Build fails on nightly rustc 1.46.0-nightly (346aec9b0 2020-07-11)

[snakehand]

Cargo.toml:
[dependencies]
rocket = "0.4.5"
rocket_contrib = { version = "0.4.5", features = ["json"] }

Build output:

Compiling rocket_http v0.4.5
error: proc macro panicked
--> /home/frank/.cargo/registry/src/github.com-1ecc6299db9ec823/pear-0.1.2/src/macros.rs:71:9
|
69 | / macro_rules! pear_try {
70 | | ([$name:ident; $input:ident] $e:expr) => {{
71 | | switch! { [$name;$input] result@$e => { Some(result) }, _ => { None } }
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
72 | | }};
... |
78 | | }}
79 | | }
| |_- in this expansion of pear_try!
|
::: /home/frank/.cargo/registry/src/github.com-1ecc6299db9ec823/rocket_http-0.4.5/src/parse/uri/parser.rs:119:34
|
119 | let path_and_query = pear_try!(path_and_query(is_pchar));
| ----------------------------------- in this macro invocation
|
= help: message: called Option::unwrap() on a None value

error: aborting due to previous error

error: could not compile rocket_http.

[finnkauski]

   Compiling rocket_http v0.4.5
error: proc macro panicked
   --> /home/finn/.cargo/registry/src/github.com-1ecc6299db9ec823/rocket_http-0.4.5/src/parse/uri/parser.rs:119:34
    |
119 |             let path_and_query = pear_try!(path_and_query(is_pchar));
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: message: called `Option::unwrap()` on a `None` value
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

error: could not compile `rocket_http`.

To learn more, run the command again with --verbose

Fails to compile for me as well.

Cargo.toml

[dependencies]
rocket = "0.4.5"
rocket_contrib = { version = "0.4.5", default-features = false, features = ["diesel_postgres_pool", "tera_templates", "serve"] }
diesel = { version = "1.4.5", features = ["postgres", "r2d2"], default-features = false}
serde = "*"
serde_derive = "*"

[jebrosen]

See #1358 - this should be fixed by a cargo update.