[INFO] cloning repository https://github.com/ast-ral/lucent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ast-ral/lucent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fast-ral%2Flucent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fast-ral%2Flucent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8491a07cf6f5213d368e07c48be2058da683feb
[INFO] building ast-ral/lucent against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fast-ral%2Flucent" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ast-ral/lucent on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ast-ral/lucent
[INFO] finished tweaking git repo https://github.com/ast-ral/lucent
[INFO] tweaked toml for git repo https://github.com/ast-ral/lucent written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ast-ral/lucent 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d92ba5c8283bb11ae434fe578e9da30292536c52a4abfcbb7c1e20f6b3103852
[INFO] running `Command { std: "docker" "start" "-a" "d92ba5c8283bb11ae434fe578e9da30292536c52a4abfcbb7c1e20f6b3103852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d92ba5c8283bb11ae434fe578e9da30292536c52a4abfcbb7c1e20f6b3103852", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d92ba5c8283bb11ae434fe578e9da30292536c52a4abfcbb7c1e20f6b3103852", kill_on_drop: false }`
[INFO] [stdout] d92ba5c8283bb11ae434fe578e9da30292536c52a4abfcbb7c1e20f6b3103852
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 109438866c6e5d322147edacee3d7fb7d5fc8a6ac2eebdc447af38189c102284
[INFO] running `Command { std: "docker" "start" "-a" "109438866c6e5d322147edacee3d7fb7d5fc8a6ac2eebdc447af38189c102284", kill_on_drop: false }`
[INFO] [stderr]    Compiling lucent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/lexer.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_start` is never used
[INFO] [stdout]   --> src/lexer.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn identifier_start(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_continue` is never used
[INFO] [stdout]   --> src/lexer.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn identifier_continue(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_whitespace` is never used
[INFO] [stdout]   --> src/lexer.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_whitespace(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]   --> src/lexer.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]   --> src/lexer.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn lex(input: &str) -> Result<Vec<Token>, Error> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Kind`, `Variable`, `Lambda`, `Forall`, and `Application` are never constructed
[INFO] [stdout]   --> src/term.rs:6:2
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub enum TermInner {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 6  |     Kind(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 7  |     Variable(usize),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 8  |     Lambda {input: Term, body: Term},
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 9  |     Forall {input: Term, body: Term},
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Application {left: Term, right: Term},
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TermInner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ContextStack` is never used
[INFO] [stdout]   --> src/term.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ContextStack<'a> {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]   --> src/term.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate` is never used
[INFO] [stdout]   --> src/term.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn evaluate(term: &Term) -> Result<(Term, Term), Error> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate_helper` is never used
[INFO] [stdout]   --> src/term.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_helper(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_kind` is never used
[INFO] [stdout]    --> src/term.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn is_kind(term: &Term) -> bool {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute` is never used
[INFO] [stdout]    --> src/term.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn substitute(base: &Term, replacement: &Term) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute_helper` is never used
[INFO] [stdout]    --> src/term.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn substitute_helper(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abstract_term_by` is never used
[INFO] [stdout]    --> src/term.rs:174:4
[INFO] [stdout]     |
[INFO] [stdout] 174 | fn abstract_term_by(term: &Term, amount: usize) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abstract_term_by_helper` is never used
[INFO] [stdout]    --> src/term.rs:182:4
[INFO] [stdout]     |
[INFO] [stdout] 182 | fn abstract_term_by_helper(term: &Term, amount: usize, level: usize) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lift_by` is never used
[INFO] [stdout]    --> src/term.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn lift_by(term: &Term, amount: usize) -> Term {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "109438866c6e5d322147edacee3d7fb7d5fc8a6ac2eebdc447af38189c102284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109438866c6e5d322147edacee3d7fb7d5fc8a6ac2eebdc447af38189c102284", kill_on_drop: false }`
[INFO] [stdout] 109438866c6e5d322147edacee3d7fb7d5fc8a6ac2eebdc447af38189c102284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96f7be51dedaee158ec3de75536a910b31ded75f44c544afce6af70d26623a2e
[INFO] running `Command { std: "docker" "start" "-a" "96f7be51dedaee158ec3de75536a910b31ded75f44c544afce6af70d26623a2e", kill_on_drop: false }`
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/lexer.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_start` is never used
[INFO] [stdout]   --> src/lexer.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn identifier_start(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_continue` is never used
[INFO] [stdout]   --> src/lexer.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn identifier_continue(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_whitespace` is never used
[INFO] [stdout]   --> src/lexer.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_whitespace(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]   --> src/lexer.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]   --> src/lexer.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn lex(input: &str) -> Result<Vec<Token>, Error> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Kind`, `Variable`, `Lambda`, `Forall`, and `Application` are never constructed
[INFO] [stdout]   --> src/term.rs:6:2
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub enum TermInner {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 6  |     Kind(usize),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 7  |     Variable(usize),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 8  |     Lambda {input: Term, body: Term},
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 9  |     Forall {input: Term, body: Term},
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Application {left: Term, right: Term},
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TermInner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ContextStack` is never used
[INFO] [stdout]   --> src/term.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum ContextStack<'a> {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]   --> src/term.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate` is never used
[INFO] [stdout]   --> src/term.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn evaluate(term: &Term) -> Result<(Term, Term), Error> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lucent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `evaluate_helper` is never used
[INFO] [stdout]   --> src/term.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_helper(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_kind` is never used
[INFO] [stdout]    --> src/term.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn is_kind(term: &Term) -> bool {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute` is never used
[INFO] [stdout]    --> src/term.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn substitute(base: &Term, replacement: &Term) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `substitute_helper` is never used
[INFO] [stdout]    --> src/term.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn substitute_helper(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abstract_term_by` is never used
[INFO] [stdout]    --> src/term.rs:174:4
[INFO] [stdout]     |
[INFO] [stdout] 174 | fn abstract_term_by(term: &Term, amount: usize) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abstract_term_by_helper` is never used
[INFO] [stdout]    --> src/term.rs:182:4
[INFO] [stdout]     |
[INFO] [stdout] 182 | fn abstract_term_by_helper(term: &Term, amount: usize, level: usize) -> Term {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lift_by` is never used
[INFO] [stdout]    --> src/term.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn lift_by(term: &Term, amount: usize) -> Term {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/lexer.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_start` is never used
[INFO] [stdout]   --> src/lexer.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn identifier_start(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `identifier_continue` is never used
[INFO] [stdout]   --> src/lexer.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn identifier_continue(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_whitespace` is never used
[INFO] [stdout]   --> src/lexer.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_whitespace(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]   --> src/lexer.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]   --> src/lexer.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn lex(input: &str) -> Result<Vec<Token>, Error> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lift_by` is never used
[INFO] [stdout]    --> src/term.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn lift_by(term: &Term, amount: usize) -> Term {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "96f7be51dedaee158ec3de75536a910b31ded75f44c544afce6af70d26623a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f7be51dedaee158ec3de75536a910b31ded75f44c544afce6af70d26623a2e", kill_on_drop: false }`
[INFO] [stdout] 96f7be51dedaee158ec3de75536a910b31ded75f44c544afce6af70d26623a2e