[INFO] updating cached repository https://github.com/thara/rust-tcp-echo-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] daf10149772fc8bde32334ae2327ee6db20c7a86
[INFO] checking thara/rust-tcp-echo-server against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthara%2Frust-tcp-echo-server" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thara/rust-tcp-echo-server on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thara/rust-tcp-echo-server
[INFO] finished tweaking git repo https://github.com/thara/rust-tcp-echo-server
[INFO] tweaked toml for git repo https://github.com/thara/rust-tcp-echo-server written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/thara/rust-tcp-echo-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dacda695ea66ffd343c62cdc12d866fbd640eb3d317c3824d05a7fe0efe4da64
[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" "dacda695ea66ffd343c62cdc12d866fbd640eb3d317c3824d05a7fe0efe4da64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dacda695ea66ffd343c62cdc12d866fbd640eb3d317c3824d05a7fe0efe4da64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dacda695ea66ffd343c62cdc12d866fbd640eb3d317c3824d05a7fe0efe4da64", kill_on_drop: false }`
[INFO] [stdout] dacda695ea66ffd343c62cdc12d866fbd640eb3d317c3824d05a7fe0efe4da64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 584dd45ec2fd7758129d4102fd0da64b6ab8ece4cb6ae5667f0d8afe4a9aa82d
[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" "584dd45ec2fd7758129d4102fd0da64b6ab8ece4cb6ae5667f0d8afe4a9aa82d", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking tcp-echo-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let listener = try!(TcpListener::bind(addr));
[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/server.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut stream = try!(stream);
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |         println!("{:?} connected.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let n = try!(stream.read(&mut bf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |             println!("{:?} closed.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             try!(stream.write(&bf[0..n]));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut stream = try!(TcpStream::connect(addr));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let s = try!(stream.write(msg.as_bytes()));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 16 |     println!("Write {} bytes to {}", s, try!(stream.peer_addr()));
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let n = try!(stream.read(&mut bf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |         println!("{:?} closed.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:23:48
[INFO] [stdout]    |
[INFO] [stdout] 23 |         println!("Read {} bytes from {:?}", s, try!(stream.peer_addr()));
[INFO] [stdout]    |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let listener = try!(TcpListener::bind(addr));
[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/server.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut stream = try!(stream);
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |         println!("{:?} connected.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let n = try!(stream.read(&mut bf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |             println!("{:?} closed.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/server.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |             try!(stream.write(&bf[0..n]));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut stream = try!(TcpStream::connect(addr));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let s = try!(stream.write(msg.as_bytes()));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 16 |     println!("Write {} bytes to {}", s, try!(stream.peer_addr()));
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let n = try!(stream.read(&mut bf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:21:34
[INFO] [stdout]    |
[INFO] [stdout] 21 |         println!("{:?} closed.", try!(stream.peer_addr()));
[INFO] [stdout]    |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/client.rs:23:48
[INFO] [stdout]    |
[INFO] [stdout] 23 |         println!("Read {} bytes from {:?}", s, try!(stream.peer_addr()));
[INFO] [stdout]    |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "584dd45ec2fd7758129d4102fd0da64b6ab8ece4cb6ae5667f0d8afe4a9aa82d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584dd45ec2fd7758129d4102fd0da64b6ab8ece4cb6ae5667f0d8afe4a9aa82d", kill_on_drop: false }`
[INFO] [stdout] 584dd45ec2fd7758129d4102fd0da64b6ab8ece4cb6ae5667f0d8afe4a9aa82d