[INFO] fetching crate slog-atomic 3.0.0...
[INFO] checking slog-atomic-3.0.0 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate slog-atomic 3.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate slog-atomic 3.0.0 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-atomic 3.0.0
[INFO] finished tweaking crates.io crate slog-atomic 3.0.0
[INFO] tweaked toml for crates.io crate slog-atomic 3.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate slog-atomic 3.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arc-swap v0.4.0
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8842ef6b35da0bcea97a29ecc9281dfe7154e725b7fbc499616f25a12c8a8eba
[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" "8842ef6b35da0bcea97a29ecc9281dfe7154e725b7fbc499616f25a12c8a8eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8842ef6b35da0bcea97a29ecc9281dfe7154e725b7fbc499616f25a12c8a8eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8842ef6b35da0bcea97a29ecc9281dfe7154e725b7fbc499616f25a12c8a8eba", kill_on_drop: false }`
[INFO] [stdout] 8842ef6b35da0bcea97a29ecc9281dfe7154e725b7fbc499616f25a12c8a8eba
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d350ad7b56ad9c9112279aeb4ee8980b0dff24f4d779441e7d1ca4ad484feec
[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" "0d350ad7b56ad9c9112279aeb4ee8980b0dff24f4d779441e7d1ca4ad484feec", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking arc-swap v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking slog-atomic v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking slog-term v2.4.1
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking slog-json v2.3.0
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/signal.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/signal.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     // global atomic switch drain control
[INFO] [stdout] 22 | |     static ref ATOMIC_DRAIN_SWITCH : AtomicSwitchCtrl<(), io::Error> = AtomicSwitch::new(
[INFO] [stdout] 23 | |         Discard.map_err(|_| io::Error::new(io::ErrorKind::Other, "should not happen"))
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     static ref SWITCH_SCHEDULED: AtomicBool = AtomicBool::new(false);
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/signal.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     // global atomic switch drain control
[INFO] [stdout] 22 | |     static ref ATOMIC_DRAIN_SWITCH : AtomicSwitchCtrl<(), io::Error> = AtomicSwitch::new(
[INFO] [stdout] 23 | |         Discard.map_err(|_| io::Error::new(io::ErrorKind::Other, "should not happen"))
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     static ref SWITCH_SCHEDULED: AtomicBool = AtomicBool::new(false);
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/signal.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     // global atomic switch drain control
[INFO] [stdout] 22 | |     static ref ATOMIC_DRAIN_SWITCH : AtomicSwitchCtrl<(), io::Error> = AtomicSwitch::new(
[INFO] [stdout] 23 | |         Discard.map_err(|_| io::Error::new(io::ErrorKind::Other, "should not happen"))
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     static ref SWITCH_SCHEDULED: AtomicBool = AtomicBool::new(false);
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.17s
[INFO] running `Command { std: "docker" "inspect" "0d350ad7b56ad9c9112279aeb4ee8980b0dff24f4d779441e7d1ca4ad484feec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d350ad7b56ad9c9112279aeb4ee8980b0dff24f4d779441e7d1ca4ad484feec", kill_on_drop: false }`
[INFO] [stdout] 0d350ad7b56ad9c9112279aeb4ee8980b0dff24f4d779441e7d1ca4ad484feec