[INFO] fetching crate ap_calc 0.1.1...
[INFO] testing ap_calc-0.1.1 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate ap_calc 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ap_calc 0.1.1 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ap_calc 0.1.1
[INFO] finished tweaking crates.io crate ap_calc 0.1.1
[INFO] tweaked toml for crates.io crate ap_calc 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding fraction v0.12.2 (latest: v0.15.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.4.3
[INFO] [stderr]   Downloaded num-complex v0.4.6
[INFO] [stderr]   Downloaded num-iter v0.1.45
[INFO] [stderr]   Downloaded fraction v0.12.2
[INFO] [stderr]   Downloaded num-rational v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8512a72ebb9fd8017f80f50571e647df411fc600ab3ab0acd2a53a2e836ee9f5
[INFO] running `Command { std: "docker" "start" "-a" "8512a72ebb9fd8017f80f50571e647df411fc600ab3ab0acd2a53a2e836ee9f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8512a72ebb9fd8017f80f50571e647df411fc600ab3ab0acd2a53a2e836ee9f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8512a72ebb9fd8017f80f50571e647df411fc600ab3ab0acd2a53a2e836ee9f5", kill_on_drop: false }`
[INFO] [stdout] 8512a72ebb9fd8017f80f50571e647df411fc600ab3ab0acd2a53a2e836ee9f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4d1a1d702fcc3e6883a762e4965f9bcb577819a590fffb5940e8972e73751f0
[INFO] running `Command { std: "docker" "start" "-a" "f4d1a1d702fcc3e6883a762e4965f9bcb577819a590fffb5940e8972e73751f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.5
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling fraction v0.12.2
[INFO] [stderr]    Compiling ap_calc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.93s
[INFO] running `Command { std: "docker" "inspect" "f4d1a1d702fcc3e6883a762e4965f9bcb577819a590fffb5940e8972e73751f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4d1a1d702fcc3e6883a762e4965f9bcb577819a590fffb5940e8972e73751f0", kill_on_drop: false }`
[INFO] [stdout] f4d1a1d702fcc3e6883a762e4965f9bcb577819a590fffb5940e8972e73751f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b31f44cf5cb7ab553b929611c31310edf10aa63054406922cc801479293d600
[INFO] running `Command { std: "docker" "start" "-a" "9b31f44cf5cb7ab553b929611c31310edf10aa63054406922cc801479293d600", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ap_calc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/parsing_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> tests/parsing_tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> tests/parsing_tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> tests/parsing_tests.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use fraction::{Fraction,Sign};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bank`
[INFO] [stdout]  --> tests/parsing_tests.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bank`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> tests/parsing_tests.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[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: unused variable: `f_of_5`
[INFO] [stdout]   --> tests/parsing_tests.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let f_of_5 = bank.get(&'f').unwrap().evaluate(&bank, Fraction::from(5)); 
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_f_of_5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/parsing_tests.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut bank = ap_calc::new_bank('f', "2(2-30)2");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/parsing_tests.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test_exponents() { let mut bank = ap_calc::new_bank('f',"x^2");
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/parsing_tests.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let mut bank = ap_calc::new_bank('f',"x''");
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "9b31f44cf5cb7ab553b929611c31310edf10aa63054406922cc801479293d600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b31f44cf5cb7ab553b929611c31310edf10aa63054406922cc801479293d600", kill_on_drop: false }`
[INFO] [stdout] 9b31f44cf5cb7ab553b929611c31310edf10aa63054406922cc801479293d600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9158ec32a62f2da567f756f39d63dc4dd39ece61fc917b7192ae55b610ba62c4
[INFO] running `Command { std: "docker" "start" "-a" "9158ec32a62f2da567f756f39d63dc4dd39ece61fc917b7192ae55b610ba62c4", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Sign`
[INFO] [stderr]  --> src/lib.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stderr]   |                         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::pow`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::pow;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/derivative.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/derivative.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/derivative.rs:75:30
[INFO] [stderr]    |
[INFO] [stderr] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stderr]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |             let x = &string[..last_implied];
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |             let y = &string[last_implied..];
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]    --> src/lib.rs:260:20
[INFO] [stderr]     |
[INFO] [stderr] 260 |                Err(error) => {
[INFO] [stderr]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stderr]     |                 ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:385:18
[INFO] [stderr]     |
[INFO] [stderr] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stderr]     |                  ^
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/lib.rs:454:22
[INFO] [stderr]     |
[INFO] [stderr] 454 |     let name = string.clone();
[INFO] [stderr]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ap_calc` (lib) generated 11 warnings (run `cargo fix --lib -p ap_calc` to apply 3 suggestions)
[INFO] [stderr] warning: `ap_calc` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> tests/parsing_tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> tests/parsing_tests.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> tests/parsing_tests.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sign`
[INFO] [stderr]  --> tests/parsing_tests.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 | use fraction::{Fraction,Sign};
[INFO] [stderr]   |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bank`
[INFO] [stderr]  --> tests/parsing_tests.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[INFO] [stderr]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bank`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/parsing_tests.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[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: unused variable: `f_of_5`
[INFO] [stderr]   --> tests/parsing_tests.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let f_of_5 = bank.get(&'f').unwrap().evaluate(&bank, Fraction::from(5)); 
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_f_of_5`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/parsing_tests.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut bank = ap_calc::new_bank('f', "2(2-30)2");
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/parsing_tests.rs:61:27
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn test_exponents() { let mut bank = ap_calc::new_bank('f',"x^2");
[INFO] [stderr]    |                           ----^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/parsing_tests.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let mut bank = ap_calc::new_bank('f',"x''");
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `ap_calc` (test "parsing_tests") generated 10 warnings (run `cargo fix --test "parsing_tests"` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ap_calc-b82fc474cc870a9b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/parsing_tests.rs (/opt/rustwide/target/debug/deps/parsing_tests-1620c84a6325d83d)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test derivative_tests::add_deriv ... ok
[INFO] [stdout] test derivative_tests::x_double_prime ... ok
[INFO] [stdout] test adding_to_bank ... ok
[INFO] [stdout] test derivative_tests::x_prime ... ok
[INFO] [stdout] test make_a_equation ... ok
[INFO] [stdout] test test_implied ... ok
[INFO] [stdout] test test_functions ... ok
[INFO] [stdout] test test_logs ... ok
[INFO] [stdout] test test_third ... ok
[INFO] [stdout] test derivative_tests::multi_deriv ... ok
[INFO] [stdout] test test_exponents ... ok
[INFO] [stdout] test test_variables ... ok
[INFO] [stdout] test test_trig_funcs ... ok
[INFO] [stdout] test derivative_tests::basic_deriv ... ok
[INFO] [stdout] test derivative_tests::multiplication_deriv ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ap_calc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9158ec32a62f2da567f756f39d63dc4dd39ece61fc917b7192ae55b610ba62c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9158ec32a62f2da567f756f39d63dc4dd39ece61fc917b7192ae55b610ba62c4", kill_on_drop: false }`
[INFO] [stdout] 9158ec32a62f2da567f756f39d63dc4dd39ece61fc917b7192ae55b610ba62c4
[INFO] testing ap_calc-0.1.1 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] extracting crate ap_calc 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate ap_calc 0.1.1 on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ap_calc 0.1.1
[INFO] finished tweaking crates.io crate ap_calc 0.1.1
[INFO] tweaked toml for crates.io crate ap_calc 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding fraction v0.12.2 (latest: v0.15.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7c10380abf4e7a5e00a6ef1868d7abee9a7750ce0e89e58021054dcd52d69bc
[INFO] running `Command { std: "docker" "start" "-a" "f7c10380abf4e7a5e00a6ef1868d7abee9a7750ce0e89e58021054dcd52d69bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7c10380abf4e7a5e00a6ef1868d7abee9a7750ce0e89e58021054dcd52d69bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c10380abf4e7a5e00a6ef1868d7abee9a7750ce0e89e58021054dcd52d69bc", kill_on_drop: false }`
[INFO] [stdout] f7c10380abf4e7a5e00a6ef1868d7abee9a7750ce0e89e58021054dcd52d69bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f0c6d00ec62edf8fd2abf30d35e54b57931f8d29942690800fa648c38278c1f
[INFO] running `Command { std: "docker" "start" "-a" "6f0c6d00ec62edf8fd2abf30d35e54b57931f8d29942690800fa648c38278c1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.5
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling fraction v0.12.2
[INFO] [stderr]    Compiling ap_calc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "6f0c6d00ec62edf8fd2abf30d35e54b57931f8d29942690800fa648c38278c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0c6d00ec62edf8fd2abf30d35e54b57931f8d29942690800fa648c38278c1f", kill_on_drop: false }`
[INFO] [stdout] 6f0c6d00ec62edf8fd2abf30d35e54b57931f8d29942690800fa648c38278c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8847262173bde9c75aaa9626b01b2e6c08bc595881811a31334130b9aae5734
[INFO] running `Command { std: "docker" "start" "-a" "c8847262173bde9c75aaa9626b01b2e6c08bc595881811a31334130b9aae5734", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ap_calc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/parsing_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> tests/parsing_tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> tests/parsing_tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> tests/parsing_tests.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use fraction::{Fraction,Sign};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sign`
[INFO] [stdout]  --> src/lib.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num::pow;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bank`
[INFO] [stdout]  --> tests/parsing_tests.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bank`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> tests/parsing_tests.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[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: unused variable: `f_of_5`
[INFO] [stdout]   --> tests/parsing_tests.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let f_of_5 = bank.get(&'f').unwrap().evaluate(&bank, Fraction::from(5)); 
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_f_of_5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/parsing_tests.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut bank = ap_calc::new_bank('f', "2(2-30)2");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/parsing_tests.rs:61:27
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn test_exponents() { let mut bank = ap_calc::new_bank('f',"x^2");
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/parsing_tests.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let mut bank = ap_calc::new_bank('f',"x''");
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/derivative.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/derivative.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let x = &string[..last_implied];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let y = &string[last_implied..];
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/lib.rs:260:20
[INFO] [stdout]     |
[INFO] [stdout] 260 |                Err(error) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:304:17
[INFO] [stdout]     |
[INFO] [stdout] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:385:18
[INFO] [stdout]     |
[INFO] [stdout] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stdout]     |                  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:454:22
[INFO] [stdout]     |
[INFO] [stdout] 454 |     let name = string.clone();
[INFO] [stdout]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "c8847262173bde9c75aaa9626b01b2e6c08bc595881811a31334130b9aae5734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8847262173bde9c75aaa9626b01b2e6c08bc595881811a31334130b9aae5734", kill_on_drop: false }`
[INFO] [stdout] c8847262173bde9c75aaa9626b01b2e6c08bc595881811a31334130b9aae5734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9e395a7524a3143529e151b984b1252bea240e71797a3c0f7e725c89643c5eb
[INFO] running `Command { std: "docker" "start" "-a" "e9e395a7524a3143529e151b984b1252bea240e71797a3c0f7e725c89643c5eb", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Sign`
[INFO] [stderr]  --> src/lib.rs:2:25
[INFO] [stderr]   |
[INFO] [stderr] 2 | use fraction::{Fraction,Sign,ToPrimitive};
[INFO] [stderr]   |                         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::pow`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::pow;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/derivative.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             _ => panic!("Operation not covered by ddx in match expression"),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/derivative.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         _ => panic!("its in the match of the eval_deriv")
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/derivative.rs:75:30
[INFO] [stderr]    |
[INFO] [stderr] 75 |         Expression::Variable(f)   => ddx(&get_expression(bank, &exp_cpy)),
[INFO] [stderr]    |                              ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |             let x = &string[..last_implied];
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |             let y = &string[last_implied..];
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]    --> src/lib.rs:260:20
[INFO] [stderr]     |
[INFO] [stderr] 260 |                Err(error) => {
[INFO] [stderr]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |                 _   => panic!("No OP BUT EQUATION"),
[INFO] [stderr]     |                 ^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:385:18
[INFO] [stderr]     |
[INFO] [stderr] 385 |                  _ => panic!("No OP BUT EQUATION"),
[INFO] [stderr]     |                  ^
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/lib.rs:454:22
[INFO] [stderr]     |
[INFO] [stderr] 454 |     let name = string.clone();
[INFO] [stderr]     |                      ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ap_calc` (lib) generated 11 warnings (run `cargo fix --lib -p ap_calc` to apply 3 suggestions)
[INFO] [stderr] warning: `ap_calc` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> tests/parsing_tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> tests/parsing_tests.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> tests/parsing_tests.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sign`
[INFO] [stderr]  --> tests/parsing_tests.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 | use fraction::{Fraction,Sign};
[INFO] [stderr]   |                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bank`
[INFO] [stderr]  --> tests/parsing_tests.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[INFO] [stderr]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bank`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/parsing_tests.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut bank = ap_calc::new_bank('f', wanted);
[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: unused variable: `f_of_5`
[INFO] [stderr]   --> tests/parsing_tests.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let f_of_5 = bank.get(&'f').unwrap().evaluate(&bank, Fraction::from(5)); 
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_f_of_5`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/parsing_tests.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut bank = ap_calc::new_bank('f', "2(2-30)2");
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/parsing_tests.rs:61:27
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn test_exponents() { let mut bank = ap_calc::new_bank('f',"x^2");
[INFO] [stderr]    |                           ----^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/parsing_tests.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let mut bank = ap_calc::new_bank('f',"x''");
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `ap_calc` (test "parsing_tests") generated 10 warnings (run `cargo fix --test "parsing_tests"` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ap_calc-b82fc474cc870a9b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/parsing_tests.rs (/opt/rustwide/target/debug/deps/parsing_tests-1620c84a6325d83d)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test derivative_tests::multiplication_deriv ... ok
[INFO] [stdout] test derivative_tests::multi_deriv ... ok
[INFO] [stdout] test derivative_tests::x_double_prime ... ok
[INFO] [stdout] test derivative_tests::basic_deriv ... ok
[INFO] [stdout] test make_a_equation ... ok
[INFO] [stdout] test adding_to_bank ... ok
[INFO] [stdout] test test_exponents ... ok
[INFO] [stdout] test derivative_tests::add_deriv ... ok
[INFO] [stdout] test test_logs ... ok
[INFO] [stdout] test test_functions ... ok
[INFO] [stdout] test derivative_tests::x_prime ... ok
[INFO] [stdout] test test_third ... ok
[INFO] [stdout] test test_implied ... ok
[INFO] [stdout] test test_variables ... ok
[INFO] [stdout] test test_trig_funcs ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ap_calc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e9e395a7524a3143529e151b984b1252bea240e71797a3c0f7e725c89643c5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9e395a7524a3143529e151b984b1252bea240e71797a3c0f7e725c89643c5eb", kill_on_drop: false }`
[INFO] [stdout] e9e395a7524a3143529e151b984b1252bea240e71797a3c0f7e725c89643c5eb
