[INFO] cloning repository https://github.com/thepowersgang/inverse_fft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thepowersgang/inverse_fft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepowersgang%2Finverse_fft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepowersgang%2Finverse_fft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bca22ec676356a9f16caf40e5415329a9b4b6e4
[INFO] documenting thepowersgang/inverse_fft against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthepowersgang%2Finverse_fft" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thepowersgang/inverse_fft on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thepowersgang/inverse_fft
[INFO] finished tweaking git repo https://github.com/thepowersgang/inverse_fft
[INFO] tweaked toml for git repo https://github.com/thepowersgang/inverse_fft written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/thepowersgang/inverse_fft already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3b6c8941c59c34eb8d3eddbc6de91a2fa3e537e28b439d91f051fee52f651f0
[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" "b3b6c8941c59c34eb8d3eddbc6de91a2fa3e537e28b439d91f051fee52f651f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3b6c8941c59c34eb8d3eddbc6de91a2fa3e537e28b439d91f051fee52f651f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b6c8941c59c34eb8d3eddbc6de91a2fa3e537e28b439d91f051fee52f651f0", kill_on_drop: false }`
[INFO] [stdout] b3b6c8941c59c34eb8d3eddbc6de91a2fa3e537e28b439d91f051fee52f651f0
[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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] e89f63f4f603125aa6fe3d6d79e8f8276d2c71d054401a94ed707002ec3cd3ea
[INFO] running `Command { std: "docker" "start" "-a" "e89f63f4f603125aa6fe3d6d79e8f8276d2c71d054401a94ed707002ec3cd3ea", kill_on_drop: false }`
[INFO] [stderr]     Checking bytemuck v1.4.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num-bigint v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-rational v0.3.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]  Documenting inv_fft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let legend = (-140.0 .. -25.0);
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:20:20
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let frequencies = (10.0 .. 5500.0);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:21:53
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let fs = image_to_frequencies(&image, frequencies, (0.0 .. max_time), legend );
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/main.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 for i in (0 .. interpolation_count) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/main.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |             for i in (start .. end)
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/main.rs:183:14
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 for j in (0 .. interpolation_count) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.32s
[INFO] running `Command { std: "docker" "inspect" "e89f63f4f603125aa6fe3d6d79e8f8276d2c71d054401a94ed707002ec3cd3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e89f63f4f603125aa6fe3d6d79e8f8276d2c71d054401a94ed707002ec3cd3ea", kill_on_drop: false }`
[INFO] [stdout] e89f63f4f603125aa6fe3d6d79e8f8276d2c71d054401a94ed707002ec3cd3ea