[INFO] fetching crate volume 0.4.0...
[INFO] checking volume-0.4.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate volume 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate volume 0.4.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate volume 0.4.0
[INFO] finished tweaking crates.io crate volume 0.4.0
[INFO] tweaked toml for crates.io crate volume 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 833cbf722ac7ab9283d791edb1233d4c843ea4e9bd718d653b8e2df147e6b894
[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" "833cbf722ac7ab9283d791edb1233d4c843ea4e9bd718d653b8e2df147e6b894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "833cbf722ac7ab9283d791edb1233d4c843ea4e9bd718d653b8e2df147e6b894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "833cbf722ac7ab9283d791edb1233d4c843ea4e9bd718d653b8e2df147e6b894", kill_on_drop: false }`
[INFO] [stdout] 833cbf722ac7ab9283d791edb1233d4c843ea4e9bd718d653b8e2df147e6b894
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--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] 54a5dca42a3882e8046a5815895b8e7cd3d9707534da6664911b0c0808fbfbf2
[INFO] running `Command { std: "docker" "start" "-a" "54a5dca42a3882e8046a5815895b8e7cd3d9707534da6664911b0c0808fbfbf2", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking sample v0.6.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking petgraph v0.2.10
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking daggy v0.4.1
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking dsp-chain v0.13.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking time_calc v0.11.1
[INFO] [stderr]     Checking volume v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Frame`
[INFO] [stdout]   --> src/lib.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |         use dsp::{Frame, Sample};
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Frame`
[INFO] [stdout]   --> src/lib.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 |         use dsp::{Frame, Sample};
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.34s
[INFO] running `Command { std: "docker" "inspect" "54a5dca42a3882e8046a5815895b8e7cd3d9707534da6664911b0c0808fbfbf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a5dca42a3882e8046a5815895b8e7cd3d9707534da6664911b0c0808fbfbf2", kill_on_drop: false }`
[INFO] [stdout] 54a5dca42a3882e8046a5815895b8e7cd3d9707534da6664911b0c0808fbfbf2