[INFO] fetching crate rfsapi 0.2.0...
[INFO] building rfsapi-0.2.0 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate rfsapi 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rfsapi 0.2.0 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rfsapi 0.2.0
[INFO] finished tweaking crates.io crate rfsapi 0.2.0
[INFO] tweaked toml for crates.io crate rfsapi 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3147ad7493537fb55803bcd05da43b5ebd4b4e5c87d48b2ad742f0e0639e17bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3147ad7493537fb55803bcd05da43b5ebd4b4e5c87d48b2ad742f0e0639e17bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3147ad7493537fb55803bcd05da43b5ebd4b4e5c87d48b2ad742f0e0639e17bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3147ad7493537fb55803bcd05da43b5ebd4b4e5c87d48b2ad742f0e0639e17bf", kill_on_drop: false }`
[INFO] [stdout] 3147ad7493537fb55803bcd05da43b5ebd4b4e5c87d48b2ad742f0e0639e17bf
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a4259ad10c400d1e2333ba527f6e48d87607a807bec75b4563d25cc2892611d
[INFO] running `Command { std: "docker" "start" "-a" "2a4259ad10c400d1e2333ba527f6e48d87607a807bec75b4563d25cc2892611d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-core v0.1.18
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling rfsapi v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(map.serialize_entry("mime_type", &self.mime_type.to_string()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(map.serialize_entry("name", &self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |         try!(map.serialize_entry("last_modified",
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(map.serialize_entry("size", &self.size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         try!(map.serialize_entry("is_file", &self.is_file));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:122:23
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let mut map = try!(serializer.serialize_map(Some(RAW_FILE_DATA_FIELDS.len())));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 try!(mt.parse()
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:24
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 try!(parse_rfc3339(&lm).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&lm), &"RRC3339 timestamp")))
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:34
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:39
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:19
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:24
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:22
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:27
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:180:31
[INFO] [stdout]     |
[INFO] [stdout] 180 |         while let Some(key) = try!(map.next_key::<String>()) {
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:38
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:187:38
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     mime_type = Some(try!(nv.parse::<Mime>()
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     name = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:38
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:201:42
[INFO] [stdout]     |
[INFO] [stdout] 201 | ...   last_modified = Some(try!(parse_rfc3339(&nv).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&nv), &"RRC3339 timestamp"))));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     size = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:213:36
[INFO] [stdout]     |
[INFO] [stdout] 213 |                     is_file = Some(try!(map.next_value()));
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:220:24
[INFO] [stdout]     |
[INFO] [stdout] 220 |             mime_type: try!(mime_type.ok_or_else(|| de::Error::missing_field("mime_type"))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:221:19
[INFO] [stdout]     |
[INFO] [stdout] 221 |             name: try!(name.ok_or_else(|| de::Error::missing_field("name"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:222:28
[INFO] [stdout]     |
[INFO] [stdout] 222 |             last_modified: try!(last_modified.ok_or_else(|| de::Error::missing_field("last_modified"))),
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |             size: try!(size.ok_or_else(|| de::Error::missing_field("size"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |             is_file: try!(is_file.ok_or_else(|| de::Error::missing_field("is_file"))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.70s
[INFO] running `Command { std: "docker" "inspect" "2a4259ad10c400d1e2333ba527f6e48d87607a807bec75b4563d25cc2892611d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a4259ad10c400d1e2333ba527f6e48d87607a807bec75b4563d25cc2892611d", kill_on_drop: false }`
[INFO] [stdout] 2a4259ad10c400d1e2333ba527f6e48d87607a807bec75b4563d25cc2892611d
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29073418ebb14d39378bf043fdc6fec9304e61fe2ad69a364026c0cfa2a3dfd6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "29073418ebb14d39378bf043fdc6fec9304e61fe2ad69a364026c0cfa2a3dfd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(map.serialize_entry("mime_type", &self.mime_type.to_string()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(map.serialize_entry("name", &self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |         try!(map.serialize_entry("last_modified",
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(map.serialize_entry("size", &self.size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         try!(map.serialize_entry("is_file", &self.is_file));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:122:23
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let mut map = try!(serializer.serialize_map(Some(RAW_FILE_DATA_FIELDS.len())));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 try!(mt.parse()
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:24
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 try!(parse_rfc3339(&lm).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&lm), &"RRC3339 timestamp")))
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:34
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:39
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:19
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:24
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:22
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:27
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:180:31
[INFO] [stdout]     |
[INFO] [stdout] 180 |         while let Some(key) = try!(map.next_key::<String>()) {
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:38
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:187:38
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     mime_type = Some(try!(nv.parse::<Mime>()
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     name = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:38
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:201:42
[INFO] [stdout]     |
[INFO] [stdout] 201 | ...   last_modified = Some(try!(parse_rfc3339(&nv).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&nv), &"RRC3339 timestamp"))));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     size = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:213:36
[INFO] [stdout]     |
[INFO] [stdout] 213 |                     is_file = Some(try!(map.next_value()));
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:220:24
[INFO] [stdout]     |
[INFO] [stdout] 220 |             mime_type: try!(mime_type.ok_or_else(|| de::Error::missing_field("mime_type"))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:221:19
[INFO] [stdout]     |
[INFO] [stdout] 221 |             name: try!(name.ok_or_else(|| de::Error::missing_field("name"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:222:28
[INFO] [stdout]     |
[INFO] [stdout] 222 |             last_modified: try!(last_modified.ok_or_else(|| de::Error::missing_field("last_modified"))),
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |             size: try!(size.ok_or_else(|| de::Error::missing_field("size"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |             is_file: try!(is_file.ok_or_else(|| de::Error::missing_field("is_file"))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rfsapi v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(map.serialize_entry("mime_type", &self.mime_type.to_string()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(map.serialize_entry("name", &self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |         try!(map.serialize_entry("last_modified",
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(map.serialize_entry("size", &self.size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         try!(map.serialize_entry("is_file", &self.is_file));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:122:23
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let mut map = try!(serializer.serialize_map(Some(RAW_FILE_DATA_FIELDS.len())));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 try!(mt.parse()
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:34
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 |                 let mt: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:19
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:164:24
[INFO] [stdout]     |
[INFO] [stdout] 164 |             name: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(1, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |                 try!(parse_rfc3339(&lm).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&lm), &"RRC3339 timestamp")))
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:34
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:166:39
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let lm: String = try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(0, &self)));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:19
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:169:24
[INFO] [stdout]     |
[INFO] [stdout] 169 |             size: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(3, &self))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:22
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:170:27
[INFO] [stdout]     |
[INFO] [stdout] 170 |             is_file: try!(try!(seq.next_element()).ok_or_else(|| de::Error::invalid_length(4, &self))),
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:180:31
[INFO] [stdout]     |
[INFO] [stdout] 180 |         while let Some(key) = try!(map.next_key::<String>()) {
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:38
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:187:38
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     mime_type = Some(try!(nv.parse::<Mime>()
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:194:33
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     name = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:38
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     let nv: String = try!(map.next_value());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:201:42
[INFO] [stdout]     |
[INFO] [stdout] 201 | ...   last_modified = Some(try!(parse_rfc3339(&nv).map_err(|_| de::Error::invalid_value(de::Unexpected::Str(&nv), &"RRC3339 timestamp"))));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     size = Some(try!(map.next_value()));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:213:36
[INFO] [stdout]     |
[INFO] [stdout] 213 |                     is_file = Some(try!(map.next_value()));
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:220:24
[INFO] [stdout]     |
[INFO] [stdout] 220 |             mime_type: try!(mime_type.ok_or_else(|| de::Error::missing_field("mime_type"))),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:221:19
[INFO] [stdout]     |
[INFO] [stdout] 221 |             name: try!(name.ok_or_else(|| de::Error::missing_field("name"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:222:28
[INFO] [stdout]     |
[INFO] [stdout] 222 |             last_modified: try!(last_modified.ok_or_else(|| de::Error::missing_field("last_modified"))),
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:223:19
[INFO] [stdout]     |
[INFO] [stdout] 223 |             size: try!(size.ok_or_else(|| de::Error::missing_field("size"))),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |             is_file: try!(is_file.ok_or_else(|| de::Error::missing_field("is_file"))),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "29073418ebb14d39378bf043fdc6fec9304e61fe2ad69a364026c0cfa2a3dfd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29073418ebb14d39378bf043fdc6fec9304e61fe2ad69a364026c0cfa2a3dfd6", kill_on_drop: false }`
[INFO] [stdout] 29073418ebb14d39378bf043fdc6fec9304e61fe2ad69a364026c0cfa2a3dfd6