[INFO] fetching crate rbop 0.2.0...
[INFO] checking rbop-0.2.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate rbop 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rbop 0.2.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbop 0.2.0
[INFO] finished tweaking crates.io crate rbop 0.2.0
[INFO] tweaked toml for crates.io crate rbop 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate rbop 0.2.0 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.13
[INFO] [stderr]   Downloaded rust_decimal v1.23.1
[INFO] [stderr]   Downloaded gl v0.14.0
[INFO] [stderr]   Downloaded speedy2d v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a421ef0b549e9d0e1e3316a8d910260d87b131e20bc150a583cf79747bd971e0
[INFO] running `Command { std: "docker" "start" "-a" "a421ef0b549e9d0e1e3316a8d910260d87b131e20bc150a583cf79747bd971e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a421ef0b549e9d0e1e3316a8d910260d87b131e20bc150a583cf79747bd971e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a421ef0b549e9d0e1e3316a8d910260d87b131e20bc150a583cf79747bd971e0", kill_on_drop: false }`
[INFO] [stdout] a421ef0b549e9d0e1e3316a8d910260d87b131e20bc150a583cf79747bd971e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cee59b3a7cd39760490d1398ff62527182d6d3d7937df0918b07e3982999734
[INFO] running `Command { std: "docker" "start" "-a" "0cee59b3a7cd39760490d1398ff62527182d6d3d7937df0918b07e3982999734", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rust_decimal v1.23.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking rbop v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:504:44
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 => Ok(StructuredNode::Sqrt(box inner.upgrade()?)),
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 => Ok(StructuredNode::Sqrt(Box::new(inner.upgrade()?))),
[INFO] [stdout]     |                                            ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:504:44
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 => Ok(StructuredNode::Sqrt(box inner.upgrade()?)),
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 => Ok(StructuredNode::Sqrt(Box::new(inner.upgrade()?))),
[INFO] [stdout]     |                                            ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:507:51
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 => Ok(StructuredNode::Parentheses(box inner.upgrade()?)),
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 => Ok(StructuredNode::Parentheses(Box::new(inner.upgrade()?))),
[INFO] [stdout]     |                                                   ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:507:51
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 => Ok(StructuredNode::Parentheses(box inner.upgrade()?)),
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 => Ok(StructuredNode::Parentheses(Box::new(inner.upgrade()?))),
[INFO] [stdout]     |                                                   ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:510:46
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?)),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(Box::new(a.upgrade()?), box b.upgrade()?)),
[INFO] [stdout]     |                                              ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:510:64
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?)),
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, Box::new(b.upgrade()?))),
[INFO] [stdout]     |                                                                ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:510:46
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?)),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(Box::new(a.upgrade()?), box b.upgrade()?)),
[INFO] [stdout]     |                                              ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/unstructured.rs:510:64
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?)),
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 510 |                 => Ok(StructuredNode::Divide(box a.upgrade()?, Box::new(b.upgrade()?))),
[INFO] [stdout]     |                                                                ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/structured.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 |         StructuredNode::Parentheses(box self.clone())
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 75 |         StructuredNode::Parentheses(Box::new(self.clone()))
[INFO] [stdout]    |                                     ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/structured.rs:75:37
[INFO] [stdout]    |
[INFO] [stdout] 75 |         StructuredNode::Parentheses(box self.clone())
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 75 |         StructuredNode::Parentheses(Box::new(self.clone()))
[INFO] [stdout]    |                                     ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:100:42
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, box r)
[INFO] [stdout]     |                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(Box::new(l), box r)
[INFO] [stdout]     |                                          ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:100:42
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, box r)
[INFO] [stdout]     |                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(Box::new(l), box r)
[INFO] [stdout]     |                                          ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:100:49
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, box r)
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, Box::new(r))
[INFO] [stdout]     |                                                 ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:100:49
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, box r)
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 StructuredNode::Multiply(box l, Box::new(r))
[INFO] [stdout]     |                                                 ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, box r)
[INFO] [stdout]     |                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(Box::new(l), box r)
[INFO] [stdout]     |                                        ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:105:40
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, box r)
[INFO] [stdout]     |                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(Box::new(l), box r)
[INFO] [stdout]     |                                        ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:105:47
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, box r)
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, Box::new(r))
[INFO] [stdout]     |                                               ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:105:47
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, box r)
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 105 |                 StructuredNode::Divide(box l, Box::new(r))
[INFO] [stdout]     |                                               ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 StructuredNode::Add(l.clone(), box r)
[INFO] [stdout]     |                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 StructuredNode::Add(l.clone(), Box::new(r))
[INFO] [stdout]     |                                                ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 StructuredNode::Add(l.clone(), box r)
[INFO] [stdout]     |                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 StructuredNode::Add(l.clone(), Box::new(r))
[INFO] [stdout]     |                                                ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:114:53
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 StructuredNode::Subtract(l.clone(), box r)
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 StructuredNode::Subtract(l.clone(), Box::new(r))
[INFO] [stdout]     |                                                     ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:114:53
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 StructuredNode::Subtract(l.clone(), box r)
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 StructuredNode::Subtract(l.clone(), Box::new(r))
[INFO] [stdout]     |                                                     ~~~~~~~~~ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 box n.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 Box::new(n.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 box n.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 318 |                 Box::new(n.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:319:17
[INFO] [stdout]     |
[INFO] [stdout] 319 |                 box SimplifiedNode::Number(Number::Rational(1, 2)),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 319 |                 Box::new(SimplifiedNode::Number(Number::Rational(1, 2))),
[INFO] [stdout]     |                 ~~~~~~~~~                                              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:319:17
[INFO] [stdout]     |
[INFO] [stdout] 319 |                 box SimplifiedNode::Number(Number::Rational(1, 2)),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 319 |                 Box::new(SimplifiedNode::Number(Number::Rational(1, 2))),
[INFO] [stdout]     |                 ~~~~~~~~~                                              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:322:17
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 box b.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 Box::new(b.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:322:17
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 box b.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 322 |                 Box::new(b.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 box e.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 Box::new(e.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/structured.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 box e.simplify(),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 Box::new(e.simplify()),
[INFO] [stdout]     |                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, box Self::Number(-Number::one()))
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(Box::new(self), box Self::Number(-Number::one()))
[INFO] [stdout]    |                     ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, box Self::Number(-Number::one()))
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(Box::new(self), box Self::Number(-Number::one()))
[INFO] [stdout]    |                     ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:42:31
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, box Self::Number(-Number::one()))
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, Box::new(Self::Number(-Number::one())))
[INFO] [stdout]    |                               ~~~~~~~~~                            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:42:31
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, box Self::Number(-Number::one()))
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Self::Power(box self, Box::new(Self::Number(-Number::one())))
[INFO] [stdout]    |                               ~~~~~~~~~                            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 box b.flatten(),
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 Box::new(b.flatten()),
[INFO] [stdout]    |                 ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 box b.flatten(),
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 Box::new(b.flatten()),
[INFO] [stdout]    |                 ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 box e.flatten()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 Box::new(e.flatten())
[INFO] [stdout]    |                 ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/simplified.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 box e.flatten()
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 Box::new(e.flatten())
[INFO] [stdout]    |                 ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:172:33
[INFO] [stdout]     |
[INFO] [stdout] 172 | ...                   box new_inner_exponent,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 172 |                                 Box::new(new_inner_exponent),
[INFO] [stdout]     |                                 ~~~~~~~~~                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:172:33
[INFO] [stdout]     |
[INFO] [stdout] 172 | ...                   box new_inner_exponent,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 172 |                                 Box::new(new_inner_exponent),
[INFO] [stdout]     |                                 ~~~~~~~~~                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:170:29
[INFO] [stdout]     |
[INFO] [stdout] 170 | / ...                   box SimplifiedNode::Power(
[INFO] [stdout] 171 | | ...                       b.clone(),
[INFO] [stdout] 172 | | ...                       box new_inner_exponent,
[INFO] [stdout] 173 | | ...                   ),
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 170 ~                             Box::new(SimplifiedNode::Power(
[INFO] [stdout] 171 |                                 b.clone(),
[INFO] [stdout] 172 |                                 box new_inner_exponent,
[INFO] [stdout] 173 ~                             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:170:29
[INFO] [stdout]     |
[INFO] [stdout] 170 | / ...                   box SimplifiedNode::Power(
[INFO] [stdout] 171 | | ...                       b.clone(),
[INFO] [stdout] 172 | | ...                       box new_inner_exponent,
[INFO] [stdout] 173 | | ...                   ),
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 170 ~                             Box::new(SimplifiedNode::Power(
[INFO] [stdout] 171 |                                 b.clone(),
[INFO] [stdout] 172 |                                 box new_inner_exponent,
[INFO] [stdout] 173 ~                             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:174:29
[INFO] [stdout]     |
[INFO] [stdout] 174 | ...                   box new_outer_exponent,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 174 |                             Box::new(new_outer_exponent),
[INFO] [stdout]     |                             ~~~~~~~~~                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:174:29
[INFO] [stdout]     |
[INFO] [stdout] 174 | ...                   box new_outer_exponent,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 174 |                             Box::new(new_outer_exponent),
[INFO] [stdout]     |                             ~~~~~~~~~                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:256:29
[INFO] [stdout]     |
[INFO] [stdout] 256 | ...                   box new_exp,
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 256 |                             Box::new(new_exp),
[INFO] [stdout]     |                             ~~~~~~~~~       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:256:29
[INFO] [stdout]     |
[INFO] [stdout] 256 | ...                   box new_exp,
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 256 |                             Box::new(new_exp),
[INFO] [stdout]     |                             ~~~~~~~~~       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:270:33
[INFO] [stdout]     |
[INFO] [stdout] 270 | ...                   box term.clone(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 270 |                                 Box::new(term.clone()),
[INFO] [stdout]     |                                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:270:33
[INFO] [stdout]     |
[INFO] [stdout] 270 | ...                   box term.clone(),
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 270 |                                 Box::new(term.clone()),
[INFO] [stdout]     |                                 ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:329:50
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(Box::new(n.clone()), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                  ~~~~~~~~~         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:329:50
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(Box::new(n.clone()), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                  ~~~~~~~~~         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:329:65
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), Box::new(SimplifiedNode::Number(c))))
[INFO] [stdout]     |                                                                 ~~~~~~~~~                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/simplified.rs:329:65
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), box SimplifiedNode::Number(c)))
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         Ok(SimplifiedNode::Power(box n.clone(), Box::new(SimplifiedNode::Number(c))))
[INFO] [stdout]     |                                                                 ~~~~~~~~~                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 box result,
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 Box::new(result),
[INFO] [stdout]    |                 ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 box result,
[INFO] [stdout]    |                 ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 Box::new(result),
[INFO] [stdout]    |                 ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 box exp.upgrade()?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 Box::new(exp.upgrade()?),
[INFO] [stdout]    |                 ~~~~~~~~~              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:79:47
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(Box::new(left), box self.parse_level2()?);
[INFO] [stdout]    |                                               ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 box exp.upgrade()?,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 Box::new(exp.upgrade()?),
[INFO] [stdout]    |                 ~~~~~~~~~              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:79:57
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, Box::new(self.parse_level2()?));
[INFO] [stdout]    |                                                         ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:79:47
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(Box::new(left), box self.parse_level2()?);
[INFO] [stdout]    |                                               ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:79:57
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     out = StructuredNode::Add(box left, Box::new(self.parse_level2()?));
[INFO] [stdout]    |                                                         ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:81:52
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(Box::new(left), box self.parse_level2()?);
[INFO] [stdout]    |                                                    ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:81:62
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, Box::new(self.parse_level2()?));
[INFO] [stdout]    |                                                              ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:81:52
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(Box::new(left), box self.parse_level2()?);
[INFO] [stdout]    |                                                    ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/node/parser.rs:81:62
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, box self.parse_level2()?);
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     out = StructuredNode::Subtract(box left, Box::new(self.parse_level2()?));
[INFO] [stdout]    |                                                              ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:102:52
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(Box::new(left), box self.parse_level3()?);
[INFO] [stdout]     |                                                    ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:102:52
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(Box::new(left), box self.parse_level3()?);
[INFO] [stdout]     |                                                    ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:102:62
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                              ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:102:62
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     out = StructuredNode::Multiply(box left, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                              ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:104:50
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(Box::new(left), box self.parse_level3()?);
[INFO] [stdout]     |                                                  ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:104:50
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(Box::new(left), box self.parse_level3()?);
[INFO] [stdout]     |                                                  ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:104:60
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                            ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:104:60
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, box self.parse_level3()?);
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     out = StructuredNode::Divide(box left, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                            ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:208:55
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?))?
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(Box::new(a.upgrade()?), box b.upgrade()?))?
[INFO] [stdout]     |                                                       ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:208:55
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?))?
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(Box::new(a.upgrade()?), box b.upgrade()?))?
[INFO] [stdout]     |                                                       ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:208:73
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?))?
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, Box::new(b.upgrade()?)))?
[INFO] [stdout]     |                                                                         ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:208:73
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, box b.upgrade()?))?
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 208 |             self.accepts_power(StructuredNode::Divide(box a.upgrade()?, Box::new(b.upgrade()?)))?
[INFO] [stdout]     |                                                                         ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:211:53
[INFO] [stdout]     |
[INFO] [stdout] 211 |             self.accepts_power(StructuredNode::Sqrt(box n.upgrade()?))?
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 211 |             self.accepts_power(StructuredNode::Sqrt(Box::new(n.upgrade()?)))?
[INFO] [stdout]     |                                                     ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:211:53
[INFO] [stdout]     |
[INFO] [stdout] 211 |             self.accepts_power(StructuredNode::Sqrt(box n.upgrade()?))?
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 211 |             self.accepts_power(StructuredNode::Sqrt(Box::new(n.upgrade()?)))?
[INFO] [stdout]     |                                                     ~~~~~~~~~            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:214:60
[INFO] [stdout]     |
[INFO] [stdout] 214 |             self.accepts_power(StructuredNode::Parentheses(box inner.upgrade()?))?
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 214 |             self.accepts_power(StructuredNode::Parentheses(Box::new(inner.upgrade()?)))?
[INFO] [stdout]     |                                                            ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:214:60
[INFO] [stdout]     |
[INFO] [stdout] 214 |             self.accepts_power(StructuredNode::Parentheses(box inner.upgrade()?))?
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 214 |             self.accepts_power(StructuredNode::Parentheses(Box::new(inner.upgrade()?)))?
[INFO] [stdout]     |                                                            ~~~~~~~~~                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), box result);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(Box::new(StructuredNode::Number(Number::Rational(-1, 1))), box result);
[INFO] [stdout]     |                                                   ~~~~~~~~~                                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), box result);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(Box::new(StructuredNode::Number(Number::Rational(-1, 1))), box result);
[INFO] [stdout]     |                                                   ~~~~~~~~~                                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:231:104
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), box result);
[INFO] [stdout]     |                                                                                                        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), Box::new(result));
[INFO] [stdout]     |                                                                                                        ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:231:104
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), box result);
[INFO] [stdout]     |                                                                                                        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 result = StructuredNode::Multiply(box StructuredNode::Number(Number::Rational(-1, 1)), Box::new(result));
[INFO] [stdout]     |                                                                                                        ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:247:47
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, box self.parse_level3()?);
[INFO] [stdout]     |                                               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(Box::new(result), box self.parse_level3()?);
[INFO] [stdout]     |                                               ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:247:47
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, box self.parse_level3()?);
[INFO] [stdout]     |                                               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(Box::new(result), box self.parse_level3()?);
[INFO] [stdout]     |                                               ~~~~~~~~~      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:247:59
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, box self.parse_level3()?);
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                           ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/node/parser.rs:247:59
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, box self.parse_level3()?);
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 247 |             result = StructuredNode::Multiply(box result, Box::new(self.parse_level3()?));
[INFO] [stdout]     |                                                           ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |         box StructuredNode::Number(1.into()),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 223 |         Box::new(StructuredNode::Number(1.into())),
[INFO] [stdout]     |         ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |             box StructuredNode::Number(2.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 225 |             Box::new(StructuredNode::Number(2.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             box StructuredNode::Number(3.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 226 |             Box::new(StructuredNode::Number(3.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 | /         box StructuredNode::Multiply(
[INFO] [stdout] 225 | |             box StructuredNode::Number(2.into()),
[INFO] [stdout] 226 | |             box StructuredNode::Number(3.into()),
[INFO] [stdout] 227 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 224 ~         Box::new(StructuredNode::Multiply(
[INFO] [stdout] 225 |             box StructuredNode::Number(2.into()),
[INFO] [stdout] 226 |             box StructuredNode::Number(3.into()),
[INFO] [stdout] 227 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:244:13
[INFO] [stdout]     |
[INFO] [stdout] 244 |             box StructuredNode::Number(1.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 244 |             Box::new(StructuredNode::Number(1.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |             box StructuredNode::Number(2.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 245 |             Box::new(StructuredNode::Number(2.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 | /         box StructuredNode::Add(
[INFO] [stdout] 244 | |             box StructuredNode::Number(1.into()),
[INFO] [stdout] 245 | |             box StructuredNode::Number(2.into()),
[INFO] [stdout] 246 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 243 ~         Box::new(StructuredNode::Add(
[INFO] [stdout] 244 |             box StructuredNode::Number(1.into()),
[INFO] [stdout] 245 |             box StructuredNode::Number(2.into()),
[INFO] [stdout] 246 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:248:13
[INFO] [stdout]     |
[INFO] [stdout] 248 |             box StructuredNode::Number(3.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 248 |             Box::new(StructuredNode::Number(3.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:249:13
[INFO] [stdout]     |
[INFO] [stdout] 249 |             box StructuredNode::Number(4.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 249 |             Box::new(StructuredNode::Number(4.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | /         box StructuredNode::Add(
[INFO] [stdout] 248 | |             box StructuredNode::Number(3.into()),
[INFO] [stdout] 249 | |             box StructuredNode::Number(4.into()),
[INFO] [stdout] 250 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 247 ~         Box::new(StructuredNode::Add(
[INFO] [stdout] 248 |             box StructuredNode::Number(3.into()),
[INFO] [stdout] 249 |             box StructuredNode::Number(4.into()),
[INFO] [stdout] 250 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             box StructuredNode::Number(12.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 275 |             Box::new(StructuredNode::Number(12.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:276:13
[INFO] [stdout]     |
[INFO] [stdout] 276 |             box StructuredNode::Number(34.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 276 |             Box::new(StructuredNode::Number(34.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 | /         box StructuredNode::Multiply(
[INFO] [stdout] 275 | |             box StructuredNode::Number(12.into()),
[INFO] [stdout] 276 | |             box StructuredNode::Number(34.into()),
[INFO] [stdout] 277 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 274 ~         Box::new(StructuredNode::Multiply(
[INFO] [stdout] 275 |             box StructuredNode::Number(12.into()),
[INFO] [stdout] 276 |             box StructuredNode::Number(34.into()),
[INFO] [stdout] 277 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:279:13
[INFO] [stdout]     |
[INFO] [stdout] 279 |             box StructuredNode::Number(56.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 279 |             Box::new(StructuredNode::Number(56.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:280:13
[INFO] [stdout]     |
[INFO] [stdout] 280 |             box StructuredNode::Number(78.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 280 |             Box::new(StructuredNode::Number(78.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:278:9
[INFO] [stdout]     |
[INFO] [stdout] 278 | /         box StructuredNode::Multiply(
[INFO] [stdout] 279 | |             box StructuredNode::Number(56.into()),
[INFO] [stdout] 280 | |             box StructuredNode::Number(78.into()),
[INFO] [stdout] 281 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 278 ~         Box::new(StructuredNode::Multiply(
[INFO] [stdout] 279 |             box StructuredNode::Number(56.into()),
[INFO] [stdout] 280 |             box StructuredNode::Number(78.into()),
[INFO] [stdout] 281 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:290:13
[INFO] [stdout]     |
[INFO] [stdout] 290 |             box StructuredNode::Number(12.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 290 |             Box::new(StructuredNode::Number(12.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:293:21
[INFO] [stdout]     |
[INFO] [stdout] 293 |                     box StructuredNode::Number(34.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 293 |                     Box::new(StructuredNode::Number(34.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:295:25
[INFO] [stdout]     |
[INFO] [stdout] 295 |                         box StructuredNode::Number(56.into()),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 295 |                         Box::new(StructuredNode::Number(56.into())),
[INFO] [stdout]     |                         ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:296:25
[INFO] [stdout]     |
[INFO] [stdout] 296 |                         box StructuredNode::Number(78.into()),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 296 |                         Box::new(StructuredNode::Number(78.into())),
[INFO] [stdout]     |                         ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 | /                     box StructuredNode::Divide(
[INFO] [stdout] 295 | |                         box StructuredNode::Number(56.into()),
[INFO] [stdout] 296 | |                         box StructuredNode::Number(78.into()),
[INFO] [stdout] 297 | |                     )
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 294 ~                     Box::new(StructuredNode::Divide(
[INFO] [stdout] 295 |                         box StructuredNode::Number(56.into()),
[INFO] [stdout] 296 |                         box StructuredNode::Number(78.into()),
[INFO] [stdout] 297 ~                     ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 | /                 box StructuredNode::Add(
[INFO] [stdout] 293 | |                     box StructuredNode::Number(34.into()),
[INFO] [stdout] 294 | |                     box StructuredNode::Divide(
[INFO] [stdout] 295 | |                         box StructuredNode::Number(56.into()),
[INFO] [stdout] 296 | |                         box StructuredNode::Number(78.into()),
[INFO] [stdout] 297 | |                     )
[INFO] [stdout] 298 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 292 ~                 Box::new(StructuredNode::Add(
[INFO] [stdout] 293 |                     box StructuredNode::Number(34.into()),
[INFO] [stdout] ...
[INFO] [stdout] 297 |                     )
[INFO] [stdout] 298 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:299:17
[INFO] [stdout]     |
[INFO] [stdout] 299 |                 box StructuredNode::Number(90.into()),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 299 |                 Box::new(StructuredNode::Number(90.into())),
[INFO] [stdout]     |                 ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 | /             box StructuredNode::Divide(
[INFO] [stdout] 292 | |                 box StructuredNode::Add(
[INFO] [stdout] 293 | |                     box StructuredNode::Number(34.into()),
[INFO] [stdout] 294 | |                     box StructuredNode::Divide(
[INFO] [stdout] ...   |
[INFO] [stdout] 299 | |                 box StructuredNode::Number(90.into()),
[INFO] [stdout] 300 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 291 ~             Box::new(StructuredNode::Divide(
[INFO] [stdout] 292 |                 box StructuredNode::Add(
[INFO] [stdout] ...
[INFO] [stdout] 299 |                 box StructuredNode::Number(90.into()),
[INFO] [stdout] 300 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 | /         box StructuredNode::Add(
[INFO] [stdout] 290 | |             box StructuredNode::Number(12.into()),
[INFO] [stdout] 291 | |             box StructuredNode::Divide(
[INFO] [stdout] 292 | |                 box StructuredNode::Add(
[INFO] [stdout] ...   |
[INFO] [stdout] 300 | |             ),
[INFO] [stdout] 301 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 289 ~         Box::new(StructuredNode::Add(
[INFO] [stdout] 290 |             box StructuredNode::Number(12.into()),
[INFO] [stdout] ...
[INFO] [stdout] 300 |             ),
[INFO] [stdout] 301 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         box StructuredNode::Number(12.into()),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 302 |         Box::new(StructuredNode::Number(12.into())),
[INFO] [stdout]     |         ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |         box StructuredNode::Number(rat!(2, 3)),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 355 |         Box::new(StructuredNode::Number(rat!(2, 3))),
[INFO] [stdout]     |         ~~~~~~~~~                                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 356 |         box StructuredNode::Number(rat!(1)),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 356 |         Box::new(StructuredNode::Number(rat!(1))),
[INFO] [stdout]     |         ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:775:9
[INFO] [stdout]     |
[INFO] [stdout] 775 |         box StructuredNode::Number(dec!(12)),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 775 |         Box::new(StructuredNode::Number(dec!(12))),
[INFO] [stdout]     |         ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:776:9
[INFO] [stdout]     |
[INFO] [stdout] 776 |         box StructuredNode::Number(dec!(3)),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 776 |         Box::new(StructuredNode::Number(dec!(3))),
[INFO] [stdout]     |         ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:790:21
[INFO] [stdout]     |
[INFO] [stdout] 790 |                     box StructuredNode::Number(dec!(12)),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 790 |                     Box::new(StructuredNode::Number(dec!(12))),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:791:21
[INFO] [stdout]     |
[INFO] [stdout] 791 |                     box StructuredNode::Number(dec!(3)),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 791 |                     Box::new(StructuredNode::Number(dec!(3))),
[INFO] [stdout]     |                     ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:789:17
[INFO] [stdout]     |
[INFO] [stdout] 789 | /                 box StructuredNode::Power(
[INFO] [stdout] 790 | |                     box StructuredNode::Number(dec!(12)),
[INFO] [stdout] 791 | |                     box StructuredNode::Number(dec!(3)),
[INFO] [stdout] 792 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 789 ~                 Box::new(StructuredNode::Power(
[INFO] [stdout] 790 |                     box StructuredNode::Number(dec!(12)),
[INFO] [stdout] 791 |                     box StructuredNode::Number(dec!(3)),
[INFO] [stdout] 792 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:794:21
[INFO] [stdout]     |
[INFO] [stdout] 794 |                     box StructuredNode::Number(dec!(45)),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 794 |                     Box::new(StructuredNode::Number(dec!(45))),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:796:25
[INFO] [stdout]     |
[INFO] [stdout] 796 |                         box StructuredNode::Number(dec!(67)),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 796 |                         Box::new(StructuredNode::Number(dec!(67))),
[INFO] [stdout]     |                         ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:797:25
[INFO] [stdout]     |
[INFO] [stdout] 797 |                         box StructuredNode::Number(dec!(8)),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 797 |                         Box::new(StructuredNode::Number(dec!(8))),
[INFO] [stdout]     |                         ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:795:21
[INFO] [stdout]     |
[INFO] [stdout] 795 | /                     box StructuredNode::Divide(
[INFO] [stdout] 796 | |                         box StructuredNode::Number(dec!(67)),
[INFO] [stdout] 797 | |                         box StructuredNode::Number(dec!(8)),
[INFO] [stdout] 798 | |                     ),
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 795 ~                     Box::new(StructuredNode::Divide(
[INFO] [stdout] 796 |                         box StructuredNode::Number(dec!(67)),
[INFO] [stdout] 797 |                         box StructuredNode::Number(dec!(8)),
[INFO] [stdout] 798 ~                     )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:793:17
[INFO] [stdout]     |
[INFO] [stdout] 793 | /                 box StructuredNode::Power(
[INFO] [stdout] 794 | |                     box StructuredNode::Number(dec!(45)),
[INFO] [stdout] 795 | |                     box StructuredNode::Divide(
[INFO] [stdout] 796 | |                         box StructuredNode::Number(dec!(67)),
[INFO] [stdout] 797 | |                         box StructuredNode::Number(dec!(8)),
[INFO] [stdout] 798 | |                     ),
[INFO] [stdout] 799 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 793 ~                 Box::new(StructuredNode::Power(
[INFO] [stdout] 794 |                     box StructuredNode::Number(dec!(45)),
[INFO] [stdout] ...
[INFO] [stdout] 798 |                     ),
[INFO] [stdout] 799 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 | /             box StructuredNode::Add(
[INFO] [stdout] 789 | |                 box StructuredNode::Power(
[INFO] [stdout] 790 | |                     box StructuredNode::Number(dec!(12)),
[INFO] [stdout] 791 | |                     box StructuredNode::Number(dec!(3)),
[INFO] [stdout] ...   |
[INFO] [stdout] 799 | |                 ),
[INFO] [stdout] 800 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 788 ~             Box::new(StructuredNode::Add(
[INFO] [stdout] 789 |                 box StructuredNode::Power(
[INFO] [stdout] ...
[INFO] [stdout] 799 |                 ),
[INFO] [stdout] 800 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:801:13
[INFO] [stdout]     |
[INFO] [stdout] 801 |             box StructuredNode::Number(dec!(9)),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 801 |             Box::new(StructuredNode::Number(dec!(9))),
[INFO] [stdout]     |             ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:787:9
[INFO] [stdout]     |
[INFO] [stdout] 787 | /         box StructuredNode::Add(
[INFO] [stdout] 788 | |             box StructuredNode::Add(
[INFO] [stdout] 789 | |                 box StructuredNode::Power(
[INFO] [stdout] 790 | |                     box StructuredNode::Number(dec!(12)),
[INFO] [stdout] ...   |
[INFO] [stdout] 801 | |             box StructuredNode::Number(dec!(9)),
[INFO] [stdout] 802 | |         ),
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 787 ~         Box::new(StructuredNode::Add(
[INFO] [stdout] 788 |             box StructuredNode::Add(
[INFO] [stdout] ...
[INFO] [stdout] 801 |             box StructuredNode::Number(dec!(9)),
[INFO] [stdout] 802 ~         )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:803:9
[INFO] [stdout]     |
[INFO] [stdout] 803 |         box StructuredNode::Number(1.into()),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 803 |         Box::new(StructuredNode::Number(1.into())),
[INFO] [stdout]     |         ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1248:9
[INFO] [stdout]      |
[INFO] [stdout] 1248 |         box StructuredNode::Number(rat!(12)),
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1248 |         Box::new(StructuredNode::Number(rat!(12))),
[INFO] [stdout]      |         ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1249:9
[INFO] [stdout]      |
[INFO] [stdout] 1249 |         box StructuredNode::Number(rat!(0)),
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1249 |         Box::new(StructuredNode::Number(rat!(0))),
[INFO] [stdout]      |         ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1256:13
[INFO] [stdout]      |
[INFO] [stdout] 1256 |             box StructuredNode::Number(dec!(12)),
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1256 |             Box::new(StructuredNode::Number(dec!(12))),
[INFO] [stdout]      |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1257:13
[INFO] [stdout]      |
[INFO] [stdout] 1257 |             box StructuredNode::Number(dec!(0)),
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1257 |             Box::new(StructuredNode::Number(dec!(0))),
[INFO] [stdout]      |             ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1255:9
[INFO] [stdout]      |
[INFO] [stdout] 1255 | /         box StructuredNode::Divide(
[INFO] [stdout] 1256 | |             box StructuredNode::Number(dec!(12)),
[INFO] [stdout] 1257 | |             box StructuredNode::Number(dec!(0)),
[INFO] [stdout] 1258 | |         ),
[INFO] [stdout]      | |_________^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1255 ~         Box::new(StructuredNode::Divide(
[INFO] [stdout] 1256 |             box StructuredNode::Number(dec!(12)),
[INFO] [stdout] 1257 |             box StructuredNode::Number(dec!(0)),
[INFO] [stdout] 1258 ~         )),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1259:9
[INFO] [stdout]      |
[INFO] [stdout] 1259 |         box StructuredNode::Number(dec!(0.1)),
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1259 |         Box::new(StructuredNode::Number(dec!(0.1))),
[INFO] [stdout]      |         ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 box StructuredNode::Number(12.into()),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 127 |                 Box::new(StructuredNode::Number(12.into())),
[INFO] [stdout]     |                 ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 box StructuredNode::Number(34.into()),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 Box::new(StructuredNode::Number(34.into())),
[INFO] [stdout]     |                 ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 | /             box StructuredNode::Multiply(
[INFO] [stdout] 127 | |                 box StructuredNode::Number(12.into()),
[INFO] [stdout] 128 | |                 box StructuredNode::Number(34.into()),
[INFO] [stdout] 129 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 ~             Box::new(StructuredNode::Multiply(
[INFO] [stdout] 127 |                 box StructuredNode::Number(12.into()),
[INFO] [stdout] 128 |                 box StructuredNode::Number(34.into()),
[INFO] [stdout] 129 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 box StructuredNode::Number(56.into()),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 Box::new(StructuredNode::Number(56.into())),
[INFO] [stdout]     |                 ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 box StructuredNode::Number(78.into()),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 Box::new(StructuredNode::Number(78.into())),
[INFO] [stdout]     |                 ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 | /             box StructuredNode::Multiply(
[INFO] [stdout] 131 | |                 box StructuredNode::Number(56.into()),
[INFO] [stdout] 132 | |                 box StructuredNode::Number(78.into()),
[INFO] [stdout] 133 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 130 ~             Box::new(StructuredNode::Multiply(
[INFO] [stdout] 131 |                 box StructuredNode::Number(56.into()),
[INFO] [stdout] 132 |                 box StructuredNode::Number(78.into()),
[INFO] [stdout] 133 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:232:13
[INFO] [stdout]     |
[INFO] [stdout] 232 |             box StructuredNode::Number(1.into()),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 232 |             Box::new(StructuredNode::Number(1.into())),
[INFO] [stdout]     |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:235:21
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     box StructuredNode::Number(2.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     Box::new(StructuredNode::Number(2.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     box StructuredNode::Number(3.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     Box::new(StructuredNode::Number(3.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:234:17
[INFO] [stdout]     |
[INFO] [stdout] 234 | /                 box StructuredNode::Multiply(
[INFO] [stdout] 235 | |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 236 | |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 237 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 234 ~                 Box::new(StructuredNode::Multiply(
[INFO] [stdout] 235 |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 236 |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 237 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 | /             box StructuredNode::Parentheses(
[INFO] [stdout] 234 | |                 box StructuredNode::Multiply(
[INFO] [stdout] 235 | |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 236 | |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 237 | |                 ),
[INFO] [stdout] 238 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 233 ~             Box::new(StructuredNode::Parentheses(
[INFO] [stdout] 234 |                 box StructuredNode::Multiply(
[INFO] [stdout] ...
[INFO] [stdout] 237 |                 ),
[INFO] [stdout] 238 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:257:21
[INFO] [stdout]     |
[INFO] [stdout] 257 |                     box StructuredNode::Number(1.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 257 |                     Box::new(StructuredNode::Number(1.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:258:21
[INFO] [stdout]     |
[INFO] [stdout] 258 |                     box StructuredNode::Number(2.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 258 |                     Box::new(StructuredNode::Number(2.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:256:17
[INFO] [stdout]     |
[INFO] [stdout] 256 | /                 box StructuredNode::Add(
[INFO] [stdout] 257 | |                     box StructuredNode::Number(1.into()),
[INFO] [stdout] 258 | |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 259 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 256 ~                 Box::new(StructuredNode::Add(
[INFO] [stdout] 257 |                     box StructuredNode::Number(1.into()),
[INFO] [stdout] 258 |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 259 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:255:13
[INFO] [stdout]     |
[INFO] [stdout] 255 | /             box StructuredNode::Parentheses(
[INFO] [stdout] 256 | |                 box StructuredNode::Add(
[INFO] [stdout] 257 | |                     box StructuredNode::Number(1.into()),
[INFO] [stdout] 258 | |                     box StructuredNode::Number(2.into()),
[INFO] [stdout] 259 | |                 ),
[INFO] [stdout] 260 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 255 ~             Box::new(StructuredNode::Parentheses(
[INFO] [stdout] 256 |                 box StructuredNode::Add(
[INFO] [stdout] ...
[INFO] [stdout] 259 |                 ),
[INFO] [stdout] 260 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:263:21
[INFO] [stdout]     |
[INFO] [stdout] 263 |                     box StructuredNode::Number(3.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 263 |                     Box::new(StructuredNode::Number(3.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:264:21
[INFO] [stdout]     |
[INFO] [stdout] 264 |                     box StructuredNode::Number(4.into()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 264 |                     Box::new(StructuredNode::Number(4.into())),
[INFO] [stdout]     |                     ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:262:17
[INFO] [stdout]     |
[INFO] [stdout] 262 | /                 box StructuredNode::Add(
[INFO] [stdout] 263 | |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 264 | |                     box StructuredNode::Number(4.into()),
[INFO] [stdout] 265 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 262 ~                 Box::new(StructuredNode::Add(
[INFO] [stdout] 263 |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 264 |                     box StructuredNode::Number(4.into()),
[INFO] [stdout] 265 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 | /             box StructuredNode::Parentheses(
[INFO] [stdout] 262 | |                 box StructuredNode::Add(
[INFO] [stdout] 263 | |                     box StructuredNode::Number(3.into()),
[INFO] [stdout] 264 | |                     box StructuredNode::Number(4.into()),
[INFO] [stdout] 265 | |                 ),
[INFO] [stdout] 266 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 261 ~             Box::new(StructuredNode::Parentheses(
[INFO] [stdout] 262 |                 box StructuredNode::Add(
[INFO] [stdout] ...
[INFO] [stdout] 265 |                 ),
[INFO] [stdout] 266 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:710:13
[INFO] [stdout]     |
[INFO] [stdout] 710 |             box StructuredNode::Number(rat!(2)),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 710 |             Box::new(StructuredNode::Number(rat!(2))),
[INFO] [stdout]     |             ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:711:13
[INFO] [stdout]     |
[INFO] [stdout] 711 |             box StructuredNode::Variable('x'),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 711 |             Box::new(StructuredNode::Variable('x')),
[INFO] [stdout]     |             ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:724:13
[INFO] [stdout]     |
[INFO] [stdout] 724 |             box StructuredNode::Number(dec!(0.5)),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 724 |             Box::new(StructuredNode::Number(dec!(0.5))),
[INFO] [stdout]     |             ~~~~~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:725:13
[INFO] [stdout]     |
[INFO] [stdout] 725 |             box StructuredNode::Variable('x'),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 725 |             Box::new(StructuredNode::Variable('x')),
[INFO] [stdout]     |             ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:740:13
[INFO] [stdout]     |
[INFO] [stdout] 740 |             box StructuredNode::Number(rat!(2)),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 740 |             Box::new(StructuredNode::Number(rat!(2))),
[INFO] [stdout]     |             ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:743:21
[INFO] [stdout]     |
[INFO] [stdout] 743 |                     box StructuredNode::Number(rat!(1)),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 743 |                     Box::new(StructuredNode::Number(rat!(1))),
[INFO] [stdout]     |                     ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:744:21
[INFO] [stdout]     |
[INFO] [stdout] 744 |                     box StructuredNode::Variable('x'),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 744 |                     Box::new(StructuredNode::Variable('x')),
[INFO] [stdout]     |                     ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:742:17
[INFO] [stdout]     |
[INFO] [stdout] 742 | /                 box StructuredNode::Add(
[INFO] [stdout] 743 | |                     box StructuredNode::Number(rat!(1)),
[INFO] [stdout] 744 | |                     box StructuredNode::Variable('x'),
[INFO] [stdout] 745 | |                 )
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 742 ~                 Box::new(StructuredNode::Add(
[INFO] [stdout] 743 |                     box StructuredNode::Number(rat!(1)),
[INFO] [stdout] 744 |                     box StructuredNode::Variable('x'),
[INFO] [stdout] 745 ~                 ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:741:13
[INFO] [stdout]     |
[INFO] [stdout] 741 | /             box StructuredNode::Parentheses(
[INFO] [stdout] 742 | |                 box StructuredNode::Add(
[INFO] [stdout] 743 | |                     box StructuredNode::Number(rat!(1)),
[INFO] [stdout] 744 | |                     box StructuredNode::Variable('x'),
[INFO] [stdout] 745 | |                 )
[INFO] [stdout] 746 | |             )
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 741 ~             Box::new(StructuredNode::Parentheses(
[INFO] [stdout] 742 |                 box StructuredNode::Add(
[INFO] [stdout] ...
[INFO] [stdout] 745 |                 )
[INFO] [stdout] 746 ~             ))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:761:17
[INFO] [stdout]     |
[INFO] [stdout] 761 |                 box StructuredNode::Variable('x'),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 761 |                 Box::new(StructuredNode::Variable('x')),
[INFO] [stdout]     |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:763:21
[INFO] [stdout]     |
[INFO] [stdout] 763 |                     box StructuredNode::Variable('y'),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 763 |                     Box::new(StructuredNode::Variable('y')),
[INFO] [stdout]     |                     ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:764:21
[INFO] [stdout]     |
[INFO] [stdout] 764 |                     box StructuredNode::Variable('z'),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 764 |                     Box::new(StructuredNode::Variable('z')),
[INFO] [stdout]     |                     ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:762:17
[INFO] [stdout]     |
[INFO] [stdout] 762 | /                 box StructuredNode::Multiply(
[INFO] [stdout] 763 | |                     box StructuredNode::Variable('y'),
[INFO] [stdout] 764 | |                     box StructuredNode::Variable('z'),
[INFO] [stdout] 765 | |                 ),
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 762 ~                 Box::new(StructuredNode::Multiply(
[INFO] [stdout] 763 |                     box StructuredNode::Variable('y'),
[INFO] [stdout] 764 |                     box StructuredNode::Variable('z'),
[INFO] [stdout] 765 ~                 )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:760:13
[INFO] [stdout]     |
[INFO] [stdout] 760 | /             box StructuredNode::Multiply(
[INFO] [stdout] 761 | |                 box StructuredNode::Variable('x'),
[INFO] [stdout] 762 | |                 box StructuredNode::Multiply(
[INFO] [stdout] 763 | |                     box StructuredNode::Variable('y'),
[INFO] [stdout] 764 | |                     box StructuredNode::Variable('z'),
[INFO] [stdout] 765 | |                 ),
[INFO] [stdout] 766 | |             ),
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 760 ~             Box::new(StructuredNode::Multiply(
[INFO] [stdout] 761 |                 box StructuredNode::Variable('x'),
[INFO] [stdout] ...
[INFO] [stdout] 765 |                 ),
[INFO] [stdout] 766 ~             )),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/tests.rs:767:13
[INFO] [stdout]     |
[INFO] [stdout] 767 |             box StructuredNode::Number(rat!(2)),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 767 |             Box::new(StructuredNode::Number(rat!(2))),
[INFO] [stdout]     |             ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1133:13
[INFO] [stdout]      |
[INFO] [stdout] 1133 |             box SimplifiedNode::Number(rat!(25)),
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1133 |             Box::new(SimplifiedNode::Number(rat!(25))),
[INFO] [stdout]      |             ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1134:13
[INFO] [stdout]      |
[INFO] [stdout] 1134 |             box SimplifiedNode::Number(rat!(1, 3)),
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1134 |             Box::new(SimplifiedNode::Number(rat!(1, 3))),
[INFO] [stdout]      |             ~~~~~~~~~                                  +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1154:17
[INFO] [stdout]      |
[INFO] [stdout] 1154 |                 box SimplifiedNode::Variable('x'),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1154 |                 Box::new(SimplifiedNode::Variable('x')),
[INFO] [stdout]      |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1155:17
[INFO] [stdout]      |
[INFO] [stdout] 1155 |                 box SimplifiedNode::Number(rat!(5)),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1155 |                 Box::new(SimplifiedNode::Number(rat!(5))),
[INFO] [stdout]      |                 ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1158:17
[INFO] [stdout]      |
[INFO] [stdout] 1158 |                 box SimplifiedNode::Variable('y'),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1158 |                 Box::new(SimplifiedNode::Variable('y')),
[INFO] [stdout]      |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1159:17
[INFO] [stdout]      |
[INFO] [stdout] 1159 |                 box SimplifiedNode::Number(rat!(11)),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1159 |                 Box::new(SimplifiedNode::Number(rat!(11))),
[INFO] [stdout]      |                 ~~~~~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1175:17
[INFO] [stdout]      |
[INFO] [stdout] 1175 |                 box SimplifiedNode::Variable('x'),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1175 |                 Box::new(SimplifiedNode::Variable('x')),
[INFO] [stdout]      |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1176:17
[INFO] [stdout]      |
[INFO] [stdout] 1176 |                 box SimplifiedNode::Number(rat!(6)),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1176 |                 Box::new(SimplifiedNode::Number(rat!(6))),
[INFO] [stdout]      |                 ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1179:17
[INFO] [stdout]      |
[INFO] [stdout] 1179 |                 box SimplifiedNode::Variable('y'),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1179 |                 Box::new(SimplifiedNode::Variable('y')),
[INFO] [stdout]      |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1180:17
[INFO] [stdout]      |
[INFO] [stdout] 1180 |                 box SimplifiedNode::Number(rat!(3)),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1180 |                 Box::new(SimplifiedNode::Number(rat!(3))),
[INFO] [stdout]      |                 ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1194:17
[INFO] [stdout]      |
[INFO] [stdout] 1194 |                 box SimplifiedNode::Variable('x'),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1194 |                 Box::new(SimplifiedNode::Variable('x')),
[INFO] [stdout]      |                 ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1195:17
[INFO] [stdout]      |
[INFO] [stdout] 1195 |                 box SimplifiedNode::Number(rat!(2)),
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1195 |                 Box::new(SimplifiedNode::Number(rat!(2))),
[INFO] [stdout]      |                 ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1226:21
[INFO] [stdout]      |
[INFO] [stdout] 1226 |                     box SimplifiedNode::Variable('x'),
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1226 |                     Box::new(SimplifiedNode::Variable('x')),
[INFO] [stdout]      |                     ~~~~~~~~~                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]     --> src/tests.rs:1227:21
[INFO] [stdout]      |
[INFO] [stdout] 1227 |                     box SimplifiedNode::Number(rat!(2)),
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]      |
[INFO] [stdout] 1227 |                     Box::new(SimplifiedNode::Number(rat!(2))),
[INFO] [stdout]      |                     ~~~~~~~~~                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rbop` (lib) due to 45 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rbop` (lib test) due to 141 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "0cee59b3a7cd39760490d1398ff62527182d6d3d7937df0918b07e3982999734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cee59b3a7cd39760490d1398ff62527182d6d3d7937df0918b07e3982999734", kill_on_drop: false }`
[INFO] [stdout] 0cee59b3a7cd39760490d1398ff62527182d6d3d7937df0918b07e3982999734
