[INFO] fetching crate xxcalc 0.2.1...
[INFO] testing xxcalc-0.2.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate xxcalc 0.2.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate xxcalc 0.2.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xxcalc 0.2.1
[INFO] finished tweaking crates.io crate xxcalc 0.2.1
[INFO] tweaked toml for crates.io crate xxcalc 0.2.1 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb8c46e8a0c5eb736bdd71b041c2a682c048a1d06e64d89bccd7bf10ad41e655
[INFO] running `Command { std: "docker" "start" "-a" "cb8c46e8a0c5eb736bdd71b041c2a682c048a1d06e64d89bccd7bf10ad41e655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb8c46e8a0c5eb736bdd71b041c2a682c048a1d06e64d89bccd7bf10ad41e655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb8c46e8a0c5eb736bdd71b041c2a682c048a1d06e64d89bccd7bf10ad41e655", kill_on_drop: false }`
[INFO] [stdout] cb8c46e8a0c5eb736bdd71b041c2a682c048a1d06e64d89bccd7bf10ad41e655
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67f9c728e59c7cff9059fa67632ab67d9d6c0eb62a5fe25d178b91fb567b8304
[INFO] running `Command { std: "docker" "start" "-a" "67f9c728e59c7cff9059fa67632ab67d9d6c0eb62a5fe25d178b91fb567b8304", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling xxcalc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `tokenize`
[INFO] [stdout]    --> src/tokenizer.rs:267:14
[INFO] [stdout]     |
[INFO] [stdout] 267 | macro_rules! tokenize {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `tokenize_ref`
[INFO] [stdout]    --> src/tokenizer.rs:271:14
[INFO] [stdout]     |
[INFO] [stdout] 271 | macro_rules! tokenize_ref {
[INFO] [stdout]     |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |           let result = try!(self.call_function(&x.to_string(), position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:261:24
[INFO] [stdout]     |
[INFO] [stdout] 261 |           let result = try!(self.call_function(&x, position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let parsed_tokens = try!(parser.process(tokens));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let evaluated = try!(evaluator.process(parsed_tokens));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:29
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:56
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:280:29
[INFO] [stdout]     |
[INFO] [stdout] 280 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log10()))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:302:21
[INFO] [stdout]     |
[INFO] [stdout] 302 |     Ok(args[0].bind(try!(args[1].as_f64())))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/evaluator.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 - pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout] 15 + pub type FunctionHandle = Box<dyn Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     self + &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 416 |     let _ = self + &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:500:5
[INFO] [stdout]     |
[INFO] [stdout] 500 |     self - &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 500 |     let _ = self - &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 596 |     self * &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 596 |     let _ = self * &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `mul` that must be used
[INFO] [stdout]    --> src/polynomial.rs:618:5
[INFO] [stdout]     |
[INFO] [stdout] 618 |     self.mul(other);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "67f9c728e59c7cff9059fa67632ab67d9d6c0eb62a5fe25d178b91fb567b8304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f9c728e59c7cff9059fa67632ab67d9d6c0eb62a5fe25d178b91fb567b8304", kill_on_drop: false }`
[INFO] [stdout] 67f9c728e59c7cff9059fa67632ab67d9d6c0eb62a5fe25d178b91fb567b8304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b90d27719417ce1d9ee7a84b868c3ba090e6a47be75d9ee8c6dbd0e87943771
[INFO] running `Command { std: "docker" "start" "-a" "5b90d27719417ce1d9ee7a84b868c3ba090e6a47be75d9ee8c6dbd0e87943771", kill_on_drop: false }`
[INFO] [stderr]    Compiling xxcalc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `tokenize`
[INFO] [stdout]    --> src/tokenizer.rs:267:14
[INFO] [stdout]     |
[INFO] [stdout] 267 | macro_rules! tokenize {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `tokenize_ref`
[INFO] [stdout]    --> src/tokenizer.rs:271:14
[INFO] [stdout]     |
[INFO] [stdout] 271 | macro_rules! tokenize_ref {
[INFO] [stdout]     |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |           let result = try!(self.call_function(&x.to_string(), position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:261:24
[INFO] [stdout]     |
[INFO] [stdout] 261 |           let result = try!(self.call_function(&x, position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let parsed_tokens = try!(parser.process(tokens));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let evaluated = try!(evaluator.process(parsed_tokens));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:29
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:56
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:280:29
[INFO] [stdout]     |
[INFO] [stdout] 280 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log10()))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:302:21
[INFO] [stdout]     |
[INFO] [stdout] 302 |     Ok(args[0].bind(try!(args[1].as_f64())))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/evaluator.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 - pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout] 15 + pub type FunctionHandle = Box<dyn Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     self + &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 416 |     let _ = self + &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:500:5
[INFO] [stdout]     |
[INFO] [stdout] 500 |     self - &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 500 |     let _ = self - &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 596 |     self * &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 596 |     let _ = self * &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `mul` that must be used
[INFO] [stdout]    --> src/polynomial.rs:618:5
[INFO] [stdout]     |
[INFO] [stdout] 618 |     self.mul(other);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `tokenize`
[INFO] [stdout]    --> src/tokenizer.rs:267:14
[INFO] [stdout]     |
[INFO] [stdout] 267 | macro_rules! tokenize {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:250:24
[INFO] [stdout]     |
[INFO] [stdout] 250 |           let result = try!(self.call_function(&x.to_string(), position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:261:24
[INFO] [stdout]     |
[INFO] [stdout] 261 |           let result = try!(self.call_function(&x, position, &mut stack));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:559:31
[INFO] [stdout]     |
[INFO] [stdout] 559 |       Ok(Polynomial::constant(try!(args[0].clone().as_f64()) % try!(args[1].clone().as_f64())))
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/evaluator.rs:559:64
[INFO] [stdout]     |
[INFO] [stdout] 559 |       Ok(Polynomial::constant(try!(args[0].clone().as_f64()) % try!(args[1].clone().as_f64())))
[INFO] [stdout]     |                                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let parsed_tokens = try!(parser.process(tokens));
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/calculator.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let evaluated = try!(evaluator.process(parsed_tokens));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:29
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:261:56
[INFO] [stdout]     |
[INFO] [stdout] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:280:29
[INFO] [stdout]     |
[INFO] [stdout] 280 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log10()))
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/polynomial_calculator.rs:302:21
[INFO] [stdout]     |
[INFO] [stdout] 302 |     Ok(args[0].bind(try!(args[1].as_f64())))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/evaluator.rs:15:31
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 - pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout] 15 + pub type FunctionHandle = Box<dyn Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     self + &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 416 |     let _ = self + &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:500:5
[INFO] [stdout]     |
[INFO] [stdout] 500 |     self - &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 500 |     let _ = self - &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/polynomial.rs:596:5
[INFO] [stdout]     |
[INFO] [stdout] 596 |     self * &other;
[INFO] [stdout]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 596 |     let _ = self * &other;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `mul` that must be used
[INFO] [stdout]    --> src/polynomial.rs:618:5
[INFO] [stdout]     |
[INFO] [stdout] 618 |     self.mul(other);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "5b90d27719417ce1d9ee7a84b868c3ba090e6a47be75d9ee8c6dbd0e87943771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b90d27719417ce1d9ee7a84b868c3ba090e6a47be75d9ee8c6dbd0e87943771", kill_on_drop: false }`
[INFO] [stdout] 5b90d27719417ce1d9ee7a84b868c3ba090e6a47be75d9ee8c6dbd0e87943771
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3483ceefeafaaab60da7bd1299f57b911eebf701641eba2eead478552f1ecc0f
[INFO] running `Command { std: "docker" "start" "-a" "3483ceefeafaaab60da7bd1299f57b911eebf701641eba2eead478552f1ecc0f", kill_on_drop: false }`
[INFO] [stderr] warning: unused macro definition: `tokenize`
[INFO] [stderr]    --> src/tokenizer.rs:267:14
[INFO] [stderr]     |
[INFO] [stderr] 267 | macro_rules! tokenize {
[INFO] [stderr]     |              ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition: `tokenize_ref`
[INFO] [stderr]    --> src/tokenizer.rs:271:14
[INFO] [stderr]     |
[INFO] [stderr] 271 | macro_rules! tokenize_ref {
[INFO] [stderr]     |              ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/evaluator.rs:250:24
[INFO] [stderr]     |
[INFO] [stderr] 250 |           let result = try!(self.call_function(&x.to_string(), position, &mut stack));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/evaluator.rs:261:24
[INFO] [stderr]     |
[INFO] [stderr] 261 |           let result = try!(self.call_function(&x, position, &mut stack));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/calculator.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let parsed_tokens = try!(parser.process(tokens));
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/calculator.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let evaluated = try!(evaluator.process(parsed_tokens));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/polynomial_calculator.rs:261:29
[INFO] [stderr]     |
[INFO] [stderr] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/polynomial_calculator.rs:261:56
[INFO] [stderr]     |
[INFO] [stderr] 261 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log(try!(args[1].as_f64()))))
[INFO] [stderr]     |                                                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/polynomial_calculator.rs:280:29
[INFO] [stderr]     |
[INFO] [stderr] 280 |     Ok(Polynomial::constant(try!(args[0].as_f64()).log10()))
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/polynomial_calculator.rs:302:21
[INFO] [stderr]     |
[INFO] [stderr] 302 |     Ok(args[0].bind(try!(args[1].as_f64())))
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/evaluator.rs:15:31
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 15 - pub type FunctionHandle = Box<Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stderr] 15 + pub type FunctionHandle = Box<dyn Fn(Vec<Polynomial>) -> Result<Polynomial, EvaluationError>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:416:5
[INFO] [stderr]     |
[INFO] [stderr] 416 |     self + &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 416 |     let _ = self + &other;
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:500:5
[INFO] [stderr]     |
[INFO] [stderr] 500 |     self - &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 500 |     let _ = self - &other;
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/polynomial.rs:596:5
[INFO] [stderr]     |
[INFO] [stderr] 596 |     self * &other;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 596 |     let _ = self * &other;
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `mul` that must be used
[INFO] [stderr]    --> src/polynomial.rs:618:5
[INFO] [stderr]     |
[INFO] [stderr] 618 |     self.mul(other);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `xxcalc` (lib) generated 15 warnings
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/evaluator.rs:559:31
[INFO] [stderr]     |
[INFO] [stderr] 559 |       Ok(Polynomial::constant(try!(args[0].clone().as_f64()) % try!(args[1].clone().as_f64())))
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/evaluator.rs:559:64
[INFO] [stderr]     |
[INFO] [stderr] 559 |       Ok(Polynomial::constant(try!(args[0].clone().as_f64()) % try!(args[1].clone().as_f64())))
[INFO] [stderr]     |                                                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `xxcalc` (lib test) generated 16 warnings (14 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/xxcalc-4ed54435cf6651da)
[INFO] [stdout] 
[INFO] [stdout] running 48 tests
[INFO] [stdout] test evaluator::tests::test_constants ... ok
[INFO] [stdout] test evaluator::tests::test_functions ... ok
[INFO] [stdout] test evaluator::tests::test_multiple_expression ... ok
[INFO] [stdout] test evaluator::tests::test_functions_no_arguments ... ok
[INFO] [stdout] test evaluator::tests::test_functions_multiple_arguments ... ok
[INFO] [stdout] test evaluator::tests::test_symbol_registration ... ok
[INFO] [stdout] test evaluator::tests::test_operators ... ok
[INFO] [stdout] test evaluator::tests::test_polynomials ... ok
[INFO] [stdout] test linear_solver::tests::test_position_agnostic ... ok
[INFO] [stdout] test parser::tests::test_arguments ... ok
[INFO] [stdout] test linear_solver::tests::test_special_cases ... ok
[INFO] [stdout] test parser::tests::test_empty_expression ... ok
[INFO] [stdout] test parser::tests::test_brackets ... ok
[INFO] [stdout] test parser::tests::test_missing_brackets ... ok
[INFO] [stdout] test parser::tests::test_operator_registration ... ok
[INFO] [stdout] test parser::tests::test_precedence_and_associativity ... ok
[INFO] [stdout] test parser::tests::test_symbols ... ok
[INFO] [stdout] test polynomial::tests::test_assign_add ... ok
[INFO] [stdout] test parser::tests::test_unknown_tokens ... ok
[INFO] [stdout] test polynomial::tests::test_assign_div ... ok
[INFO] [stdout] test polynomial::tests::test_assign_sub ... ok
[INFO] [stdout] test polynomial::tests::test_bind ... ok
[INFO] [stdout] test polynomial::tests::test_assign_mul ... ok
[INFO] [stdout] test polynomial::tests::test_casting ... ok
[INFO] [stdout] test polynomial::tests::test_equality ... ok
[INFO] [stdout] test polynomial::tests::test_indexing ... ok
[INFO] [stdout] test polynomial::tests::test_degree ... ok
[INFO] [stdout] test polynomial::tests::test_string_conversion ... ok
[INFO] [stdout] test polynomial::tests::test_initialization ... ok
[INFO] [stdout] test linear_solver::tests::test_restrictions ... ok
[INFO] [stdout] test polynomial::tests::test_operations ... ok
[INFO] [stdout] test linear_solver::tests::test_general ... ok
[INFO] [stdout] test polynomial_calculator::tests::test_constants ... ok
[INFO] [stdout] test polynomial_calculator::tests::test_functions ... ok
[INFO] [stdout] test polynomial_calculator::tests::test_general ... ok
[INFO] [stdout] test tokenizer::tests::test_brackets ... ok
[INFO] [stdout] test tokenizer::tests::test_expressions ... ok
[INFO] [stdout] test tokenizer::tests::test_identifiers ... ok
[INFO] [stdout] test tokenizer::tests::test_implicit_multiplication ... ok
[INFO] [stdout] test polynomial_calculator::tests::test_operations ... ok
[INFO] [stdout] test tokenizer::tests::test_numbers ... ok
[INFO] [stdout] test tokenizer::tests::test_numbers_scientific ... ok
[INFO] [stdout] test polynomial_calculator::tests::test_polynomials ... ok
[INFO] [stdout] test tokenizer::tests::test_numbers_signed ... ok
[INFO] [stdout] test tokenizer::tests::test_operators ... ok
[INFO] [stdout] test polynomial::tests::test_assign_div_wrong_degree - should panic ... ok
[INFO] [stdout] test polynomial::tests::test_assign_div_zero_division - should panic ... ok
[INFO] [stdout] test polynomial::tests::test_indexing_fail - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 48 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/xxcalc-87511174d4d90b43)
[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]    Doc-tests xxcalc
[INFO] [stdout] 
[INFO] [stdout] running 63 tests
[INFO] [stdout] test src/polynomial.rs - polynomial::Polynomial (line 19) ... FAILED
[INFO] [stdout] test src/polynomial.rs - polynomial::Polynomial::degree (line 133) ... FAILED
[INFO] [stdout] test src/polynomial.rs - polynomial::Polynomial::new (line 54) ... FAILED
[INFO] [stdout] test src/polynomial.rs - polynomial::Polynomial::zero (line 113) ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name xxcalc --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-a0b2edc46b1c350a.rlib --extern xxcalc=/opt/rustwide/target/debug/deps/libxxcalc-d0cd8db41f132c59.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3483ceefeafaaab60da7bd1299f57b911eebf701641eba2eead478552f1ecc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3483ceefeafaaab60da7bd1299f57b911eebf701641eba2eead478552f1ecc0f", kill_on_drop: false }`
[INFO] [stdout] 3483ceefeafaaab60da7bd1299f57b911eebf701641eba2eead478552f1ecc0f