[INFO] cloning repository https://github.com/bool-rus/math-ast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bool-rus/math-ast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbool-rus%2Fmath-ast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbool-rus%2Fmath-ast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b47521bb9d45247ef7a56b7646c0b5baa6a29f0b
[INFO] checking bool-rus/math-ast against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbool-rus%2Fmath-ast" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bool-rus/math-ast on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bool-rus/math-ast
[INFO] finished tweaking git repo https://github.com/bool-rus/math-ast
[INFO] tweaked toml for git repo https://github.com/bool-rus/math-ast written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/bool-rus/math-ast already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f74ee5e45c5187c663cd9cabb0aed68021afd05708805f4fbb3167c3d7a63f0
[INFO] running `Command { std: "docker" "start" "-a" "0f74ee5e45c5187c663cd9cabb0aed68021afd05708805f4fbb3167c3d7a63f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f74ee5e45c5187c663cd9cabb0aed68021afd05708805f4fbb3167c3d7a63f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f74ee5e45c5187c663cd9cabb0aed68021afd05708805f4fbb3167c3d7a63f0", kill_on_drop: false }`
[INFO] [stdout] 0f74ee5e45c5187c663cd9cabb0aed68021afd05708805f4fbb3167c3d7a63f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10f6b8e0dc3d8c5a6d83d48bf8f6e41334c3b806a6f2a75d19c538cb4017fc5d
[INFO] running `Command { std: "docker" "start" "-a" "10f6b8e0dc3d8c5a6d83d48bf8f6e41334c3b806a6f2a75d19c538cb4017fc5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking math-ast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/parser/lexem.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Formatter`
[INFO] [stdout]  --> src/parser/lexem.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/parser/lexem.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Num`
[INFO] [stdout]  --> src/parser/lexem.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::num::Num;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Integer`
[INFO] [stdout]  --> src/parser/lexem.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::num::Integer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/lexem.rs:51:64
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn make_fn<T:'static + Float + Sized>(ch: char) -> Box<Function<T>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/lexem.rs:97:42
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T:'static + Float + Sized> Into<Box<Function<T>>> for Operand {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/lexem.rs:98:26
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn into(self) -> Box<Function<T>> {
[INFO] [stdout]    |                          ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:28
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:40
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:52
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Float`
[INFO] [stdout]  --> src/parser/tree.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/tree.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<Function<T>>, Vec<Ast<T>>),
[INFO] [stdout]    |                   ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser::faces::Function`
[INFO] [stdout]   --> src/parser/tree.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     use parser::faces::Function;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/builder.rs:54:71
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<Function<T>>> {
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser::builder::BuildResult`
[INFO] [stdout]    --> src/parser/builder.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     use parser::builder::BuildResult;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]    --> src/parser/builder.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |     use std::fmt::Debug;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]    --> src/parser/builder.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |     use std::fmt::Display;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/parser/faces.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Float`
[INFO] [stdout]  --> src/parser/faces.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/parser/faces.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | type RawFn<T> = &'static Fn(Vec<T>) -> Option<T>;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<T>) -> Option<T>`
[INFO] [stdout]   |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/faces.rs:38:60
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<S: ToString>(name:S, func: RawFn<T>) -> Box<Function<T>> {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/parser/lexem.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Formatter`
[INFO] [stdout]  --> src/parser/lexem.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/parser/lexem.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Num`
[INFO] [stdout]  --> src/parser/lexem.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::num::Num;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Integer`
[INFO] [stdout]  --> src/parser/lexem.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::num::Integer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/lexem.rs:97:42
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T:'static + Float + Sized> Into<Box<Function<T>>> for Operand {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/lexem.rs:98:26
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn into(self) -> Box<Function<T>> {
[INFO] [stdout]    |                          ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:28
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:40
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parser/lexem.rs:121:52
[INFO] [stdout]     |
[INFO] [stdout] 121 |             '0' | '.' | '1'...'9' | 'a'...'z' | 'A'...'Z' => State::Letter,
[INFO] [stdout]     |                                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Float`
[INFO] [stdout]  --> src/parser/tree.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/tree.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<Function<T>>, Vec<Ast<T>>),
[INFO] [stdout]    |                   ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/builder.rs:54:71
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<Function<T>>> {
[INFO] [stdout]    |                                                                       ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/parser/faces.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::num::Float`
[INFO] [stdout]  --> src/parser/faces.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::num::Float;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/parser/faces.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | type RawFn<T> = &'static Fn(Vec<T>) -> Option<T>;
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<T>) -> Option<T>`
[INFO] [stdout]   |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/faces.rs:38:60
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<S: ToString>(name:S, func: RawFn<T>) -> Box<Function<T>> {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^ help: use `dyn`: `dyn Function<T>`
[INFO] [stdout]    |
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Add`
[INFO] [stdout]  --> src/parser/lexem.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sub`
[INFO] [stdout]  --> src/parser/lexem.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mul`
[INFO] [stdout]  --> src/parser/lexem.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Div`
[INFO] [stdout]  --> src/parser/lexem.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Add`
[INFO] [stdout]  --> src/parser/lexem.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sub`
[INFO] [stdout]  --> src/parser/lexem.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mul`
[INFO] [stdout]  --> src/parser/lexem.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Div`
[INFO] [stdout]  --> src/parser/lexem.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::{Add, Sub, Mul, Div};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Constant`
[INFO] [stdout]   --> src/parser/tree.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Constant(T),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Variable`
[INFO] [stdout]   --> src/parser/tree.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Variable(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Operation`
[INFO] [stdout]   --> src/parser/tree.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<Function<T>>, Vec<Ast<T>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sin`
[INFO] [stdout]   --> src/parser/builder.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn sin<T: Float>(args: Vec<T>) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cos`
[INFO] [stdout]   --> src/parser/builder.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn cos<T: Float>(args: Vec<T>) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `functions`
[INFO] [stdout]   --> src/parser/builder.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<Function<T>>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `simple_err`
[INFO] [stdout]   --> src/parser/builder.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn simple_err<X, S: ToString>(s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ast`
[INFO] [stdout]   --> src/parser/builder.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn ast<T: 'static + Float + Sized>(self) -> Result<Ast<T>, BuilderErr> where T: Float {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ast_inner`
[INFO] [stdout]   --> src/parser/builder.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn ast_inner<T: 'static + Float + Sized>(self) -> Result<Ast<T>, BuilderErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/parser/builder.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn new(desc: Builder, value: Builder) -> Result<Self, BuilderErr> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/parser/builder.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn new(desc: Builder, value: Builder) -> Result<Self, BuilderErr> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "10f6b8e0dc3d8c5a6d83d48bf8f6e41334c3b806a6f2a75d19c538cb4017fc5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f6b8e0dc3d8c5a6d83d48bf8f6e41334c3b806a6f2a75d19c538cb4017fc5d", kill_on_drop: false }`
[INFO] [stdout] 10f6b8e0dc3d8c5a6d83d48bf8f6e41334c3b806a6f2a75d19c538cb4017fc5d