[INFO] updating cached repository birktj/ais-decoder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/birktj/ais-decoder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/birktj/ais-decoder" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/birktj/ais-decoder"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/birktj/ais-decoder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/birktj/ais-decoder" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/birktj/ais-decoder"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/birktj/ais-decoder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4834a22c016dea70c808b2a59288f667ce9e4a25
[INFO] sha for GitHub repo birktj/ais-decoder: 4834a22c016dea70c808b2a59288f667ce9e4a25
[INFO] validating manifest of birktj/ais-decoder on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of birktj/ais-decoder on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing birktj/ais-decoder
[INFO] finished frobbing birktj/ais-decoder
[INFO] frobbed toml for birktj/ais-decoder written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/birktj/ais-decoder/Cargo.toml
[INFO] started frobbing birktj/ais-decoder
[INFO] finished frobbing birktj/ais-decoder
[INFO] frobbed toml for birktj/ais-decoder written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/birktj/ais-decoder/Cargo.toml
[INFO] crate birktj/ais-decoder already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking birktj/ais-decoder against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-0/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/birktj/ais-decoder:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 29abfa6fc2f4a4589ffe4d9afb67468f4a45e95d000f23411b119b4200b817e6
[INFO] running `"docker" "start" "-a" "29abfa6fc2f4a4589ffe4d9afb67468f4a45e95d000f23411b119b4200b817e6"`
[INFO] [stderr]     Checking gnuplot v0.0.26
[INFO] [stderr]     Checking ais-decoder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Command`, `Stdio`
[INFO] [stderr]  --> src/main.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::process::{Command, Stdio};
[INFO] [stderr]   |                    ^^^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/main.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Command`, `Stdio`
[INFO] [stderr]  --> src/main.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::process::{Command, Stdio};
[INFO] [stderr]   |                    ^^^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/main.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clock`
[INFO] [stderr]    --> src/main.rs:476:13
[INFO] [stderr]     |
[INFO] [stderr] 476 |     let mut clock = FunctionSignal::new(|x| if (x*9600.0) as i64 % 2 >= 1 {250.0} else {0.0});
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_clock`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clock`
[INFO] [stderr]    --> src/main.rs:476:13
[INFO] [stderr]     |
[INFO] [stderr] 476 |     let mut clock = FunctionSignal::new(|x| if (x*9600.0) as i64 % 2 >= 1 {250.0} else {0.0});
[INFO] [stderr]     |             ^^^^^ help: consider prefixing with an underscore: `_clock`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:469:9
[INFO] [stderr]     |
[INFO] [stderr] 469 |     let mut signal = SampledSignal::from_iterator(50000.0, data);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:476:9
[INFO] [stderr]     |
[INFO] [stderr] 476 |     let mut clock = FunctionSignal::new(|x| if (x*9600.0) as i64 % 2 >= 1 {250.0} else {0.0});
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let mut ais_data = low_pass_iter(1.0, signal.sample_iter(1.0 / (9600.0 * 20.0)))
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_wav`
[INFO] [stderr]    --> src/main.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn from_wav<R: std::io::Read>(reader: hound::WavReader<R>) -> SampledSignal<impl Iterator<Item = f64>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_slice`
[INFO] [stderr]    --> src/main.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn from_slice<'a>(sample_rate: f64, slice: &'a [f64]) -> SampledSignal<impl Iterator<Item = f64> + 'a> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_owned`
[INFO] [stderr]    --> src/main.rs:157:5
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn to_owned(self) -> SampledSignal<std::vec::IntoIter<f64>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `low_pass`
[INFO] [stderr]    --> src/main.rs:190:1
[INFO] [stderr]     |
[INFO] [stderr] 190 | fn low_pass(x: &[f32]) -> Vec<f32> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `string`
[INFO] [stderr]    --> src/main.rs:257:5
[INFO] [stderr]     |
[INFO] [stderr] 257 |     fn string(bytes: &[u8], start: usize, end: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:469:9
[INFO] [stderr]     |
[INFO] [stderr] 469 |     let mut signal = SampledSignal::from_iterator(50000.0, data);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:476:9
[INFO] [stderr]     |
[INFO] [stderr] 476 |     let mut clock = FunctionSignal::new(|x| if (x*9600.0) as i64 % 2 >= 1 {250.0} else {0.0});
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:513:9
[INFO] [stderr]     |
[INFO] [stderr] 513 |     let mut ais_data = low_pass_iter(1.0, signal.sample_iter(1.0 / (9600.0 * 20.0)))
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_wav`
[INFO] [stderr]    --> src/main.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn from_wav<R: std::io::Read>(reader: hound::WavReader<R>) -> SampledSignal<impl Iterator<Item = f64>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_slice`
[INFO] [stderr]    --> src/main.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn from_slice<'a>(sample_rate: f64, slice: &'a [f64]) -> SampledSignal<impl Iterator<Item = f64> + 'a> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_owned`
[INFO] [stderr]    --> src/main.rs:157:5
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn to_owned(self) -> SampledSignal<std::vec::IntoIter<f64>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `low_pass`
[INFO] [stderr]    --> src/main.rs:190:1
[INFO] [stderr]     |
[INFO] [stderr] 190 | fn low_pass(x: &[f32]) -> Vec<f32> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `string`
[INFO] [stderr]    --> src/main.rs:257:5
[INFO] [stderr]     |
[INFO] [stderr] 257 |     fn string(bytes: &[u8], start: usize, end: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `"docker" "inspect" "29abfa6fc2f4a4589ffe4d9afb67468f4a45e95d000f23411b119b4200b817e6"`
[INFO] running `"docker" "rm" "-f" "29abfa6fc2f4a4589ffe4d9afb67468f4a45e95d000f23411b119b4200b817e6"`
[INFO] [stdout] 29abfa6fc2f4a4589ffe4d9afb67468f4a45e95d000f23411b119b4200b817e6