[INFO] updating cached repository voidxnull/mio-chat-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/voidxnull/mio-chat-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/voidxnull/mio-chat-example" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/voidxnull/mio-chat-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/voidxnull/mio-chat-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/voidxnull/mio-chat-example" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/voidxnull/mio-chat-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/voidxnull/mio-chat-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 638e0a6875ae0cc861b07e7403374189456ef905
[INFO] sha for GitHub repo voidxnull/mio-chat-example: 638e0a6875ae0cc861b07e7403374189456ef905
[INFO] validating manifest of voidxnull/mio-chat-example on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of voidxnull/mio-chat-example on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing voidxnull/mio-chat-example
[INFO] finished frobbing voidxnull/mio-chat-example
[INFO] frobbed toml for voidxnull/mio-chat-example written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/voidxnull/mio-chat-example/Cargo.toml
[INFO] started frobbing voidxnull/mio-chat-example
[INFO] finished frobbing voidxnull/mio-chat-example
[INFO] frobbed toml for voidxnull/mio-chat-example written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/voidxnull/mio-chat-example/Cargo.toml
[INFO] crate voidxnull/mio-chat-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking voidxnull/mio-chat-example against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/voidxnull/mio-chat-example:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 48d6bcb4d3b4975a1ca90763b7db0e133efaa8009b04aba67d6b37ea31db340b
[INFO] running `"docker" "start" "-a" "48d6bcb4d3b4975a1ca90763b7db0e133efaa8009b04aba67d6b37ea31db340b"`
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking mio-chat-example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Timer`, `self`
[INFO] [stderr]  --> src/tcp/server.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 | use mio_extras::timer::{self, Timer};
[INFO] [stderr]   |                         ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tcp/server.rs:64:20
[INFO] [stderr]    |
[INFO] [stderr] 64 |         Option<Box<Fn(String, &TcpConnection, &TcpSender, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, &TcpConnection, &TcpSender, &Slab<TcpConnection>)`
[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/tcp/server.rs:65:43
[INFO] [stderr]    |
[INFO] [stderr] 65 |     client_connected_callback: Option<Box<Fn(&TcpConnection, &TcpSender, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&TcpConnection, &TcpSender, &Slab<TcpConnection>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tcp/server.rs:66:46
[INFO] [stderr]    |
[INFO] [stderr] 66 |     client_disconnected_callback: Option<Box<Fn(Token, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Token, &Slab<TcpConnection>)`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Timer`, `self`
[INFO] [stderr]  --> src/tcp/server.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 | use mio_extras::timer::{self, Timer};
[INFO] [stderr]   |                         ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tcp/server.rs:64:20
[INFO] [stderr]    |
[INFO] [stderr] 64 |         Option<Box<Fn(String, &TcpConnection, &TcpSender, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, &TcpConnection, &TcpSender, &Slab<TcpConnection>)`
[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/tcp/server.rs:65:43
[INFO] [stderr]    |
[INFO] [stderr] 65 |     client_connected_callback: Option<Box<Fn(&TcpConnection, &TcpSender, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&TcpConnection, &TcpSender, &Slab<TcpConnection>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tcp/server.rs:66:46
[INFO] [stderr]    |
[INFO] [stderr] 66 |     client_disconnected_callback: Option<Box<Fn(Token, &Slab<TcpConnection>)>>,
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Token, &Slab<TcpConnection>)`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/main.rs:20:33
[INFO] [stderr]    |
[INFO] [stderr] 20 |     server.on_message_received(|msg, _, _, _| {
[INFO] [stderr]    |                                 ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/main.rs:20:33
[INFO] [stderr]    |
[INFO] [stderr] 20 |     server.on_message_received(|msg, _, _, _| {
[INFO] [stderr]    |                                 ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "48d6bcb4d3b4975a1ca90763b7db0e133efaa8009b04aba67d6b37ea31db340b"`
[INFO] running `"docker" "rm" "-f" "48d6bcb4d3b4975a1ca90763b7db0e133efaa8009b04aba67d6b37ea31db340b"`
[INFO] [stdout] 48d6bcb4d3b4975a1ca90763b7db0e133efaa8009b04aba67d6b37ea31db340b