[INFO] fetching crate cobalt 0.22.0...
[INFO] checking cobalt-0.22.0 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate cobalt 0.22.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cobalt 0.22.0 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cobalt 0.22.0
[INFO] finished tweaking crates.io crate cobalt 0.22.0
[INFO] tweaked toml for crates.io crate cobalt 0.22.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fdd54c1aed9dda22bb53226bd3a1323c28361743fdc9bd2de0f6da7fe750ffc
[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" "0fdd54c1aed9dda22bb53226bd3a1323c28361743fdc9bd2de0f6da7fe750ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fdd54c1aed9dda22bb53226bd3a1323c28361743fdc9bd2de0f6da7fe750ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fdd54c1aed9dda22bb53226bd3a1323c28361743fdc9bd2de0f6da7fe750ffc", kill_on_drop: false }`
[INFO] [stdout] 0fdd54c1aed9dda22bb53226bd3a1323c28361743fdc9bd2de0f6da7fe750ffc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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] a0acdb7cad71331f0b5e919fd3150380f12f95b041e86d502e4651409a9a36a8
[INFO] running `Command { std: "docker" "start" "-a" "a0acdb7cad71331f0b5e919fd3150380f12f95b041e86d502e4651409a9a36a8", kill_on_drop: false }`
[INFO] [stderr]     Checking cobalt v0.22.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/shared/udp_socket.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let socket = try!(net::UdpSocket::bind(address));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/shared/udp_socket.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(socket.set_nonblocking(true));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:198:26
[INFO] [stdout]     |
[INFO] [stdout] 198 |             let socket = try!(S::new(
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:203:29
[INFO] [stdout]     |
[INFO] [stdout] 203 |             let peer_addr = try!(addr.to_socket_addrs()).nth(0).unwrap();
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:204:30
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let local_addr = try!(socket.local_addr());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/server.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |             let local_addr = try!(addr.to_socket_addrs()).nth(0).unwrap();
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/server.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let socket = try!(S::new(
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/shared/binary_rate_limiter.rs:165:45
[INFO] [stdout]     |
[INFO] [stdout] 165 |         self.last_bad_time = Instant::now();;
[INFO] [stdout]     |                                             ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/shared/connection.rs:129:59
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stdout]     |                                                           ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[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/shared/connection.rs:129:72
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/shared/connection.rs:425:25
[INFO] [stdout]     |
[INFO] [stdout] 425 |                         (cmp::max(self.last_receive_time - ack.time, tick_delay) - tick_delay)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/packet_modifier.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl fmt::Debug for PacketModifier {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/rate_limiter.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl fmt::Debug for RateLimiter {
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/shared/udp_socket.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let socket = try!(net::UdpSocket::bind(address));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/shared/udp_socket.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         try!(socket.set_nonblocking(true));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:198:26
[INFO] [stdout]     |
[INFO] [stdout] 198 |             let socket = try!(S::new(
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:203:29
[INFO] [stdout]     |
[INFO] [stdout] 203 |             let peer_addr = try!(addr.to_socket_addrs()).nth(0).unwrap();
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/client.rs:204:30
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let local_addr = try!(socket.local_addr());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/server.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |             let local_addr = try!(addr.to_socket_addrs()).nth(0).unwrap();
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/server.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let socket = try!(S::new(
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/shared/binary_rate_limiter.rs:165:45
[INFO] [stdout]     |
[INFO] [stdout] 165 |         self.last_bad_time = Instant::now();;
[INFO] [stdout]     |                                             ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/shared/connection.rs:129:59
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stdout]     |                                                           ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[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/shared/connection.rs:129:72
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/shared/connection.rs:425:25
[INFO] [stdout]     |
[INFO] [stdout] 425 |                         (cmp::max(self.last_receive_time - ack.time, tick_delay) - tick_delay)
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/packet_modifier.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl fmt::Debug for PacketModifier {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/rate_limiter.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl fmt::Debug for RateLimiter {
[INFO] [stdout]    |                     ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> examples/client.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         client.send(true).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stdout]   --> examples/server.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         server.send(true).is_ok();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "a0acdb7cad71331f0b5e919fd3150380f12f95b041e86d502e4651409a9a36a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0acdb7cad71331f0b5e919fd3150380f12f95b041e86d502e4651409a9a36a8", kill_on_drop: false }`
[INFO] [stdout] a0acdb7cad71331f0b5e919fd3150380f12f95b041e86d502e4651409a9a36a8
