[INFO] fetching crate discrete_transforms 0.1.3...
[INFO] checking discrete_transforms-0.1.3 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] extracting crate discrete_transforms 0.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate discrete_transforms 0.1.3 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discrete_transforms 0.1.3
[INFO] finished tweaking crates.io crate discrete_transforms 0.1.3
[INFO] tweaked toml for crates.io crate discrete_transforms 0.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02570734c9a50ba75526fe8b8f7783ecb94436594eaa7721fa6dbf3a638375c2
[INFO] running `Command { std: "docker" "start" "-a" "02570734c9a50ba75526fe8b8f7783ecb94436594eaa7721fa6dbf3a638375c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02570734c9a50ba75526fe8b8f7783ecb94436594eaa7721fa6dbf3a638375c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02570734c9a50ba75526fe8b8f7783ecb94436594eaa7721fa6dbf3a638375c2", kill_on_drop: false }`
[INFO] [stdout] 02570734c9a50ba75526fe8b8f7783ecb94436594eaa7721fa6dbf3a638375c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3516a913117201bce48ee1ed7ac365deb36b6760cfc04c860a014084c564455
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a3516a913117201bce48ee1ed7ac365deb36b6760cfc04c860a014084c564455", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking discrete_transforms v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/haar_1d.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut temp: Vec<f64> = output.iter().take(length).cloned().collect();
[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/haar_1d.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let (mut s, mut d) =  temp.split_at(length / 2);
[INFO] [stdout]    |                      ----^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/haar_1d.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let (mut s, mut d) =  temp.split_at(length / 2);
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/haar_1d.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let mut temp: Vec<f64> = output.iter().take(length).cloned().collect();
[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/haar_1d.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let (mut s, mut d) =  temp.split_at(length / 2);
[INFO] [stdout]    |                      ----^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/haar_1d.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 let (mut s, mut d) =  temp.split_at(length / 2);
[INFO] [stdout]    |                             ----^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "a3516a913117201bce48ee1ed7ac365deb36b6760cfc04c860a014084c564455", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3516a913117201bce48ee1ed7ac365deb36b6760cfc04c860a014084c564455", kill_on_drop: false }`
[INFO] [stdout] a3516a913117201bce48ee1ed7ac365deb36b6760cfc04c860a014084c564455