[INFO] fetching crate ring_buffer 0.1.3...
[INFO] testing ring_buffer-0.1.3 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate ring_buffer 0.1.3 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate ring_buffer 0.1.3 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ring_buffer 0.1.3
[INFO] finished tweaking crates.io crate ring_buffer 0.1.3
[INFO] tweaked toml for crates.io crate ring_buffer 0.1.3 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f484d41a59f2960ea5d8102621e6602f91998ed42dbf321aaa4d6505d18eefc
[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" "1f484d41a59f2960ea5d8102621e6602f91998ed42dbf321aaa4d6505d18eefc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f484d41a59f2960ea5d8102621e6602f91998ed42dbf321aaa4d6505d18eefc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f484d41a59f2960ea5d8102621e6602f91998ed42dbf321aaa4d6505d18eefc", kill_on_drop: false }`
[INFO] [stdout] 1f484d41a59f2960ea5d8102621e6602f91998ed42dbf321aaa4d6505d18eefc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 477d8e38defd26a61747eef00e72013c8879e234847a45f11e8838c7e0193c68
[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" "477d8e38defd26a61747eef00e72013c8879e234847a45f11e8838c7e0193c68", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ring_buffer v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:878:13
[INFO] [stdout]     |
[INFO] [stdout] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:880:13
[INFO] [stdout]     |
[INFO] [stdout] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "477d8e38defd26a61747eef00e72013c8879e234847a45f11e8838c7e0193c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "477d8e38defd26a61747eef00e72013c8879e234847a45f11e8838c7e0193c68", kill_on_drop: false }`
[INFO] [stdout] 477d8e38defd26a61747eef00e72013c8879e234847a45f11e8838c7e0193c68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28a098f3ec2bcb6974453a9610862171e29a728f9220585848508c13cd6a0ed4
[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" "28a098f3ec2bcb6974453a9610862171e29a728f9220585848508c13cd6a0ed4", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:878:13
[INFO] [stdout]     |
[INFO] [stdout] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:880:13
[INFO] [stdout]     |
[INFO] [stdout] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ring_buffer v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:878:13
[INFO] [stdout]     |
[INFO] [stdout] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:880:13
[INFO] [stdout]     |
[INFO] [stdout] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "28a098f3ec2bcb6974453a9610862171e29a728f9220585848508c13cd6a0ed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28a098f3ec2bcb6974453a9610862171e29a728f9220585848508c13cd6a0ed4", kill_on_drop: false }`
[INFO] [stdout] 28a098f3ec2bcb6974453a9610862171e29a728f9220585848508c13cd6a0ed4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", 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] 8096b77dccb797581848322a63cbe45a37253aa0b1b4ec73d783b41f02e0d020
[INFO] running `Command { std: "docker" "start" "-a" "8096b77dccb797581848322a63cbe45a37253aa0b1b4ec73d783b41f02e0d020", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:878:13
[INFO] [stderr]     |
[INFO] [stderr] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:880:13
[INFO] [stderr]     |
[INFO] [stderr] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:878:13
[INFO] [stderr]     |
[INFO] [stderr] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:880:13
[INFO] [stderr]     |
[INFO] [stderr] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ring_buffer-4f1993cab12ad71f
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ring_buffer
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::access_and_reallocations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:878:13
[INFO] [stderr]     |
[INFO] [stderr] 878 |             ((index & self.mask()).wrapping_sub(self.head) >= (self.capacity - self.len))
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:880:13
[INFO] [stderr]     |
[INFO] [stderr] 880 |             ((index & self.mask()).wrapping_sub(self.tail) < self.len)
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stdout] running 29 tests
[INFO] [stderr] 
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::capacity (line 203) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::clear (line 218) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::is_full (line 511) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_relative (line 442) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_mut_unchecked (line 413) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_relative_mut (line 467) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::back (line 160) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_unchecked (line 384) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute (line 314) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::get_absolute_mut (line 348) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::is_empty (line 494) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::back_mut (line 180) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::contains (line 241) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::front (line 265) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::front_mut (line 285) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::as_slices (line 114) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::len (line 581) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::pop (line 599) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::new (line 56) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::shrink_to_fit (line 754) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::push (line 630) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::iter (line 530) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::shrink_to (line 688) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::swap_absolute (line 821) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::reserve (line 663) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::truncate (line 855) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::iter_mut (line 555) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::swap_relative (line 780) ... ok
[INFO] [stdout] test src/lib.rs - RingBuffer<T>::with_capacity (line 71) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8096b77dccb797581848322a63cbe45a37253aa0b1b4ec73d783b41f02e0d020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8096b77dccb797581848322a63cbe45a37253aa0b1b4ec73d783b41f02e0d020", kill_on_drop: false }`
[INFO] [stdout] 8096b77dccb797581848322a63cbe45a37253aa0b1b4ec73d783b41f02e0d020