[INFO] updating cached repository tomvidm/rusty-cas
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomvidm/rusty-cas
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomvidm/rusty-cas" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomvidm/rusty-cas" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tomvidm/rusty-cas"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tomvidm/rusty-cas'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e22427513d23384a02bb705850a9930e1a073d3
[INFO] sha for GitHub repo tomvidm/rusty-cas: 3e22427513d23384a02bb705850a9930e1a073d3
[INFO] validating manifest of tomvidm/rusty-cas on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomvidm/rusty-cas on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomvidm/rusty-cas
[INFO] finished frobbing tomvidm/rusty-cas
[INFO] frobbed toml for tomvidm/rusty-cas written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas/Cargo.toml
[INFO] started frobbing tomvidm/rusty-cas
[INFO] finished frobbing tomvidm/rusty-cas
[INFO] frobbed toml for tomvidm/rusty-cas written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/tomvidm/rusty-cas/Cargo.toml
[INFO] crate tomvidm/rusty-cas has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tomvidm/rusty-cas against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 86a02490863eca9fb5f665868bd33f5e586fe39c2aaab4d1df0762487e509418
[INFO] running `"docker" "start" "-a" "86a02490863eca9fb5f665868bd33f5e586fe39c2aaab4d1df0762487e509418"`
[INFO] [stderr]    Compiling sym v0.1.0 (/opt/crater/workdir)
[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: doc comment not used by rustdoc
[INFO] [stderr]    --> src/lexer.rs:241:25
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         /// Push top operator to output
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: consider prefixing 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:105:17
[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: consider prefixing 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: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp_number`
[INFO] [stderr]    --> src/lexer.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing 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: method is never used: `eval_expr_with`
[INFO] [stderr]   --> src/symengine.rs:25:5
[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: method is never used: `get_variable`
[INFO] [stderr]   --> src/symengine.rs:39:5
[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:124:1
[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:261:1
[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:21:1
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `"docker" "inspect" "86a02490863eca9fb5f665868bd33f5e586fe39c2aaab4d1df0762487e509418"`
[INFO] running `"docker" "rm" "-f" "86a02490863eca9fb5f665868bd33f5e586fe39c2aaab4d1df0762487e509418"`
[INFO] [stdout] 86a02490863eca9fb5f665868bd33f5e586fe39c2aaab4d1df0762487e509418
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6e258d52dfa399abfc5093ad2f5e6c9ed21703fdf1fc7c109126219493b49e5a
[INFO] running `"docker" "start" "-a" "6e258d52dfa399abfc5093ad2f5e6c9ed21703fdf1fc7c109126219493b49e5a"`
[INFO] [stderr]    Compiling sym v0.1.0 (/opt/crater/workdir)
[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: doc comment not used by rustdoc
[INFO] [stderr]    --> src/lexer.rs:241:25
[INFO] [stderr]     |
[INFO] [stderr] 241 |                         /// Push top operator to output
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: consider prefixing 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: consider prefixing 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: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `postfixed_tokens` is never read
[INFO] [stderr]    --> src/symengine.rs:105:17
[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: consider prefixing 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: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp_number`
[INFO] [stderr]    --> src/lexer.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |     let mut temp_number = Numeric::from_integer(0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: consider prefixing 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: consider prefixing 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: consider prefixing 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: consider prefixing 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:124:1
[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:261:1
[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:21:1
[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] 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]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `"docker" "inspect" "6e258d52dfa399abfc5093ad2f5e6c9ed21703fdf1fc7c109126219493b49e5a"`
[INFO] running `"docker" "rm" "-f" "6e258d52dfa399abfc5093ad2f5e6c9ed21703fdf1fc7c109126219493b49e5a"`
[INFO] [stdout] 6e258d52dfa399abfc5093ad2f5e6c9ed21703fdf1fc7c109126219493b49e5a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/tomvidm/rusty-cas:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 8ae7b6c5ee32ff40715bc4669a5f8a652e018153c2a6804f31131b12936a551b
[INFO] running `"docker" "start" "-a" "8ae7b6c5ee32ff40715bc4669a5f8a652e018153c2a6804f31131b12936a551b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sym-050ab54651dffa13
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test lexer::test_concatenation ... ok
[INFO] [stdout] test lexer::test_infix_to_postfix ... ok
[INFO] [stdout] test lexer::test_operator_precedence ... ok
[INFO] [stdout] test symexpr_rc::test_expr_on_stack_and_heap ... ok
[INFO] [stdout] test symexpr_rc::test_trimming ... ok
[INFO] [stdout] test symexpr_rc::test_evaluation_of_expr_with_variables ... ok
[INFO] [stdout] test symexpr_rc::test_arithmetic ... ok
[INFO] [stdout] test symengine::test_symengine_assignment_and_evaluation ... ok
[INFO] [stdout] test symengine::test_parser ... ok
[INFO] [stdout] test lexer::test_tokenizer ... ok
[INFO] [stdout] test symexpr_rc::test_unity_or_zero ... ok
[INFO] [stdout] test numeric::test_basic_operations ... 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" "8ae7b6c5ee32ff40715bc4669a5f8a652e018153c2a6804f31131b12936a551b"`
[INFO] running `"docker" "rm" "-f" "8ae7b6c5ee32ff40715bc4669a5f8a652e018153c2a6804f31131b12936a551b"`
[INFO] [stdout] 8ae7b6c5ee32ff40715bc4669a5f8a652e018153c2a6804f31131b12936a551b