[INFO] fetching crate hotwatch 0.4.5...
[INFO] checking hotwatch-0.4.5 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate hotwatch 0.4.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate hotwatch 0.4.5 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hotwatch 0.4.5
[INFO] finished tweaking crates.io crate hotwatch 0.4.5
[INFO] tweaked toml for crates.io crate hotwatch 0.4.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate hotwatch 0.4.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce7aa4967966b2a8f729993bd77043986040e20145a0e13ddc674c28b4a7a82f
[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" "ce7aa4967966b2a8f729993bd77043986040e20145a0e13ddc674c28b4a7a82f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce7aa4967966b2a8f729993bd77043986040e20145a0e13ddc674c28b4a7a82f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce7aa4967966b2a8f729993bd77043986040e20145a0e13ddc674c28b4a7a82f", kill_on_drop: false }`
[INFO] [stdout] ce7aa4967966b2a8f729993bd77043986040e20145a0e13ddc674c28b4a7a82f
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ab60c451e15dec0e71a725dd23946fa7ea8c3756ea0d267c2c283c07c22f10
[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" "51ab60c451e15dec0e71a725dd23946fa7ea8c3756ea0d267c2c283c07c22f10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking inotify-sys v0.1.4
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking hotwatch v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> examples/json.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 |         if changed.compare_and_swap(true, false, Ordering::AcqRel) {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.36s
[INFO] running `Command { std: "docker" "inspect" "51ab60c451e15dec0e71a725dd23946fa7ea8c3756ea0d267c2c283c07c22f10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ab60c451e15dec0e71a725dd23946fa7ea8c3756ea0d267c2c283c07c22f10", kill_on_drop: false }`
[INFO] [stdout] 51ab60c451e15dec0e71a725dd23946fa7ea8c3756ea0d267c2c283c07c22f10