Dec 04 21:45:26.102 INFO checking blechschmidt/masswhois against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:45:26.103 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 21:45:26.376 INFO [stdout] cafc00fbf4f9c35948840592c2eef81d567c9e0f9710e261938be7246cd5f73a
Dec 04 21:45:26.379 INFO running `"docker" "start" "-a" "cafc00fbf4f9c35948840592c2eef81d567c9e0f9710e261938be7246cd5f73a"`
Dec 04 21:45:26.904 INFO [stderr] usermod: no changes
Dec 04 21:45:27.189 INFO [stderr]    Compiling openssl v0.9.13
Dec 04 21:45:27.207 INFO [stderr]    Compiling proc-macro-hack-impl v0.3.3
Dec 04 21:45:27.207 INFO [stderr]    Compiling trust-dns v0.10.2
Dec 04 21:45:27.223 INFO [stderr]    Compiling unindent v0.1.2
Dec 04 21:45:27.224 INFO [stderr]     Checking netbuf v0.4.0
Dec 04 21:45:27.225 INFO [stderr]    Compiling backtrace-sys v0.1.11
Dec 04 21:45:27.225 INFO [stderr]     Checking net2 v0.2.29
Dec 04 21:45:27.225 INFO [stderr]     Checking bytes v0.4.4
Dec 04 21:45:29.799 INFO [stderr]     Checking mio v0.6.8
Dec 04 21:45:29.806 INFO [stderr]     Checking chrono v0.2.25
Dec 04 21:45:30.319 INFO [stderr]     Checking tokio-io v0.1.2
Dec 04 21:45:30.541 INFO [stderr]    Compiling proc-macro-hack v0.3.3
Dec 04 21:45:31.143 INFO [stderr]    Compiling indoc-impl v0.2.1
Dec 04 21:45:34.558 INFO [stderr]     Checking indoc v0.2.1
Dec 04 21:45:34.654 INFO [stderr]     Checking tokio-core v0.1.7
Dec 04 21:45:36.307 INFO [stderr]     Checking tokio-openssl v0.1.2
Dec 04 21:45:46.911 INFO [stderr]     Checking backtrace v0.2.3
Dec 04 21:45:47.476 INFO [stderr]     Checking error-chain v0.1.12
Dec 04 21:45:53.568 INFO [stderr]     Checking masswhois v0.1.0 (/source)
Dec 04 21:45:57.571 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 04 21:45:57.571 INFO [stderr]    --> src/dnsutils/mod.rs:486:25
Dec 04 21:45:57.572 INFO [stderr]     |
Dec 04 21:45:57.572 INFO [stderr] 486 |         self.expiry.add((ExpiryRef::Positive(keyref, index)), ttl);
Dec 04 21:45:57.572 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 21:45:57.572 INFO [stderr]     |
Dec 04 21:45:57.573 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 04 21:45:57.573 INFO [stderr] 
Dec 04 21:45:57.747 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 04 21:45:57.748 INFO [stderr]    --> src/dnsutils/mod.rs:486:25
Dec 04 21:45:57.748 INFO [stderr]     |
Dec 04 21:45:57.749 INFO [stderr] 486 |         self.expiry.add((ExpiryRef::Positive(keyref, index)), ttl);
Dec 04 21:45:57.749 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 21:45:57.749 INFO [stderr]     |
Dec 04 21:45:57.750 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 04 21:45:57.750 INFO [stderr] 
Dec 04 21:45:58.003 INFO [stderr] warning: value assigned to `nocache` is never read
Dec 04 21:45:58.003 INFO [stderr]    --> src/dnsutils/mod.rs:341:17
Dec 04 21:45:58.003 INFO [stderr]     |
Dec 04 21:45:58.003 INFO [stderr] 341 |         let mut nocache = false;
Dec 04 21:45:58.003 INFO [stderr]     |                 ^^^^^^^
Dec 04 21:45:58.003 INFO [stderr]     |
Dec 04 21:45:58.003 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 04 21:45:58.003 INFO [stderr] 
Dec 04 21:45:58.011 INFO [stderr] warning: unused variable: `expiry`
Dec 04 21:45:58.011 INFO [stderr]    --> src/dnsutils/mod.rs:462:13
Dec 04 21:45:58.011 INFO [stderr]     |
Dec 04 21:45:58.011 INFO [stderr] 462 |         let expiry = SystemTime::now() + ttl;
Dec 04 21:45:58.011 INFO [stderr]     |             ^^^^^^ help: consider using `_expiry` instead
Dec 04 21:45:58.011 INFO [stderr]     |
Dec 04 21:45:58.011 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:45:58.011 INFO [stderr] 
Dec 04 21:45:58.146 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.146 INFO [stderr]    --> src/dnsutils/mod.rs:161:19
Dec 04 21:45:58.146 INFO [stderr]     |
Dec 04 21:45:58.146 INFO [stderr] 161 |     fn send_query(mut bufvec: &mut Vec<u8>, qname: &String, qtype: RecordType, sock: &mut UdpSocket, to: &SocketAddr, id: u16) {
Dec 04 21:45:58.146 INFO [stderr]     |                   ----^^^^^^
Dec 04 21:45:58.146 INFO [stderr]     |                   |
Dec 04 21:45:58.146 INFO [stderr]     |                   help: remove this `mut`
Dec 04 21:45:58.146 INFO [stderr]     |
Dec 04 21:45:58.146 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 21:45:58.146 INFO [stderr] 
Dec 04 21:45:58.169 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.169 INFO [stderr]    --> src/dnsutils/mod.rs:203:13
Dec 04 21:45:58.169 INFO [stderr]     |
Dec 04 21:45:58.169 INFO [stderr] 203 |         let mut recv;
Dec 04 21:45:58.169 INFO [stderr]     |             ----^^^^
Dec 04 21:45:58.169 INFO [stderr]     |             |
Dec 04 21:45:58.169 INFO [stderr]     |             help: remove this `mut`
Dec 04 21:45:58.169 INFO [stderr] 
Dec 04 21:45:58.171 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.171 INFO [stderr]    --> src/dnsutils/mod.rs:316:17
Dec 04 21:45:58.171 INFO [stderr]     |
Dec 04 21:45:58.171 INFO [stderr] 316 |             let mut res = self.resolving.get_mut(&(qname.clone(), qtype));
Dec 04 21:45:58.171 INFO [stderr]     |                 ----^^^
Dec 04 21:45:58.171 INFO [stderr]     |                 |
Dec 04 21:45:58.171 INFO [stderr]     |                 help: remove this `mut`
Dec 04 21:45:58.171 INFO [stderr] 
Dec 04 21:45:58.171 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.171 INFO [stderr]    --> src/dnsutils/mod.rs:344:17
Dec 04 21:45:58.171 INFO [stderr]     |
Dec 04 21:45:58.171 INFO [stderr] 344 |             let mut preferred_cache = preferred_cache.unwrap();
Dec 04 21:45:58.171 INFO [stderr]     |                 ----^^^^^^^^^^^^^^^
Dec 04 21:45:58.171 INFO [stderr]     |                 |
Dec 04 21:45:58.171 INFO [stderr]     |                 help: remove this `mut`
Dec 04 21:45:58.171 INFO [stderr] 
Dec 04 21:45:58.178 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.178 INFO [stderr]    --> src/dnsutils/mod.rs:434:25
Dec 04 21:45:58.178 INFO [stderr]     |
Dec 04 21:45:58.178 INFO [stderr] 434 |                     let mut records = rec.unwrap();
Dec 04 21:45:58.178 INFO [stderr]     |                         ----^^^^^^^
Dec 04 21:45:58.178 INFO [stderr]     |                         |
Dec 04 21:45:58.178 INFO [stderr]     |                         help: remove this `mut`
Dec 04 21:45:58.178 INFO [stderr] 
Dec 04 21:45:58.194 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.194 INFO [stderr]    --> src/dnsutils/mod.rs:494:21
Dec 04 21:45:58.194 INFO [stderr]     |
Dec 04 21:45:58.194 INFO [stderr] 494 |                 let mut record = result.unwrap();
Dec 04 21:45:58.194 INFO [stderr]     |                     ----^^^^^^
Dec 04 21:45:58.194 INFO [stderr]     |                     |
Dec 04 21:45:58.194 INFO [stderr]     |                     help: remove this `mut`
Dec 04 21:45:58.194 INFO [stderr] 
Dec 04 21:45:58.198 INFO [stderr] warning: value assigned to `nocache` is never read
Dec 04 21:45:58.198 INFO [stderr]    --> src/dnsutils/mod.rs:341:17
Dec 04 21:45:58.198 INFO [stderr]     |
Dec 04 21:45:58.198 INFO [stderr] 341 |         let mut nocache = false;
Dec 04 21:45:58.198 INFO [stderr]     |                 ^^^^^^^
Dec 04 21:45:58.198 INFO [stderr]     |
Dec 04 21:45:58.198 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 04 21:45:58.199 INFO [stderr] 
Dec 04 21:45:58.203 INFO [stderr] warning: unused variable: `expiry`
Dec 04 21:45:58.203 INFO [stderr]    --> src/dnsutils/mod.rs:462:13
Dec 04 21:45:58.203 INFO [stderr]     |
Dec 04 21:45:58.203 INFO [stderr] 462 |         let expiry = SystemTime::now() + ttl;
Dec 04 21:45:58.203 INFO [stderr]     |             ^^^^^^ help: consider using `_expiry` instead
Dec 04 21:45:58.203 INFO [stderr]     |
Dec 04 21:45:58.203 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:45:58.203 INFO [stderr] 
Dec 04 21:45:58.220 INFO [stderr] warning: field is never used: `encoding`
Dec 04 21:45:58.220 INFO [stderr]   --> src/dnsutils/mod.rs:85:5
Dec 04 21:45:58.220 INFO [stderr]    |
Dec 04 21:45:58.220 INFO [stderr] 85 |     encoding: HashMap<String, &'a String>, // 0x20 encoding
Dec 04 21:45:58.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.220 INFO [stderr]    |
Dec 04 21:45:58.220 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 21:45:58.220 INFO [stderr] 
Dec 04 21:45:58.220 INFO [stderr] warning: field is never used: `resolve_parallel`
Dec 04 21:45:58.220 INFO [stderr]   --> src/dnsutils/mod.rs:91:5
Dec 04 21:45:58.220 INFO [stderr]    |
Dec 04 21:45:58.220 INFO [stderr] 91 |     resolve_parallel: bool,
Dec 04 21:45:58.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.220 INFO [stderr] 
Dec 04 21:45:58.220 INFO [stderr] warning: field is never used: `round_robin`
Dec 04 21:45:58.220 INFO [stderr]   --> src/dnsutils/mod.rs:94:5
Dec 04 21:45:58.220 INFO [stderr]    |
Dec 04 21:45:58.220 INFO [stderr] 94 |     round_robin: RoundRobin,
Dec 04 21:45:58.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.220 INFO [stderr] 
Dec 04 21:45:58.220 INFO [stderr] warning: field is never used: `round_robin_index`
Dec 04 21:45:58.220 INFO [stderr]   --> src/dnsutils/mod.rs:95:5
Dec 04 21:45:58.220 INFO [stderr]    |
Dec 04 21:45:58.220 INFO [stderr] 95 |     round_robin_index: usize,
Dec 04 21:45:58.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.220 INFO [stderr] 
Dec 04 21:45:58.226 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.226 INFO [stderr]    --> src/dnsutils/mod.rs:164:9
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr] 164 |         sock.send_to(msg.to_vec().unwrap().as_slice(), to);
Dec 04 21:45:58.226 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 21:45:58.226 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.226 INFO [stderr] 
Dec 04 21:45:58.226 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.226 INFO [stderr]    --> src/dnsutils/mod.rs:192:13
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr] 192 |             poll.register(self.socket4.as_mut().unwrap(), Token(start_token + added), Ready::readable(), PollOpt::edge());
Dec 04 21:45:58.226 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.226 INFO [stderr] 
Dec 04 21:45:58.226 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.226 INFO [stderr]    --> src/dnsutils/mod.rs:196:13
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr] 196 |             poll.register(self.socket6.as_mut().unwrap(), Token(start_token + added), Ready::readable(), PollOpt::edge());
Dec 04 21:45:58.226 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.226 INFO [stderr]     |
Dec 04 21:45:58.226 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.226 INFO [stderr] 
Dec 04 21:45:58.362 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.362 INFO [stderr]    --> src/dnsutils/mod.rs:161:19
Dec 04 21:45:58.362 INFO [stderr]     |
Dec 04 21:45:58.362 INFO [stderr] 161 |     fn send_query(mut bufvec: &mut Vec<u8>, qname: &String, qtype: RecordType, sock: &mut UdpSocket, to: &SocketAddr, id: u16) {
Dec 04 21:45:58.362 INFO [stderr]     |                   ----^^^^^^
Dec 04 21:45:58.362 INFO [stderr]     |                   |
Dec 04 21:45:58.362 INFO [stderr]     |                   help: remove this `mut`
Dec 04 21:45:58.362 INFO [stderr]     |
Dec 04 21:45:58.362 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 21:45:58.362 INFO [stderr] 
Dec 04 21:45:58.381 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.381 INFO [stderr]    --> src/dnsutils/mod.rs:203:13
Dec 04 21:45:58.381 INFO [stderr]     |
Dec 04 21:45:58.381 INFO [stderr] 203 |         let mut recv;
Dec 04 21:45:58.381 INFO [stderr]     |             ----^^^^
Dec 04 21:45:58.381 INFO [stderr]     |             |
Dec 04 21:45:58.381 INFO [stderr]     |             help: remove this `mut`
Dec 04 21:45:58.381 INFO [stderr] 
Dec 04 21:45:58.383 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.383 INFO [stderr]    --> src/dnsutils/mod.rs:316:17
Dec 04 21:45:58.383 INFO [stderr]     |
Dec 04 21:45:58.383 INFO [stderr] 316 |             let mut res = self.resolving.get_mut(&(qname.clone(), qtype));
Dec 04 21:45:58.383 INFO [stderr]     |                 ----^^^
Dec 04 21:45:58.383 INFO [stderr]     |                 |
Dec 04 21:45:58.383 INFO [stderr]     |                 help: remove this `mut`
Dec 04 21:45:58.383 INFO [stderr] 
Dec 04 21:45:58.383 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.383 INFO [stderr]    --> src/dnsutils/mod.rs:344:17
Dec 04 21:45:58.383 INFO [stderr]     |
Dec 04 21:45:58.383 INFO [stderr] 344 |             let mut preferred_cache = preferred_cache.unwrap();
Dec 04 21:45:58.383 INFO [stderr]     |                 ----^^^^^^^^^^^^^^^
Dec 04 21:45:58.383 INFO [stderr]     |                 |
Dec 04 21:45:58.383 INFO [stderr]     |                 help: remove this `mut`
Dec 04 21:45:58.383 INFO [stderr] 
Dec 04 21:45:58.390 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.390 INFO [stderr]    --> src/dnsutils/mod.rs:434:25
Dec 04 21:45:58.390 INFO [stderr]     |
Dec 04 21:45:58.390 INFO [stderr] 434 |                     let mut records = rec.unwrap();
Dec 04 21:45:58.390 INFO [stderr]     |                         ----^^^^^^^
Dec 04 21:45:58.390 INFO [stderr]     |                         |
Dec 04 21:45:58.390 INFO [stderr]     |                         help: remove this `mut`
Dec 04 21:45:58.390 INFO [stderr] 
Dec 04 21:45:58.393 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:45:58.393 INFO [stderr]    --> src/dnsutils/mod.rs:494:21
Dec 04 21:45:58.393 INFO [stderr]     |
Dec 04 21:45:58.393 INFO [stderr] 494 |                 let mut record = result.unwrap();
Dec 04 21:45:58.393 INFO [stderr]     |                     ----^^^^^^
Dec 04 21:45:58.393 INFO [stderr]     |                     |
Dec 04 21:45:58.393 INFO [stderr]     |                     help: remove this `mut`
Dec 04 21:45:58.393 INFO [stderr] 
Dec 04 21:45:58.410 INFO [stderr] warning: field is never used: `encoding`
Dec 04 21:45:58.410 INFO [stderr]   --> src/dnsutils/mod.rs:85:5
Dec 04 21:45:58.410 INFO [stderr]    |
Dec 04 21:45:58.410 INFO [stderr] 85 |     encoding: HashMap<String, &'a String>, // 0x20 encoding
Dec 04 21:45:58.410 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.410 INFO [stderr]    |
Dec 04 21:45:58.410 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 21:45:58.410 INFO [stderr] 
Dec 04 21:45:58.410 INFO [stderr] warning: field is never used: `resolve_parallel`
Dec 04 21:45:58.410 INFO [stderr]   --> src/dnsutils/mod.rs:91:5
Dec 04 21:45:58.411 INFO [stderr]    |
Dec 04 21:45:58.411 INFO [stderr] 91 |     resolve_parallel: bool,
Dec 04 21:45:58.411 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.411 INFO [stderr] 
Dec 04 21:45:58.411 INFO [stderr] warning: field is never used: `round_robin`
Dec 04 21:45:58.411 INFO [stderr]   --> src/dnsutils/mod.rs:94:5
Dec 04 21:45:58.411 INFO [stderr]    |
Dec 04 21:45:58.411 INFO [stderr] 94 |     round_robin: RoundRobin,
Dec 04 21:45:58.411 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.411 INFO [stderr] 
Dec 04 21:45:58.411 INFO [stderr] warning: field is never used: `round_robin_index`
Dec 04 21:45:58.411 INFO [stderr]   --> src/dnsutils/mod.rs:95:5
Dec 04 21:45:58.411 INFO [stderr]    |
Dec 04 21:45:58.411 INFO [stderr] 95 |     round_robin_index: usize,
Dec 04 21:45:58.411 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.411 INFO [stderr] 
Dec 04 21:45:58.416 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.416 INFO [stderr]    --> src/dnsutils/mod.rs:164:9
Dec 04 21:45:58.416 INFO [stderr]     |
Dec 04 21:45:58.416 INFO [stderr] 164 |         sock.send_to(msg.to_vec().unwrap().as_slice(), to);
Dec 04 21:45:58.416 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.416 INFO [stderr]     |
Dec 04 21:45:58.416 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 21:45:58.416 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.416 INFO [stderr] 
Dec 04 21:45:58.416 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.416 INFO [stderr]    --> src/dnsutils/mod.rs:192:13
Dec 04 21:45:58.416 INFO [stderr]     |
Dec 04 21:45:58.416 INFO [stderr] 192 |             poll.register(self.socket4.as_mut().unwrap(), Token(start_token + added), Ready::readable(), PollOpt::edge());
Dec 04 21:45:58.416 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.416 INFO [stderr]     |
Dec 04 21:45:58.416 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.416 INFO [stderr] 
Dec 04 21:45:58.417 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:45:58.417 INFO [stderr]    --> src/dnsutils/mod.rs:196:13
Dec 04 21:45:58.417 INFO [stderr]     |
Dec 04 21:45:58.417 INFO [stderr] 196 |             poll.register(self.socket6.as_mut().unwrap(), Token(start_token + added), Ready::readable(), PollOpt::edge());
Dec 04 21:45:58.417 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:45:58.417 INFO [stderr]     |
Dec 04 21:45:58.417 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:45:58.417 INFO [stderr] 
Dec 04 21:45:58.473 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.54s
Dec 04 21:45:58.487 INFO [stderr] su: No module specific data is present
Dec 04 21:45:59.448 INFO running `"docker" "inspect" "cafc00fbf4f9c35948840592c2eef81d567c9e0f9710e261938be7246cd5f73a"`
Dec 04 21:45:59.569 INFO running `"docker" "rm" "-f" "cafc00fbf4f9c35948840592c2eef81d567c9e0f9710e261938be7246cd5f73a"`
Dec 04 21:45:59.701 INFO [stdout] cafc00fbf4f9c35948840592c2eef81d567c9e0f9710e261938be7246cd5f73a