[INFO] cloning repository https://github.com/sighol/clock-server
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sighol/clock-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsighol%2Fclock-server"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsighol%2Fclock-server'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2113a1f4bada7c46b22b457e45a28e096997a0cd
[INFO] checking sighol/clock-server against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsighol%2Fclock-server" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sighol/clock-server on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sighol/clock-server
[INFO] finished tweaking git repo https://github.com/sighol/clock-server
[INFO] tweaked toml for git repo https://github.com/sighol/clock-server written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sighol/clock-server already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 2a2b1cd0493dff4ec75c39e4312bbd0a5f32418cac229a1f90982c317c393d6f
[INFO] running `"docker" "start" "-a" "2a2b1cd0493dff4ec75c39e4312bbd0a5f32418cac229a1f90982c317c393d6f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking clock-server v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         try!(vec.write_u8(self.leap << LEAP_SHIFT | self.version << VERSION_SHIFT | self.mode));
[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/ntp.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         try!(vec.write_u8(self.stratum));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         try!(vec.write_u8(self.poll));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         try!(vec.write_u8(self.precision));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         try!(vec.write_u32::<BigEndian>(self.root_delay));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |         try!(vec.write_u32::<BigEndian>(self.root_dispersion));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         try!(vec.write_u32::<BigEndian>(self.reference_id));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         try!(vec.write_u32::<BigEndian>(self.reference_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         try!(vec.write_u32::<BigEndian>(self.reference_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         try!(vec.write_u32::<BigEndian>(self.origin_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         try!(vec.write_u32::<BigEndian>(self.origin_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         try!(vec.write_u32::<BigEndian>(self.receive_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         try!(vec.write_u32::<BigEndian>(self.receive_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |         try!(vec.write_u32::<BigEndian>(self.transmit_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         try!(vec.write_u32::<BigEndian>(self.transmit_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:119:33
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let leap_version_mode = try!(reader.read_u8());
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:123:26
[INFO] [stderr]     |
[INFO] [stderr] 123 |         header.stratum = try!(reader.read_u8());
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:124:23
[INFO] [stderr]     |
[INFO] [stderr] 124 |         header.poll = try!(reader.read_u8());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:125:28
[INFO] [stderr]     |
[INFO] [stderr] 125 |         header.precision = try!(reader.read_u8());
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:126:29
[INFO] [stderr]     |
[INFO] [stderr] 126 |         header.root_delay = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:127:34
[INFO] [stderr]     |
[INFO] [stderr] 127 |         header.root_dispersion = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:128:31
[INFO] [stderr]     |
[INFO] [stderr] 128 |         header.reference_id = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:129:46
[INFO] [stderr]     |
[INFO] [stderr] 129 |         header.reference_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:130:47
[INFO] [stderr]     |
[INFO] [stderr] 130 |         header.reference_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:131:43
[INFO] [stderr]     |
[INFO] [stderr] 131 |         header.origin_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:132:44
[INFO] [stderr]     |
[INFO] [stderr] 132 |         header.origin_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:133:44
[INFO] [stderr]     |
[INFO] [stderr] 133 |         header.receive_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:134:45
[INFO] [stderr]     |
[INFO] [stderr] 134 |         header.receive_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:135:45
[INFO] [stderr]     |
[INFO] [stderr] 135 |         header.transmit_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:136:46
[INFO] [stderr]     |
[INFO] [stderr] 136 |         header.transmit_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     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: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         try!(vec.write_u8(self.leap << LEAP_SHIFT | self.version << VERSION_SHIFT | self.mode));
[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/ntp.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         try!(vec.write_u8(self.stratum));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         try!(vec.write_u8(self.poll));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         try!(vec.write_u8(self.precision));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |         try!(vec.write_u32::<BigEndian>(self.root_delay));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |         try!(vec.write_u32::<BigEndian>(self.root_dispersion));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/ntp.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         try!(vec.write_u32::<BigEndian>(self.reference_id));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         try!(vec.write_u32::<BigEndian>(self.reference_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         try!(vec.write_u32::<BigEndian>(self.reference_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         try!(vec.write_u32::<BigEndian>(self.origin_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         try!(vec.write_u32::<BigEndian>(self.origin_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         try!(vec.write_u32::<BigEndian>(self.receive_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         try!(vec.write_u32::<BigEndian>(self.receive_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |         try!(vec.write_u32::<BigEndian>(self.transmit_timestamp.seconds));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         try!(vec.write_u32::<BigEndian>(self.transmit_timestamp.fraction));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:119:33
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let leap_version_mode = try!(reader.read_u8());
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:123:26
[INFO] [stderr]     |
[INFO] [stderr] 123 |         header.stratum = try!(reader.read_u8());
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:124:23
[INFO] [stderr]     |
[INFO] [stderr] 124 |         header.poll = try!(reader.read_u8());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:125:28
[INFO] [stderr]     |
[INFO] [stderr] 125 |         header.precision = try!(reader.read_u8());
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:126:29
[INFO] [stderr]     |
[INFO] [stderr] 126 |         header.root_delay = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:127:34
[INFO] [stderr]     |
[INFO] [stderr] 127 |         header.root_dispersion = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:128:31
[INFO] [stderr]     |
[INFO] [stderr] 128 |         header.reference_id = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:129:46
[INFO] [stderr]     |
[INFO] [stderr] 129 |         header.reference_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:130:47
[INFO] [stderr]     |
[INFO] [stderr] 130 |         header.reference_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:131:43
[INFO] [stderr]     |
[INFO] [stderr] 131 |         header.origin_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:132:44
[INFO] [stderr]     |
[INFO] [stderr] 132 |         header.origin_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:133:44
[INFO] [stderr]     |
[INFO] [stderr] 133 |         header.receive_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:134:45
[INFO] [stderr]     |
[INFO] [stderr] 134 |         header.receive_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:135:45
[INFO] [stderr]     |
[INFO] [stderr] 135 |         header.transmit_timestamp.seconds = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ntp.rs:136:46
[INFO] [stderr]     |
[INFO] [stderr] 136 |         header.transmit_timestamp.fraction = try!(reader.read_u32::<BigEndian>());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:39
[INFO] [stderr]    |
[INFO] [stderr] 41 |             Error::Io(ref err) => err.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:41:39
[INFO] [stderr]    |
[INFO] [stderr] 41 |             Error::Io(ref err) => err.cause(),
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `"docker" "inspect" "2a2b1cd0493dff4ec75c39e4312bbd0a5f32418cac229a1f90982c317c393d6f"`
[INFO] running `"docker" "rm" "-f" "2a2b1cd0493dff4ec75c39e4312bbd0a5f32418cac229a1f90982c317c393d6f"`
[INFO] [stdout] 2a2b1cd0493dff4ec75c39e4312bbd0a5f32418cac229a1f90982c317c393d6f