[INFO] fetching crate unbounded-spsc 0.1.6...
[INFO] checking unbounded-spsc-0.1.6 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate unbounded-spsc 0.1.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate unbounded-spsc 0.1.6 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unbounded-spsc 0.1.6
[INFO] finished tweaking crates.io crate unbounded-spsc 0.1.6
[INFO] tweaked toml for crates.io crate unbounded-spsc 0.1.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate unbounded-spsc 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dee8a76a0542cecdb5ac29b232e378c5b7989925ffad9588623335c15797720f
[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" "dee8a76a0542cecdb5ac29b232e378c5b7989925ffad9588623335c15797720f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee8a76a0542cecdb5ac29b232e378c5b7989925ffad9588623335c15797720f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee8a76a0542cecdb5ac29b232e378c5b7989925ffad9588623335c15797720f", kill_on_drop: false }`
[INFO] [stdout] dee8a76a0542cecdb5ac29b232e378c5b7989925ffad9588623335c15797720f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] 35863a94e63a92120ffcb7895487d898395ef82d965dbee4177ff95b9ec57605
[INFO] running `Command { std: "docker" "start" "-a" "35863a94e63a92120ffcb7895487d898395ef82d965dbee4177ff95b9ec57605", kill_on_drop: false }`
[INFO] [stderr]     Checking bounded-spsc-queue v0.4.0
[INFO] [stderr]     Checking unbounded-spsc v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/select.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |   packet   : &'rx (Packet + 'rx),
[INFO] [stdout]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Packet + 'rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:476:32
[INFO] [stdout]     |
[INFO] [stdout] 476 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:498:32
[INFO] [stdout]     |
[INFO] [stdout] 498 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:520:32
[INFO] [stdout]     |
[INFO] [stdout] 520 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/select.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |   packet   : &'rx (Packet + 'rx),
[INFO] [stdout]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Packet + 'rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:291:28
[INFO] [stdout]     |
[INFO] [stdout] 291 |       _bar = rx2.recv() => { panic!() }
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:295:28
[INFO] [stdout]     |
[INFO] [stdout] 295 |       _foo = rx1.recv() => { panic!() },
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:296:27
[INFO] [stdout]     |
[INFO] [stdout] 296 |       bar = rx2.recv() => { assert_eq!(bar.unwrap(), 2) }
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:301:28
[INFO] [stdout]     |
[INFO] [stdout] 301 |       _bar = rx2.recv() => { panic!() }
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:318:28
[INFO] [stdout]     |
[INFO] [stdout] 318 |       _foo = rx1.recv() => { panic!("1") },
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:319:28
[INFO] [stdout]     |
[INFO] [stdout] 319 |       _foo = rx2.recv() => { panic!("2") },
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:320:28
[INFO] [stdout]     |
[INFO] [stdout] 320 |       _foo = rx3.recv() => { panic!("3") },
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:321:28
[INFO] [stdout]     |
[INFO] [stdout] 321 |       _foo = rx4.recv() => { panic!("4") },
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:333:27
[INFO] [stdout]     |
[INFO] [stdout] 333 |       _a1 = rx1.recv() => { panic!() },
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:353:26
[INFO] [stdout]     |
[INFO] [stdout] 353 |       _b = rx2.recv() => { panic!() }
[INFO] [stdout]     |                          ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:357:25
[INFO] [stdout]     |
[INFO] [stdout] 357 |       a = rx1.recv() => { assert!(a.is_err()) },
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/select.rs:358:26
[INFO] [stdout]     |
[INFO] [stdout] 358 |       _b = rx2.recv() => { panic!() }
[INFO] [stdout]     |                          ^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:476:32
[INFO] [stdout]     |
[INFO] [stdout] 476 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:498:32
[INFO] [stdout]     |
[INFO] [stdout] 498 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:520:32
[INFO] [stdout]     |
[INFO] [stdout] 520 |   fn cause (&self) -> Option <&std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/parallel-recv.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |   : std::sync::atomic::AtomicBool = std::sync::atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/parallel-recv.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |   : std::sync::atomic::AtomicBool = std::sync::atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/parallel-try_recv.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |   : std::sync::atomic::AtomicBool = std::sync::atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_BOOL_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> examples/parallel-try_recv.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 |   : std::sync::atomic::AtomicBool = std::sync::atomic::ATOMIC_BOOL_INIT;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicBool::new(false)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "35863a94e63a92120ffcb7895487d898395ef82d965dbee4177ff95b9ec57605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35863a94e63a92120ffcb7895487d898395ef82d965dbee4177ff95b9ec57605", kill_on_drop: false }`
[INFO] [stdout] 35863a94e63a92120ffcb7895487d898395ef82d965dbee4177ff95b9ec57605