[INFO] fetching crate matching-network-rs 0.0.1...
[INFO] checking matching-network-rs-0.0.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate matching-network-rs 0.0.1 into /workspace/builds/worker-119/source
[INFO] validating manifest of crates.io crate matching-network-rs 0.0.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate matching-network-rs 0.0.1
[INFO] finished tweaking crates.io crate matching-network-rs 0.0.1
[INFO] tweaked toml for crates.io crate matching-network-rs 0.0.1 written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] crate crates.io crate matching-network-rs 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.4.0
[INFO] [stderr]   Downloaded num-bigint v0.4.2
[INFO] [stderr]   Downloaded dimensioned v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1ba4c916ce1263cac9f0d033f046ae38ea1b1b2688f7d1b970bbad1476ebf9b
[INFO] running `Command { std: "docker" "start" "-a" "e1ba4c916ce1263cac9f0d033f046ae38ea1b1b2688f7d1b970bbad1476ebf9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1ba4c916ce1263cac9f0d033f046ae38ea1b1b2688f7d1b970bbad1476ebf9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ba4c916ce1263cac9f0d033f046ae38ea1b1b2688f7d1b970bbad1476ebf9b", kill_on_drop: false }`
[INFO] [stdout] e1ba4c916ce1263cac9f0d033f046ae38ea1b1b2688f7d1b970bbad1476ebf9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68af77a5c2c43e6e746d747b0961b1795a1177b9f00f4a6fa1ad3dd94f2451bd
[INFO] running `Command { std: "docker" "start" "-a" "68af77a5c2c43e6e746d747b0961b1795a1177b9f00f4a6fa1ad3dd94f2451bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling dimensioned v0.7.0
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking generic-array v0.11.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking matching-network-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `freq`
[INFO] [stdout]   --> src/matching_network.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn eval_at(&self, freq: dim::si::Hertz<f64>) -> Vec<f64> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_freq`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `freq`
[INFO] [stdout]   --> src/matching_network.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn eval_at(&self, freq: dim::si::Hertz<f64>) -> Vec<f64> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_freq`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matching_network.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut ans;
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/matching_network.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut ans;
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.49s
[INFO] running `Command { std: "docker" "inspect" "68af77a5c2c43e6e746d747b0961b1795a1177b9f00f4a6fa1ad3dd94f2451bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68af77a5c2c43e6e746d747b0961b1795a1177b9f00f4a6fa1ad3dd94f2451bd", kill_on_drop: false }`
[INFO] [stdout] 68af77a5c2c43e6e746d747b0961b1795a1177b9f00f4a6fa1ad3dd94f2451bd