[INFO] crate cobalt 0.22.0 is already in cache
[INFO] extracting crate cobalt 0.22.0 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/cobalt/0.22.0
[INFO] extracting crate cobalt 0.22.0 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/cobalt/0.22.0
[INFO] validating manifest of cobalt-0.22.0 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cobalt-0.22.0 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cobalt-0.22.0
[INFO] finished frobbing cobalt-0.22.0
[INFO] frobbed toml for cobalt-0.22.0 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/cobalt/0.22.0/Cargo.toml
[INFO] started frobbing cobalt-0.22.0
[INFO] finished frobbing cobalt-0.22.0
[INFO] frobbed toml for cobalt-0.22.0 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/cobalt/0.22.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cobalt-0.22.0 against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-7/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/cobalt/0.22.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 00b57b9bc401b7270be51a3bd9b162e9556600fe03400a2f18ac86a90d67d94b
[INFO] running `"docker" "start" "-a" "00b57b9bc401b7270be51a3bd9b162e9556600fe03400a2f18ac86a90d67d94b"`
[INFO] [stderr]     Checking cobalt v0.22.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/shared/connection.rs:129:59
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stderr]     |                                                           ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/shared/connection.rs:129:72
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stderr]     |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/shared/connection.rs:425:25
[INFO] [stderr]     |
[INFO] [stderr] 425 |                         (cmp::max(self.last_receive_time - ack.time, tick_delay) - tick_delay)
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits/packet_modifier.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl fmt::Debug for PacketModifier {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits/rate_limiter.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 | impl fmt::Debug for RateLimiter {
[INFO] [stderr]    |                     ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/shared/connection.rs:129:59
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stderr]     |                                                           ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/shared/connection.rs:129:72
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type ConnectionMap = HashMap<ConnectionID, Connection<RateLimiter, PacketModifier>>;
[INFO] [stderr]     |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/shared/connection.rs:425:25
[INFO] [stderr]     |
[INFO] [stderr] 425 |                         (cmp::max(self.last_receive_time - ack.time, tick_delay) - tick_delay)
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits/packet_modifier.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl fmt::Debug for PacketModifier {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: use `dyn`: `dyn PacketModifier`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits/rate_limiter.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 | impl fmt::Debug for RateLimiter {
[INFO] [stderr]    |                     ^^^^^^^^^^^ help: use `dyn`: `dyn RateLimiter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> examples/server.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         server.send(true).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> examples/client.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         client.send(true).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is ok, consider `.unwrap()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `"docker" "inspect" "00b57b9bc401b7270be51a3bd9b162e9556600fe03400a2f18ac86a90d67d94b"`
[INFO] running `"docker" "rm" "-f" "00b57b9bc401b7270be51a3bd9b162e9556600fe03400a2f18ac86a90d67d94b"`
[INFO] [stdout] 00b57b9bc401b7270be51a3bd9b162e9556600fe03400a2f18ac86a90d67d94b