[INFO] cloning repository https://github.com/Dzuchun/mathvis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dzuchun/mathvis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDzuchun%2Fmathvis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDzuchun%2Fmathvis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12fc5aec6e42e880cd59e198b817e852a6516015
[INFO] testing Dzuchun/mathvis against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDzuchun%2Fmathvis" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dzuchun/mathvis 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 git repo https://github.com/Dzuchun/mathvis
[INFO] finished tweaking git repo https://github.com/Dzuchun/mathvis
[INFO] tweaked toml for git repo https://github.com/Dzuchun/mathvis written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Dzuchun/mathvis already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2cffdace38f8dc9aeba5170836444a1d3aa8120dcc8ede6755a5247d6c6dfd6d
[INFO] running `Command { std: "docker" "start" "-a" "2cffdace38f8dc9aeba5170836444a1d3aa8120dcc8ede6755a5247d6c6dfd6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cffdace38f8dc9aeba5170836444a1d3aa8120dcc8ede6755a5247d6c6dfd6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cffdace38f8dc9aeba5170836444a1d3aa8120dcc8ede6755a5247d6c6dfd6d", kill_on_drop: false }`
[INFO] [stdout] 2cffdace38f8dc9aeba5170836444a1d3aa8120dcc8ede6755a5247d6c6dfd6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a0c95243ee9e389cf39c8e054e3df8c1ebad7c12b326b10f690fb5d3ea9bd49a
[INFO] running `Command { std: "docker" "start" "-a" "a0c95243ee9e389cf39c8e054e3df8c1ebad7c12b326b10f690fb5d3ea9bd49a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling mathvis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.18s
[INFO] running `Command { std: "docker" "inspect" "a0c95243ee9e389cf39c8e054e3df8c1ebad7c12b326b10f690fb5d3ea9bd49a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0c95243ee9e389cf39c8e054e3df8c1ebad7c12b326b10f690fb5d3ea9bd49a", kill_on_drop: false }`
[INFO] [stdout] a0c95243ee9e389cf39c8e054e3df8c1ebad7c12b326b10f690fb5d3ea9bd49a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a3aaca8282910e47428fe4bdf7f83e9dc757e58d9e97d1733cae34a0a5b003bb
[INFO] running `Command { std: "docker" "start" "-a" "a3aaca8282910e47428fe4bdf7f83e9dc757e58d9e97d1733cae34a0a5b003bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mathvis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/parser.rs:426:17
[INFO] [stdout]     |
[INFO] [stdout] 426 |         ArgList(ArgsErased, ArgsErased),
[INFO] [stdout]     |         ------- ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 426 |         ArgList((), ()),
[INFO] [stdout]     |                 ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/parser.rs:427:20
[INFO] [stdout]     |
[INFO] [stdout] 427 |         Evaluation(MissingError),
[INFO] [stdout]     |         ---------- ^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 427 |         Evaluation(()),
[INFO] [stdout]     |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/parser.rs:428:19
[INFO] [stdout]     |
[INFO] [stdout] 428 |         Evaluated(ArgsErased, Complex64, Complex64),
[INFO] [stdout]     |         --------- ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         fields in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 428 |         Evaluated((), (), ()),
[INFO] [stdout]     |                   ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "a3aaca8282910e47428fe4bdf7f83e9dc757e58d9e97d1733cae34a0a5b003bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3aaca8282910e47428fe4bdf7f83e9dc757e58d9e97d1733cae34a0a5b003bb", kill_on_drop: false }`
[INFO] [stdout] a3aaca8282910e47428fe4bdf7f83e9dc757e58d9e97d1733cae34a0a5b003bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2790c31324a0a36265ac83d13d2dc0a7558f676c16a63959527bf58f588da6a7
[INFO] running `Command { std: "docker" "start" "-a" "2790c31324a0a36265ac83d13d2dc0a7558f676c16a63959527bf58f588da6a7", kill_on_drop: false }`
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]    --> src/parser.rs:426:17
[INFO] [stderr]     |
[INFO] [stderr] 426 |         ArgList(ArgsErased, ArgsErased),
[INFO] [stderr]     |         ------- ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         fields in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]     |
[INFO] [stderr] 426 |         ArgList((), ()),
[INFO] [stderr]     |                 ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/parser.rs:427:20
[INFO] [stderr]     |
[INFO] [stderr] 427 |         Evaluation(MissingError),
[INFO] [stderr]     |         ---------- ^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 427 |         Evaluation(()),
[INFO] [stderr]     |                    ~~
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0`, `1`, and `2` are never read
[INFO] [stderr]    --> src/parser.rs:428:19
[INFO] [stderr]     |
[INFO] [stderr] 428 |         Evaluated(ArgsErased, Complex64, Complex64),
[INFO] [stderr]     |         --------- ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         fields in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]     |
[INFO] [stderr] 428 |         Evaluated((), (), ()),
[INFO] [stderr]     |                   ~~  ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: `mathvis` (lib test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mathvis-d06b848c5046e69d)
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::consts ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::addition_tests::should_demand_both ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::addition_tests::should_demand_one ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::should_succeed ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::should_demand_param ... ok
[INFO] [stdout] test evaluation_tree::functions::tests::should_evaluate_const ... ok
[INFO] [stdout] test evaluation_tree::functions::tests::should_evaluate_variable ... ok
[INFO] [stdout] test evaluation_tree::tests::consts ... ok
[INFO] [stdout] test evaluation_tree::tests::should_succeed ... ok
[INFO] [stdout] test evaluation_tree::tests::variable_should_exist ... ok
[INFO] [stdout] test lexer::tests::tokens ... ok
[INFO] [stdout] test parser::tests::constant1 ... ok
[INFO] [stdout] test parser::tests::constant2 ... ok
[INFO] [stdout] test parser::tests::constant3 ... ok
[INFO] [stdout] test parser::tests::constant4 ... ok
[INFO] [stdout] test parser::tests::constant6 ... ok
[INFO] [stdout] test parser::tests::constant8 ... ok
[INFO] [stdout] test parser::tests::constant9 ... ok
[INFO] [stdout] test parser::tests::bin_operator1 ... ok
[INFO] [stdout] test parser::tests::constant7 ... ok
[INFO] [stdout] test parser::tests::constant5 ... ok
[INFO] [stdout] test parser::tests::bin_operator2 ... ok
[INFO] [stdout] test parser::tests::function1 ... ok
[INFO] [stdout] test parser::tests::variable1 ... ok
[INFO] [stdout] test parser::tests::function3 ... ok
[INFO] [stdout] test parser::tests::bin_operator3 ... ok
[INFO] [stdout] test parser::tests::variable2 ... ok
[INFO] [stdout] test parser::tests::function2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mathvis
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 42) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 71) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 42) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 15 | args.assign_variable("x", Complex64::new(2.0, -3.0));
[INFO] [stdout]    |                           ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 16 | args.assign_variable("y", Complex64::new(-std::f64::consts::PI, 1.0));
[INFO] [stdout]    |                           ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 17 | args.assign_function("sin", Complex64::sin);
[INFO] [stdout]    |                             ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `args` found for struct `EvaluationTree` in the current scope
[INFO] [stdout]   --> src/lib.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 12 | let mut args = tree.args();
[INFO] [stdout]    |                     ^^^^ method not found in `EvaluationTree`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/evaluation_tree/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn args(&self) -> Args;
[INFO] [stdout]    |        ---- the method is available for `EvaluationTree` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Evaluatable` which provides `args` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use crate::mathvis::evaluation_tree::Evaluatable;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `evaluate` found for struct `EvaluationTree` in the current scope
[INFO] [stdout]   --> src/lib.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 20 | let result = tree.evaluate(&args).expect("Should be able to evaluate");
[INFO] [stdout]    |                   ^^^^^^^^ method not found in `EvaluationTree`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/evaluation_tree/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn evaluate(&self, arguments: &Args) -> Result<Self::Res, MissingError>;
[INFO] [stdout]    |        -------- the method is available for `EvaluationTree` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Evaluatable` which provides `evaluate` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use crate::mathvis::evaluation_tree::Evaluatable;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 71) stdout ----
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:101:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:112:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     continue 'outer;
[INFO] [stdout]    |              ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:122:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |     continue 'outer;
[INFO] [stdout]    |              ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:143:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |             continue 'outer;
[INFO] [stdout]    |                      ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:153:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]  --> src/lib.rs:76:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | input.clear();
[INFO] [stdout]   | ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]  --> src/lib.rs:77:36
[INFO] [stdout]   |
[INFO] [stdout] 9 | if std::io::stdin().read_line(&mut input).unwrap() == 0 {
[INFO] [stdout]   |                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | input.pop(); // pop '\n'
[INFO] [stdout]    | ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:83:40
[INFO] [stdout]    |
[INFO] [stdout] 15 | let tokens = match mathvis::lexer::lex(input.as_str()) {
[INFO] [stdout]    |                                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:132:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     input.clear();
[INFO] [stdout]    |     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:133:40
[INFO] [stdout]    |
[INFO] [stdout] 65 |     if std::io::stdin().read_line(&mut input).unwrap() == 0 {
[INFO] [stdout]    |                                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:136:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     input.pop(); // pop '\n'
[INFO] [stdout]    |     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:137:11
[INFO] [stdout]    |
[INFO] [stdout] 69 |     match input.parse() {
[INFO] [stdout]    |           ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:101:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:112:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     continue 'outer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:122:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     continue 'outer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:153:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]  --> src/lib.rs:75:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | std::io::stdout().flush().unwrap();
[INFO] [stdout]   |                   ^^^^^ method not found in `Stdout`
[INFO] [stdout]  --> /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1665:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: the method is available for `Stdout` here
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `flush` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 3 + use std::io::Write;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `match` arms have incompatible types
[INFO] [stdout]   --> src/lib.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |   let tokens = match mathvis::lexer::lex(input.as_str()) {
[INFO] [stdout]    |  ______________-
[INFO] [stdout] 16 | |     Ok((left, tokens)) => {
[INFO] [stdout] 17 | |         if !left.is_empty() {
[INFO] [stdout] 18 | |             println!("Info: \"{left}\" was ignored");
[INFO] [stdout] 19 | |         }
[INFO] [stdout] 20 | |         tokens
[INFO] [stdout]    | |         ------ this is found to be of type `Vec<Token>`
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         continue 'outer;
[INFO] [stdout]    | |         ^^^^^^^^^^^^^^^^ expected `Vec<Token>`, found `()`
[INFO] [stdout] 25 | |     }
[INFO] [stdout] 26 | | };
[INFO] [stdout]    | |_- `match` arms have incompatible types
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<Token>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `match` arms have incompatible types
[INFO] [stdout]   --> src/lib.rs:101:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |   let tree = match mathvis::evaluation_tree::EvaluationTree::from_tokens(tokens.as_slice()) {
[INFO] [stdout]    |  ____________-
[INFO] [stdout] 30 | |     Ok(tree) => tree,
[INFO] [stdout]    | |                 ---- this is found to be of type `EvaluationTree`
[INFO] [stdout] 31 | |     Err(err) => {
[INFO] [stdout] 32 | |         eprintln!("Failed to parse tokens: {err}");
[INFO] [stdout] 33 | |         continue 'outer;
[INFO] [stdout]    | |         ^^^^^^^^^^^^^^^^ expected `EvaluationTree`, found `()`
[INFO] [stdout] 34 | |     }
[INFO] [stdout] 35 | | };
[INFO] [stdout]    | |_- `match` arms have incompatible types
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `default_args` in this scope
[INFO] [stdout]   --> src/lib.rs:107:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | args.merge(default_args()); // merge with default args
[INFO] [stdout]    |            ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]   --> src/lib.rs:131:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     std::io::stdout().flush().unwrap();
[INFO] [stdout]    |                       ^^^^^ method not found in `Stdout`
[INFO] [stdout]   --> /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1665:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `Stdout` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `flush` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use std::io::Write;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `()` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/lib.rs:157:29
[INFO] [stdout]    |
[INFO] [stdout] 89 | println!("The end result is {res}");
[INFO] [stdout]    |                             ^^^^^ `()` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `()`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 25 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0268, E0277, E0308, E0425, E0426, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0268`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 42)
[INFO] [stdout]     src/lib.rs - (line 71)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "2790c31324a0a36265ac83d13d2dc0a7558f676c16a63959527bf58f588da6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2790c31324a0a36265ac83d13d2dc0a7558f676c16a63959527bf58f588da6a7", kill_on_drop: false }`
[INFO] [stdout] 2790c31324a0a36265ac83d13d2dc0a7558f676c16a63959527bf58f588da6a7
[INFO] testing Dzuchun/mathvis against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDzuchun%2Fmathvis" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dzuchun/mathvis 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 git repo https://github.com/Dzuchun/mathvis
[INFO] finished tweaking git repo https://github.com/Dzuchun/mathvis
[INFO] tweaked toml for git repo https://github.com/Dzuchun/mathvis written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Dzuchun/mathvis already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 29fd073e882320b99faeb943cddd04a2ac13302aa49064cae7df604fe7f2634c
[INFO] running `Command { std: "docker" "start" "-a" "29fd073e882320b99faeb943cddd04a2ac13302aa49064cae7df604fe7f2634c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29fd073e882320b99faeb943cddd04a2ac13302aa49064cae7df604fe7f2634c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29fd073e882320b99faeb943cddd04a2ac13302aa49064cae7df604fe7f2634c", kill_on_drop: false }`
[INFO] [stdout] 29fd073e882320b99faeb943cddd04a2ac13302aa49064cae7df604fe7f2634c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] db54f4aeaa090fa31f2fccc0a749b194fb6ed8c73152675406ef601fb08aa315
[INFO] running `Command { std: "docker" "start" "-a" "db54f4aeaa090fa31f2fccc0a749b194fb6ed8c73152675406ef601fb08aa315", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling mathvis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "db54f4aeaa090fa31f2fccc0a749b194fb6ed8c73152675406ef601fb08aa315", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db54f4aeaa090fa31f2fccc0a749b194fb6ed8c73152675406ef601fb08aa315", kill_on_drop: false }`
[INFO] [stdout] db54f4aeaa090fa31f2fccc0a749b194fb6ed8c73152675406ef601fb08aa315
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 15cd0df9c6b29327bbab704c72197870774ce41c4f82790ac786d4e4ff4767b1
[INFO] running `Command { std: "docker" "start" "-a" "15cd0df9c6b29327bbab704c72197870774ce41c4f82790ac786d4e4ff4767b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mathvis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> src/parser.rs:426:17
[INFO] [stdout]     |
[INFO] [stdout] 426 |         ArgList(ArgsErased, ArgsErased),
[INFO] [stdout]     |         ------- ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 426 |         ArgList((), ()),
[INFO] [stdout]     |                 ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/parser.rs:427:20
[INFO] [stdout]     |
[INFO] [stdout] 427 |         Evaluation(MissingError),
[INFO] [stdout]     |         ---------- ^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 427 |         Evaluation(()),
[INFO] [stdout]     |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]    --> src/parser.rs:428:19
[INFO] [stdout]     |
[INFO] [stdout] 428 |         Evaluated(ArgsErased, Complex64, Complex64),
[INFO] [stdout]     |         --------- ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         fields in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 428 |         Evaluated((), (), ()),
[INFO] [stdout]     |                   ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "15cd0df9c6b29327bbab704c72197870774ce41c4f82790ac786d4e4ff4767b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cd0df9c6b29327bbab704c72197870774ce41c4f82790ac786d4e4ff4767b1", kill_on_drop: false }`
[INFO] [stdout] 15cd0df9c6b29327bbab704c72197870774ce41c4f82790ac786d4e4ff4767b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] ba5dd2779f1c4d1b7618afd678baf5410d0ba5ee777ad97ed0ca62001846d210
[INFO] running `Command { std: "docker" "start" "-a" "ba5dd2779f1c4d1b7618afd678baf5410d0ba5ee777ad97ed0ca62001846d210", kill_on_drop: false }`
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]    --> src/parser.rs:426:17
[INFO] [stderr]     |
[INFO] [stderr] 426 |         ArgList(ArgsErased, ArgsErased),
[INFO] [stderr]     |         ------- ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         fields in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]     |
[INFO] [stderr] 426 |         ArgList((), ()),
[INFO] [stderr]     |                 ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/parser.rs:427:20
[INFO] [stderr]     |
[INFO] [stderr] 427 |         Evaluation(MissingError),
[INFO] [stderr]     |         ---------- ^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 427 |         Evaluation(()),
[INFO] [stderr]     |                    ~~
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0`, `1`, and `2` are never read
[INFO] [stderr]    --> src/parser.rs:428:19
[INFO] [stderr]     |
[INFO] [stderr] 428 |         Evaluated(ArgsErased, Complex64, Complex64),
[INFO] [stderr]     |         --------- ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         fields in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]     |
[INFO] [stderr] 428 |         Evaluated((), (), ()),
[INFO] [stderr]     |                   ~~  ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: `mathvis` (lib test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mathvis-d06b848c5046e69d)
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test evaluation_tree::arithmetic::addition_tests::should_demand_both ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::consts ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::addition_tests::should_demand_one ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::should_succeed ... ok
[INFO] [stdout] test evaluation_tree::arithmetic::negation_tests::should_demand_param ... ok
[INFO] [stdout] test evaluation_tree::functions::tests::should_evaluate_const ... ok
[INFO] [stdout] test evaluation_tree::functions::tests::should_evaluate_variable ... ok
[INFO] [stdout] test evaluation_tree::tests::consts ... ok
[INFO] [stdout] test evaluation_tree::tests::should_succeed ... ok
[INFO] [stdout] test evaluation_tree::tests::variable_should_exist ... ok
[INFO] [stdout] test lexer::tests::tokens ... ok
[INFO] [stdout] test parser::tests::constant2 ... ok
[INFO] [stdout] test parser::tests::constant4 ... ok
[INFO] [stdout] test parser::tests::constant1 ... ok
[INFO] [stdout] test parser::tests::bin_operator1 ... ok
[INFO] [stdout] test parser::tests::constant5 ... ok
[INFO] [stdout] test parser::tests::constant6 ... ok
[INFO] [stdout] test parser::tests::constant7 ... ok
[INFO] [stdout] test parser::tests::bin_operator2 ... ok
[INFO] [stdout] test parser::tests::constant8 ... ok
[INFO] [stdout] test parser::tests::constant9 ... ok
[INFO] [stdout] test parser::tests::constant3 ... ok
[INFO] [stdout] test parser::tests::bin_operator3 ... ok
[INFO] [stdout] test parser::tests::function1 ... ok
[INFO] [stdout] test parser::tests::variable1 ... ok
[INFO] [stdout] test parser::tests::variable2 ... ok
[INFO] [stdout] test parser::tests::function3 ... ok
[INFO] [stdout] test parser::tests::function2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mathvis
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 42) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 71) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 42) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 15 | args.assign_variable("x", Complex64::new(2.0, -3.0));
[INFO] [stdout]    |                           ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:55:27
[INFO] [stdout]    |
[INFO] [stdout] 16 | args.assign_variable("y", Complex64::new(-std::f64::consts::PI, 1.0));
[INFO] [stdout]    |                           ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Complex64`
[INFO] [stdout]   --> src/lib.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 17 | args.assign_function("sin", Complex64::sin);
[INFO] [stdout]    |                             ^^^^^^^^^ use of undeclared type `Complex64`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 2  + use num::complex::Complex64;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `args` found for struct `EvaluationTree` in the current scope
[INFO] [stdout]   --> src/lib.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 12 | let mut args = tree.args();
[INFO] [stdout]    |                     ^^^^ method not found in `EvaluationTree`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/evaluation_tree/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn args(&self) -> Args;
[INFO] [stdout]    |        ---- the method is available for `EvaluationTree` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Evaluatable` which provides `args` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use crate::mathvis::evaluation_tree::Evaluatable;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `evaluate` found for struct `EvaluationTree` in the current scope
[INFO] [stdout]   --> src/lib.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 20 | let result = tree.evaluate(&args).expect("Should be able to evaluate");
[INFO] [stdout]    |                   ^^^^^^^^ method not found in `EvaluationTree`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/evaluation_tree/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn evaluate(&self, arguments: &Args) -> Result<Self::Res, MissingError>;
[INFO] [stdout]    |        -------- the method is available for `EvaluationTree` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Evaluatable` which provides `evaluate` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 2  + use crate::mathvis::evaluation_tree::Evaluatable;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 71) stdout ----
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:92:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:101:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:112:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     continue 'outer;
[INFO] [stdout]    |              ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:122:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |     continue 'outer;
[INFO] [stdout]    |              ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:143:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |             continue 'outer;
[INFO] [stdout]    |                      ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0426]: use of undeclared label `'outer`
[INFO] [stdout]   --> src/lib.rs:153:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |         continue 'outer;
[INFO] [stdout]    |                  ^^^^^^ undeclared label `'outer`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]  --> src/lib.rs:76:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | input.clear();
[INFO] [stdout]   | ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]  --> src/lib.rs:77:36
[INFO] [stdout]   |
[INFO] [stdout] 9 | if std::io::stdin().read_line(&mut input).unwrap() == 0 {
[INFO] [stdout]   |                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | input.pop(); // pop '\n'
[INFO] [stdout]    | ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:83:40
[INFO] [stdout]    |
[INFO] [stdout] 15 | let tokens = match mathvis::lexer::lex(input.as_str()) {
[INFO] [stdout]    |                                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:132:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     input.clear();
[INFO] [stdout]    |     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:133:40
[INFO] [stdout]    |
[INFO] [stdout] 65 |     if std::io::stdin().read_line(&mut input).unwrap() == 0 {
[INFO] [stdout]    |                                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:136:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     input.pop(); // pop '\n'
[INFO] [stdout]    |     ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `input` in this scope
[INFO] [stdout]   --> src/lib.rs:137:11
[INFO] [stdout]    |
[INFO] [stdout] 69 |     match input.parse() {
[INFO] [stdout]    |           ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:101:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:112:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     continue 'outer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:122:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     continue 'outer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0268]: `continue` outside of a loop
[INFO] [stdout]   --> src/lib.rs:153:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         continue 'outer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ cannot `continue` outside of a loop
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]  --> src/lib.rs:75:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | std::io::stdout().flush().unwrap();
[INFO] [stdout]   |                   ^^^^^ method not found in `Stdout`
[INFO] [stdout]  --> /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1665:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: the method is available for `Stdout` here
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `flush` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 3 + use std::io::Write;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `match` arms have incompatible types
[INFO] [stdout]   --> src/lib.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |   let tokens = match mathvis::lexer::lex(input.as_str()) {
[INFO] [stdout]    |  ______________-
[INFO] [stdout] 16 | |     Ok((left, tokens)) => {
[INFO] [stdout] 17 | |         if !left.is_empty() {
[INFO] [stdout] 18 | |             println!("Info: \"{left}\" was ignored");
[INFO] [stdout] 19 | |         }
[INFO] [stdout] 20 | |         tokens
[INFO] [stdout]    | |         ------ this is found to be of type `Vec<Token>`
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         continue 'outer;
[INFO] [stdout]    | |         ^^^^^^^^^^^^^^^^ expected `Vec<Token>`, found `()`
[INFO] [stdout] 25 | |     }
[INFO] [stdout] 26 | | };
[INFO] [stdout]    | |_- `match` arms have incompatible types
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<Token>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `match` arms have incompatible types
[INFO] [stdout]   --> src/lib.rs:101:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |   let tree = match mathvis::evaluation_tree::EvaluationTree::from_tokens(tokens.as_slice()) {
[INFO] [stdout]    |  ____________-
[INFO] [stdout] 30 | |     Ok(tree) => tree,
[INFO] [stdout]    | |                 ---- this is found to be of type `EvaluationTree`
[INFO] [stdout] 31 | |     Err(err) => {
[INFO] [stdout] 32 | |         eprintln!("Failed to parse tokens: {err}");
[INFO] [stdout] 33 | |         continue 'outer;
[INFO] [stdout]    | |         ^^^^^^^^^^^^^^^^ expected `EvaluationTree`, found `()`
[INFO] [stdout] 34 | |     }
[INFO] [stdout] 35 | | };
[INFO] [stdout]    | |_- `match` arms have incompatible types
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `default_args` in this scope
[INFO] [stdout]   --> src/lib.rs:107:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | args.merge(default_args()); // merge with default args
[INFO] [stdout]    |            ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `flush` found for struct `Stdout` in the current scope
[INFO] [stdout]   --> src/lib.rs:131:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     std::io::stdout().flush().unwrap();
[INFO] [stdout]    |                       ^^^^^ method not found in `Stdout`
[INFO] [stdout]   --> /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1665:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `Stdout` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Write` which provides `flush` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use std::io::Write;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `()` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/lib.rs:157:29
[INFO] [stdout]    |
[INFO] [stdout] 89 | println!("The end result is {res}");
[INFO] [stdout]    |                             ^^^^^ `()` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `()`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 25 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0268, E0277, E0308, E0425, E0426, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0268`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 42)
[INFO] [stdout]     src/lib.rs - (line 71)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ba5dd2779f1c4d1b7618afd678baf5410d0ba5ee777ad97ed0ca62001846d210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba5dd2779f1c4d1b7618afd678baf5410d0ba5ee777ad97ed0ca62001846d210", kill_on_drop: false }`
[INFO] [stdout] ba5dd2779f1c4d1b7618afd678baf5410d0ba5ee777ad97ed0ca62001846d210
