[INFO] fetching crate vec-vp-tree 0.2.0-alpha.1...
[INFO] testing vec-vp-tree-0.2.0-alpha.1 against try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take4
[INFO] extracting crate vec-vp-tree 0.2.0-alpha.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate vec-vp-tree 0.2.0-alpha.1 on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1aa81bf82888888d858707f05aff9c67ffed18f97e815e61612f53abf53c7237
[INFO] running `Command { std: "docker" "start" "-a" "1aa81bf82888888d858707f05aff9c67ffed18f97e815e61612f53abf53c7237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1aa81bf82888888d858707f05aff9c67ffed18f97e815e61612f53abf53c7237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aa81bf82888888d858707f05aff9c67ffed18f97e815e61612f53abf53c7237", kill_on_drop: false }`
[INFO] [stdout] 1aa81bf82888888d858707f05aff9c67ffed18f97e815e61612f53abf53c7237
[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 8a39b30c9470224559e2de4246268e22b15c806c16af2e17648eefd42510b06d
[INFO] running `Command { std: "docker" "start" "-a" "8a39b30c9470224559e2de4246268e22b15c806c16af2e17648eefd42510b06d", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling order-stat v0.1.3
[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 `parent` is never read
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Node {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] 306 |     idx: usize,
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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 0.82s
[INFO] running `Command { std: "docker" "inspect" "8a39b30c9470224559e2de4246268e22b15c806c16af2e17648eefd42510b06d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a39b30c9470224559e2de4246268e22b15c806c16af2e17648eefd42510b06d", kill_on_drop: false }`
[INFO] [stdout] 8a39b30c9470224559e2de4246268e22b15c806c16af2e17648eefd42510b06d
[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d2a6033810b6cd4e25a348048f8d88ef05e110077d57039907b04fcc06459ae6
[INFO] running `Command { std: "docker" "start" "-a" "d2a6033810b6cd4e25a348048f8d88ef05e110077d57039907b04fcc06459ae6", kill_on_drop: false }`
[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 `parent` is never read
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Node {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] 306 |     idx: usize,
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vec-vp-tree v0.2.0-alpha.1 (/opt/rustwide/workdir)
[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 `parent` is never read
[INFO] [stdout]    --> src/lib.rs:307:5
[INFO] [stdout]     |
[INFO] [stdout] 305 | struct Node {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] 306 |     idx: usize,
[INFO] [stdout] 307 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "d2a6033810b6cd4e25a348048f8d88ef05e110077d57039907b04fcc06459ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2a6033810b6cd4e25a348048f8d88ef05e110077d57039907b04fcc06459ae6", kill_on_drop: false }`
[INFO] [stdout] d2a6033810b6cd4e25a348048f8d88ef05e110077d57039907b04fcc06459ae6
[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 5c6d4bd78746b62e17126cb12082b5877cc657b95283666c3afdbaa6c354cede
[INFO] running `Command { std: "docker" "start" "-a" "5c6d4bd78746b62e17126cb12082b5877cc657b95283666c3afdbaa6c354cede", 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 `parent` is never read
[INFO] [stderr]    --> src/lib.rs:307:5
[INFO] [stderr]     |
[INFO] [stderr] 305 | struct Node {
[INFO] [stderr]     |        ---- field in this struct
[INFO] [stderr] 306 |     idx: usize,
[INFO] [stderr] 307 |     parent: usize,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Node` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[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 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/vec_vp_tree-e8b8ef2a6f9995f5)
[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] running `Command { std: "docker" "inspect" "5c6d4bd78746b62e17126cb12082b5877cc657b95283666c3afdbaa6c354cede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6d4bd78746b62e17126cb12082b5877cc657b95283666c3afdbaa6c354cede", kill_on_drop: false }`
[INFO] [stdout] 5c6d4bd78746b62e17126cb12082b5877cc657b95283666c3afdbaa6c354cede