[INFO] updating cached repository https://github.com/tomvidm/rusty-cas
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e22427513d23384a02bb705850a9930e1a073d3
[INFO] testing tomvidm/rusty-cas against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomvidm%2Frusty-cas" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomvidm/rusty-cas on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tomvidm/rusty-cas
[INFO] finished tweaking git repo https://github.com/tomvidm/rusty-cas
[INFO] tweaked toml for git repo https://github.com/tomvidm/rusty-cas written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tomvidm/rusty-cas already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] da1ada918afc667390f7c3bbb19973c3d7b33d435595408bddd1fa6016e0e345
[INFO] running `"docker" "start" "-a" "da1ada918afc667390f7c3bbb19973c3d7b33d435595408bddd1fa6016e0e345"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling sym v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/symengine.rs:46:61
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn get_index_of_variable(&self, key: &String) -> Option<(usize)> {
[INFO] [stderr]    |                                                             ^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/lexer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::char`
[INFO] [stderr]  --> src/lexer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::char;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Term`
[INFO] [stderr]    --> src/lexer.rs:125:23
[INFO] [stderr]     |
[INFO] [stderr] 125 |     use self::Token::{Term, Operator};
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:126:27
[INFO] [stderr]     |
[INFO] [stderr] 126 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:161:27
[INFO] [stderr]     |
[INFO] [stderr] 161 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:174:16
[INFO] [stderr]     |
[INFO] [stderr] 174 |             '0'...'9' => tokens.push(Term(TermToken::Number(Numeric::from_integer(ch.to_digit(10).unwrap() as IntegerType)))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             'A'...'z' => tokens.push(Term(TermToken::VariableKey(ch.to_string()))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lexer.rs:241:25
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         /// Push top operator to output
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 242 |                         postfix.push(op_from_stack.clone());
[INFO] [stderr]     |                         ----------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/symexpr_rc.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |             _ => return None
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for (i, x) in b.iter().enumerate() {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `postfixed_tokens` is never read
[INFO] [stderr]    --> src/symengine.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut postfixed_tokens: Vec<Token> = Vec::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]    --> src/lexer.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for ch in slice.chars() {
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:135:10
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp_number`
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:166:10
[INFO] [stderr]     |
[INFO] [stderr] 166 |     for (i, ch) in string.chars().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:207:10
[INFO] [stderr]     |
[INFO] [stderr] 207 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]   --> src/cli.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[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: associated function is never used: `eval_expr_with`
[INFO] [stderr]   --> src/symengine.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn eval_expr_with(&self,key: &String, values: &Vec<Numeric>) -> Option<Numeric> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_variable`
[INFO] [stderr]   --> src/symengine.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn get_variable(&self, key: &String) -> Option<Numeric> {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokenize_number`
[INFO] [stderr]    --> src/lexer.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn tokenize_number(slice: &str) -> Token {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_postfix`
[INFO] [stderr]    --> src/lexer.rs:261:8
[INFO] [stderr]     |
[INFO] [stderr] 261 | pub fn string_to_postfix(string: &String) -> Tokens {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_input`
[INFO] [stderr]   --> src/cli.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LeftP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:101:7
[INFO] [stderr]     |
[INFO] [stderr] 101 | const LeftP: Operator = Operator{precedence: 1, op: OperatorType::LeftP};
[INFO] [stderr]     |       ^^^^^ help: convert the identifier to upper case: `LEFT_P`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `RightP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:102:7
[INFO] [stderr]     |
[INFO] [stderr] 102 | const RightP: Operator = Operator{precedence: 1, op: OperatorType::RightP};
[INFO] [stderr]     |       ^^^^^^ help: convert the identifier to upper case: `RIGHT_P`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Add` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:103:7
[INFO] [stderr]     |
[INFO] [stderr] 103 | const Add: Operator = Operator{precedence: 2, op: OperatorType::Add};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `ADD`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Mul` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:104:7
[INFO] [stderr]     |
[INFO] [stderr] 104 | const Mul: Operator = Operator{precedence: 4, op: OperatorType::Mul};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `MUL`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Assignment` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:105:7
[INFO] [stderr]     |
[INFO] [stderr] 105 | const Assignment: Operator = Operator{precedence: 4, op: OperatorType::Assignment};
[INFO] [stderr]     |       ^^^^^^^^^^ help: convert the identifier to upper case: `ASSIGNMENT`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     io::stdin().read_line(&mut input);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "da1ada918afc667390f7c3bbb19973c3d7b33d435595408bddd1fa6016e0e345"`
[INFO] running `"docker" "rm" "-f" "da1ada918afc667390f7c3bbb19973c3d7b33d435595408bddd1fa6016e0e345"`
[INFO] [stdout] da1ada918afc667390f7c3bbb19973c3d7b33d435595408bddd1fa6016e0e345
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d175f304c44ce4fd303c244c69722557129222e94ce13b0a6c04e1882b072d6
[INFO] running `"docker" "start" "-a" "9d175f304c44ce4fd303c244c69722557129222e94ce13b0a6c04e1882b072d6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling sym v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/symengine.rs:46:61
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn get_index_of_variable(&self, key: &String) -> Option<(usize)> {
[INFO] [stderr]    |                                                             ^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/lexer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::char`
[INFO] [stderr]  --> src/lexer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::char;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Term`
[INFO] [stderr]    --> src/lexer.rs:125:23
[INFO] [stderr]     |
[INFO] [stderr] 125 |     use self::Token::{Term, Operator};
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:126:27
[INFO] [stderr]     |
[INFO] [stderr] 126 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:161:27
[INFO] [stderr]     |
[INFO] [stderr] 161 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:174:16
[INFO] [stderr]     |
[INFO] [stderr] 174 |             '0'...'9' => tokens.push(Term(TermToken::Number(Numeric::from_integer(ch.to_digit(10).unwrap() as IntegerType)))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             'A'...'z' => tokens.push(Term(TermToken::VariableKey(ch.to_string()))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lexer.rs:241:25
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         /// Push top operator to output
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 242 |                         postfix.push(op_from_stack.clone());
[INFO] [stderr]     |                         ----------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Term`
[INFO] [stderr]    --> src/lexer.rs:268:23
[INFO] [stderr]     |
[INFO] [stderr] 268 |     use self::Token::{Term, Operator};
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:279:27
[INFO] [stderr]     |
[INFO] [stderr] 279 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:299:27
[INFO] [stderr]     |
[INFO] [stderr] 299 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:377:27
[INFO] [stderr]     |
[INFO] [stderr] 377 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/symexpr_rc.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |             _ => return None
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for (i, x) in b.iter().enumerate() {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `values`
[INFO] [stderr]    --> src/symexpr_rc.rs:288:9
[INFO] [stderr]     |
[INFO] [stderr] 288 |     let values: Vec<Numeric> = vec![
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/symengine.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let key = String::from("x");
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `postfixed_tokens` is never read
[INFO] [stderr]    --> src/symengine.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut postfixed_tokens: Vec<Token> = Vec::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]    --> src/lexer.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for ch in slice.chars() {
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:135:10
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp_number`
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:166:10
[INFO] [stderr]     |
[INFO] [stderr] 166 |     for (i, ch) in string.chars().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:207:10
[INFO] [stderr]     |
[INFO] [stderr] 207 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]   --> src/cli.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[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: function is never used: `tokenize_number`
[INFO] [stderr]    --> src/lexer.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn tokenize_number(slice: &str) -> Token {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_postfix`
[INFO] [stderr]    --> src/lexer.rs:261:8
[INFO] [stderr]     |
[INFO] [stderr] 261 | pub fn string_to_postfix(string: &String) -> Tokens {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_input`
[INFO] [stderr]   --> src/cli.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LeftP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:101:7
[INFO] [stderr]     |
[INFO] [stderr] 101 | const LeftP: Operator = Operator{precedence: 1, op: OperatorType::LeftP};
[INFO] [stderr]     |       ^^^^^ help: convert the identifier to upper case: `LEFT_P`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `RightP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:102:7
[INFO] [stderr]     |
[INFO] [stderr] 102 | const RightP: Operator = Operator{precedence: 1, op: OperatorType::RightP};
[INFO] [stderr]     |       ^^^^^^ help: convert the identifier to upper case: `RIGHT_P`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Add` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:103:7
[INFO] [stderr]     |
[INFO] [stderr] 103 | const Add: Operator = Operator{precedence: 2, op: OperatorType::Add};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `ADD`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Mul` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:104:7
[INFO] [stderr]     |
[INFO] [stderr] 104 | const Mul: Operator = Operator{precedence: 4, op: OperatorType::Mul};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `MUL`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Assignment` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:105:7
[INFO] [stderr]     |
[INFO] [stderr] 105 | const Assignment: Operator = Operator{precedence: 4, op: OperatorType::Assignment};
[INFO] [stderr]     |       ^^^^^^^^^^ help: convert the identifier to upper case: `ASSIGNMENT`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     io::stdin().read_line(&mut input);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 35 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `"docker" "inspect" "9d175f304c44ce4fd303c244c69722557129222e94ce13b0a6c04e1882b072d6"`
[INFO] running `"docker" "rm" "-f" "9d175f304c44ce4fd303c244c69722557129222e94ce13b0a6c04e1882b072d6"`
[INFO] [stdout] 9d175f304c44ce4fd303c244c69722557129222e94ce13b0a6c04e1882b072d6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 79fb948c510c5f6f195a91c8c3aa50aff28b6bf13cc29f4711b11d5200c328ec
[INFO] running `"docker" "start" "-a" "79fb948c510c5f6f195a91c8c3aa50aff28b6bf13cc29f4711b11d5200c328ec"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/symengine.rs:46:61
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn get_index_of_variable(&self, key: &String) -> Option<(usize)> {
[INFO] [stderr]    |                                                             ^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/lexer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::char`
[INFO] [stderr]  --> src/lexer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::char;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Term`
[INFO] [stderr]    --> src/lexer.rs:125:23
[INFO] [stderr]     |
[INFO] [stderr] 125 |     use self::Token::{Term, Operator};
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:126:27
[INFO] [stderr]     |
[INFO] [stderr] 126 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Number`, `VariableKey`
[INFO] [stderr]    --> src/lexer.rs:161:27
[INFO] [stderr]     |
[INFO] [stderr] 161 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:174:16
[INFO] [stderr]     |
[INFO] [stderr] 174 |             '0'...'9' => tokens.push(Term(TermToken::Number(Numeric::from_integer(ch.to_digit(10).unwrap() as IntegerType)))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             'A'...'z' => tokens.push(Term(TermToken::VariableKey(ch.to_string()))),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lexer.rs:241:25
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         /// Push top operator to output
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 242 |                         postfix.push(op_from_stack.clone());
[INFO] [stderr]     |                         ----------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Term`
[INFO] [stderr]    --> src/lexer.rs:268:23
[INFO] [stderr]     |
[INFO] [stderr] 268 |     use self::Token::{Term, Operator};
[INFO] [stderr]     |                       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:279:27
[INFO] [stderr]     |
[INFO] [stderr] 279 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:299:27
[INFO] [stderr]     |
[INFO] [stderr] 299 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Number`
[INFO] [stderr]    --> src/lexer.rs:377:27
[INFO] [stderr]     |
[INFO] [stderr] 377 |     use self::TermToken::{Number, VariableKey};
[INFO] [stderr]     |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/symexpr_rc.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |             _ => return None
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for (i, x) in b.iter().enumerate() {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `values`
[INFO] [stderr]    --> src/symexpr_rc.rs:288:9
[INFO] [stderr]     |
[INFO] [stderr] 288 |     let values: Vec<Numeric> = vec![
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/symengine.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let key = String::from("x");
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `postfixed_tokens` is never read
[INFO] [stderr]    --> src/symengine.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut postfixed_tokens: Vec<Token> = Vec::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ch`
[INFO] [stderr]    --> src/lexer.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for ch in slice.chars() {
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_ch`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:135:10
[INFO] [stderr]     |
[INFO] [stderr] 135 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp_number`
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temp_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:166:10
[INFO] [stderr]     |
[INFO] [stderr] 166 |     for (i, ch) in string.chars().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lexer.rs:207:10
[INFO] [stderr]     |
[INFO] [stderr] 207 |     for (i, token) in tokens.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]   --> src/cli.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lexer.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[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: function is never used: `tokenize_number`
[INFO] [stderr]    --> src/lexer.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn tokenize_number(slice: &str) -> Token {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_to_postfix`
[INFO] [stderr]    --> src/lexer.rs:261:8
[INFO] [stderr]     |
[INFO] [stderr] 261 | pub fn string_to_postfix(string: &String) -> Tokens {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_input`
[INFO] [stderr]   --> src/cli.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn parse_input(string: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LeftP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:101:7
[INFO] [stderr]     |
[INFO] [stderr] 101 | const LeftP: Operator = Operator{precedence: 1, op: OperatorType::LeftP};
[INFO] [stderr]     |       ^^^^^ help: convert the identifier to upper case: `LEFT_P`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `RightP` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:102:7
[INFO] [stderr]     |
[INFO] [stderr] 102 | const RightP: Operator = Operator{precedence: 1, op: OperatorType::RightP};
[INFO] [stderr]     |       ^^^^^^ help: convert the identifier to upper case: `RIGHT_P`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Add` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:103:7
[INFO] [stderr]     |
[INFO] [stderr] 103 | const Add: Operator = Operator{precedence: 2, op: OperatorType::Add};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `ADD`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Mul` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:104:7
[INFO] [stderr]     |
[INFO] [stderr] 104 | const Mul: Operator = Operator{precedence: 4, op: OperatorType::Mul};
[INFO] [stderr]     |       ^^^ help: convert the identifier to upper case: `MUL`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Assignment` should have an upper case name
[INFO] [stderr]    --> src/lexer.rs:105:7
[INFO] [stderr]     |
[INFO] [stderr] 105 | const Assignment: Operator = Operator{precedence: 4, op: OperatorType::Assignment};
[INFO] [stderr]     |       ^^^^^^^^^^ help: convert the identifier to upper case: `ASSIGNMENT`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cli.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     io::stdin().read_line(&mut input);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 35 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sym-8402892f6bec3cad
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test symexpr_rc::test_unity_or_zero ... ok
[INFO] [stdout] test symexpr_rc::test_evaluation_of_expr_with_variables ... ok
[INFO] [stdout] test symexpr_rc::test_arithmetic ... ok
[INFO] [stdout] test lexer::test_tokenizer ... ok
[INFO] [stdout] test lexer::test_operator_precedence ... ok
[INFO] [stdout] test lexer::test_concatenation ... ok
[INFO] [stdout] test numeric::test_basic_operations ... ok
[INFO] [stdout] test symexpr_rc::test_trimming ... ok
[INFO] [stdout] test symexpr_rc::test_expr_on_stack_and_heap ... ok
[INFO] [stdout] test symengine::test_parser ... ok
[INFO] [stdout] test lexer::test_infix_to_postfix ... ok
[INFO] [stdout] test symengine::test_symengine_assignment_and_evaluation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "79fb948c510c5f6f195a91c8c3aa50aff28b6bf13cc29f4711b11d5200c328ec"`
[INFO] running `"docker" "rm" "-f" "79fb948c510c5f6f195a91c8c3aa50aff28b6bf13cc29f4711b11d5200c328ec"`
[INFO] [stdout] 79fb948c510c5f6f195a91c8c3aa50aff28b6bf13cc29f4711b11d5200c328ec