[INFO] fetching crate ring-channel 0.8.2...
[INFO] checking ring-channel-0.8.2 against beta for pr-78714
[INFO] extracting crate ring-channel 0.8.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ring-channel 0.8.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ring-channel 0.8.2
[INFO] finished tweaking crates.io crate ring-channel 0.8.2
[INFO] tweaked toml for crates.io crate ring-channel 0.8.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 007425715b8587d904cb5c927836fdd8a4ac5b6f5e67ad6d7a1895e1af3ffe79
[INFO] running `Command { std: "docker" "start" "-a" "007425715b8587d904cb5c927836fdd8a4ac5b6f5e67ad6d7a1895e1af3ffe79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "007425715b8587d904cb5c927836fdd8a4ac5b6f5e67ad6d7a1895e1af3ffe79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007425715b8587d904cb5c927836fdd8a4ac5b6f5e67ad6d7a1895e1af3ffe79", kill_on_drop: false }`
[INFO] [stdout] 007425715b8587d904cb5c927836fdd8a4ac5b6f5e67ad6d7a1895e1af3ffe79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 6485bc5087896331deabeed6496e941c39b722264364eaac2d9b233adfd78410
[INFO] running `Command { std: "docker" "start" "-a" "6485bc5087896331deabeed6496e941c39b722264364eaac2d9b233adfd78410", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking fragile v1.0.0
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking spinning_top v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling mockall_derive v0.7.2
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking ring-channel v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.1.4
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking mockall v0.7.2
[INFO] [stderr]    Compiling proptest-derive v0.1.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.91s
[INFO] running `Command { std: "docker" "inspect" "6485bc5087896331deabeed6496e941c39b722264364eaac2d9b233adfd78410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6485bc5087896331deabeed6496e941c39b722264364eaac2d9b233adfd78410", kill_on_drop: false }`
[INFO] [stdout] 6485bc5087896331deabeed6496e941c39b722264364eaac2d9b233adfd78410