[INFO] crate rmp-serialize 0.8.1 is already in cache
[INFO] checking rmp-serialize-0.8.1 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate rmp-serialize 0.8.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rmp-serialize 0.8.1 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rmp-serialize 0.8.1
[INFO] finished tweaking crates.io crate rmp-serialize 0.8.1
[INFO] tweaked toml for crates.io crate rmp-serialize 0.8.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f850fd72bbfd8fa836a7379b9233e383ab3b2f168d60a793b7b9af6488aae79c
[INFO] running `"docker" "start" "-a" "f850fd72bbfd8fa836a7379b9233e383ab3b2f168d60a793b7b9af6488aae79c"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking rmp-serialize v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:122:12
[INFO] [stderr]     |
[INFO] [stderr] 122 |         Ok(try!(read_nil(&mut self.rd)))
[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/decode.rs:126:12
[INFO] [stderr]     |
[INFO] [stderr] 126 |         Ok(try!(read_bool(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:130:12
[INFO] [stderr]     |
[INFO] [stderr] 130 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:134:12
[INFO] [stderr]     |
[INFO] [stderr] 134 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:138:12
[INFO] [stderr]     |
[INFO] [stderr] 138 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:142:12
[INFO] [stderr]     |
[INFO] [stderr] 142 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:146:12
[INFO] [stderr]     |
[INFO] [stderr] 146 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:154:12
[INFO] [stderr]     |
[INFO] [stderr] 154 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:166:12
[INFO] [stderr]     |
[INFO] [stderr] 166 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:170:12
[INFO] [stderr]     |
[INFO] [stderr] 170 |         Ok(try!(read_f32(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 |         Ok(try!(read_f64(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:178:23
[INFO] [stderr]     |
[INFO] [stderr] 178 |         let mut res = try!(self.read_str());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:187:19
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let len = try!(read_str_len(&mut self.rd));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 |         try!(self.rd.read_exact(&mut buf).map_err(|err| Error::InvalidDataRead(err)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:199:19
[INFO] [stderr]     |
[INFO] [stderr] 199 |         let len = try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:210:18
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let id = try!(self.read_usize());
[INFO] [stderr]     |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |             try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:254:22
[INFO] [stderr]     |
[INFO] [stderr] 254 |         let actual = try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:296:19
[INFO] [stderr]     |
[INFO] [stderr] 296 |         let len = try!(read_array_len(&mut self.rd)) as usize;
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:310:19
[INFO] [stderr]     |
[INFO] [stderr] 310 |         let len = try!(read_map_len(&mut self.rd)) as usize;
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encode.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         try!(write_uint(&mut self.wr, val));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encode.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         try!(write_sint(&mut self.wr, val));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:116:9
[INFO] [stderr]     |
[INFO] [stderr] 116 |         try!(write_array_len(&mut self.wr, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         try!(self.emit_usize(id));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:212:9
[INFO] [stderr]     |
[INFO] [stderr] 212 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |         try!(write_map_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decode.rs:29:32
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encode.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |     wr: &'a mut Write,
[INFO] [stderr]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encode.rs:30:28
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(wr: &'a mut Write) -> Encoder<'a> {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/decode.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         error::Error::description(self).fmt(f)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:122:12
[INFO] [stderr]     |
[INFO] [stderr] 122 |         Ok(try!(read_nil(&mut self.rd)))
[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/decode.rs:126:12
[INFO] [stderr]     |
[INFO] [stderr] 126 |         Ok(try!(read_bool(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:130:12
[INFO] [stderr]     |
[INFO] [stderr] 130 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:134:12
[INFO] [stderr]     |
[INFO] [stderr] 134 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:138:12
[INFO] [stderr]     |
[INFO] [stderr] 138 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:142:12
[INFO] [stderr]     |
[INFO] [stderr] 142 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:146:12
[INFO] [stderr]     |
[INFO] [stderr] 146 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:150:12
[INFO] [stderr]     |
[INFO] [stderr] 150 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:154:12
[INFO] [stderr]     |
[INFO] [stderr] 154 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:166:12
[INFO] [stderr]     |
[INFO] [stderr] 166 |         Ok(try!(read_int(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:170:12
[INFO] [stderr]     |
[INFO] [stderr] 170 |         Ok(try!(read_f32(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 |         Ok(try!(read_f64(&mut self.rd)))
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:178:23
[INFO] [stderr]     |
[INFO] [stderr] 178 |         let mut res = try!(self.read_str());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:187:19
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let len = try!(read_str_len(&mut self.rd));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 |         try!(self.rd.read_exact(&mut buf).map_err(|err| Error::InvalidDataRead(err)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:199:19
[INFO] [stderr]     |
[INFO] [stderr] 199 |         let len = try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:210:18
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let id = try!(self.read_usize());
[INFO] [stderr]     |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |             try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:254:22
[INFO] [stderr]     |
[INFO] [stderr] 254 |         let actual = try!(read_array_len(&mut self.rd));
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:296:19
[INFO] [stderr]     |
[INFO] [stderr] 296 |         let len = try!(read_array_len(&mut self.rd)) as usize;
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decode.rs:310:19
[INFO] [stderr]     |
[INFO] [stderr] 310 |         let len = try!(read_map_len(&mut self.rd)) as usize;
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encode.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         try!(write_uint(&mut self.wr, val));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encode.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         try!(write_sint(&mut self.wr, val));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:116:9
[INFO] [stderr]     |
[INFO] [stderr] 116 |         try!(write_array_len(&mut self.wr, 2));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         try!(self.emit_usize(id));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:212:9
[INFO] [stderr]     |
[INFO] [stderr] 212 |         try!(write_array_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encode.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |         try!(write_map_len(&mut self.wr, len as u32));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decode.rs:29:32
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encode.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |     wr: &'a mut Write,
[INFO] [stderr]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/encode.rs:30:28
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(wr: &'a mut Write) -> Encoder<'a> {
[INFO] [stderr]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/decode.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         error::Error::description(self).fmt(f)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 35 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 35 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.25s
[INFO] running `"docker" "inspect" "f850fd72bbfd8fa836a7379b9233e383ab3b2f168d60a793b7b9af6488aae79c"`
[INFO] running `"docker" "rm" "-f" "f850fd72bbfd8fa836a7379b9233e383ab3b2f168d60a793b7b9af6488aae79c"`
[INFO] [stdout] f850fd72bbfd8fa836a7379b9233e383ab3b2f168d60a793b7b9af6488aae79c