[INFO] fetching crate exxact 0.1.0...
[INFO] checking exxact-0.1.0 against master#3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777 for pr-132289
[INFO] extracting crate exxact 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate exxact 0.1.0 on toolchain 3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exxact 0.1.0
[INFO] finished tweaking crates.io crate exxact 0.1.0
[INFO] tweaked toml for crates.io crate exxact 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 packages to latest compatible versions
[INFO] [stderr]       Adding fraction v0.14.0 (available: v0.15.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusty-fork v0.3.0
[INFO] [stderr]   Downloaded appendlist v1.4.0
[INFO] [stderr]   Downloaded ordered-float v4.4.0
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[INFO] [stderr]   Downloaded proptest v1.5.0
[INFO] [stderr]   Downloaded fraction v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2670effd506db4a8261a7d6ea59e5105ed991b36d29e8f2dcdceb31f0b02b4db
[INFO] running `Command { std: "docker" "start" "-a" "2670effd506db4a8261a7d6ea59e5105ed991b36d29e8f2dcdceb31f0b02b4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2670effd506db4a8261a7d6ea59e5105ed991b36d29e8f2dcdceb31f0b02b4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2670effd506db4a8261a7d6ea59e5105ed991b36d29e8f2dcdceb31f0b02b4db", kill_on_drop: false }`
[INFO] [stdout] 2670effd506db4a8261a7d6ea59e5105ed991b36d29e8f2dcdceb31f0b02b4db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39cd3993a930677aaa8dd1f6939d202a45dcb423ebc9ee2ebf9c39da5fd661ae
[INFO] running `Command { std: "docker" "start" "-a" "39cd3993a930677aaa8dd1f6939d202a45dcb423ebc9ee2ebf9c39da5fd661ae", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking appendlist v1.4.0
[INFO] [stderr]     Checking lyn v0.1.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ordered-float v4.4.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tempfile v3.13.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.5.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking prime_factorization v1.0.4
[INFO] [stderr]     Checking fraction v0.14.0
[INFO] [stderr]     Checking exxact v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `svec::*`
[INFO] [stdout]  --> src/expr_rc/from/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use svec::*;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `add::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use add::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use mul::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul_assign::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use mul_assign::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::ParseDisplay`
[INFO] [stdout]  --> src/expr_rc/structs/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     io::ParseDisplay
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_display::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use print_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parse_display::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use parse_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_debug::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use print_debug::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::*`
[INFO] [stdout]   --> src/expr_rc/mod.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub use ops::*;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add` and `Mul`
[INFO] [stdout]   --> src/expr_field/mod.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Mul,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `hash::Hash`, and `ops::Deref`
[INFO] [stdout]   --> src/expr_field/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Display
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |   cmp::Ordering, hash::Hash, ops::Deref
[INFO] [stdout]    |                  ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> src/expr_field/structs/mod.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{hash::Hash, ops::{Deref, DerefMut}};
[INFO] [stdout]   |                             ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::Ref`
[INFO] [stdout]  --> src/expr_field/structs/sum.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   cell::Ref,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `F`
[INFO] [stdout]   --> src/expr_field/structs/sum.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   F,
[INFO] [stdout]    |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `svec_powi` and `svecs_mul`
[INFO] [stdout]   --> src/expr_field/structs/type_field.rs:12:70
[INFO] [stdout]    |
[INFO] [stdout] 12 |     }, PVec, io::parse_display::{Scanner, pd_expr}, simplify::{sum::{svecs_mul, svec_mul, svec_powi}, prod::distribute_prods}
[INFO] [stdout]    |                                                                      ^^^^^^^^^            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `string_expression::*`
[INFO] [stdout]   --> src/expr_field/structs/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use string_expression::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Integer`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::Integer;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PrimInt`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::{Zero, PrimInt};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `F`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   F,
[INFO] [stdout]   |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `char::*`
[INFO] [stdout]  --> src/expr_field/io/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use char::*;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_display::*`
[INFO] [stdout]  --> src/expr_field/io/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use print_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> src/expr_field/io/parse_display.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |   ops::{Deref, DerefMut},
[INFO] [stdout]   |         ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `add::*`
[INFO] [stdout]  --> src/expr_field/ops/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use add::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul::*`
[INFO] [stdout]  --> src/expr_field/ops/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use mul::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::*`
[INFO] [stdout]   --> src/expr_field/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub use ops::*;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/expr_field/mod.rs:241:43
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait FieldTrait<'a>:
[INFO] [stdout]     |                      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 241 |   fn get_sum(r: FieldRef<'a, Self>) -> Ref<Sum<'a, Self>>;
[INFO] [stdout]     |                                           ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/expr_field/mod.rs:242:44
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait FieldTrait<'a>:
[INFO] [stdout]     |                      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 242 |   fn get_prod(r: FieldRef<'a, Self>) -> Ref<Prod<'a, Self>>;
[INFO] [stdout]     |                                            ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lyn::Scanner as Sc`
[INFO] [stdout]  --> src/io_traits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lyn::Scanner as Sc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `svec::*`
[INFO] [stdout]  --> src/expr_rc/from/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use svec::*;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `add::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use add::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use mul::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul_assign::*`
[INFO] [stdout]  --> src/expr_rc/ops/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use mul_assign::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_display::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use print_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parse_display::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use parse_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_debug::*`
[INFO] [stdout]  --> src/expr_rc/io/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use print_debug::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::*`
[INFO] [stdout]   --> src/expr_rc/mod.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub use ops::*;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Add` and `Mul`
[INFO] [stdout]   --> src/expr_field/mod.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Mul,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `hash::Hash`, and `ops::Deref`
[INFO] [stdout]   --> src/expr_field/mod.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Display
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |   cmp::Ordering, hash::Hash, ops::Deref
[INFO] [stdout]    |                  ^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> src/expr_field/structs/mod.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{hash::Hash, ops::{Deref, DerefMut}};
[INFO] [stdout]   |                             ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::Ref`
[INFO] [stdout]  --> src/expr_field/structs/sum.rs:2:3
[INFO] [stdout]   |
[INFO] [stdout] 2 |   cell::Ref,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `F`
[INFO] [stdout]   --> src/expr_field/structs/sum.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   F,
[INFO] [stdout]    |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `svec_powi` and `svecs_mul`
[INFO] [stdout]   --> src/expr_field/structs/type_field.rs:12:70
[INFO] [stdout]    |
[INFO] [stdout] 12 |     }, PVec, io::parse_display::{Scanner, pd_expr}, simplify::{sum::{svecs_mul, svec_mul, svec_powi}, prod::distribute_prods}
[INFO] [stdout]    |                                                                      ^^^^^^^^^            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `string_expression::*`
[INFO] [stdout]   --> src/expr_field/structs/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use string_expression::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Integer`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num::Integer;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PrimInt`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num_traits::{Zero, PrimInt};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `F`
[INFO] [stdout]  --> src/expr_field/simplify/sum.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   F,
[INFO] [stdout]   |   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `char::*`
[INFO] [stdout]  --> src/expr_field/io/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use char::*;
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `print_display::*`
[INFO] [stdout]  --> src/expr_field/io/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use print_display::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut` and `Deref`
[INFO] [stdout]  --> src/expr_field/io/parse_display.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |   ops::{Deref, DerefMut},
[INFO] [stdout]   |         ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Not`
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:255:7
[INFO] [stdout]     |
[INFO] [stdout] 255 |   use std::ops::Not;
[INFO] [stdout]     |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::Zero`
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 | use num_traits::Zero;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `add::*`
[INFO] [stdout]  --> src/expr_field/ops/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use add::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul::*`
[INFO] [stdout]  --> src/expr_field/ops/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use mul::*;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::*`
[INFO] [stdout]   --> src/expr_field/mod.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub use ops::*;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/expr_field/mod.rs:241:43
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait FieldTrait<'a>:
[INFO] [stdout]     |                      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 241 |   fn get_sum(r: FieldRef<'a, Self>) -> Ref<Sum<'a, Self>>;
[INFO] [stdout]     |                                           ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/expr_field/mod.rs:242:44
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait FieldTrait<'a>:
[INFO] [stdout]     |                      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 242 |   fn get_prod(r: FieldRef<'a, Self>) -> Ref<Prod<'a, Self>>;
[INFO] [stdout]     |                                            ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `F` and `One`
[INFO] [stdout]    --> src/expr_field/mod.rs:443:15
[INFO] [stdout]     |
[INFO] [stdout] 443 |   use crate::{F, One};
[INFO] [stdout]     |               ^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]    --> src/expr_field/mod.rs:444:15
[INFO] [stdout]     |
[INFO] [stdout] 444 |   use super::{Expr, structs::type_field::{TypeField, TypeExpr}, FieldTrait};
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lyn::Scanner as Sc`
[INFO] [stdout]  --> src/io_traits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lyn::Scanner as Sc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 |       (_,_) => {
[INFO] [stdout]     |       ^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 25  |       (Expr::Val(a), Expr::Val(b)) => {
[INFO] [stdout]     |       ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 29  |       (Expr::Val(v), Expr::Sum(s)) => {
[INFO] [stdout]     |       ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 37  |       (Expr::Val(v), _) => {
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 41  |       (_, Expr::Val(_)) => {
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |       (_,_) => {
[INFO] [stdout]     |       ^^^^^ ...and 13 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 |       (Expr::Sum(s), Expr::Prod(p)) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 |       (Expr::Sum(s), Expr::Prod(p)) => {
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:110:18
[INFO] [stdout]     |
[INFO] [stdout] 110 |       (Expr::Sum(sum), Expr::Sqrt(sqrt)) => {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sqrt`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |       (Expr::Sum(sum), Expr::Sqrt(sqrt)) => {
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_sqrt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:135:33
[INFO] [stdout]     |
[INFO] [stdout] 135 |       (Expr::Prod(p),Expr::Sqrt(s)) => {
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:138:16
[INFO] [stdout]     |
[INFO] [stdout] 138 |           Some(i) => {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 153 |       (Expr::Sqrt(a), Expr::Sqrt(b)) => {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:153:34
[INFO] [stdout]     |
[INFO] [stdout] 153 |       (Expr::Sqrt(a), Expr::Sqrt(b)) => {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/expr_field/simplify/prod.rs:64:52
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn distribute_prods<'a, Field: FieldTrait<'a>>(mut v: PVec<'a, Field>) -> (SVec<'a, Field>, PVec<'a, Field>) {
[INFO] [stdout]    |                                                    ----^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/expr_field/io/ascii.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |       Expr::Fn(r) => {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/expr_field/ops/mul.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut v: Vec<_>;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]    --> src/expr_field/mod.rs:345:18
[INFO] [stdout]     |
[INFO] [stdout] 345 |       (Expr::Sum(r1),Expr::Prod(r2)) => { 
[INFO] [stdout]     |                  ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_field/mod.rs:435:7
[INFO] [stdout]     |
[INFO] [stdout] 435 |       (Expr::Fn(_),_) => Ordering::Greater,
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_field/mod.rs:435:7
[INFO] [stdout]     |
[INFO] [stdout] 395 |       (_,Expr::InDet(_)) => Ordering::Greater,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 398 |       (_,Expr::Infty(_,_)) => Ordering::Greater,
[INFO] [stdout]     |       -------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 401 |       (_,Expr::Zero(_)) => Ordering::Greater,
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 404 |       (_,Expr::One(_)) =>  Ordering::Greater,
[INFO] [stdout]     |       ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 435 |       (Expr::Fn(_),_) => Ordering::Greater,
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ ...and 5 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_field/mod.rs:436:7
[INFO] [stdout]     |
[INFO] [stdout] 436 |       _ => Ordering::Equal,
[INFO] [stdout]     |       ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_field/mod.rs:436:7
[INFO] [stdout]     |
[INFO] [stdout] 393 |       (Expr::InDet(_),Expr::InDet(_)) => Ordering::Equal,
[INFO] [stdout]     |       ------------------------------- matches some of the same values
[INFO] [stdout] 394 |       (Expr::InDet(_),_) => Ordering::Less,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] 395 |       (_,Expr::InDet(_)) => Ordering::Greater,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] 396 |       (Expr::Infty(_, s1),Expr::Infty(_, s2)) => s1.cmp(s2),
[INFO] [stdout]     |       --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 436 |       _ => Ordering::Equal,
[INFO] [stdout]     |       ^ ...and 21 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div_by_root_to_f_times_root` is never used
[INFO] [stdout]    --> src/expr_rc/from/pvec.rs:283:8
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub fn div_by_root_to_f_times_root(base: F, exp:&mut F) -> F {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         err_or_eq(sc, &'(');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let _ = err_or_eq(sc, &'(');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:178:5
[INFO] [stdout]     |
[INFO] [stdout] 178 |     err_or_eq(sc, &']');
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 178 |     let _ = err_or_eq(sc, &']');
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:190:3
[INFO] [stdout]     |
[INFO] [stdout] 190 |   err_or_eq(sc, &'(');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 190 |   let _ = err_or_eq(sc, &'(');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:194:3
[INFO] [stdout]     |
[INFO] [stdout] 194 |   err_or_eq(sc, &',');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 194 |   let _ = err_or_eq(sc, &',');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:198:3
[INFO] [stdout]     |
[INFO] [stdout] 198 |   err_or_eq(sc, &')');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 198 |   let _ = err_or_eq(sc, &')');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:228:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     err_or_eq(sc, &']');
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 228 |     let _ = err_or_eq(sc, &']');
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:240:3
[INFO] [stdout]     |
[INFO] [stdout] 240 |   err_or_eq(sc, &'(');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 240 |   let _ = err_or_eq(sc, &'(');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:244:3
[INFO] [stdout]     |
[INFO] [stdout] 244 |   err_or_eq(sc, &',');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 244 |   let _ = err_or_eq(sc, &',');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:248:3
[INFO] [stdout]     |
[INFO] [stdout] 248 |   err_or_eq(sc, &')');
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 248 |   let _ = err_or_eq(sc, &')');
[INFO] [stdout]     |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 156 |       (_,_) => {
[INFO] [stdout]     |       ^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:156:7
[INFO] [stdout]     |
[INFO] [stdout] 25  |       (Expr::Val(a), Expr::Val(b)) => {
[INFO] [stdout]     |       ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 29  |       (Expr::Val(v), Expr::Sum(s)) => {
[INFO] [stdout]     |       ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 37  |       (Expr::Val(v), _) => {
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 41  |       (_, Expr::Val(_)) => {
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |       (_,_) => {
[INFO] [stdout]     |       ^^^^^ ...and 13 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 |       (Expr::Sum(s), Expr::Prod(p)) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:107:33
[INFO] [stdout]     |
[INFO] [stdout] 107 |       (Expr::Sum(s), Expr::Prod(p)) => {
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:110:18
[INFO] [stdout]     |
[INFO] [stdout] 110 |       (Expr::Sum(sum), Expr::Sqrt(sqrt)) => {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sqrt`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |       (Expr::Sum(sum), Expr::Sqrt(sqrt)) => {
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_sqrt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:135:33
[INFO] [stdout]     |
[INFO] [stdout] 135 |       (Expr::Prod(p),Expr::Sqrt(s)) => {
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:138:16
[INFO] [stdout]     |
[INFO] [stdout] 138 |           Some(i) => {
[INFO] [stdout]     |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 153 |       (Expr::Sqrt(a), Expr::Sqrt(b)) => {
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/expr_rc/ops/mul.rs:153:34
[INFO] [stdout]     |
[INFO] [stdout] 153 |       (Expr::Sqrt(a), Expr::Sqrt(b)) => {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/expr_field/simplify/prod.rs:64:52
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn distribute_prods<'a, Field: FieldTrait<'a>>(mut v: PVec<'a, Field>) -> (SVec<'a, Field>, PVec<'a, Field>) {
[INFO] [stdout]    |                                                    ----^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: to use a constant of type `expr_field::structs::Const` in a pattern, `expr_field::structs::Const` must be annotated with `#[derive(PartialEq)]`
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     let PI: Const = Const { ch: 'π', ascii: "pi", f64: NotNan::new(std::f64::consts::PI).unwrap() };
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the traits must be derived, manual `impl`s are not sufficient
[INFO] [stdout]     = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: to use a constant of type `expr_field::structs::Const` in a pattern, `expr_field::structs::Const` must be annotated with `#[derive(PartialEq)]`
[INFO] [stdout]    --> src/expr_field/io/parse_display.rs:331:9
[INFO] [stdout]     |
[INFO] [stdout] 331 |     let PI: Const = Const { ch: 'π', ascii: "pi", f64: NotNan::new(std::f64::consts::PI).unwrap() };
[INFO] [stdout]     |         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the traits must be derived, manual `impl`s are not sufficient
[INFO] [stdout]     = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/expr_field/io/ascii.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |       Expr::Fn(r) => {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/expr_field/ops/mul.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut v: Vec<_>;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]    --> src/expr_field/mod.rs:345:18
[INFO] [stdout]     |
[INFO] [stdout] 345 |       (Expr::Sum(r1),Expr::Prod(r2)) => { 
[INFO] [stdout]     |                  ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_field/mod.rs:435:7
[INFO] [stdout]     |
[INFO] [stdout] 435 |       (Expr::Fn(_),_) => Ordering::Greater,
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_field/mod.rs:435:7
[INFO] [stdout]     |
[INFO] [stdout] 395 |       (_,Expr::InDet(_)) => Ordering::Greater,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 398 |       (_,Expr::Infty(_,_)) => Ordering::Greater,
[INFO] [stdout]     |       -------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 401 |       (_,Expr::Zero(_)) => Ordering::Greater,
[INFO] [stdout]     |       ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 404 |       (_,Expr::One(_)) =>  Ordering::Greater,
[INFO] [stdout]     |       ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 435 |       (Expr::Fn(_),_) => Ordering::Greater,
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ ...and 5 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expr_field/mod.rs:436:7
[INFO] [stdout]     |
[INFO] [stdout] 436 |       _ => Ordering::Equal,
[INFO] [stdout]     |       ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/expr_field/mod.rs:436:7
[INFO] [stdout]     |
[INFO] [stdout] 393 |       (Expr::InDet(_),Expr::InDet(_)) => Ordering::Equal,
[INFO] [stdout]     |       ------------------------------- matches some of the same values
[INFO] [stdout] 394 |       (Expr::InDet(_),_) => Ordering::Less,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] 395 |       (_,Expr::InDet(_)) => Ordering::Greater,
[INFO] [stdout]     |       ------------------ matches some of the same values
[INFO] [stdout] 396 |       (Expr::Infty(_, s1),Expr::Infty(_, s2)) => s1.cmp(s2),
[INFO] [stdout]     |       --------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 436 |       _ => Ordering::Equal,
[INFO] [stdout]     |       ^ ...and 21 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exxact` (lib test) due to 2 previous errors; 46 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "39cd3993a930677aaa8dd1f6939d202a45dcb423ebc9ee2ebf9c39da5fd661ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39cd3993a930677aaa8dd1f6939d202a45dcb423ebc9ee2ebf9c39da5fd661ae", kill_on_drop: false }`
[INFO] [stdout] 39cd3993a930677aaa8dd1f6939d202a45dcb423ebc9ee2ebf9c39da5fd661ae
