[INFO] cloning repository https://github.com/hasanhaja/expression-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hasanhaja/expression-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fexpression-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fexpression-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 263a2af51df33cb5ed9c3d03eb5f0a438c3be0ed
[INFO] testing hasanhaja/expression-rs against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhasanhaja%2Fexpression-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hasanhaja/expression-rs on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hasanhaja/expression-rs
[INFO] finished tweaking git repo https://github.com/hasanhaja/expression-rs
[INFO] tweaked toml for git repo https://github.com/hasanhaja/expression-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/hasanhaja/expression-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 592778a1b421a9516ae0d61d5789ce966dd91b2551c2ae6d4733a97afbc10859
[INFO] running `Command { std: "docker" "start" "-a" "592778a1b421a9516ae0d61d5789ce966dd91b2551c2ae6d4733a97afbc10859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "592778a1b421a9516ae0d61d5789ce966dd91b2551c2ae6d4733a97afbc10859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592778a1b421a9516ae0d61d5789ce966dd91b2551c2ae6d4733a97afbc10859", kill_on_drop: false }`
[INFO] [stdout] 592778a1b421a9516ae0d61d5789ce966dd91b2551c2ae6d4733a97afbc10859
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4666fa5cc1a04c477dcb76e9dfba68899c04d0f7b623abf8c4d4b5ea2a7583dd
[INFO] running `Command { std: "docker" "start" "-a" "4666fa5cc1a04c477dcb76e9dfba68899c04d0f7b623abf8c4d4b5ea2a7583dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling expression-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `resultant`
[INFO] [stdout]    --> src/main.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_resultant`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/main.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let op: Token;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last`
[INFO] [stdout]    --> src/main.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let last = polish_tokens.last().unwrap();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_last`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:204:34
[INFO] [stdout]     |
[INFO] [stdout] 204 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:230:34
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:256:34
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut tokens: Vec<Token> = chars.iter()
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_parens`
[INFO] [stdout]    --> src/main.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn insert_parens(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_polish`
[INFO] [stdout]    --> src/main.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn into_polish(char_tokens: Vec<char>) -> Vec<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_operator`
[INFO] [stdout]    --> src/main.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn is_operator(token: &char) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `polish_to_expr`
[INFO] [stdout]    --> src/main.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn polish_to_expr(polish_tokens: Vec<char>) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_expr`
[INFO] [stdout]    --> src/main.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn build_expr(&self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval_expr`
[INFO] [stdout]    --> src/main.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn eval_expr(expr: Expr) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]    --> src/main.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn eval(&self) -> f64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:198:19
[INFO] [stdout]     |
[INFO] [stdout] 198 |             Expr {value: value, left: Some(left_expr), right: Some(right_expr) } => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |             Expr {value: value, left: None, right: Some(right_expr)} => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:252:19
[INFO] [stdout]     |
[INFO] [stdout] 252 |             Expr {value: value, left: Some(left_expr), right: None} => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "4666fa5cc1a04c477dcb76e9dfba68899c04d0f7b623abf8c4d4b5ea2a7583dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4666fa5cc1a04c477dcb76e9dfba68899c04d0f7b623abf8c4d4b5ea2a7583dd", kill_on_drop: false }`
[INFO] [stdout] 4666fa5cc1a04c477dcb76e9dfba68899c04d0f7b623abf8c4d4b5ea2a7583dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b472ca589cc290aa1c85161288481b02c3384db40f5eb9ef525366494577327a
[INFO] running `Command { std: "docker" "start" "-a" "b472ca589cc290aa1c85161288481b02c3384db40f5eb9ef525366494577327a", kill_on_drop: false }`
[INFO] [stderr]    Compiling expression-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:442:9
[INFO] [stdout]     |
[INFO] [stdout] 442 | /         /// The tree is built to represent this: 1 + (2 * 3) + 4
[INFO] [stdout] 443 | |         /// However, an alternative structure would be 1 + 4 + (2 * 3)
[INFO] [stdout] 444 | |         /// and the tree does not handle that
[INFO] [stdout]     | |_____________________________________________^
[INFO] [stdout] 445 | /         let l_left = Expr {
[INFO] [stdout] 446 | |             value: Token::Value(1f64),
[INFO] [stdout] 447 | |             left: None,
[INFO] [stdout] 448 | |             right: None,
[INFO] [stdout] 449 | |         };
[INFO] [stdout]     | |__________- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resultant`
[INFO] [stdout]    --> src/main.rs:107:17
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_resultant`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/main.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let op: Token;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last`
[INFO] [stdout]    --> src/main.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let last = polish_tokens.last().unwrap();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_last`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:204:34
[INFO] [stdout]     |
[INFO] [stdout] 204 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:230:34
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]    --> src/main.rs:256:34
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     Token::Value(num) => {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut tokens: Vec<Token> = chars.iter()
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_parens`
[INFO] [stdout]    --> src/main.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn insert_parens(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_polish`
[INFO] [stdout]    --> src/main.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn into_polish(char_tokens: Vec<char>) -> Vec<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_operator`
[INFO] [stdout]    --> src/main.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn is_operator(token: &char) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `polish_to_expr`
[INFO] [stdout]    --> src/main.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn polish_to_expr(polish_tokens: Vec<char>) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_expr`
[INFO] [stdout]    --> src/main.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn build_expr(&self) -> Expr {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]    --> src/main.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn eval(&self) -> f64 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:198:19
[INFO] [stdout]     |
[INFO] [stdout] 198 |             Expr {value: value, left: Some(left_expr), right: Some(right_expr) } => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |             Expr {value: value, left: None, right: Some(right_expr)} => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `value:` in this pattern is redundant
[INFO] [stdout]    --> src/main.rs:252:19
[INFO] [stdout]     |
[INFO] [stdout] 252 |             Expr {value: value, left: Some(left_expr), right: None} => {
[INFO] [stdout]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "b472ca589cc290aa1c85161288481b02c3384db40f5eb9ef525366494577327a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b472ca589cc290aa1c85161288481b02c3384db40f5eb9ef525366494577327a", kill_on_drop: false }`
[INFO] [stdout] b472ca589cc290aa1c85161288481b02c3384db40f5eb9ef525366494577327a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08e645aad17289e23e4e9f6298427dc8e3bdf52a1c21f16a3019718ad6a762b9
[INFO] running `Command { std: "docker" "start" "-a" "08e645aad17289e23e4e9f6298427dc8e3bdf52a1c21f16a3019718ad6a762b9", kill_on_drop: false }`
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:442:9
[INFO] [stderr]     |
[INFO] [stderr] 442 | /         /// The tree is built to represent this: 1 + (2 * 3) + 4
[INFO] [stderr] 443 | |         /// However, an alternative structure would be 1 + 4 + (2 * 3)
[INFO] [stderr] 444 | |         /// and the tree does not handle that
[INFO] [stderr]     | |_____________________________________________^
[INFO] [stderr] 445 | /         let l_left = Expr {
[INFO] [stderr] 446 | |             value: Token::Value(1f64),
[INFO] [stderr] 447 | |             left: None,
[INFO] [stderr] 448 | |             right: None,
[INFO] [stderr] 449 | |         };
[INFO] [stderr]     | |__________- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resultant`
[INFO] [stderr]    --> src/main.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stderr]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_resultant`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/main.rs:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let op: Token;
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `last`
[INFO] [stderr]    --> src/main.rs:162:13
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let last = polish_tokens.last().unwrap();
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_last`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/main.rs:204:34
[INFO] [stderr]     |
[INFO] [stderr] 204 |                     Token::Value(num) => {
[INFO] [stderr]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/main.rs:230:34
[INFO] [stderr]     |
[INFO] [stderr] 230 |                     Token::Value(num) => {
[INFO] [stderr]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num`
[INFO] [stderr]    --> src/main.rs:256:34
[INFO] [stderr]     |
[INFO] [stderr] 256 |                     Token::Value(num) => {
[INFO] [stderr]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let mut tokens: Vec<Token> = chars.iter()
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut resultant: Vec<Token> = Vec::new();
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_parens`
[INFO] [stderr]    --> src/main.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn insert_parens(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `into_polish`
[INFO] [stderr]    --> src/main.rs:127:8
[INFO] [stderr]     |
[INFO] [stderr] 127 |     fn into_polish(char_tokens: Vec<char>) -> Vec<char> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_operator`
[INFO] [stderr]    --> src/main.rs:142:8
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn is_operator(token: &char) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `polish_to_expr`
[INFO] [stderr]    --> src/main.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn polish_to_expr(polish_tokens: Vec<char>) -> Expr {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `build_expr`
[INFO] [stderr]    --> src/main.rs:186:8
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn build_expr(&self) -> Expr {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eval`
[INFO] [stderr]    --> src/main.rs:289:8
[INFO] [stderr]     |
[INFO] [stderr] 289 |     fn eval(&self) -> f64 {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the `value:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:198:19
[INFO] [stderr]     |
[INFO] [stderr] 198 |             Expr {value: value, left: Some(left_expr), right: Some(right_expr) } => {
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `value:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:225:19
[INFO] [stderr]     |
[INFO] [stderr] 225 |             Expr {value: value, left: None, right: Some(right_expr)} => {
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stderr] 
[INFO] [stderr] warning: the `value:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:252:19
[INFO] [stderr]     |
[INFO] [stderr] 252 |             Expr {value: value, left: Some(left_expr), right: None} => {
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: use shorthand field pattern: `value`
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/expression_rs-6f95751d94e145ba)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::eval_expr_with_complex_mult ... ok
[INFO] [stdout] test tests::eval_expr_with_just_value ... ok
[INFO] [stdout] test tests::eval_expr_with_nested_add ... ok
[INFO] [stdout] test tests::eval_expr_with_nested_mult ... ok
[INFO] [stdout] test tests::eval_expr_with_simple_add ... ok
[INFO] [stdout] test tests::eval_expr_with_simple_mult ... ok
[INFO] [stdout] test tests::extract_char_without_spaces ... ok
[INFO] [stdout] test tests::tokenize_string_to_vector_of_chars ... ok
[INFO] [stdout] test tests::tokenize_string_to_vector_of_string ... ok
[INFO] [stdout] test tests::extract_char_with_spaces ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::extract_char_with_spaces stdout ----
[INFO] [stdout] thread 'tests::extract_char_with_spaces' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `3`,
[INFO] [stdout]  right: `4`', src/main.rs:326:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x556b7688f1f0 - std::backtrace_rs::backtrace::libunwind::trace::h34055254b57d8e79
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x556b7688f1f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h8f1e3fbd9afff6ec
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x556b7688f1f0 - std::sys_common::backtrace::_print_fmt::h3a99a796b770c360
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x556b7688f1f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32d1f94a80615d18
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x556b768b19ec - core::fmt::write::h306731c068f7162c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/fmt/mod.rs:1110:17
[INFO] [stdout]    5:     0x556b7688c115 - std::io::Write::write_fmt::h87f19b0a2cd190bc
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/io/mod.rs:1588:15
[INFO] [stdout]    6:     0x556b7689135b - std::sys_common::backtrace::_print::h5abaa2601a852287
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x556b7689135b - std::sys_common::backtrace::print::h8d81445442bb638f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x556b7689135b - std::panicking::default_hook::{{closure}}::hcfe804496a9fa747
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x556b76890e6c - std::panicking::default_hook::hbea8e3ccf2ba8901
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x556b76891a24 - std::panicking::rust_panic_with_hook::h7ee9e1a2d0f8975a
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x556b76891507 - std::panicking::begin_panic_handler::{{closure}}::h8ab3b4491718b2c7
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x556b7688f6ec - std::sys_common::backtrace::__rust_end_short_backtrace::hd489062ffa586a9f
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x556b76891469 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x556b7682f651 - core::panicking::panic_fmt::hca6330e3e14086b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x556b768b0308 - core::panicking::assert_failed_inner::h33b45280069a80ed
[INFO] [stdout]   16:     0x556b7683358a - core::panicking::assert_failed::heb2d140cde026bfb
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/panicking.rs:117:5
[INFO] [stdout]   17:     0x556b7683756b - expression_rs::tests::extract_char_with_spaces::hab2b25daba3b5a48
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:326:9
[INFO] [stdout]   18:     0x556b7683740a - expression_rs::tests::extract_char_with_spaces::{{closure}}::h41844f3ad2aa5d6e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:322:5
[INFO] [stdout]   19:     0x556b76833a9e - core::ops::function::FnOnce::call_once::hc97b9691c93b82b4
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x556b768666f3 - core::ops::function::FnOnce::call_once::h152e7e439ff59e19
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x556b768666f3 - test::__rust_begin_short_backtrace::h0908f3b1fdbb72ab
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:577:5
[INFO] [stdout]   22:     0x556b768651b0 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf6d2a51e5587546c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   23:     0x556b768651b0 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8af660f3a89ef593
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x556b768651b0 - std::panicking::try::do_call::hd36aef60f84b6d36
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x556b768651b0 - std::panicking::try::h9932b4480e69817c
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x556b768651b0 - std::panic::catch_unwind::h6aa177099cfff5f8
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x556b768651b0 - test::run_test_in_process::h5884d6f2d99e20c3
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:600:18
[INFO] [stdout]   28:     0x556b768651b0 - test::run_test::run_test_inner::{{closure}}::h6fdc58c6d5f5b6e3
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:492:39
[INFO] [stdout]   29:     0x556b7683e862 - test::run_test::run_test_inner::{{closure}}::h408365d67a78ade8
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/test/src/lib.rs:519:37
[INFO] [stdout]   30:     0x556b7683e862 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb560b77c4f701523
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x556b76842418 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf2e7831dad93c597
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/thread/mod.rs:481:17
[INFO] [stdout]   32:     0x556b76842418 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd2e08783d8be4d02
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x556b76842418 - std::panicking::try::do_call::h062597b7acfd6b82
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x556b76842418 - std::panicking::try::h0d7b79db04c14552
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x556b76842418 - std::panic::catch_unwind::hb01a0b5e7c8cd43b
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x556b76842418 - std::thread::Builder::spawn_unchecked::{{closure}}::h5bde48cc887e0d1e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/thread/mod.rs:480:30
[INFO] [stdout]   37:     0x556b76842418 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h745ea30807a29e55
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x556b768964e7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ece6cfefaff1005
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   39:     0x556b768964e7 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb8b48e55c21f193e
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/alloc/src/boxed.rs:1575:9
[INFO] [stdout]   40:     0x556b768964e7 - std::sys::unix::thread::Thread::new::thread_start::h8c7c4450dba62914
[INFO] [stdout]                                at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/sys/unix/thread.rs:71:17
[INFO] [stdout]   41:     0x7fb24f1f9609 - start_thread
[INFO] [stdout]   42:     0x7fb24efcb293 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::extract_char_with_spaces
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin expression-rs'
[INFO] running `Command { std: "docker" "inspect" "08e645aad17289e23e4e9f6298427dc8e3bdf52a1c21f16a3019718ad6a762b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e645aad17289e23e4e9f6298427dc8e3bdf52a1c21f16a3019718ad6a762b9", kill_on_drop: false }`
[INFO] [stdout] 08e645aad17289e23e4e9f6298427dc8e3bdf52a1c21f16a3019718ad6a762b9
