[INFO] fetching crate cobalt 0.22.0...
[INFO] extracting crate cobalt 0.22.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/cobalt/0.22.0
[INFO] extracting crate cobalt 0.22.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/cobalt/0.22.0
[INFO] validating manifest of cobalt-0.22.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cobalt-0.22.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-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-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/cobalt/0.22.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building cobalt-0.22.0 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-6/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 7ff4345c3ed476e84bd2fa80aebe889c40807a415f4a62d291ebba032d81db2c
[INFO] running `"docker" "start" "-a" "7ff4345c3ed476e84bd2fa80aebe889c40807a415f4a62d291ebba032d81db2c"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `"docker" "inspect" "7ff4345c3ed476e84bd2fa80aebe889c40807a415f4a62d291ebba032d81db2c"`
[INFO] running `"docker" "rm" "-f" "7ff4345c3ed476e84bd2fa80aebe889c40807a415f4a62d291ebba032d81db2c"`
[INFO] [stdout] 7ff4345c3ed476e84bd2fa80aebe889c40807a415f4a62d291ebba032d81db2c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-6/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 58be3da01774702b81e1d19ab1521519871e7a87b81510df6f4cfa56cbdc9a73
[INFO] running `"docker" "start" "-a" "58be3da01774702b81e1d19ab1521519871e7a87b81510df6f4cfa56cbdc9a73"`
[INFO] [stderr]    Compiling cobalt v0.22.0 (/opt/crater/workdir)
[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] 
[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] 
[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]     Finished dev [unoptimized + debuginfo] target(s) in 8.83s
[INFO] running `"docker" "inspect" "58be3da01774702b81e1d19ab1521519871e7a87b81510df6f4cfa56cbdc9a73"`
[INFO] running `"docker" "rm" "-f" "58be3da01774702b81e1d19ab1521519871e7a87b81510df6f4cfa56cbdc9a73"`
[INFO] [stdout] 58be3da01774702b81e1d19ab1521519871e7a87b81510df6f4cfa56cbdc9a73