[INFO] fetching crate symbolics_calculus 0.1.5...
[INFO] testing symbolics_calculus-0.1.5 against 1.59.0 for beta-1.60-1
[INFO] extracting crate symbolics_calculus 0.1.5 into /workspace/builds/worker-114/source
[INFO] validating manifest of crates.io crate symbolics_calculus 0.1.5 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate symbolics_calculus 0.1.5
[INFO] finished tweaking crates.io crate symbolics_calculus 0.1.5
[INFO] tweaked toml for crates.io crate symbolics_calculus 0.1.5 written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d8a13f81efd8c1ec23e5d48758f4f3233dca3ff11ef44950b9d24caf490e939
[INFO] running `Command { std: "docker" "start" "-a" "7d8a13f81efd8c1ec23e5d48758f4f3233dca3ff11ef44950b9d24caf490e939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d8a13f81efd8c1ec23e5d48758f4f3233dca3ff11ef44950b9d24caf490e939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d8a13f81efd8c1ec23e5d48758f4f3233dca3ff11ef44950b9d24caf490e939", kill_on_drop: false }`
[INFO] [stdout] 7d8a13f81efd8c1ec23e5d48758f4f3233dca3ff11ef44950b9d24caf490e939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14532045703e2469d977cab624f778332a7fdd505af7330b1c5e394f1e8d212d
[INFO] running `Command { std: "docker" "start" "-a" "14532045703e2469d977cab624f778332a7fdd505af7330b1c5e394f1e8d212d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling symbolics_core v0.1.5
[INFO] [stderr]    Compiling symbolics_calculus v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `apply`, `s`
[INFO] [stdout]  --> src/lib.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use symbolics_core::{s, apply};
[INFO] [stdout]   |                      ^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]  --> src/lib.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]   |                                      ^ help: try naming the parameter or explicitly ignoring it: `_: S`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:16:47
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ----^^^^^^--
[INFO] [stdout]    |                                           |   |
[INFO] [stdout]    |                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                           this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                    ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:16:80
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                                            ----^^^^^^--
[INFO] [stdout]    |                                                                            |   |
[INFO] [stdout]    |                                                                            |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                                                            this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:16:69
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                                     ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:17:47
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ----^^^^^^--
[INFO] [stdout]    |                                           |   |
[INFO] [stdout]    |                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                           this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt))**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt))**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt))**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(<String as AsRef<str>>::as_ref(wrt))**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:17:36
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                    ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:17:102
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                                                                  ----^^^^^^--
[INFO] [stdout]    |                                                                                                  |   |
[INFO] [stdout]    |                                                                                                  |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                                                                                  this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)),
[INFO] [stdout]    |                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:17:91
[INFO] [stdout]    |
[INFO] [stdout] 17 |             Mul(a, b) => a.clone().deriv1(wrt.as_ref())**b.clone() + *a.clone()*b.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                                                           ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:18:89
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...e().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                              ----^^^^^^--
[INFO] [stdout]    |                              |   |
[INFO] [stdout]    |                              |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                              this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                                                                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                                                                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                                                                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                                                                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:18:78
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...   Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/...
[INFO] [stdout]    |                                                                        ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:18:134
[INFO] [stdout]    |
[INFO] [stdout] 18 | ....clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                              ----^^^^^^--
[INFO] [stdout]    |                              |   |
[INFO] [stdout]    |                              |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                              this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt))/(*a.clone()))),
[INFO] [stdout]    |                                                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt))/(*a.clone()))),
[INFO] [stdout]    |                                                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt))/(*a.clone()))),
[INFO] [stdout]    |                                                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 18 |             Pow(a, b) => (*a.clone()^*b.clone()) * (a.clone().ln()*b.clone().deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(<String as AsRef<str>>::as_ref(wrt))/(*a.clone()))),
[INFO] [stdout]    |                                                                                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:18:123
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...deriv1(wrt.as_ref()) + (*b.clone()*a.clone().deriv1(wrt.as_ref())/(*a.clone()))),
[INFO] [stdout]    |                                                 ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:19:47
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(wrt.as_ref()) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                           ----^^^^^^--
[INFO] [stdout]    |                                           |   |
[INFO] [stdout]    |                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                           this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:19:36
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Log(a, b) => a.clone().deriv1(wrt.as_ref()) / (*a.clone() * b.ln()),
[INFO] [stdout]    |                                    ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:20:62
[INFO] [stdout]    |
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                          ----^^^^^^--
[INFO] [stdout]    |                                                          |   |
[INFO] [stdout]    |                                                          |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                                          this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |             Sin(x) => x.clone().cos() * x.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                   ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:21:63
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                           ----^^^^^^--
[INFO] [stdout]    |                                                           |   |
[INFO] [stdout]    |                                                           |   cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                                                           this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: AsRef<_>` found in the following crates: `alloc`, `std`:
[INFO] [stdout]            - impl AsRef<OsStr> for String;
[INFO] [stdout]            - impl AsRef<Path> for String;
[INFO] [stdout]            - impl AsRef<[u8]> for String;
[INFO] [stdout]            - impl AsRef<str> for String;
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(<String as AsRef<OsStr>>::as_ref(wrt)),
[INFO] [stdout]    |                                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(<String as AsRef<Path>>::as_ref(wrt)),
[INFO] [stdout]    |                                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(<String as AsRef<[u8]>>::as_ref(wrt)),
[INFO] [stdout]    |                                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(<String as AsRef<str>>::as_ref(wrt)),
[INFO] [stdout]    |                                                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:21:52
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Cos(x) => -x.clone().sin() * x.clone().deriv1(wrt.as_ref()),
[INFO] [stdout]    |                                                    ^^^^^^ cannot infer type for reference `&_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `String: From<&_>` found in the `alloc` crate:
[INFO] [stdout]            - impl<> From<&String> for String;
[INFO] [stdout]            - impl<> From<&str> for String;
[INFO] [stdout]    = note: required because of the requirements on the impl of `Into<String>` for `&_`
[INFO] [stdout] note: required by a bound in `Derivative::deriv1`
[INFO] [stdout]   --> src/lib.rs:6:18
[INFO] [stdout]    |
[INFO] [stdout] 6  |     fn deriv1<S: Into<String>>(self, S) -> Self;
[INFO] [stdout]    |                  ^^^^^^^^^^^^ required by this bound in `Derivative::deriv1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `symbolics_calculus` due to 19 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "14532045703e2469d977cab624f778332a7fdd505af7330b1c5e394f1e8d212d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14532045703e2469d977cab624f778332a7fdd505af7330b1c5e394f1e8d212d", kill_on_drop: false }`
[INFO] [stdout] 14532045703e2469d977cab624f778332a7fdd505af7330b1c5e394f1e8d212d