn group(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prefix`
[INFO] [stdout]   --> src/parser.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn prefix(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `app_or_up`
[INFO] [stdout]   --> src/parser.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn app_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_or_up`
[INFO] [stdout]   --> src/parser.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_either_or_up`
[INFO] [stdout]   --> src/parser.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn match_either_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_pair_or_up`
[INFO] [stdout]    --> src/parser.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn match_pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bind_or_up`
[INFO] [stdout]    --> src/parser.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn bind_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_ast`
[INFO] [stdout]    --> src/parser.rs:148:15
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub(crate) fn parse_ast(iter: impl IntoIterator<Item = char>) -> Option<Ast> {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `satisfy`
[INFO] [stdout]   --> src/parser_combinator.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn satisfy<I, F>(f: F) -> impl Parser<I, Output = char>
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `char_parser`
[INFO] [stdout]   --> src/parser_combinator.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn char_parser<I: Iterator<Item = char>>(ch: char) -> impl Parser<I, Output = ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence`
[INFO] [stdout]   --> src/parser_combinator.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn sequence<I, L, R>(left: L, right: R) -> impl Parser<I, Output = (L::Output, R::Output)>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `choice`
[INFO] [stdout]    --> src/parser_combinator.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn choice<I, L, R, O>(left: L, right: R) -> impl Parser<I, Output = O>
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `many`
[INFO] [stdout]    --> src/parser_combinator.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | pub fn many<I, P, C>(parser: P) -> impl Parser<I, Output = C>
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `skip_many`
[INFO] [stdout]    --> src/parser_combinator.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn skip_many<I, P>(parser: P) -> impl Parser<I, Output = ()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional`
[INFO] [stdout]    --> src/parser_combinator.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub fn optional<I, P>(parser: P) -> impl Parser<I, Output = Option<P::Output>>
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `chain_l`
[INFO] [stdout]    --> src/parser_combinator.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub fn chain_l<I, P, Op>(parser: P, op: Op) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eof`
[INFO] [stdout]    --> src/parser_combinator.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub fn eof(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `none`
[INFO] [stdout]    --> src/parser_combinator.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]    --> src/parser_combinator.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Undef`
[INFO] [stdout]  --> src/ast.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Undef,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/ast.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Var(usize),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bind`
[INFO] [stdout]  --> src/ast.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bind(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fun`
[INFO] [stdout]  --> src/ast.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Fun(Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `App`
[INFO] [stdout]  --> src/ast.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     App(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unit`
[INFO] [stdout]  --> src/ast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Unit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Pair`
[INFO] [stdout]  --> src/ast.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Pair(Box<Ast>, Box<Ast>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/ast.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Left(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/ast.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Right(Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchPair`
[INFO] [stdout]   --> src/ast.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     MatchPair(Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MatchEither`
[INFO] [stdout]   --> src/ast.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     MatchEither(Box<Ast>, Box<Ast>, Box<Ast>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional_ast`
[INFO] [stdout]   --> src/parser.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn optional_ast<I, P>(parser: P) -> impl Parser<I, Output = Ast>
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insignificant`
[INFO] [stdout]   --> src/parser.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn insignificant(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lex`
[INFO] [stdout]   --> src/parser.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn lex<I, P>(parser: P) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var`
[INFO] [stdout]   --> src/parser.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn var(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<usize> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unit`
[INFO] [stdout]   --> src/parser.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn unit(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `either`
[INFO] [stdout]   --> src/parser.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn either(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fun`
[INFO] [stdout]   --> src/parser.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fun(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `group`
[INFO] [stdout]   --> src/parser.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn group(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prefix`
[INFO] [stdout]   --> src/parser.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn prefix(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `app_or_up`
[INFO] [stdout]   --> src/parser.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn app_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pair_or_up`
[INFO] [stdout]   --> src/parser.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_either_or_up`
[INFO] [stdout]   --> src/parser.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn match_either_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_pair_or_up`
[INFO] [stdout]    --> src/parser.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn match_pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bind_or_up`
[INFO] [stdout]    --> src/parser.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn bind_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_ast`
[INFO] [stdout]    --> src/parser.rs:148:15
[INFO] [stdout]     |
[INFO] [stdout] 148 | pub(crate) fn parse_ast(iter: impl IntoIterator<Item = char>) -> Option<Ast> {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `satisfy`
[INFO] [stdout]   --> src/parser_combinator.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn satisfy<I, F>(f: F) -> impl Parser<I, Output = char>
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `char_parser`
[INFO] [stdout]   --> src/parser_combinator.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn char_parser<I: Iterator<Item = char>>(ch: char) -> impl Parser<I, Output = ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence`
[INFO] [stdout]   --> src/parser_combinator.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn sequence<I, L, R>(left: L, right: R) -> impl Parser<I, Output = (L::Output, R::Output)>
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `choice`
[INFO] [stdout]    --> src/parser_combinator.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn choice<I, L, R, O>(left: L, right: R) -> impl Parser<I, Output = O>
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `many`
[INFO] [stdout]    --> src/parser_combinator.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | pub fn many<I, P, C>(parser: P) -> impl Parser<I, Output = C>
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `skip_many`
[INFO] [stdout]    --> src/parser_combinator.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn skip_many<I, P>(parser: P) -> impl Parser<I, Output = ()>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `optional`
[INFO] [stdout]    --> src/parser_combinator.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub fn optional<I, P>(parser: P) -> impl Parser<I, Output = Option<P::Output>>
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `chain_l`
[INFO] [stdout]    --> src/parser_combinator.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 | pub fn chain_l<I, P, Op>(parser: P, op: Op) -> impl Parser<I, Output = P::Output>
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eof`
[INFO] [stdout]    --> src/parser_combinator.rs:221:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub fn eof(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `none`
[INFO] [stdout]    --> src/parser_combinator.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "8fc87bc3f2ee424ec0dafe397617c37420fb02c7843c0fa3d675f65eb241397e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc87bc3f2ee424ec0dafe397617c37420fb02c7843c0fa3d675f65eb241397e", kill_on_drop: false }`
[INFO] [stdout] 8fc87bc3f2ee424ec0dafe397617c37420fb02c7843c0fa3d675f65eb241397e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a375a2b6bb853728c239bd0694e26c98b65672dbd37174567ee9fd327b1a0f62
[INFO] running `Command { std: "docker" "start" "-a" "a375a2b6bb853728c239bd0694e26c98b65672dbd37174567ee9fd327b1a0f62", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/parser_combinator.rs:231:13
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stdout] 
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Undef`
[INFO] [stderr]  --> src/ast.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Undef,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]  --> src/ast.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Var(usize),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bind`
[INFO] [stderr]  --> src/ast.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bind(Box<Ast>, Box<Ast>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fun`
[INFO] [stderr]  --> src/ast.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Fun(Box<Ast>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]  --> src/ast.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     App(Box<Ast>, Box<Ast>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unit`
[INFO] [stderr]  --> src/ast.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Unit,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pair`
[INFO] [stderr]  --> src/ast.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Pair(Box<Ast>, Box<Ast>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/ast.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     Left(Box<Ast>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/ast.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Right(Box<Ast>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MatchPair`
[INFO] [stderr]   --> src/ast.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     MatchPair(Box<Ast>, Box<Ast>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MatchEither`
[INFO] [stderr]   --> src/ast.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     MatchEither(Box<Ast>, Box<Ast>, Box<Ast>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `optional_ast`
[INFO] [stderr]   --> src/parser.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn optional_ast<I, P>(parser: P) -> impl Parser<I, Output = Ast>
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `insignificant`
[INFO] [stderr]   --> src/parser.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn insignificant(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lex`
[INFO] [stderr]   --> src/parser.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn lex<I, P>(parser: P) -> impl Parser<I, Output = P::Output>
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `var`
[INFO] [stderr]   --> src/parser.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn var(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<usize> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unit`
[INFO] [stderr]   --> src/parser.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn unit(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `either`
[INFO] [stderr]   --> src/parser.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn either(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fun`
[INFO] [stderr]   --> src/parser.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn fun(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `group`
[INFO] [stderr]   --> src/parser.rs:65:4
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn group(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prefix`
[INFO] [stderr]   --> src/parser.rs:73:4
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn prefix(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `app_or_up`
[INFO] [stderr]   --> src/parser.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn app_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pair_or_up`
[INFO] [stderr]   --> src/parser.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_either_or_up`
[INFO] [stderr]   --> src/parser.rs:99:4
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn match_either_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_pair_or_up`
[INFO] [stderr]    --> src/parser.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn match_pair_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bind_or_up`
[INFO] [stderr]    --> src/parser.rs:136:4
[INFO] [stderr]     |
[INFO] [stderr] 136 | fn bind_or_up(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<Ast> {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_ast`
[INFO] [stderr]    --> src/parser.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 | pub(crate) fn parse_ast(iter: impl IntoIterator<Item = char>) -> Option<Ast> {
[INFO] [stderr]     |               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `satisfy`
[INFO] [stderr]   --> src/parser_combinator.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub fn satisfy<I, F>(f: F) -> impl Parser<I, Output = char>
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `char_parser`
[INFO] [stderr]   --> src/parser_combinator.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub fn char_parser<I: Iterator<Item = char>>(ch: char) -> impl Parser<I, Output = ()> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sequence`
[INFO] [stderr]   --> src/parser_combinator.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn sequence<I, L, R>(left: L, right: R) -> impl Parser<I, Output = (L::Output, R::Output)>
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `choice`
[INFO] [stderr]    --> src/parser_combinator.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 | pub fn choice<I, L, R, O>(left: L, right: R) -> impl Parser<I, Output = O>
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `many`
[INFO] [stderr]    --> src/parser_combinator.rs:122:8
[INFO] [stderr]     |
[INFO] [stderr] 122 | pub fn many<I, P, C>(parser: P) -> impl Parser<I, Output = C>
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `skip_many`
[INFO] [stderr]    --> src/parser_combinator.rs:147:8
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn skip_many<I, P>(parser: P) -> impl Parser<I, Output = ()>
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `optional`
[INFO] [stderr]    --> src/parser_combinator.rs:169:8
[INFO] [stderr]     |
[INFO] [stderr] 169 | pub fn optional<I, P>(parser: P) -> impl Parser<I, Output = Option<P::Output>>
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `chain_l`
[INFO] [stderr]    --> src/parser_combinator.rs:182:8
[INFO] [stderr]     |
[INFO] [stderr] 182 | pub fn chain_l<I, P, Op>(parser: P, op: Op) -> impl Parser<I, Output = P::Output>
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eof`
[INFO] [stderr]    --> src/parser_combinator.rs:221:8
[INFO] [stderr]     |
[INFO] [stderr] 221 | pub fn eof(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `none`
[INFO] [stderr]    --> src/parser_combinator.rs:231:8
[INFO] [stderr]     |
[INFO] [stderr] 231 | pub fn none(iter: &mut Peekable<impl Iterator<Item = char>>) -> ParseOutput<()> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `relambda` (lib) generated 37 warnings
[INFO] [stderr] warning: `relambda` (lib test) generated 37 warnings (37 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/relambda-21c4fb1d0019d402)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/relambda-611e3cf9f799f3b1)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests relambda
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a375a2b6bb853728c239bd0694e26c98b65672dbd37174567ee9fd327b1a0f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a375a2b6bb853728c239bd0694e26c98b65672dbd37174567ee9fd327b1a0f62", kill_on_drop: false }`
[INFO] [stdout] a375a2b6bb853728c239bd0694e26c98b65672dbd37174567ee9fd327b1a0f62