[INFO] cloning repository https://github.com/AmaranthineCodices/rust-cc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AmaranthineCodices/rust-cc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmaranthineCodices%2Frust-cc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmaranthineCodices%2Frust-cc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aadbf5067e0dfab4adc806fbef40ba0dde6b67b9
[INFO] checking AmaranthineCodices/rust-cc against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmaranthineCodices%2Frust-cc" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AmaranthineCodices/rust-cc on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AmaranthineCodices/rust-cc
[INFO] finished tweaking git repo https://github.com/AmaranthineCodices/rust-cc
[INFO] tweaked toml for git repo https://github.com/AmaranthineCodices/rust-cc written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AmaranthineCodices/rust-cc 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy_static v1.0.0
[INFO] [stderr]   Downloaded thread_local v0.3.5
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded memchr v2.0.1
[INFO] [stderr]   Downloaded ucd-util v0.1.1
[INFO] [stderr]   Downloaded aho-corasick v0.6.4
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded libc v0.2.40
[INFO] [stderr]   Downloaded regex-syntax v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44ac6be5fedb4b7c34057a016752f62f5afaa8056847696c4edc821c8f917dfa
[INFO] running `Command { std: "docker" "start" "-a" "44ac6be5fedb4b7c34057a016752f62f5afaa8056847696c4edc821c8f917dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44ac6be5fedb4b7c34057a016752f62f5afaa8056847696c4edc821c8f917dfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44ac6be5fedb4b7c34057a016752f62f5afaa8056847696c4edc821c8f917dfa", kill_on_drop: false }`
[INFO] [stdout] 44ac6be5fedb4b7c34057a016752f62f5afaa8056847696c4edc821c8f917dfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54c080676001cadc3d6ac1343126abb280e087c281f17799c11a7dbdcca8fe77
[INFO] running `Command { std: "docker" "start" "-a" "54c080676001cadc3d6ac1343126abb280e087c281f17799c11a7dbdcca8fe77", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking rust-cc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/lexer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/lexer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum LexemeKind<'a> {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 11 |     Whitespace(&'a str),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 12 |     OpenBrace,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 13 |     CloseBrace,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     OpenParen,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 15 |     CloseParen,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 16 |     Semicolon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 17 |     Keyword(&'a str),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 18 |     Identifier(&'a str),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 19 |     IntLiteral(i32),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LexemeKind` 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: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LexError` is never used
[INFO] [stdout]   --> src/lexer.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum LexError {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LexError` 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 `try_get` is never used
[INFO] [stdout]   --> src/lexer.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn try_get<'a, F>(current_input: &'a str, pattern: &Regex, transformer: F) -> Option<(&'a str, &'a str, LexemeKind<'a>)>
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_identifier_str` is never used
[INFO] [stdout]   --> src/lexer.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn convert_identifier_str<'a>(identifier: &'a str) -> LexemeKind<'a> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_symbol_str` is never used
[INFO] [stdout]   --> src/lexer.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn convert_symbol_str<'a>(symbol: &'a str) -> LexemeKind<'a> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_token` is never used
[INFO] [stdout]   --> src/lexer.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn get_next_token<'a>(current_input: &'a str) -> Option<(&'a str, &'a str, LexemeKind<'a>)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex_str` is never used
[INFO] [stdout]   --> src/lexer.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn lex_str(input: &str) -> Result<Vec<Lexeme>, LexError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lexer.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 35 | / lazy_static! {
[INFO] [stdout] 36 | |     static ref KEYWORDS: HashSet<&'static str> = HashSet::from_iter(vec![
[INFO] [stdout] 37 | |         "return", "int"
[INFO] [stdout] 38 | |     ]);
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |     static ref SYMBOL_REGEX: Regex = Regex::new(r"^[\(\)\{\};]").unwrap();
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/lexer.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |     UnrecognizedInput { line: usize, column: usize },
[INFO] [stdout]    |     -----------------   ^^^^         ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "54c080676001cadc3d6ac1343126abb280e087c281f17799c11a7dbdcca8fe77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c080676001cadc3d6ac1343126abb280e087c281f17799c11a7dbdcca8fe77", kill_on_drop: false }`
[INFO] [stdout] 54c080676001cadc3d6ac1343126abb280e087c281f17799c11a7dbdcca8fe77