[INFO] fetching crate netdb 0.1.0...
[INFO] building netdb-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate netdb 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate netdb 0.1.0
[INFO] finished tweaking crates.io crate netdb 0.1.0
[INFO] tweaked toml for crates.io crate netdb 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate netdb 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding domain v0.2.4 (available: v0.11.0)
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scoped-tls v0.1.2
[INFO] [stderr]   Downloaded tokio-fs v0.1.7
[INFO] [stderr]   Downloaded tokio-uds v0.2.7
[INFO] [stderr]   Downloaded tokio-core v0.1.18
[INFO] [stderr]   Downloaded domain v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b486eb86b90321eb15f3a6a6be17d5fd96d0a8285e6a91b9853eb4237f6b07da
[INFO] running `Command { std: "docker" "start" "-a" "b486eb86b90321eb15f3a6a6be17d5fd96d0a8285e6a91b9853eb4237f6b07da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b486eb86b90321eb15f3a6a6be17d5fd96d0a8285e6a91b9853eb4237f6b07da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b486eb86b90321eb15f3a6a6be17d5fd96d0a8285e6a91b9853eb4237f6b07da", kill_on_drop: false }`
[INFO] [stdout] b486eb86b90321eb15f3a6a6be17d5fd96d0a8285e6a91b9853eb4237f6b07da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8877d99136f5e67fccd022e39bb4045f3970a140d6154b272b05b382d7a707a9
[INFO] running `Command { std: "docker" "start" "-a" "8877d99136f5e67fccd022e39bb4045f3970a140d6154b272b05b382d7a707a9", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[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 domain v0.2.4
[INFO] [stderr]    Compiling netdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:142:24
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let mut file = try!(fs::File::open(path));
[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/hosts/files.rs:153:37
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let _ = self.parse_line(try!(line));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let addr = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:171:20
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let addr = try!(IpAddr::from_str(addr));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:173:21
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let cname = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let cname = try!(DNameBuf::from_str(cname));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:180:24
[INFO] [stdout]     |
[INFO] [stdout] 180 |             let name = try!(DNameBuf::from_str(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:204:40
[INFO] [stdout]     |
[INFO] [stdout] 204 |             Error::IoError(ref e) => e.description(),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:237:14
[INFO] [stdout]     |
[INFO] [stdout] 237 |         self.description().fmt(f)
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:121:46
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn lookup_host<N: AsRef<DNameSlice>>(&self, name: N)
[INFO] [stdout]     |                                              ^^^^^ the lifetime is elided here
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                     ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<DNameBuf>> {
[INFO] [stdout]     |                        ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<'_, DNameBuf>> {
[INFO] [stdout]     |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.82s
[INFO] running `Command { std: "docker" "inspect" "8877d99136f5e67fccd022e39bb4045f3970a140d6154b272b05b382d7a707a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8877d99136f5e67fccd022e39bb4045f3970a140d6154b272b05b382d7a707a9", kill_on_drop: false }`
[INFO] [stdout] 8877d99136f5e67fccd022e39bb4045f3970a140d6154b272b05b382d7a707a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22884e682442782e331fc1087116820ef9d53c752a758ca31c4afda8351c1f47
[INFO] running `Command { std: "docker" "start" "-a" "22884e682442782e331fc1087116820ef9d53c752a758ca31c4afda8351c1f47", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:142:24
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let mut file = try!(fs::File::open(path));
[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/hosts/files.rs:153:37
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let _ = self.parse_line(try!(line));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let addr = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:171:20
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let addr = try!(IpAddr::from_str(addr));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:173:21
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let cname = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let cname = try!(DNameBuf::from_str(cname));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:180:24
[INFO] [stdout]     |
[INFO] [stdout] 180 |             let name = try!(DNameBuf::from_str(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:204:40
[INFO] [stdout]     |
[INFO] [stdout] 204 |             Error::IoError(ref e) => e.description(),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:237:14
[INFO] [stdout]     |
[INFO] [stdout] 237 |         self.description().fmt(f)
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:121:46
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn lookup_host<N: AsRef<DNameSlice>>(&self, name: N)
[INFO] [stdout]     |                                              ^^^^^ the lifetime is elided here
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                     ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<DNameBuf>> {
[INFO] [stdout]     |                        ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<'_, DNameBuf>> {
[INFO] [stdout]     |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling netdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:142:24
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let mut file = try!(fs::File::open(path));
[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/hosts/files.rs:153:37
[INFO] [stdout]     |
[INFO] [stdout] 153 |             let _ = self.parse_line(try!(line));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |         let addr = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:171:20
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let addr = try!(IpAddr::from_str(addr));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:173:21
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let cname = try!(words.next().ok_or(Error::ParseError));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let cname = try!(DNameBuf::from_str(cname));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts/files.rs:180:24
[INFO] [stdout]     |
[INFO] [stdout] 180 |             let name = try!(DNameBuf::from_str(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:204:40
[INFO] [stdout]     |
[INFO] [stdout] 204 |             Error::IoError(ref e) => e.description(),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/hosts/files.rs:237:14
[INFO] [stdout]     |
[INFO] [stdout] 237 |         self.description().fmt(f)
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:121:46
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn lookup_host<N: AsRef<DNameSlice>>(&self, name: N)
[INFO] [stdout]     |                                              ^^^^^ the lifetime is elided here
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 122 |                                              -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<IpAddr>> {
[INFO] [stdout]     |                     ^^^^^ the lifetime is elided here   ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn _lookup_host(&self, name: &DNameSlice) -> Option<slice::Iter<'_, IpAddr>> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hosts/files.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<DNameBuf>> {
[INFO] [stdout]     |                        ^^^^^                          ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn lookup_addr(&self, addr: IpAddr) -> Option<slice::Iter<'_, DNameBuf>> {
[INFO] [stdout]     |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "22884e682442782e331fc1087116820ef9d53c752a758ca31c4afda8351c1f47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22884e682442782e331fc1087116820ef9d53c752a758ca31c4afda8351c1f47", kill_on_drop: false }`
[INFO] [stdout] 22884e682442782e331fc1087116820ef9d53c752a758ca31c4afda8351c1f47
