[INFO] fetching crate bs1770 1.0.0...
[INFO] building bs1770-1.0.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate bs1770 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bs1770 1.0.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate bs1770 1.0.0
[INFO] finished tweaking crates.io crate bs1770 1.0.0
[INFO] tweaked toml for crates.io crate bs1770 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate bs1770 1.0.0 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hound v3.4.0
[INFO] [stderr]   Downloaded libc v0.2.76
[INFO] [stderr]   Downloaded claxon v0.4.3
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 943c00bf91c65c25a00103a1cb89252cd03357d7ba3ceec407d23c56f0c51e3e
[INFO] running `Command { std: "docker" "start" "-a" "943c00bf91c65c25a00103a1cb89252cd03357d7ba3ceec407d23c56f0c51e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "943c00bf91c65c25a00103a1cb89252cd03357d7ba3ceec407d23c56f0c51e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "943c00bf91c65c25a00103a1cb89252cd03357d7ba3ceec407d23c56f0c51e3e", kill_on_drop: false }`
[INFO] [stdout] 943c00bf91c65c25a00103a1cb89252cd03357d7ba3ceec407d23c56f0c51e3e
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2c34883e29b6d0b402e1806cb1f16f0a719d7a204d29dba714a8046264b07b1
[INFO] running `Command { std: "docker" "start" "-a" "b2c34883e29b6d0b402e1806cb1f16f0a719d7a204d29dba714a8046264b07b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling bs1770 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "b2c34883e29b6d0b402e1806cb1f16f0a719d7a204d29dba714a8046264b07b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c34883e29b6d0b402e1806cb1f16f0a719d7a204d29dba714a8046264b07b1", kill_on_drop: false }`
[INFO] [stdout] b2c34883e29b6d0b402e1806cb1f16f0a719d7a204d29dba714a8046264b07b1
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c54ceee20e0ebf220ef63efb3f0817703190dc09046c9e0cc0dd9bdcc67d7b15
[INFO] running `Command { std: "docker" "start" "-a" "c54ceee20e0ebf220ef63efb3f0817703190dc09046c9e0cc0dd9bdcc67d7b15", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling claxon v0.4.3
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling bs1770 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `mean_power`
[INFO] [stdout]   --> examples/waveform.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let mean_power = bs1770::gated_mean(zipped.as_ref());
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mean_power`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "c54ceee20e0ebf220ef63efb3f0817703190dc09046c9e0cc0dd9bdcc67d7b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c54ceee20e0ebf220ef63efb3f0817703190dc09046c9e0cc0dd9bdcc67d7b15", kill_on_drop: false }`
[INFO] [stdout] c54ceee20e0ebf220ef63efb3f0817703190dc09046c9e0cc0dd9bdcc67d7b15