[INFO] cloning repository https://github.com/willbeason/chaos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willbeason/chaos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fchaos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fchaos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6e04016fdda47fed550a05a8e54b4277edd1c9
[INFO] checking willbeason/chaos against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillbeason%2Fchaos" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/willbeason/chaos
[INFO] finished tweaking git repo https://github.com/willbeason/chaos
[INFO] tweaked toml for git repo https://github.com/willbeason/chaos written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/willbeason/chaos on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/willbeason/chaos 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f604a0eaea777da24d50d77140508b0d6ce43748cf687b2238324da44e9bc06
[INFO] running `Command { std: "docker" "start" "-a" "6f604a0eaea777da24d50d77140508b0d6ce43748cf687b2238324da44e9bc06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f604a0eaea777da24d50d77140508b0d6ce43748cf687b2238324da44e9bc06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f604a0eaea777da24d50d77140508b0d6ce43748cf687b2238324da44e9bc06", kill_on_drop: false }`
[INFO] [stdout] 6f604a0eaea777da24d50d77140508b0d6ce43748cf687b2238324da44e9bc06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6659a2f60969c9734f5ef891a5b1a03666b7e67131175930d5c1d4cd0780607a
[INFO] running `Command { std: "docker" "start" "-a" "6659a2f60969c9734f5ef891a5b1a03666b7e67131175930d5c1d4cd0780607a", kill_on_drop: false }`
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking chaos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `idx` is assigned to, but never used
[INFO] [stdout]   --> src/models/mod.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut idx = 0;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_idx` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `min_x` is never read
[INFO] [stdout]   --> src/models/mod.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let mut min_x = f64::INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `max_x` is never read
[INFO] [stdout]   --> src/models/mod.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut max_x = f64::NEG_INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `min_y` is never read
[INFO] [stdout]   --> src/models/mod.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut min_y = f64::INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `max_y` is never read
[INFO] [stdout]   --> src/models/mod.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut max_y = f64::NEG_INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]   --> src/models/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         idx += 1;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `forward2` is never used
[INFO] [stdout]   --> src/models/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Spring {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn forward2(&self, x0: f64, v0: f64, t0: f64, h: f64) -> (f64, f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `idx` is assigned to, but never used
[INFO] [stdout]   --> src/models/mod.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut idx = 0;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_idx` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `min_x` is never read
[INFO] [stdout]   --> src/models/mod.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let mut min_x = f64::INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `max_x` is never read
[INFO] [stdout]   --> src/models/mod.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut max_x = f64::NEG_INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `min_y` is never read
[INFO] [stdout]   --> src/models/mod.rs:51:21
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut min_y = f64::INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `max_y` is never read
[INFO] [stdout]   --> src/models/mod.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut max_y = f64::NEG_INFINITY;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `idx` is never read
[INFO] [stdout]   --> src/models/mod.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |         idx += 1;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `forward2` is never used
[INFO] [stdout]   --> src/models/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Spring {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn forward2(&self, x0: f64, v0: f64, t0: f64, h: f64) -> (f64, f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.03s
[INFO] running `Command { std: "docker" "inspect" "6659a2f60969c9734f5ef891a5b1a03666b7e67131175930d5c1d4cd0780607a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6659a2f60969c9734f5ef891a5b1a03666b7e67131175930d5c1d4cd0780607a", kill_on_drop: false }`
[INFO] [stdout] 6659a2f60969c9734f5ef891a5b1a03666b7e67131175930d5c1d4cd0780607a