warning: useless use of `vec!`
   --> src/web.rs:459:15
    |
459 |       let csp = vec![
    |  _______________^
460 | |         "sandbox allow-scripts allow-forms",
461 | |         "default-src 'none'",
462 | |         "script-src 'self'",
463 | |         "style-src 'self'",
464 | |         "form-action *",
465 | |     ]
    | |_____^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
    = note: `#[warn(clippy::useless_vec)]` on by default
help: you can use an array directly
    |
459 ~     let csp = ["sandbox allow-scripts allow-forms",
460 +         "default-src 'none'",
461 +         "script-src 'self'",
462 +         "style-src 'self'",
463 +         "form-action *"]
    |

warning: matching over `()` is more explicit
  --> src/metrics.rs:93:61
   |
93 |       pub static ref DOMAIN_VALIDATION_ERROR: IntCounterVec = register_int_counter_vec!(
   |  _____________________________________________________________^
94 | |         "portier_domain_validation_error",
95 | |         "Number of authentication requests for invalid domains",
96 | |         &["reason"]
97 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `__register_counter_vec` which comes from the expansion of the macro `register_int_counter_vec` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:88:54
   |
88 |       pub static ref AUTH_OIDC_COMPLETED: IntCounter = register_int_counter!(
   |  ______________________________________________________^
89 | |         "portier_auth_oidc_completed",
90 | |         "Number of successful OpenID Connect authentications"
91 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:83:63
   |
83 |       pub static ref AUTH_OIDC_FETCH_JWKS_DURATION: Histogram = register_histogram!(
   |  _______________________________________________________________^
84 | |         "portier_auth_oidc_fetch_jwks_duration",
85 | |         "Latency of outgoing requests for OpenID Connect JWKs"
86 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_histogram` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:78:65
   |
78 |       pub static ref AUTH_OIDC_FETCH_CONFIG_DURATION: Histogram = register_histogram!(
   |  _________________________________________________________________^
79 | |         "portier_auth_oidc_fetch_config_duration",
80 | |         "Latency of outgoing requests for OpenID Connect configuration documents"
81 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_histogram` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:68:56
   |
68 |       pub static ref AUTH_OIDC_REQUESTS: IntCounterVec = register_int_counter_vec!(
   |  ________________________________________________________^
69 | |         "portier_auth_oidc_requests",
70 | |         "Number of authentication requests that used OpenID Connect",
71 | |         &["rel"]
72 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `__register_counter_vec` which comes from the expansion of the macro `register_int_counter_vec` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:63:60
   |
63 |       pub static ref AUTH_EMAIL_CODE_INCORRECT: IntCounter = register_int_counter!(
   |  ____________________________________________________________^
64 | |         "portier_auth_email_code_incorrect",
65 | |         "Number of email confirmation attempts with an invalid code"
66 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:58:55
   |
58 |       pub static ref AUTH_EMAIL_COMPLETED: IntCounter = register_int_counter!(
   |  _______________________________________________________^
59 | |         "portier_auth_email_completed",
60 | |         "Number of successful email authentications"
61 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:53:58
   |
53 |       pub static ref AUTH_EMAIL_SEND_DURATION: Histogram = register_histogram!(
   |  __________________________________________________________^
54 | |         "portier_auth_email_send_duration",
55 | |         "Latency of sending email"
56 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_histogram` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:48:54
   |
48 |       pub static ref AUTH_EMAIL_REQUESTS: IntCounter = register_int_counter!(
   |  ______________________________________________________^
49 | |         "portier_auth_email_requests",
50 | |         "Number of authentication requests that used email"
51 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:43:57
   |
43 |       pub static ref AUTH_WEBFINGER_DURATION: Histogram = register_histogram!(
   |  _________________________________________________________^
44 | |         "portier_auth_webfinger_duration",
45 | |         "Latency of outgoing Webfinger requests."
46 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_histogram` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:38:48
   |
38 |       pub static ref AUTH_REQUESTS: IntCounter = register_int_counter!(
   |  ________________________________________________^
39 | |         "portier_auth_requests",
40 | |         "Number of authentication requests"
41 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:33:47
   |
33 |       pub static ref AUTH_LIMITED: IntCounter = register_int_counter!(
   |  _______________________________________________^
34 | |         "portier_auth_limited",
35 | |         "Number of rate-limited authentication requests"
36 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:17:58
   |
17 |       pub static ref HTTP_RESPONSE_STATUS: IntCounterVec = register_int_counter_vec!(
   |  __________________________________________________________^
18 | |         "portier_http_response_status",
19 | |         "Number of HTTP responses by status category",
20 | |         &["code"]
21 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `__register_counter_vec` which comes from the expansion of the macro `register_int_counter_vec` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:12:48
   |
12 |       pub static ref HTTP_REQUESTS: IntCounter = register_int_counter!(
   |  ________________________________________________^
13 | |         "portier_http_requests",
14 | |         "Number of HTTP requests processed"
15 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: matching over `()` is more explicit
  --> src/metrics.rs:7:51
   |
7  |       pub static ref HTTP_CONNECTIONS: IntCounter = register_int_counter!(
   |  ___________________________________________________^
8  | |         "portier_http_connections",
9  | |         "Number of HTTP connections accepted"
10 | |     ).unwrap();
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ignored_unit_patterns
note: the lint level is defined here
  --> src/main.rs:2:9
   |
2  | #![warn(clippy::pedantic)]
   |         ^^^^^^^^^^^^^^^^
   = note: `#[warn(clippy::ignored_unit_patterns)]` implied by `#[warn(clippy::pedantic)]`
   = note: this warning originates in the macro `register_counter` which comes from the expansion of the macro `register_int_counter` (in Nightly builds, run with -Z macro-backtrace for more info)