[INFO] fetching crate hotwatch 0.4.3...
[INFO] checking hotwatch-0.4.3 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate hotwatch 0.4.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate hotwatch 0.4.3 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hotwatch 0.4.3
[INFO] finished tweaking crates.io crate hotwatch 0.4.3
[INFO] tweaked toml for crates.io crate hotwatch 0.4.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate hotwatch 0.4.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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] 5b77117a7550d1a357a9a1f4586f20a0897ef4065b4eaa28f9e807c8b1528ed3
[INFO] running `Command { std: "docker" "start" "-a" "5b77117a7550d1a357a9a1f4586f20a0897ef4065b4eaa28f9e807c8b1528ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b77117a7550d1a357a9a1f4586f20a0897ef4065b4eaa28f9e807c8b1528ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b77117a7550d1a357a9a1f4586f20a0897ef4065b4eaa28f9e807c8b1528ed3", kill_on_drop: false }`
[INFO] [stdout] 5b77117a7550d1a357a9a1f4586f20a0897ef4065b4eaa28f9e807c8b1528ed3
[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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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] 084bae39cf7166639fc4e794aada83b391876ba31be6d2fc39ba7c72588cfa4f
[INFO] running `Command { std: "docker" "start" "-a" "084bae39cf7166639fc4e794aada83b391876ba31be6d2fc39ba7c72588cfa4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking notify v4.0.14
[INFO] [stderr]     Checking hotwatch v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.51s
[INFO] running `Command { std: "docker" "inspect" "084bae39cf7166639fc4e794aada83b391876ba31be6d2fc39ba7c72588cfa4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084bae39cf7166639fc4e794aada83b391876ba31be6d2fc39ba7c72588cfa4f", kill_on_drop: false }`
[INFO] [stdout] 084bae39cf7166639fc4e794aada83b391876ba31be6d2fc39ba7c72588cfa4f