[INFO] fetching crate furze 0.1.0...
[INFO] checking furze-0.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate furze 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate furze 0.1.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate furze 0.1.0
[INFO] finished tweaking crates.io crate furze 0.1.0
[INFO] tweaked toml for crates.io crate furze 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded varintrs v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f015472ea28dea16bd8b232e9ef2f2aba4bdfe652532d8c7d6cea4c8b7ff4072
[INFO] running `Command { std: "docker" "start" "-a" "f015472ea28dea16bd8b232e9ef2f2aba4bdfe652532d8c7d6cea4c8b7ff4072", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f015472ea28dea16bd8b232e9ef2f2aba4bdfe652532d8c7d6cea4c8b7ff4072", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f015472ea28dea16bd8b232e9ef2f2aba4bdfe652532d8c7d6cea4c8b7ff4072", kill_on_drop: false }`
[INFO] [stdout] f015472ea28dea16bd8b232e9ef2f2aba4bdfe652532d8c7d6cea4c8b7ff4072
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1b8741850ce841412fb1b0a8ec95a684fc92bf227be358944d2c0faefeb058
[INFO] running `Command { std: "docker" "start" "-a" "da1b8741850ce841412fb1b0a8ec95a684fc92bf227be358944d2c0faefeb058", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking varintrs v0.2.1
[INFO] [stderr]     Checking furze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::encoder::Encoder`
[INFO] [stdout]  --> src/decoder.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::encoder::Encoder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f64::consts::E`
[INFO] [stdout]   --> src/decoder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::f64::consts::E;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::linux::raw::stat`
[INFO] [stdout]   --> src/decoder.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::os::linux::raw::stat;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/decoder.rs:350:9
[INFO] [stdout]     |
[INFO] [stdout] 350 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::encoder::Encoder`
[INFO] [stdout]  --> src/decoder.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::encoder::Encoder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f64::consts::E`
[INFO] [stdout]   --> src/decoder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::f64::consts::E;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::linux::raw::stat`
[INFO] [stdout]   --> src/decoder.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::os::linux::raw::stat;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | mod tests {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `std::os::linux::raw::stat`: these type aliases are no longer supported by the standard library, the `libc` crate on crates.io should be used instead for the correct definitions
[INFO] [stdout]   --> src/decoder.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::os::linux::raw::stat;
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `std::os::linux::raw::stat`: these type aliases are no longer supported by the standard library, the `libc` crate on crates.io should be used instead for the correct definitions
[INFO] [stdout]   --> src/decoder.rs:13:26
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::os::linux::raw::stat;
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/encoder.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut wtr = Encoder::new(v);
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `add_prefix` is never read
[INFO] [stdout]   --> src/state.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let mut add_prefix: u64 = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/fst.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let i = 0;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `add_prefix` is never read
[INFO] [stdout]   --> src/state.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let mut add_prefix: u64 = 0;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/state.rs:77:30
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn add_prefix(&mut self, key: &[u8]) {}
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/state.rs:85:14
[INFO] [stdout]    |
[INFO] [stdout] 85 |         for (i, v) in key[1..].iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/state.rs:77:30
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn add_prefix(&mut self, key: &[u8]) {}
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/state.rs:85:14
[INFO] [stdout]    |
[INFO] [stdout] 85 |         for (i, v) in key[1..].iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut fst = FST::load(b.get().to_vec());
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DROP_MSB` is never used
[INFO] [stdout]   --> src/decoder.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DROP_MSB: u8 = 0b0111_1111;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MSB` is never used
[INFO] [stdout]   --> src/decoder.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const MSB: u8 = 0b1000_0000;
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_slice` is never used
[INFO] [stdout]   --> src/decoder.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn copy_slice<T: Copy>(des: &mut [T], src: &[T]) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/decoder.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<T: AsRef<[u8]>> ReverseReader<T> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn reset(&mut self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]    --> src/decoder.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl<T: AsRef<[u8]>> Decoder<T> {
[INFO] [stdout]     | ------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub(crate) fn reset(&mut self) {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MSB` is never used
[INFO] [stdout]   --> src/encoder.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MSB: u8 = 0b1000_0000;
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DROP_MSB` is never used
[INFO] [stdout]   --> src/decoder.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DROP_MSB: u8 = 0b0111_1111;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MSB` is never used
[INFO] [stdout]   --> src/decoder.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const MSB: u8 = 0b1000_0000;
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_slice` is never used
[INFO] [stdout]   --> src/decoder.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn copy_slice<T: Copy>(des: &mut [T], src: &[T]) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]   --> src/decoder.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<T: AsRef<[u8]>> ReverseReader<T> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn reset(&mut self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reset` is never used
[INFO] [stdout]    --> src/decoder.rs:108:19
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl<T: AsRef<[u8]>> Decoder<T> {
[INFO] [stdout]     | ------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub(crate) fn reset(&mut self) {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MSB` is never used
[INFO] [stdout]   --> src/encoder.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const MSB: u8 = 0b1000_0000;
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/encoder.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 28  | / impl<W> Encoder<W>
[INFO] [stdout] 29  | | where
[INFO] [stdout] 30  | |     W: Write + Clear,
[INFO] [stdout]     | |_____________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 122 |       fn flush(&mut self) -> FstResult<()> {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_prefix` is never used
[INFO] [stdout]   --> src/state.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl UnCompiledNodes {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn add_prefix(&mut self, key: &[u8]) {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `last_state` and `set_in_out` are never used
[INFO] [stdout]    --> src/state.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 115 | impl UnCompiledNode {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn last_state(&self) -> &State {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn set_in_out(&mut self, _in: u8, out: u64) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_stop` is never used
[INFO] [stdout]    --> src/state.rs:240:19
[INFO] [stdout]     |
[INFO] [stdout] 216 | impl State {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 240 |     pub(crate) fn is_stop(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/encoder.rs:122:8
[INFO] [stdout]     |
[INFO] [stdout] 28  | / impl<W> Encoder<W>
[INFO] [stdout] 29  | | where
[INFO] [stdout] 30  | |     W: Write + Clear,
[INFO] [stdout]     | |_____________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 122 |       fn flush(&mut self) -> FstResult<()> {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unknown` is never constructed
[INFO] [stdout]   --> src/error.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub enum DataStoreError {
[INFO] [stdout]    |              -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 65 |         Unknown,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DataStoreError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_prefix` is never used
[INFO] [stdout]   --> src/state.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl UnCompiledNodes {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn add_prefix(&mut self, key: &[u8]) {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `last_state` and `set_in_out` are never used
[INFO] [stdout]    --> src/state.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 115 | impl UnCompiledNode {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn last_state(&self) -> &State {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn set_in_out(&mut self, _in: u8, out: u64) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_stop` is never used
[INFO] [stdout]    --> src/state.rs:240:19
[INFO] [stdout]     |
[INFO] [stdout] 216 | impl State {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 240 |     pub(crate) fn is_stop(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/builder.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |         b.add("cat".as_bytes(), 5);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let _ = b.add("cat".as_bytes(), 5);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builder.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         b.add("dog".as_bytes(), 10);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let _ = b.add("dog".as_bytes(), 10);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builder.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |         b.add("deep".as_bytes(), 15);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let _ = b.add("deep".as_bytes(), 15);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builder.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         b.add("logs".as_bytes(), 2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let _ = b.add("logs".as_bytes(), 2);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builder.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         b.finish();
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let _ = b.finish();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/builder.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         b.reset();
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let _ = b.reset();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/encoder.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |         buffer.write_u32::<BigEndian>(6);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let _ = buffer.write_u32::<BigEndian>(6);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         b.add("cat".as_bytes(), 5);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let _ = b.add("cat".as_bytes(), 5);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         b.add("deep".as_bytes(), 10);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let _ = b.add("deep".as_bytes(), 10);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         b.add("do".as_bytes(), 15);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = b.add("do".as_bytes(), 15);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         b.add("dog".as_bytes(), 2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let _ = b.add("dog".as_bytes(), 2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         b.add("dogs".as_bytes(), 8);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let _ = b.add("dogs".as_bytes(), 8);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         b.finish();
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = b.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "da1b8741850ce841412fb1b0a8ec95a684fc92bf227be358944d2c0faefeb058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1b8741850ce841412fb1b0a8ec95a684fc92bf227be358944d2c0faefeb058", kill_on_drop: false }`
[INFO] [stdout] da1b8741850ce841412fb1b0a8ec95a684fc92bf227be358944d2c0faefeb058