[INFO] fetching crate sampler 0.2.0...
[INFO] testing sampler-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate sampler 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate sampler 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sampler 0.2.0
[INFO] finished tweaking crates.io crate sampler 0.2.0
[INFO] tweaked toml for crates.io crate sampler 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded find_folder v0.3.0
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded bitflags v0.3.3
[INFO] [stderr]   Downloaded serde v0.7.15
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded serde_json v0.7.4
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded hound v2.0.0
[INFO] [stderr]   Downloaded pitch_calc v0.11.1
[INFO] [stderr]   Downloaded instrument v0.2.0
[INFO] [stderr]   Downloaded time_calc v0.11.1
[INFO] [stderr]   Downloaded portaudio v0.6.4
[INFO] [stderr]   Downloaded sample v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42c11383cab0d84051a7454de98780c1d8c154c98d4d04fb5d3a20e1b24a5d8c
[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" "42c11383cab0d84051a7454de98780c1d8c154c98d4d04fb5d3a20e1b24a5d8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42c11383cab0d84051a7454de98780c1d8c154c98d4d04fb5d3a20e1b24a5d8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c11383cab0d84051a7454de98780c1d8c154c98d4d04fb5d3a20e1b24a5d8c", kill_on_drop: false }`
[INFO] [stdout] 42c11383cab0d84051a7454de98780c1d8c154c98d4d04fb5d3a20e1b24a5d8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15d65ceda2ea1052a63ea9b829a722b32d3c143a08e1fb83d22732e5cef78cae
[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" "15d65ceda2ea1052a63ea9b829a722b32d3c143a08e1fb83d22732e5cef78cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling hound v2.0.0
[INFO] [stderr]    Compiling sample v0.6.2
[INFO] [stderr]    Compiling time_calc v0.11.1
[INFO] [stderr]    Compiling pitch_calc v0.11.1
[INFO] [stderr]    Compiling instrument v0.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/sample-0.6.2/src/window.rs:57:41
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let v = phase.to_float_sample().to_sample() * PI_2;
[INFO] [stdout]    |                                         ^^^^^^^^^ cannot infer type for type parameter `S` declared on the associated function `to_sample`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the type argument in the method call
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let v = phase.to_float_sample().to_sample::<S>() * PI_2;
[INFO] [stdout]    |                                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sample` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "15d65ceda2ea1052a63ea9b829a722b32d3c143a08e1fb83d22732e5cef78cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d65ceda2ea1052a63ea9b829a722b32d3c143a08e1fb83d22732e5cef78cae", kill_on_drop: false }`
[INFO] [stdout] 15d65ceda2ea1052a63ea9b829a722b32d3c143a08e1fb83d22732e5cef78cae