[INFO] fetching crate microspectrogram 0.1.0...
[INFO] checking microspectrogram-0.1.0 against master#42b384ec0dfcd528d99a4db0a337d9188a9eecaa for pr-133502-16
[INFO] extracting crate microspectrogram 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate microspectrogram 0.1.0
[INFO] finished tweaking crates.io crate microspectrogram 0.1.0
[INFO] tweaked toml for crates.io crate microspectrogram 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate microspectrogram 0.1.0 on toolchain 42b384ec0dfcd528d99a4db0a337d9188a9eecaa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42b384ec0dfcd528d99a4db0a337d9188a9eecaa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate microspectrogram 0.1.0 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" "+42b384ec0dfcd528d99a4db0a337d9188a9eecaa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded num-complex v0.4.3
[INFO] [stderr]   Downloaded libm v0.2.7
[INFO] [stderr]   Downloaded microfft v0.5.1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+42b384ec0dfcd528d99a4db0a337d9188a9eecaa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccaac90c675ef2b0f28a0bc7ad3792c73b876ae1a9b0fac9e9f1d9c07435fdc1
[INFO] running `Command { std: "docker" "start" "-a" "ccaac90c675ef2b0f28a0bc7ad3792c73b876ae1a9b0fac9e9f1d9c07435fdc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccaac90c675ef2b0f28a0bc7ad3792c73b876ae1a9b0fac9e9f1d9c07435fdc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccaac90c675ef2b0f28a0bc7ad3792c73b876ae1a9b0fac9e9f1d9c07435fdc1", kill_on_drop: false }`
[INFO] [stdout] ccaac90c675ef2b0f28a0bc7ad3792c73b876ae1a9b0fac9e9f1d9c07435fdc1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+42b384ec0dfcd528d99a4db0a337d9188a9eecaa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9388f261931ee960a8541699769dd264c56db26c9a132493ab9d7c5479d9e360
[INFO] running `Command { std: "docker" "start" "-a" "9388f261931ee960a8541699769dd264c56db26c9a132493ab9d7c5479d9e360", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking microfft v0.5.1
[INFO] [stderr]     Checking microspectrogram v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/utils.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     slice: &[T],
[INFO] [stdout]    |            ^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 38 | ) -> OverlappingWindows<T> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 | ) -> OverlappingWindows<'_, T> {
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/utils.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     slice: &[T],
[INFO] [stdout]    |            ^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 38 | ) -> OverlappingWindows<T> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 | ) -> OverlappingWindows<'_, T> {
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.28s
[INFO] running `Command { std: "docker" "inspect" "9388f261931ee960a8541699769dd264c56db26c9a132493ab9d7c5479d9e360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9388f261931ee960a8541699769dd264c56db26c9a132493ab9d7c5479d9e360", kill_on_drop: false }`
[INFO] [stdout] 9388f261931ee960a8541699769dd264c56db26c9a132493ab9d7c5479d9e360