[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/b47521bb9d45247ef7a56b7646c0b5baa6a29f0b against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbool-rus%2Fmath-ast" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bool-rus/math-ast on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "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-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1fabfedafa00666f1e0fcecaf8008acf660fd520ded18d1965a9453015a2a38f
[INFO] running `Command { std: "docker" "start" "-a" "1fabfedafa00666f1e0fcecaf8008acf660fd520ded18d1965a9453015a2a38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fabfedafa00666f1e0fcecaf8008acf660fd520ded18d1965a9453015a2a38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fabfedafa00666f1e0fcecaf8008acf660fd520ded18d1965a9453015a2a38f", kill_on_drop: false }`
[INFO] [stdout] 1fabfedafa00666f1e0fcecaf8008acf660fd520ded18d1965a9453015a2a38f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20600a58ec21295ab5f893ac2683d2670441bae4bf1544ed79b1e08805b1fad7
[INFO] running `Command { std: "docker" "start" "-a" "20600a58ec21295ab5f893ac2683d2670441bae4bf1544ed79b1e08805b1fad7", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling num-traits v0.2.6
[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: `...` 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]     = 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]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: 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: 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: 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: `...` 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]     = 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]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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: 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/tree.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<Function<T>>, Vec<Ast<T>>),
[INFO] [stdout]    |                   ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<dyn Function<T>>, Vec<Ast<T>>),
[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]   |                          ^^^^^^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 | type RawFn<T> = &'static dyn Fn(Vec<T>) -> Option<T>;
[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]    |                   ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Operation(Box<dyn Function<T>>, Vec<Ast<T>>),
[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]   |                          ^^^^^^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 | type RawFn<T> = &'static dyn Fn(Vec<T>) -> Option<T>;
[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]    |                                          ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T:'static + Float + Sized> Into<Box<dyn Function<T>>> for Operand {
[INFO] [stdout]    |                                          +++
[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]    |                          ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn into(self) -> Box<dyn Function<T>> {
[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]    |                                          ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 97 | impl<T:'static + Float + Sized> Into<Box<dyn Function<T>>> for Operand {
[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]    |                                                                       ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<dyn Function<T>>> {
[INFO] [stdout]    |                                                                       +++
[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]    |                                                            ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<S: ToString>(name:S, func: RawFn<T>) -> Box<dyn Function<T>> {
[INFO] [stdout]    |                                                            +++
[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]    |                          ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn into(self) -> Box<dyn Function<T>> {
[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]    |                                                                ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn make_fn<T:'static + Float + Sized>(ch: char) -> Box<dyn Function<T>> {
[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]    |                                                                       ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<dyn Function<T>>> {
[INFO] [stdout]    |                                                                       +++
[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]    |                                                            ^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<S: ToString>(name:S, func: RawFn<T>) -> Box<dyn Function<T>> {
[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: `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: enum `Ast` is never used
[INFO] [stdout]   --> src/parser/tree.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Ast<T: Sized> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Ast` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `calculate` is never used
[INFO] [stdout]   --> src/parser/tree.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T> Ast<T> where T: Sized + Clone {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 18 |     pub fn calculate(&self, params: &HashMap<String, T>) -> Option<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/parser/builder.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct BuilderErr(
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 13 |     Option<Builder>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `BuilderErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser/builder.rs:37:14
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Complete(BB),
[INFO] [stdout]    |     -------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Builder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 37 |     Complete(()),
[INFO] [stdout]    |              ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `sin`, `cos`, `functions`, `simple_err`, `ast`, and `ast_inner` are never used
[INFO] [stdout]   --> src/parser/builder.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Builder {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 43 |     fn sin<T: Float>(args: Vec<T>) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn cos<T: Float>(args: Vec<T>) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn functions<T: 'static + Float + Sized>() -> HashMap<String, Box<Function<T>>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn simple_err<X, S: ToString>(s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |        ^^^^^^^^^^
[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] 81 |     fn ast_inner<T: 'static + Float + Sized>(self) -> Result<Ast<T>, BuilderErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AstFunction` is never constructed
[INFO] [stdout]    --> src/parser/builder.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | struct AstFunction<T: Sized + Debug> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/parser/builder.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | impl<T> AstFunction<T> where T: 'static + Float + Sized + Debug {
[INFO] [stdout]     | --------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 171 |     fn new(desc: Builder, value: Builder) -> Result<Self, BuilderErr> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name`, `args_count`, and `call` are never used
[INFO] [stdout]   --> src/parser/faces.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub trait Function<T: Sized> : Debug {
[INFO] [stdout]    |           -------- methods in this trait
[INFO] [stdout] 8  |     fn name(&self) -> &str;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 9  |     fn args_count(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 10 |     fn call(&self, args: Vec<T>) -> Option<T>;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn simple_err<X, S: ToString>(s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |                                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 62 |         BuilderErr(s.to_string(), None).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn make_err<X, S: ToString>(self, s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |                                 ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 65 |         BuilderErr(s.to_string(), Some(self)).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |       pub fn ast<T: 'static + Float + Sized>(self) -> Result<Ast<T>, BuilderErr> where T: Float {
[INFO] [stdout]    |                                              ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 68 |           Ok(match self {
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 69 | |             Builder::Empty => return Self::simple_err("expression not complete"),
[INFO] [stdout] 70 | |             Builder::Simple(Lexem::Letter(inner)) => match T::from_str_radix(&inner, 10) {
[INFO] [stdout] 71 | |                 Ok(num) => Ast::Constant(num),
[INFO] [stdout] ...  |
[INFO] [stdout] 78 | |             Builder::Complete(inner) => inner.ast_inner()?,
[INFO] [stdout] 79 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |       pub fn process(self, lex: Lexem) -> BuildResult {
[INFO] [stdout]     |                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 109 |           #[cfg(test)] println!("lex: {:?}, b: {:?}", lex, self);
[INFO] [stdout] 110 | /         match (self, lex) {
[INFO] [stdout] 111 | |             (Builder::Empty, lex @ Lexem::Letter(_)) => Builder::Simple(lex),
[INFO] [stdout] 112 | |             (Builder::Empty, Lexem::Open) => Builder::Body(Builder::Empty.into()),
[INFO] [stdout] 113 | |             (a @ Builder::Complete(..), Lexem::Op(op)) |
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             (b, lex) => return b.make_err(format!("Unexpected lexem {:?}", lex)),
[INFO] [stdout] 145 | |         }.into()
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn fun_delegate_inner(name: String, mut v: Vec<Builder>, lex: Lexem) -> BuildResult {
[INFO] [stdout]     |                                         ------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 148 |         let inner = v.pop().unwrap().process(lex)?;
[INFO] [stdout]     |             ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 149 |         v.push(inner);
[INFO] [stdout] 150 |         Ok(Builder::Fun(name, v))
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:158:64
[INFO] [stdout]     |
[INFO] [stdout] 158 |         parse(s).into_iter().fold(Ok(Builder::new()), |b, lex| b?.process(lex))
[INFO] [stdout]     |                                                        -       ^^
[INFO] [stdout]     |                                                        |
[INFO] [stdout]     |                                                        these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/parser/builder.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct BuilderErr(
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 13 |     Option<Builder>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout]    = note: `BuilderErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AstFunction` is never constructed
[INFO] [stdout]    --> src/parser/builder.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | struct AstFunction<T: Sized + Debug> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/parser/builder.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 170 | impl<T> AstFunction<T> where T: 'static + Float + Sized + Debug {
[INFO] [stdout]     | --------------------------------------------------------------- associated function in this implementation
[INFO] [stdout] 171 |     fn new(desc: Builder, value: Builder) -> Result<Self, BuilderErr> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `args_count` are never used
[INFO] [stdout]  --> src/parser/faces.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Function<T: Sized> : Debug {
[INFO] [stdout]   |           -------- methods in this trait
[INFO] [stdout] 8 |     fn name(&self) -> &str;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 9 |     fn args_count(&self) -> usize;
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math-ast` (bin "math-ast") due to 7 previous errors; 29 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/tree.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn plus<T: 'static + Float>(a: Ast<T>, b: Ast<T>) -> Ast<T> {
[INFO] [stdout]    |                                 ---------  --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 43 |         Ast::Operation(Operand::make_fn::<T>('+'), vec![a, b])
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/tree.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn minus<T: 'static + Float>(a: Ast<T>, b: Ast<T>) -> Ast<T> where T: Float {
[INFO] [stdout]    |                                  ---------  --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 47 |         Ast::Operation(Operand::make_fn::<T>('-'), vec![a, b])
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/tree.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn multiple<T: 'static + Float>(a: Ast<T>, b: Ast<T>) -> Ast<T> where T: Float {
[INFO] [stdout]    |                                     ---------  --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 51 |         Ast::Operation(Operand::make_fn::<T>('*'), vec![a, b])
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/tree.rs:55:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn divide<T: 'static + Float>(a: Ast<T>, b: Ast<T>) -> Ast<T> where T: Float {
[INFO] [stdout]    |                                   ---------  --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 55 |         Ast::Operation(Operand::make_fn::<T>('/'), vec![a, b])
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn simple_err<X, S: ToString>(s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |                                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 62 |         BuilderErr(s.to_string(), None).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn make_err<X, S: ToString>(self, s: S) -> Result<X, BuilderErr> {
[INFO] [stdout]    |                                 ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 65 |         BuilderErr(s.to_string(), Some(self)).into()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/parser/builder.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |       pub fn ast<T: 'static + Float + Sized>(self) -> Result<Ast<T>, BuilderErr> where T: Float {
[INFO] [stdout]    |                                              ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 68 |           Ok(match self {
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 69 | |             Builder::Empty => return Self::simple_err("expression not complete"),
[INFO] [stdout] 70 | |             Builder::Simple(Lexem::Letter(inner)) => match T::from_str_radix(&inner, 10) {
[INFO] [stdout] 71 | |                 Ok(num) => Ast::Constant(num),
[INFO] [stdout] ...  |
[INFO] [stdout] 78 | |             Builder::Complete(inner) => inner.ast_inner()?,
[INFO] [stdout] 79 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |       pub fn process(self, lex: Lexem) -> BuildResult {
[INFO] [stdout]     |                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 109 |           #[cfg(test)] println!("lex: {:?}, b: {:?}", lex, self);
[INFO] [stdout] 110 | /         match (self, lex) {
[INFO] [stdout] 111 | |             (Builder::Empty, lex @ Lexem::Letter(_)) => Builder::Simple(lex),
[INFO] [stdout] 112 | |             (Builder::Empty, Lexem::Open) => Builder::Body(Builder::Empty.into()),
[INFO] [stdout] 113 | |             (a @ Builder::Complete(..), Lexem::Op(op)) |
[INFO] [stdout] ...   |
[INFO] [stdout] 144 | |             (b, lex) => return b.make_err(format!("Unexpected lexem {:?}", lex)),
[INFO] [stdout] 145 | |         }.into()
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn fun_delegate_inner(name: String, mut v: Vec<Builder>, lex: Lexem) -> BuildResult {
[INFO] [stdout]     |                                         ------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 148 |         let inner = v.pop().unwrap().process(lex)?;
[INFO] [stdout]     |             ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 149 |         v.push(inner);
[INFO] [stdout] 150 |         Ok(Builder::Fun(name, v))
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/parser/builder.rs:158:64
[INFO] [stdout]     |
[INFO] [stdout] 158 |         parse(s).into_iter().fold(Ok(Builder::new()), |b, lex| b?.process(lex))
[INFO] [stdout]     |                                                        -       ^^
[INFO] [stdout]     |                                                        |
[INFO] [stdout]     |                                                        these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math-ast` (bin "math-ast" test) due to 11 previous errors; 30 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "20600a58ec21295ab5f893ac2683d2670441bae4bf1544ed79b1e08805b1fad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20600a58ec21295ab5f893ac2683d2670441bae4bf1544ed79b1e08805b1fad7", kill_on_drop: false }`
[INFO] [stdout] 20600a58ec21295ab5f893ac2683d2670441bae4bf1544ed79b1e08805b1fad7