[INFO] fetching crate chord-composer 0.3.1...
[INFO] checking chord-composer-0.3.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate chord-composer 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate chord-composer 0.3.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chord-composer 0.3.1
[INFO] finished tweaking crates.io crate chord-composer 0.3.1
[INFO] tweaked toml for crates.io crate chord-composer 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stopwatch v0.0.7
[INFO] [stderr]   Downloaded cpal v0.10.0
[INFO] [stderr]   Downloaded rodio v0.10.0
[INFO] [stderr]   Downloaded music-timer v0.1.6
[INFO] [stderr]   Downloaded ghakuf v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da1efcac9926df7808521dccb210a302079f1a6cfa34c1943938bcc77b4cd121
[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" "da1efcac9926df7808521dccb210a302079f1a6cfa34c1943938bcc77b4cd121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da1efcac9926df7808521dccb210a302079f1a6cfa34c1943938bcc77b4cd121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1efcac9926df7808521dccb210a302079f1a6cfa34c1943938bcc77b4cd121", kill_on_drop: false }`
[INFO] [stdout] da1efcac9926df7808521dccb210a302079f1a6cfa34c1943938bcc77b4cd121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 632ad5215d6a0a26a2b06c517e63539e4ca05ff833020fb77bf714a9bf3d1aae
[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" "632ad5215d6a0a26a2b06c517e63539e4ca05ff833020fb77bf714a9bf3d1aae", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking music-timer v0.1.6
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ogg v0.7.0
[INFO] [stderr]     Checking ghakuf v0.5.6
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rodio v0.10.0
[INFO] [stderr]     Checking chord-composer v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.82s
[INFO] running `Command { std: "docker" "inspect" "632ad5215d6a0a26a2b06c517e63539e4ca05ff833020fb77bf714a9bf3d1aae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "632ad5215d6a0a26a2b06c517e63539e4ca05ff833020fb77bf714a9bf3d1aae", kill_on_drop: false }`
[INFO] [stdout] 632ad5215d6a0a26a2b06c517e63539e4ca05ff833020fb77bf714a9bf3d1aae