[INFO] cloning repository https://github.com/Seppel3210/math-parser-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Seppel3210/math-parser-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeppel3210%2Fmath-parser-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeppel3210%2Fmath-parser-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ebcc91467f6d6e9091476fbd04443d82175bb91
[INFO] checking Seppel3210/math-parser-rs against try#163937523761cc0def32f1ba9ed63fdf65ad3478 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSeppel3210%2Fmath-parser-rs" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Seppel3210/math-parser-rs
[INFO] finished tweaking git repo https://github.com/Seppel3210/math-parser-rs
[INFO] tweaked toml for git repo https://github.com/Seppel3210/math-parser-rs written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Seppel3210/math-parser-rs on toolchain 163937523761cc0def32f1ba9ed63fdf65ad3478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Seppel3210/math-parser-rs 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" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2
[INFO] running `Command { std: "docker" "start" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2" "/opt/rustwide/cargo-home/bin/cargo" "+163937523761cc0def32f1ba9ed63fdf65ad3478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking chumsky v0.6.0
[INFO] [stderr]     Checking math_parser v0.1.0 (/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_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION
[INFO] [stdout]   = note: superseded by `deref_patterns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Ln(box arg) => Expr::reduce_ln(arg),
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Neg(box arg) => Expr::reduce_neg(arg),
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:61
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:72
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:49
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:59
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:29
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:44
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:61
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:72
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:18
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:33
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:49
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:59
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Mul(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:121:27
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Mul(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |             Div(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:124:27
[INFO] [stdout]     |
[INFO] [stdout] 124 |             Div(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Pow(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:128:27
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Pow(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Neg(box arg) => -arg.derive(var_name),
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:136:16
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:34:58
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:34:64
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:35:58
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:35:64
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:36:64
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:37:58
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:37:64
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:38:58
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:38:64
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]   --> src/expression.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Ln(box arg) => Expr::reduce_ln(arg),
[INFO] [stdout]    |                                            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]   --> src/expression.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Neg(box arg) => Expr::reduce_neg(arg),
[INFO] [stdout]    |                                              ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c2` in this scope
[INFO] [stdout]   --> src/expression.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 Const(c1 + c2) + right
[INFO] [stdout] 50 +                 Const(c1 + c1) + right
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c1` in this scope
[INFO] [stdout]   --> src/expression.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 left + Const(c1 + c2)
[INFO] [stdout]    |                              ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 53 -                 left + Const(c1 + c2)
[INFO] [stdout] 53 +                 left + Const(c2 + c2)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c2` in this scope
[INFO] [stdout]   --> src/expression.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 74 -                 Const(c1 * c2) * right
[INFO] [stdout] 74 +                 Const(c1 * c1) * right
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c1` in this scope
[INFO] [stdout]   --> src/expression.rs:77:30
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 left * Const(c1 * c2)
[INFO] [stdout]    |                              ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 77 -                 left * Const(c1 * c2)
[INFO] [stdout] 77 +                 left * Const(c2 * c2)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:122:42
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                          ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:122:51
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                                   ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:122:76
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                                                            ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                   ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:125:43
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                           ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:125:52
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:125:77
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                                                             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     / Pow(Box::new(right.clone()), Box::new(Const(2.0)))
[INFO] [stdout]     |                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 (right.derive(var_name) * Ln(Box::new(left.clone())) * self.clone())
[INFO] [stdout]     |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 (right.derive(var_name) * Ln(Box::new(left.clone())) * self.clone())
[INFO] [stdout]     |                                                       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:130:24
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     + (right
[INFO] [stdout]     |                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:131:28
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         * &left.derive(var_name)
[INFO] [stdout]     |                            ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:132:40
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         * Pow(Box::new(left.clone()), Box::new(right - &Const(1.0))))
[INFO] [stdout]     |                                        ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:132:64
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         * Pow(Box::new(left.clone()), Box::new(right - &Const(1.0))))
[INFO] [stdout]     |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Neg(box arg) => -arg.derive(var_name),
[INFO] [stdout]     |                              ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:136:28
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:136:51
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                                                   ^^^ not found in this scope
[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_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in CURRENT_RUSTC_VERSION
[INFO] [stdout]   = note: superseded by `deref_patterns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:38:27
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Ln(box arg) => Expr::reduce_ln(arg),
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Neg(box arg) => Expr::reduce_neg(arg),
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:44
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:61
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:49:72
[INFO] [stdout]    |
[INFO] [stdout] 49 |             (Const(c1), Add(box Const(c2), box right) | Add(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:33
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:49
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:52:59
[INFO] [stdout]    |
[INFO] [stdout] 52 |             (Add(box Const(c1), box left) | Add(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:29
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:44
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:61
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:73:72
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (Const(c1), Mul(box Const(c2), box right) | Mul(box right, box Const(c2))) => {
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:18
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:33
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:49
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]   --> src/expression.rs:76:59
[INFO] [stdout]    |
[INFO] [stdout] 76 |             (Mul(box Const(c1), box left) | Mul(box left, box Const(c1)), Const(c2)) => {
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Mul(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:121:27
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Mul(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |             Div(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:124:27
[INFO] [stdout]     |
[INFO] [stdout] 124 |             Div(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Pow(box left, box right) => {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:128:27
[INFO] [stdout]     |
[INFO] [stdout] 128 |             Pow(box left, box right) => {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:134:17
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Neg(box arg) => -arg.derive(var_name),
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_patterns` have been removed
[INFO] [stdout]    --> src/expression.rs:136:16
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:50:34
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right
[INFO] [stdout]    |                 --------------   ^^^^^ expected `Expr`, found `&Expr`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 expected because this is `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider using clone here
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right.clone()
[INFO] [stdout]    |                                       ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 left + Const(c1 + c2)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ expected `&Expr`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 *left + Const(c1 + c2)
[INFO] [stdout]    |                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right
[INFO] [stdout]    |                 --------------   ^^^^^ expected `Expr`, found `&Expr`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 expected because this is `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider using clone here
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right.clone()
[INFO] [stdout]    |                                       ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:77:24
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 left * Const(c1 * c2)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ expected `&Expr`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 *left * Const(c1 * c2)
[INFO] [stdout]    |                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:34:58
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:34:64
[INFO] [stdout]    |
[INFO] [stdout] 34 |             Add(box left, box right) => Expr::reduce_add(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:35:58
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:35:64
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Sub(box left, box right) => Expr::reduce_sub(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:36:64
[INFO] [stdout]    |
[INFO] [stdout] 36 |             Mul(box left, box right) => Expr::reduce_mul(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:37:58
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:37:64
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Div(box left, box right) => Expr::reduce_div(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]   --> src/expression.rs:38:58
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                                                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]   --> src/expression.rs:38:64
[INFO] [stdout]    |
[INFO] [stdout] 38 |             Pow(box left, box right) => Expr::reduce_pow(left, right),
[INFO] [stdout]    |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]   --> src/expression.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Ln(box arg) => Expr::reduce_ln(arg),
[INFO] [stdout]    |                                            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]   --> src/expression.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |             Neg(box arg) => Expr::reduce_neg(arg),
[INFO] [stdout]    |                                              ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c2` in this scope
[INFO] [stdout]   --> src/expression.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 Const(c1 + c2) + right
[INFO] [stdout] 50 +                 Const(c1 + c1) + right
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c1` in this scope
[INFO] [stdout]   --> src/expression.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 left + Const(c1 + c2)
[INFO] [stdout]    |                              ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 53 -                 left + Const(c1 + c2)
[INFO] [stdout] 53 +                 left + Const(c2 + c2)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c2` in this scope
[INFO] [stdout]   --> src/expression.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right
[INFO] [stdout]    |                            ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 74 -                 Const(c1 * c2) * right
[INFO] [stdout] 74 +                 Const(c1 * c1) * right
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `c1` in this scope
[INFO] [stdout]   --> src/expression.rs:77:30
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 left * Const(c1 * c2)
[INFO] [stdout]    |                              ^^
[INFO] [stdout]    |
[INFO] [stdout] help: a local variable with a similar name exists
[INFO] [stdout]    |
[INFO] [stdout] 77 -                 left * Const(c1 * c2)
[INFO] [stdout] 77 +                 left * Const(c2 * c2)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                  ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:122:42
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                          ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:122:51
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                                   ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:122:76
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 &left.derive(var_name) * right + &right.derive(var_name) * left
[INFO] [stdout]     |                                                                            ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                   ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:125:43
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                           ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:125:52
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:125:77
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 (&left.derive(var_name) * right - &right.derive(var_name) * left)
[INFO] [stdout]     |                                                                             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:126:36
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     / Pow(Box::new(right.clone()), Box::new(Const(2.0)))
[INFO] [stdout]     |                                    ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 (right.derive(var_name) * Ln(Box::new(left.clone())) * self.clone())
[INFO] [stdout]     |                  ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 (right.derive(var_name) * Ln(Box::new(left.clone())) * self.clone())
[INFO] [stdout]     |                                                       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:130:24
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     + (right
[INFO] [stdout]     |                        ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:131:28
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         * &left.derive(var_name)
[INFO] [stdout]     |                            ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `left` in this scope
[INFO] [stdout]    --> src/expression.rs:132:40
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         * Pow(Box::new(left.clone()), Box::new(right - &Const(1.0))))
[INFO] [stdout]     |                                        ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `right` in this scope
[INFO] [stdout]    --> src/expression.rs:132:64
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         * Pow(Box::new(left.clone()), Box::new(right - &Const(1.0))))
[INFO] [stdout]     |                                                                ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:134:30
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Neg(box arg) => -arg.derive(var_name),
[INFO] [stdout]     |                              ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:136:28
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                            ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]    --> src/expression.rs:136:51
[INFO] [stdout]     |
[INFO] [stdout] 136 |             Ln(box arg) => arg.derive(var_name) / arg.clone(),
[INFO] [stdout]     |                                                   ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:50:34
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right
[INFO] [stdout]    |                 --------------   ^^^^^ expected `Expr`, found `&Expr`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 expected because this is `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider using clone here
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 Const(c1 + c2) + right.clone()
[INFO] [stdout]    |                                       ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 left + Const(c1 + c2)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ expected `&Expr`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 *left + Const(c1 + c2)
[INFO] [stdout]    |                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right
[INFO] [stdout]    |                 --------------   ^^^^^ expected `Expr`, found `&Expr`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 expected because this is `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider using clone here
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 Const(c1 * c2) * right.clone()
[INFO] [stdout]    |                                       ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/expression.rs:77:24
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 left * Const(c1 * c2)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ expected `&Expr`, found `Expr`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 *left * Const(c1 * c2)
[INFO] [stdout]    |                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math_parser` (lib) due to 75 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0308, E0425, E0557.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0425, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math_parser` (lib test) due to 75 previous errors
[INFO] running `Command { std: "docker" "inspect" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2", kill_on_drop: false }`
[INFO] [stdout] cbd7efbf112053eed71ecdfb804339ab2c7558f0d7f47526d3e8a9a6e91ea4f2