[INFO] fetching crate fastcgi 1.0.0...
[INFO] testing fastcgi-1.0.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate fastcgi 1.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fastcgi 1.0.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fastcgi 1.0.0
[INFO] finished tweaking crates.io crate fastcgi 1.0.0
[INFO] tweaked toml for crates.io crate fastcgi 1.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c2a41156bfd1fa26b338109ee25f7e7f874bdf6d845d918a5e700b5acec14472
[INFO] running `"docker" "start" "-a" "c2a41156bfd1fa26b338109ee25f7e7f874bdf6d845d918a5e700b5acec14472"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fastcgi v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     try!((&mut r).take(1).read_to_end(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |             assert!(try!((&mut r).take(3).read_to_end(&mut buf)) == 3);
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let key_len = try!(read_len(r));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let value_len = try!(read_len(r));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |     assert!(try!((&mut r).take(key_len as u64).read_to_string(&mut key)) == key_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert!(try!((&mut r).take(value_len as u64).read_to_string(&mut value)) == value_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |             params.extend(try!(read_pairs(r)).into_iter());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(w.write_all(&[n as u8]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(w.write_all(&buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(write_len(w, key.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         try!(write_len(w, value.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         try!(write!(w, "{}{}", key, value));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     try!(w.write_all(&[
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(w.write_all(content));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert!(try!(r.take(HEADER_LEN as u64).read_to_end(&mut header)) == HEADER_LEN);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |     assert!(try!(r.take(content_length as u64).read_to_end(&mut content)) == content_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     assert!(try!(r.take(padding_length as u64).read_to_end(&mut Vec::with_capacity(padding_length as usize))) == padding_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 try!(write_record(w, 3, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 try!(write_record(w, 6, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write_record(w, 7, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 try!(write_pairs(&mut content, items));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 try!(write_record(w, 10, 0, &content.into_inner()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 try!(write_record(w, 11, 0, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:226:50
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let (record_type, request_id, content) = try!(read_record(r));
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:250:29
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 let items = try!(read_pairs(&mut Cursor::new(content)));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:287:24
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 match (try!(Record::receive(&mut sock)), self.req.filter_data) {
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:289:25
[INFO] [stderr]     |
[INFO] [stderr] 289 |                         try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:292:25
[INFO] [stderr]     |
[INFO] [stderr] 292 |                         try!(
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:25
[INFO] [stderr]     |
[INFO] [stderr] 298 |                         try!(Record::EndRequest {
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:340:29
[INFO] [stderr]     |
[INFO] [stderr] 340 |             let mut chunk = try!(self.fill_buf());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:341:13
[INFO] [stderr]     |
[INFO] [stderr] 341 |             try!(chunk.read(buf))
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 | writer!(Stdout);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 382 | writer!(Stderr);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:419:19
[INFO] [stderr]     |
[INFO] [stderr] 419 |             match try!(Record::receive(&mut sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                     try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:424:21
[INFO] [stderr]     |
[INFO] [stderr] 424 |                     try!(Record::GetValuesResult(get_values(keys)).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:446:19
[INFO] [stderr]     |
[INFO] [stderr] 446 |             match try!(Record::receive(&mut &*sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:448:21
[INFO] [stderr]     |
[INFO] [stderr] 448 |                     try!(Record::UnknownType(rec_type).send(&mut &*sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:451:21
[INFO] [stderr]     |
[INFO] [stderr] 451 |                     try!(
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:457:21
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:477:39
[INFO] [stderr]     |
[INFO] [stderr] 477 |                         params.extend(try!(read_pairs(&mut Cursor::new(&buf))));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 | pub type Params<'a> = Box<Iterator<Item = (String, String)> + 'a>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (String, String)> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:132:24
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn write_len<W: Write>(mut w: &mut W, n: u32) -> io::Result<()> {
[INFO] [stderr]     |                        ----^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 44 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "c2a41156bfd1fa26b338109ee25f7e7f874bdf6d845d918a5e700b5acec14472"`
[INFO] running `"docker" "rm" "-f" "c2a41156bfd1fa26b338109ee25f7e7f874bdf6d845d918a5e700b5acec14472"`
[INFO] [stdout] c2a41156bfd1fa26b338109ee25f7e7f874bdf6d845d918a5e700b5acec14472
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2361efc57671b355d9460f4a6b5913bba8b2f406ba570ec9eeb52d40007777d3
[INFO] running `"docker" "start" "-a" "2361efc57671b355d9460f4a6b5913bba8b2f406ba570ec9eeb52d40007777d3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     try!((&mut r).take(1).read_to_end(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |             assert!(try!((&mut r).take(3).read_to_end(&mut buf)) == 3);
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let key_len = try!(read_len(r));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling fastcgi v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let value_len = try!(read_len(r));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |     assert!(try!((&mut r).take(key_len as u64).read_to_string(&mut key)) == key_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert!(try!((&mut r).take(value_len as u64).read_to_string(&mut value)) == value_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |             params.extend(try!(read_pairs(r)).into_iter());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(w.write_all(&[n as u8]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(w.write_all(&buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(write_len(w, key.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         try!(write_len(w, value.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         try!(write!(w, "{}{}", key, value));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     try!(w.write_all(&[
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(w.write_all(content));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert!(try!(r.take(HEADER_LEN as u64).read_to_end(&mut header)) == HEADER_LEN);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |     assert!(try!(r.take(content_length as u64).read_to_end(&mut content)) == content_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     assert!(try!(r.take(padding_length as u64).read_to_end(&mut Vec::with_capacity(padding_length as usize))) == padding_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 try!(write_record(w, 3, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 try!(write_record(w, 6, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write_record(w, 7, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 try!(write_pairs(&mut content, items));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 try!(write_record(w, 10, 0, &content.into_inner()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 try!(write_record(w, 11, 0, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:226:50
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let (record_type, request_id, content) = try!(read_record(r));
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:250:29
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 let items = try!(read_pairs(&mut Cursor::new(content)));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:287:24
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 match (try!(Record::receive(&mut sock)), self.req.filter_data) {
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:289:25
[INFO] [stderr]     |
[INFO] [stderr] 289 |                         try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:292:25
[INFO] [stderr]     |
[INFO] [stderr] 292 |                         try!(
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:25
[INFO] [stderr]     |
[INFO] [stderr] 298 |                         try!(Record::EndRequest {
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:340:29
[INFO] [stderr]     |
[INFO] [stderr] 340 |             let mut chunk = try!(self.fill_buf());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:341:13
[INFO] [stderr]     |
[INFO] [stderr] 341 |             try!(chunk.read(buf))
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 | writer!(Stdout);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 382 | writer!(Stderr);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:419:19
[INFO] [stderr]     |
[INFO] [stderr] 419 |             match try!(Record::receive(&mut sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                     try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:424:21
[INFO] [stderr]     |
[INFO] [stderr] 424 |                     try!(Record::GetValuesResult(get_values(keys)).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:446:19
[INFO] [stderr]     |
[INFO] [stderr] 446 |             match try!(Record::receive(&mut &*sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:448:21
[INFO] [stderr]     |
[INFO] [stderr] 448 |                     try!(Record::UnknownType(rec_type).send(&mut &*sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:451:21
[INFO] [stderr]     |
[INFO] [stderr] 451 |                     try!(
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:457:21
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:477:39
[INFO] [stderr]     |
[INFO] [stderr] 477 |                         params.extend(try!(read_pairs(&mut Cursor::new(&buf))));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 | pub type Params<'a> = Box<Iterator<Item = (String, String)> + 'a>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (String, String)> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:132:24
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn write_len<W: Write>(mut w: &mut W, n: u32) -> io::Result<()> {
[INFO] [stderr]     |                        ----^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 44 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     try!((&mut r).take(1).read_to_end(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |             assert!(try!((&mut r).take(3).read_to_end(&mut buf)) == 3);
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let key_len = try!(read_len(r));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let value_len = try!(read_len(r));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |     assert!(try!((&mut r).take(key_len as u64).read_to_string(&mut key)) == key_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert!(try!((&mut r).take(value_len as u64).read_to_string(&mut value)) == value_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |             params.extend(try!(read_pairs(r)).into_iter());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(w.write_all(&[n as u8]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(w.write_all(&buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(write_len(w, key.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         try!(write_len(w, value.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         try!(write!(w, "{}{}", key, value));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     try!(w.write_all(&[
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(w.write_all(content));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert!(try!(r.take(HEADER_LEN as u64).read_to_end(&mut header)) == HEADER_LEN);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |     assert!(try!(r.take(content_length as u64).read_to_end(&mut content)) == content_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     assert!(try!(r.take(padding_length as u64).read_to_end(&mut Vec::with_capacity(padding_length as usize))) == padding_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 try!(write_record(w, 3, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 try!(write_record(w, 6, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write_record(w, 7, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 try!(write_pairs(&mut content, items));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 try!(write_record(w, 10, 0, &content.into_inner()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 try!(write_record(w, 11, 0, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:226:50
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let (record_type, request_id, content) = try!(read_record(r));
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:250:29
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 let items = try!(read_pairs(&mut Cursor::new(content)));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:287:24
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 match (try!(Record::receive(&mut sock)), self.req.filter_data) {
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:289:25
[INFO] [stderr]     |
[INFO] [stderr] 289 |                         try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:292:25
[INFO] [stderr]     |
[INFO] [stderr] 292 |                         try!(
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:25
[INFO] [stderr]     |
[INFO] [stderr] 298 |                         try!(Record::EndRequest {
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:340:29
[INFO] [stderr]     |
[INFO] [stderr] 340 |             let mut chunk = try!(self.fill_buf());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:341:13
[INFO] [stderr]     |
[INFO] [stderr] 341 |             try!(chunk.read(buf))
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 | writer!(Stdout);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 382 | writer!(Stderr);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:419:19
[INFO] [stderr]     |
[INFO] [stderr] 419 |             match try!(Record::receive(&mut sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                     try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:424:21
[INFO] [stderr]     |
[INFO] [stderr] 424 |                     try!(Record::GetValuesResult(get_values(keys)).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:446:19
[INFO] [stderr]     |
[INFO] [stderr] 446 |             match try!(Record::receive(&mut &*sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:448:21
[INFO] [stderr]     |
[INFO] [stderr] 448 |                     try!(Record::UnknownType(rec_type).send(&mut &*sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:451:21
[INFO] [stderr]     |
[INFO] [stderr] 451 |                     try!(
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:457:21
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:477:39
[INFO] [stderr]     |
[INFO] [stderr] 477 |                         params.extend(try!(read_pairs(&mut Cursor::new(&buf))));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 | pub type Params<'a> = Box<Iterator<Item = (String, String)> + 'a>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (String, String)> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:132:24
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn write_len<W: Write>(mut w: &mut W, n: u32) -> io::Result<()> {
[INFO] [stderr]     |                        ----^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 44 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "2361efc57671b355d9460f4a6b5913bba8b2f406ba570ec9eeb52d40007777d3"`
[INFO] running `"docker" "rm" "-f" "2361efc57671b355d9460f4a6b5913bba8b2f406ba570ec9eeb52d40007777d3"`
[INFO] [stdout] 2361efc57671b355d9460f4a6b5913bba8b2f406ba570ec9eeb52d40007777d3
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 034c333b7273510296e99feaa17549886a450d1ffa353f60be6d8eb602a3c156
[INFO] running `"docker" "start" "-a" "034c333b7273510296e99feaa17549886a450d1ffa353f60be6d8eb602a3c156"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     try!((&mut r).take(1).read_to_end(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |             assert!(try!((&mut r).take(3).read_to_end(&mut buf)) == 3);
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let key_len = try!(read_len(r));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let value_len = try!(read_len(r));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |     assert!(try!((&mut r).take(key_len as u64).read_to_string(&mut key)) == key_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert!(try!((&mut r).take(value_len as u64).read_to_string(&mut value)) == value_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |             params.extend(try!(read_pairs(r)).into_iter());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(w.write_all(&[n as u8]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(w.write_all(&buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(write_len(w, key.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         try!(write_len(w, value.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         try!(write!(w, "{}{}", key, value));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     try!(w.write_all(&[
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(w.write_all(content));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert!(try!(r.take(HEADER_LEN as u64).read_to_end(&mut header)) == HEADER_LEN);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |     assert!(try!(r.take(content_length as u64).read_to_end(&mut content)) == content_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     assert!(try!(r.take(padding_length as u64).read_to_end(&mut Vec::with_capacity(padding_length as usize))) == padding_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 try!(write_record(w, 3, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 try!(write_record(w, 6, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write_record(w, 7, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 try!(write_pairs(&mut content, items));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 try!(write_record(w, 10, 0, &content.into_inner()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 try!(write_record(w, 11, 0, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:226:50
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let (record_type, request_id, content) = try!(read_record(r));
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:250:29
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 let items = try!(read_pairs(&mut Cursor::new(content)));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:287:24
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 match (try!(Record::receive(&mut sock)), self.req.filter_data) {
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:289:25
[INFO] [stderr]     |
[INFO] [stderr] 289 |                         try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:292:25
[INFO] [stderr]     |
[INFO] [stderr] 292 |                         try!(
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:25
[INFO] [stderr]     |
[INFO] [stderr] 298 |                         try!(Record::EndRequest {
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:340:29
[INFO] [stderr]     |
[INFO] [stderr] 340 |             let mut chunk = try!(self.fill_buf());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:341:13
[INFO] [stderr]     |
[INFO] [stderr] 341 |             try!(chunk.read(buf))
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 | writer!(Stdout);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 382 | writer!(Stderr);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:419:19
[INFO] [stderr]     |
[INFO] [stderr] 419 |             match try!(Record::receive(&mut sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                     try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:424:21
[INFO] [stderr]     |
[INFO] [stderr] 424 |                     try!(Record::GetValuesResult(get_values(keys)).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:446:19
[INFO] [stderr]     |
[INFO] [stderr] 446 |             match try!(Record::receive(&mut &*sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:448:21
[INFO] [stderr]     |
[INFO] [stderr] 448 |                     try!(Record::UnknownType(rec_type).send(&mut &*sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:451:21
[INFO] [stderr]     |
[INFO] [stderr] 451 |                     try!(
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:457:21
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:477:39
[INFO] [stderr]     |
[INFO] [stderr] 477 |                         params.extend(try!(read_pairs(&mut Cursor::new(&buf))));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 | pub type Params<'a> = Box<Iterator<Item = (String, String)> + 'a>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (String, String)> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:132:24
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn write_len<W: Write>(mut w: &mut W, n: u32) -> io::Result<()> {
[INFO] [stderr]     |                        ----^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 44 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     try!((&mut r).take(1).read_to_end(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |             assert!(try!((&mut r).take(3).read_to_end(&mut buf)) == 3);
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let key_len = try!(read_len(r));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let value_len = try!(read_len(r));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |     assert!(try!((&mut r).take(key_len as u64).read_to_string(&mut key)) == key_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert!(try!((&mut r).take(value_len as u64).read_to_string(&mut value)) == value_len as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |             params.extend(try!(read_pairs(r)).into_iter());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |         try!(w.write_all(&[n as u8]));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(w.write_all(&buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         try!(write_len(w, key.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         try!(write_len(w, value.len() as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 |         try!(write!(w, "{}{}", key, value));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     try!(w.write_all(&[
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     try!(w.write_all(content));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |     assert!(try!(r.take(HEADER_LEN as u64).read_to_end(&mut header)) == HEADER_LEN);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |     assert!(try!(r.take(content_length as u64).read_to_end(&mut content)) == content_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |     assert!(try!(r.take(padding_length as u64).read_to_end(&mut Vec::with_capacity(padding_length as usize))) == padding_length as usize);
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 try!(write_record(w, 3, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:17
[INFO] [stderr]     |
[INFO] [stderr] 206 |                 try!(write_record(w, 6, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write_record(w, 7, request_id, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 try!(write_pairs(&mut content, items));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:214:17
[INFO] [stderr]     |
[INFO] [stderr] 214 |                 try!(write_record(w, 10, 0, &content.into_inner()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 try!(write_record(w, 11, 0, &content));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:226:50
[INFO] [stderr]     |
[INFO] [stderr] 226 |         let (record_type, request_id, content) = try!(read_record(r));
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:250:29
[INFO] [stderr]     |
[INFO] [stderr] 250 |                 let items = try!(read_pairs(&mut Cursor::new(content)));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:287:24
[INFO] [stderr]     |
[INFO] [stderr] 287 |                 match (try!(Record::receive(&mut sock)), self.req.filter_data) {
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:289:25
[INFO] [stderr]     |
[INFO] [stderr] 289 |                         try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:292:25
[INFO] [stderr]     |
[INFO] [stderr] 292 |                         try!(
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:298:25
[INFO] [stderr]     |
[INFO] [stderr] 298 |                         try!(Record::EndRequest {
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:340:29
[INFO] [stderr]     |
[INFO] [stderr] 340 |             let mut chunk = try!(self.fill_buf());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:341:13
[INFO] [stderr]     |
[INFO] [stderr] 341 |             try!(chunk.read(buf))
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 380 | writer!(Stdout);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:367:25
[INFO] [stderr]     |
[INFO] [stderr] 367 |                         try!(rec.send(&mut &*self.req.sock));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 382 | writer!(Stderr);
[INFO] [stderr]     | ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:419:19
[INFO] [stderr]     |
[INFO] [stderr] 419 |             match try!(Record::receive(&mut sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                     try!(Record::UnknownType(rec_type).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:424:21
[INFO] [stderr]     |
[INFO] [stderr] 424 |                     try!(Record::GetValuesResult(get_values(keys)).send(&mut sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:446:19
[INFO] [stderr]     |
[INFO] [stderr] 446 |             match try!(Record::receive(&mut &*sock)) {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:448:21
[INFO] [stderr]     |
[INFO] [stderr] 448 |                     try!(Record::UnknownType(rec_type).send(&mut &*sock));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:451:21
[INFO] [stderr]     |
[INFO] [stderr] 451 |                     try!(
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:457:21
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     try!(Record::EndRequest {
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:477:39
[INFO] [stderr]     |
[INFO] [stderr] 477 |                         params.extend(try!(read_pairs(&mut Cursor::new(&buf))));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 | pub type Params<'a> = Box<Iterator<Item = (String, String)> + 'a>;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (String, String)> + 'a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:132:24
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn write_len<W: Write>(mut w: &mut W, n: u32) -> io::Result<()> {
[INFO] [stderr]     |                        ----^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 44 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fastcgi-fd520904dac4da8f
[INFO] [stderr]    Doc-tests fastcgi
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 31) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 31) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'Socket operation on non-socket (os error 88)', /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/macros.rs:13:23
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5629284f00a4 - backtrace::backtrace::libunwind::trace::hc1c4a1d8ad423b97
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stdout]    1:     0x5629284f00a4 - backtrace::backtrace::trace_unsynchronized::h82274781060cb056
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x5629284f00a4 - std::sys_common::backtrace::_print_fmt::h2a45d89b653a4da8
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stdout]    3:     0x5629284f00a4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h41a0a93ab85e6aa1
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stdout]    4:     0x56292850eaec - core::fmt::write::hdaea18585065a96d
[INFO] [stdout]                                at src/libcore/fmt/mod.rs:1069
[INFO] [stdout]    5:     0x5629284ecb73 - std::io::Write::write_fmt::h0cea70c809005252
[INFO] [stdout]                                at src/libstd/io/mod.rs:1504
[INFO] [stdout]    6:     0x5629284f2825 - std::sys_common::backtrace::_print::hd95f9978cc145ca4
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stdout]    7:     0x5629284f2825 - std::sys_common::backtrace::print::hfb25ca2291be47d0
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stdout]    8:     0x5629284f2825 - std::panicking::default_hook::{{closure}}::h44f76cee5dc8591c
[INFO] [stdout]                                at src/libstd/panicking.rs:198
[INFO] [stdout]    9:     0x5629284f2562 - std::panicking::default_hook::h198e1a712910f1e6
[INFO] [stdout]                                at src/libstd/panicking.rs:218
[INFO] [stdout]   10:     0x5629284f2e32 - std::panicking::rust_panic_with_hook::hc0b4730bb8013f9d
[INFO] [stdout]                                at src/libstd/panicking.rs:511
[INFO] [stdout]   11:     0x5629284b5837 - std::panicking::begin_panic::h202fd3a925b1c4a4
[INFO] [stdout]   12:     0x5629284bc49f - fastcgi::run_transport::he34c3000c4ebd7b8
[INFO] [stdout]   13:     0x5629284bc9e4 - fastcgi::run::h3e3f9be777cc1595
[INFO] [stdout]   14:     0x5629284c20e6 - rust_out::main::hce5147e828914a17
[INFO] [stdout]   15:     0x5629284b4ce3 - std::rt::lang_start::{{closure}}::hb15f61f8249547b1
[INFO] [stdout]   16:     0x5629284f3278 - std::rt::lang_start_internal::{{closure}}::h7a212202ff76034b
[INFO] [stdout]                                at src/libstd/rt.rs:52
[INFO] [stdout]   17:     0x5629284f3278 - std::panicking::try::do_call::h6d214a73427d759b
[INFO] [stdout]                                at src/libstd/panicking.rs:331
[INFO] [stdout]   18:     0x5629284f3278 - std::panicking::try::hc078f0e11721d1cb
[INFO] [stdout]                                at src/libstd/panicking.rs:274
[INFO] [stdout]   19:     0x5629284f3278 - std::panic::catch_unwind::hb31c05be30625612
[INFO] [stdout]                                at src/libstd/panic.rs:394
[INFO] [stdout]   20:     0x5629284f3278 - std::rt::lang_start_internal::hcf7fb98a775d5af0
[INFO] [stdout]                                at src/libstd/rt.rs:51
[INFO] [stdout]   21:     0x5629284b4cc8 - std::rt::lang_start::h80cabc1387d7a5d8
[INFO] [stdout]   22:     0x5629284c220b - main
[INFO] [stdout]   23:     0x7f877d41e0b3 - __libc_start_main
[INFO] [stdout]   24:     0x5629284b417e - _start
[INFO] [stdout]   25:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 31)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "034c333b7273510296e99feaa17549886a450d1ffa353f60be6d8eb602a3c156"`
[INFO] running `"docker" "rm" "-f" "034c333b7273510296e99feaa17549886a450d1ffa353f60be6d8eb602a3c156"`
[INFO] [stdout] 034c333b7273510296e99feaa17549886a450d1ffa353f60be6d8eb602a3c156