[INFO] fetching crate music-timer 0.1.6...
[INFO] checking music-timer-0.1.6 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate music-timer 0.1.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate music-timer 0.1.6 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate music-timer 0.1.6
[INFO] finished tweaking crates.io crate music-timer 0.1.6
[INFO] tweaked toml for crates.io crate music-timer 0.1.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate music-timer 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", 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] f79fa106b34be8b47a44068aace83141eaa1b634d10d121ca498f9765279cb04
[INFO] running `Command { std: "docker" "start" "-a" "f79fa106b34be8b47a44068aace83141eaa1b634d10d121ca498f9765279cb04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79fa106b34be8b47a44068aace83141eaa1b634d10d121ca498f9765279cb04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79fa106b34be8b47a44068aace83141eaa1b634d10d121ca498f9765279cb04", kill_on_drop: false }`
[INFO] [stdout] f79fa106b34be8b47a44068aace83141eaa1b634d10d121ca498f9765279cb04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "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] aa6fef3308e7eb5bab9a3009ed9c108d68c3b53dca1ffa2010f4c0960c8299b3
[INFO] running `Command { std: "docker" "start" "-a" "aa6fef3308e7eb5bab9a3009ed9c108d68c3b53dca1ffa2010f4c0960c8299b3", kill_on_drop: false }`
[INFO] [stderr]     Checking music-timer v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "aa6fef3308e7eb5bab9a3009ed9c108d68c3b53dca1ffa2010f4c0960c8299b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa6fef3308e7eb5bab9a3009ed9c108d68c3b53dca1ffa2010f4c0960c8299b3", kill_on_drop: false }`
[INFO] [stdout] aa6fef3308e7eb5bab9a3009ed9c108d68c3b53dca1ffa2010f4c0960c8299b3