[INFO] cloning repository https://github.com/OisinA/zephyrus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OisinA/zephyrus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOisinA%2Fzephyrus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOisinA%2Fzephyrus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ead3a73a3ca515dee6e4de0e57021bdb545e7b4
[INFO] building OisinA/zephyrus 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%2FOisinA%2Fzephyrus" "/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/OisinA/zephyrus 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/OisinA/zephyrus
[INFO] finished tweaking git repo https://github.com/OisinA/zephyrus
[INFO] tweaked toml for git repo https://github.com/OisinA/zephyrus written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/OisinA/zephyrus 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-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fced98c7b126233992a1745b8776108795ae8be9ae1ef2e8f420ae9a285682d
[INFO] running `Command { std: "docker" "start" "-a" "2fced98c7b126233992a1745b8776108795ae8be9ae1ef2e8f420ae9a285682d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fced98c7b126233992a1745b8776108795ae8be9ae1ef2e8f420ae9a285682d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fced98c7b126233992a1745b8776108795ae8be9ae1ef2e8f420ae9a285682d", kill_on_drop: false }`
[INFO] [stdout] 2fced98c7b126233992a1745b8776108795ae8be9ae1ef2e8f420ae9a285682d
[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 -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] c04d8a1d7a54a2150b5200045cd1eb3b33a7be6bc3dd6626a5f70cb10befc0a1
[INFO] running `Command { std: "docker" "start" "-a" "c04d8a1d7a54a2150b5200045cd1eb3b33a7be6bc3dd6626a5f70cb10befc0a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling zephyrus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lexer.rs:11:44
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> Lexer<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     pub fn new(input: &'a String) -> Lexer<'_> {
[INFO] [stdout]    |                                            ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/parser.rs:86:21
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     while true {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:22:48
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &Error> {
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &dyn Error> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some('#') =>  {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 32 |             Some('=') => Token::Equals,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 33 |             Some(',') => Token::Comma,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 34 |             Some('"') => {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(mut lexer: Lexer<'_>) -> Parser<'_> {
[INFO] [stdout]    |                ----^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/parser.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 |         while let s = self.cur_token.clone() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `zephyrus::token::Token`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use zephyrus::token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |     match(file.write_all(output.as_bytes())) {
[INFO] [stdout]    |          ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 38 -     match(file.write_all(output.as_bytes())) {
[INFO] [stdout] 38 +     match file.write_all(output.as_bytes()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         Err(err) => panic!("couldn't create file"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         Err(err) => panic!("coudln't write to file"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lex = lexer::Lexer::new(&contents);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "c04d8a1d7a54a2150b5200045cd1eb3b33a7be6bc3dd6626a5f70cb10befc0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04d8a1d7a54a2150b5200045cd1eb3b33a7be6bc3dd6626a5f70cb10befc0a1", kill_on_drop: false }`
[INFO] [stdout] c04d8a1d7a54a2150b5200045cd1eb3b33a7be6bc3dd6626a5f70cb10befc0a1
[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 -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] 51d1863c1e2629ded996520c20f61cc1b5e61c6194f1e68dc8c6bebe31ae7971
[INFO] running `Command { std: "docker" "start" "-a" "51d1863c1e2629ded996520c20f61cc1b5e61c6194f1e68dc8c6bebe31ae7971", kill_on_drop: false }`
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lexer.rs:11:44
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> Lexer<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     pub fn new(input: &'a String) -> Lexer<'_> {
[INFO] [stdout]    |                                            ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/parser.rs:86:21
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     while true {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zephyrus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:22:48
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &Error> {
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &dyn Error> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some('#') =>  {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 32 |             Some('=') => Token::Equals,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 33 |             Some(',') => Token::Comma,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 34 |             Some('"') => {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(mut lexer: Lexer<'_>) -> Parser<'_> {
[INFO] [stdout]    |                ----^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/parser.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 |         while let s = self.cur_token.clone() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `zephyrus::token::Token`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use zephyrus::token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |     match(file.write_all(output.as_bytes())) {
[INFO] [stdout]    |          ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 38 -     match(file.write_all(output.as_bytes())) {
[INFO] [stdout] 38 +     match file.write_all(output.as_bytes()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lexer.rs:11:44
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> Lexer<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     pub fn new(input: &'a String) -> Lexer<'_> {
[INFO] [stdout]    |                                            ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/parser.rs:86:21
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     while true {
[INFO] [stdout]    |                     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:22:48
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &Error> {
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn parse(&mut self) -> Result<String, &dyn Error> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         Err(err) => panic!("couldn't create file"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/main.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         Err(err) => panic!("coudln't write to file"),
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lex = lexer::Lexer::new(&contents);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/lexer.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some('#') =>  {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 32 |             Some('=') => Token::Equals,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 33 |             Some(',') => Token::Comma,
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] 34 |             Some('"') => {
[INFO] [stdout]    |             --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 49 |             _ => Token::Illegal,
[INFO] [stdout]    |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(mut lexer: Lexer<'_>) -> Parser<'_> {
[INFO] [stdout]    |                ----^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]   --> src/parser.rs:24:15
[INFO] [stdout]    |
[INFO] [stdout] 24 |         while let s = self.cur_token.clone() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]    = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "51d1863c1e2629ded996520c20f61cc1b5e61c6194f1e68dc8c6bebe31ae7971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51d1863c1e2629ded996520c20f61cc1b5e61c6194f1e68dc8c6bebe31ae7971", kill_on_drop: false }`
[INFO] [stdout] 51d1863c1e2629ded996520c20f61cc1b5e61c6194f1e68dc8c6bebe31ae7971