[INFO] fetching crate temporal-field 0.4.0...
[INFO] checking temporal-field-0.4.0 against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-1
[INFO] extracting crate temporal-field 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate temporal-field 0.4.0
[INFO] finished tweaking crates.io crate temporal-field 0.4.0
[INFO] tweaked toml for crates.io crate temporal-field 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate temporal-field 0.4.0 on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate temporal-field 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "75f7bdf25cd690c6039b85b02a46ef8d1a7faf77a5cb32a738f6e22b05d1c038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f7bdf25cd690c6039b85b02a46ef8d1a7faf77a5cb32a738f6e22b05d1c038", kill_on_drop: false }`
[INFO] [stdout] 75f7bdf25cd690c6039b85b02a46ef8d1a7faf77a5cb32a738f6e22b05d1c038
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 977f60fb41c905997ecf6d38ea7149b40ae7aa6b750d23c116f50e5aeeb43d35
[INFO] running `Command { std: "docker" "start" "-a" "977f60fb41c905997ecf6d38ea7149b40ae7aa6b750d23c116f50e5aeeb43d35", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking ternary-signal v0.3.0
[INFO] [stderr]     Checking temporal-field v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/observer.rs:163:12","p":3,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:577:59","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:578:58","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:583:59","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:584:58","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:588:59","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:589:58","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:594:59","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:595:58","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/field.rs:599:59","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:240:42","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:241:42","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:255:46","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:269:44","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:271:43","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:294:41","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:331:43","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/vector.rs:345:33","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:435:36
[INFO] [stdout]     |
[INFO] [stdout] 435 |         let signals = vec![Signal::positive(128); 32];
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:448:36
[INFO] [stdout]     |
[INFO] [stdout] 448 |         let signals = vec![Signal::positive(200); 64];
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:478:36
[INFO] [stdout]     |
[INFO] [stdout] 478 |         let signals = vec![Signal::positive(128); 32];
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:505:36
[INFO] [stdout]     |
[INFO] [stdout] 505 |         let signals = vec![Signal::positive(128); 32];
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:519:40
[INFO] [stdout]     |
[INFO] [stdout] 519 |             let signals = vec![Signal::positive(((i + 1) * 25) as u8); 64];
[INFO] [stdout]     |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:534:40
[INFO] [stdout]     |
[INFO] [stdout] 534 |             let signals = vec![Signal::positive(((i + 1) * 50) as u8); 1];
[INFO] [stdout]     |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:576:36
[INFO] [stdout]     |
[INFO] [stdout] 576 |         field.set_region(&[Signal::positive(120)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:582:36
[INFO] [stdout]     |
[INFO] [stdout] 582 |         field.set_region(&[Signal::positive(70)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:587:36
[INFO] [stdout]     |
[INFO] [stdout] 587 |         field.set_region(&[Signal::positive(40)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:593:36
[INFO] [stdout]     |
[INFO] [stdout] 593 |         field.set_region(&[Signal::positive(70)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:598:36
[INFO] [stdout]     |
[INFO] [stdout] 598 |         field.set_region(&[Signal::positive(120)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] [FMTARGS] {"crate":"temporal_field","loc":"src/observer.rs:163:12","p":3,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:608:36
[INFO] [stdout]     |
[INFO] [stdout] 608 |         field.set_region(&[Signal::positive(60)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:610:36
[INFO] [stdout]     |
[INFO] [stdout] 610 |         field.set_region(&[Signal::positive(120)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/field.rs:612:36
[INFO] [stdout]     |
[INFO] [stdout] 612 |         field.set_region(&[Signal::positive(180)], 0..1);
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::from_signed_i32`: defaults multiplier to 1 — use Signal::from_current(val) for full p × m × k range
[INFO] [stdout]   --> src/vector.rs:84:37
[INFO] [stdout]    |
[INFO] [stdout] 84 |         self.signals[idx] = Signal::from_signed_i32(value as i32);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/vector.rs:222:26
[INFO] [stdout]     |
[INFO] [stdout] 222 |         v.set(0, Signal::positive(200));
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::negative`: use Signal::negative_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/vector.rs:223:27
[INFO] [stdout]     |
[INFO] [stdout] 223 |         v.set(10, Signal::negative(128));
[INFO] [stdout]     |                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::negative`: use Signal::negative_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/vector.rs:300:36
[INFO] [stdout]     |
[INFO] [stdout] 300 |         let signals = vec![Signal::negative(50); 4];
[INFO] [stdout]     |                                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::positive`: use Signal::positive_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/vector.rs:313:26
[INFO] [stdout]     |
[INFO] [stdout] 313 |         v.set(5, Signal::positive(100));
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::negative`: use Signal::negative_amplified(mag, mul) — s = p × m × k requires all three values
[INFO] [stdout]    --> src/vector.rs:314:26
[INFO] [stdout]     |
[INFO] [stdout] 314 |         v.set(6, Signal::negative(200));
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `ternary_signal::Signal::from_signed_i32`: defaults multiplier to 1 — use Signal::from_current(val) for full p × m × k range
[INFO] [stdout]   --> src/vector.rs:84:37
[INFO] [stdout]    |
[INFO] [stdout] 84 |         self.signals[idx] = Signal::from_signed_i32(value as i32);
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChannelObserver` is never constructed
[INFO] [stdout]   --> src/observer.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct ChannelObserver {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observer.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl ChannelObserver {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 76 |     pub fn new(sender: std::sync::mpsc::Sender<FieldEvent>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChannelObserver` is never constructed
[INFO] [stdout]   --> src/observer.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct ChannelObserver {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observer.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl ChannelObserver {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 76 |     pub fn new(sender: std::sync::mpsc::Sender<FieldEvent>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.16s
[INFO] running `Command { std: "docker" "inspect" "977f60fb41c905997ecf6d38ea7149b40ae7aa6b750d23c116f50e5aeeb43d35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "977f60fb41c905997ecf6d38ea7149b40ae7aa6b750d23c116f50e5aeeb43d35", kill_on_drop: false }`
[INFO] [stdout] 977f60fb41c905997ecf6d38ea7149b40ae7aa6b750d23c116f50e5aeeb43d35