[INFO] fetching crate vec-vp-tree 0.2.0-alpha.1...
[INFO] testing vec-vp-tree-0.2.0-alpha.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate vec-vp-tree 0.2.0-alpha.1 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate vec-vp-tree 0.2.0-alpha.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vec-vp-tree 0.2.0-alpha.1
[INFO] finished tweaking crates.io crate vec-vp-tree 0.2.0-alpha.1
[INFO] tweaked toml for crates.io crate vec-vp-tree 0.2.0-alpha.1 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 order-stat v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a81d90230bbc6830d3e379771be65e89d0853796de10c75318716cb2108c5651
[INFO] running `Command { std: "docker" "start" "-a" "a81d90230bbc6830d3e379771be65e89d0853796de10c75318716cb2108c5651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a81d90230bbc6830d3e379771be65e89d0853796de10c75318716cb2108c5651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81d90230bbc6830d3e379771be65e89d0853796de10c75318716cb2108c5651", kill_on_drop: false }`
[INFO] [stdout] a81d90230bbc6830d3e379771be65e89d0853796de10c75318716cb2108c5651
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9516dad36ac4f1ff7cc65ad520bb14fe75f53acba4b62c7ca39066c1e0d81943
[INFO] running `Command { std: "docker" "start" "-a" "9516dad36ac4f1ff7cc65ad520bb14fe75f53acba4b62c7ca39066c1e0d81943", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling order-stat v0.1.3
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling vec-vp-tree v0.2.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             try!(f.write_char('\n'));
[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/print.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 try!(f.write_str("[ "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 try!(f.write_str("] "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                     try!(write!(f, "{:?} ", node));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(writeln!(f, "VpTree {{ len: {} }}", self.items.len()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(writeln!(f, "Items: {:?}", self.items));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:293:13
[INFO] [stdout]     |
[INFO] [stdout] 293 |             try!(f.write_str("Structure:\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:304:10
[INFO] [stdout]     |
[INFO] [stdout] 304 | #[derive(Clone, Debug)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]    --> src/lib.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn within_radius<'t, O: Borrow<T>>(&'t self, origin: O, radius: u64) -> Vec<Neighbor<'t, T>> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:15:9
[INFO] [stdout]     |
[INFO] [stdout] 15  | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
[INFO] running `Command { std: "docker" "inspect" "9516dad36ac4f1ff7cc65ad520bb14fe75f53acba4b62c7ca39066c1e0d81943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9516dad36ac4f1ff7cc65ad520bb14fe75f53acba4b62c7ca39066c1e0d81943", kill_on_drop: false }`
[INFO] [stdout] 9516dad36ac4f1ff7cc65ad520bb14fe75f53acba4b62c7ca39066c1e0d81943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a737ca0fafa4ad219fa638b91f41f66210f85cf675c973870dfb9ec1a45785d9
[INFO] running `Command { std: "docker" "start" "-a" "a737ca0fafa4ad219fa638b91f41f66210f85cf675c973870dfb9ec1a45785d9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling vec-vp-tree v0.2.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             try!(f.write_char('\n'));
[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/print.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 try!(f.write_str("[ "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 try!(f.write_str("] "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                     try!(write!(f, "{:?} ", node));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(writeln!(f, "VpTree {{ len: {} }}", self.items.len()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(writeln!(f, "Items: {:?}", self.items));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:293:13
[INFO] [stdout]     |
[INFO] [stdout] 293 |             try!(f.write_str("Structure:\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:304:10
[INFO] [stdout]     |
[INFO] [stdout] 304 | #[derive(Clone, Debug)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for an associated function
[INFO] [stdout]    --> src/lib.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 |     pub fn within_radius<'t, O: Borrow<T>>(&'t self, origin: O, radius: u64) -> Vec<Neighbor<'t, T>> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:15:9
[INFO] [stdout]     |
[INFO] [stdout] 15  | #![warn(missing_docs)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             try!(f.write_char('\n'));
[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/print.rs:61:17
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 try!(f.write_str("[ "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 try!(f.write_str("] "));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/print.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                     try!(write!(f, "{:?} ", node));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         try!(writeln!(f, "VpTree {{ len: {} }}", self.items.len()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(writeln!(f, "Items: {:?}", self.items));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:293:13
[INFO] [stdout]     |
[INFO] [stdout] 293 |             try!(f.write_str("Structure:\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:304:10
[INFO] [stdout]     |
[INFO] [stdout] 304 | #[derive(Clone, Debug)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "a737ca0fafa4ad219fa638b91f41f66210f85cf675c973870dfb9ec1a45785d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a737ca0fafa4ad219fa638b91f41f66210f85cf675c973870dfb9ec1a45785d9", kill_on_drop: false }`
[INFO] [stdout] a737ca0fafa4ad219fa638b91f41f66210f85cf675c973870dfb9ec1a45785d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d40b57d33892b90748f2c213bfa410c1a8099a4a4bdf464ca8154e526533d307
[INFO] running `Command { std: "docker" "start" "-a" "d40b57d33892b90748f2c213bfa410c1a8099a4a4bdf464ca8154e526533d307", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/print.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |             try!(f.write_char('\n'));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/print.rs:61:17
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 try!(f.write_str("[ "));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/print.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |                 try!(f.write_str("] "));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/print.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |                     try!(write!(f, "{:?} ", node));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |         try!(writeln!(f, "VpTree {{ len: {} }}", self.items.len()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:290:9
[INFO] [stderr]     |
[INFO] [stderr] 290 |         try!(writeln!(f, "Items: {:?}", self.items));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:293:13
[INFO] [stderr]     |
[INFO] [stderr] 293 |             try!(f.write_str("Structure:\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parent`
[INFO] [stderr]    --> src/lib.rs:307:5
[INFO] [stderr]     |
[INFO] [stderr] 307 |     parent: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/lib.rs:304:10
[INFO] [stderr]     |
[INFO] [stderr] 304 | #[derive(Clone, Debug)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: missing documentation for an associated function
[INFO] [stderr]    --> src/lib.rs:263:5
[INFO] [stderr]     |
[INFO] [stderr] 263 |     pub fn within_radius<'t, O: Borrow<T>>(&'t self, origin: O, radius: u64) -> Vec<Neighbor<'t, T>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:15:9
[INFO] [stderr]     |
[INFO] [stderr] 15  | #![warn(missing_docs)]
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `vec-vp-tree` (lib) generated 9 warnings
[INFO] [stderr] warning: `vec-vp-tree` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vec_vp_tree-c952855023eade56)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_k_nearest ... ok
[INFO] [stdout] test test::test_within_radius ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vec-vp-tree
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d40b57d33892b90748f2c213bfa410c1a8099a4a4bdf464ca8154e526533d307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d40b57d33892b90748f2c213bfa410c1a8099a4a4bdf464ca8154e526533d307", kill_on_drop: false }`
[INFO] [stdout] d40b57d33892b90748f2c213bfa410c1a8099a4a4bdf464ca8154e526533d307