[INFO] fetching crate serde-bench 0.0.7...
[INFO] checking serde-bench-0.0.7 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate serde-bench 0.0.7 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde-bench 0.0.7 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde-bench 0.0.7
[INFO] finished tweaking crates.io crate serde-bench 0.0.7
[INFO] tweaked toml for crates.io crate serde-bench 0.0.7 written to /workspace/builds/worker-2/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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 7a819d4c1c5aa04bca7f26c33e51c54d787c420aa25331ec0fcb97d0b176f3e3
[INFO] running `"docker" "start" "-a" "7a819d4c1c5aa04bca7f26c33e51c54d787c420aa25331ec0fcb97d0b176f3e3"`
[INFO] [stderr]     Checking serde-bench v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         try!(self.serialize_u64(v.len() as u64));
[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/ser.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |         try!(self.serialize_u64(v.len() as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         try!(self.writer.write_u8(1));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:132:9
[INFO] [stderr]     |
[INFO] [stderr] 132 |         try!(self.serialize_u64(len as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |         try!(self.serialize_u64(len as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:179:9
[INFO] [stderr]     |
[INFO] [stderr] 179 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:18:19
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:26:24
[INFO] [stderr]    |
[INFO] [stderr] 26 |         str::from_utf8(try!(self.read_slice())).map_err(Into::into)
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:55:15
[INFO] [stderr]    |
[INFO] [stderr] 55 |         match try!(self.bytes.read_u8()) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     impl_nums!(u16, deserialize_u16, visit_u16, read_u16);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     impl_nums!(u32, deserialize_u32, visit_u32, read_u32);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |     impl_nums!(u64, deserialize_u64, visit_u64, read_u64);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |     impl_nums!(i16, deserialize_i16, visit_i16, read_i16);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 |     impl_nums!(i32, deserialize_i32, visit_i32, read_i32);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 |     impl_nums!(i64, deserialize_i64, visit_i64, read_i64);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     impl_nums!(f32, deserialize_f32, visit_f32, read_f32);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     impl_nums!(f64, deserialize_f64, visit_f64, read_f64);
[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/de.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |         visitor.visit_u8(try!(self.bytes.read_u8()))
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:82:26
[INFO] [stderr]    |
[INFO] [stderr] 82 |         visitor.visit_i8(try!(self.bytes.read_i8()))
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:117:36
[INFO] [stderr]     |
[INFO] [stderr] 117 |         visitor.visit_borrowed_str(try!(self.read_str()))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:124:36
[INFO] [stderr]     |
[INFO] [stderr] 124 |         visitor.visit_borrowed_str(try!(self.read_str()))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:131:38
[INFO] [stderr]     |
[INFO] [stderr] 131 |         visitor.visit_borrowed_bytes(try!(self.read_slice()))
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:138:38
[INFO] [stderr]     |
[INFO] [stderr] 138 |         visitor.visit_borrowed_bytes(try!(self.read_slice()))
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:163:15
[INFO] [stderr]     |
[INFO] [stderr] 163 |         match try!(self.bytes.read_u8()) {
[INFO] [stderr]     |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:195:19
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:312:21
[INFO] [stderr]     |
[INFO] [stderr] 312 |         let index = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:314:21
[INFO] [stderr]     |
[INFO] [stderr] 314 |         let value = try!(seed.deserialize(deserializer));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         try!(self.serialize_u64(v.len() as u64));
[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/ser.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |         try!(self.serialize_u64(v.len() as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         try!(self.writer.write_u8(1));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:132:9
[INFO] [stderr]     |
[INFO] [stderr] 132 |         try!(self.serialize_u64(len as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |         try!(self.serialize_u64(len as u64));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:179:9
[INFO] [stderr]     |
[INFO] [stderr] 179 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/ser.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         try!(self.serialize_u32(variant_index));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:18:19
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:26:24
[INFO] [stderr]    |
[INFO] [stderr] 26 |         str::from_utf8(try!(self.read_slice())).map_err(Into::into)
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:55:15
[INFO] [stderr]    |
[INFO] [stderr] 55 |         match try!(self.bytes.read_u8()) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     impl_nums!(u16, deserialize_u16, visit_u16, read_u16);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     impl_nums!(u32, deserialize_u32, visit_u32, read_u32);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |     impl_nums!(u64, deserialize_u64, visit_u64, read_u64);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |     impl_nums!(i16, deserialize_i16, visit_i16, read_i16);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 |     impl_nums!(i32, deserialize_i32, visit_i32, read_i32);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 |     impl_nums!(i64, deserialize_i64, visit_i64, read_i64);
[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/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 68 |     impl_nums!(f32, deserialize_f32, visit_f32, read_f32);
[INFO] [stderr]    |     ------------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let value = try!(self.bytes.$reader_method::<NetworkEndian>());
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |     impl_nums!(f64, deserialize_f64, visit_f64, read_f64);
[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/de.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |         visitor.visit_u8(try!(self.bytes.read_u8()))
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/de.rs:82:26
[INFO] [stderr]    |
[INFO] [stderr] 82 |         visitor.visit_i8(try!(self.bytes.read_i8()))
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:117:36
[INFO] [stderr]     |
[INFO] [stderr] 117 |         visitor.visit_borrowed_str(try!(self.read_str()))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:124:36
[INFO] [stderr]     |
[INFO] [stderr] 124 |         visitor.visit_borrowed_str(try!(self.read_str()))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:131:38
[INFO] [stderr]     |
[INFO] [stderr] 131 |         visitor.visit_borrowed_bytes(try!(self.read_slice()))
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:138:38
[INFO] [stderr]     |
[INFO] [stderr] 138 |         visitor.visit_borrowed_bytes(try!(self.read_slice()))
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:163:15
[INFO] [stderr]     |
[INFO] [stderr] 163 |         match try!(self.bytes.read_u8()) {
[INFO] [stderr]     |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:195:19
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:235:19
[INFO] [stderr]     |
[INFO] [stderr] 235 |         let len = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:312:21
[INFO] [stderr]     |
[INFO] [stderr] 312 |         let index = try!(Deserialize::deserialize(&mut *self));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/de.rs:314:21
[INFO] [stderr]     |
[INFO] [stderr] 314 |         let value = try!(seed.deserialize(deserializer));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.86s
[INFO] running `"docker" "inspect" "7a819d4c1c5aa04bca7f26c33e51c54d787c420aa25331ec0fcb97d0b176f3e3"`
[INFO] running `"docker" "rm" "-f" "7a819d4c1c5aa04bca7f26c33e51c54d787c420aa25331ec0fcb97d0b176f3e3"`
[INFO] [stdout] 7a819d4c1c5aa04bca7f26c33e51c54d787c420aa25331ec0fcb97d0b176f3e3