[INFO] cloning repository https://github.com/jagg/irc-envoy [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jagg/irc-envoy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjagg%2Firc-envoy", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjagg%2Firc-envoy'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1a3d1f332f98a166f4e6af1e050a7145755fbb4c [INFO] testing jagg/irc-envoy against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjagg%2Firc-envoy" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jagg/irc-envoy on toolchain b70888601af92f6cdc0364abab3446e418b91d36 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jagg/irc-envoy [INFO] finished tweaking git repo https://github.com/jagg/irc-envoy [INFO] tweaked toml for git repo https://github.com/jagg/irc-envoy written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/jagg/irc-envoy already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8f79c67e7a7041d2f94b76a2de0a720d66a5032b5a8ddcbd4d9c95c334b0ca80 [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" "8f79c67e7a7041d2f94b76a2de0a720d66a5032b5a8ddcbd4d9c95c334b0ca80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8f79c67e7a7041d2f94b76a2de0a720d66a5032b5a8ddcbd4d9c95c334b0ca80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f79c67e7a7041d2f94b76a2de0a720d66a5032b5a8ddcbd4d9c95c334b0ca80", kill_on_drop: false }` [INFO] [stdout] 8f79c67e7a7041d2f94b76a2de0a720d66a5032b5a8ddcbd4d9c95c334b0ca80 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d60152a6a2760645cbc14ca81ff8dc903f1b5b3af2cbc400c147b58b5b95c5a3 [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" "d60152a6a2760645cbc14ca81ff8dc903f1b5b3af2cbc400c147b58b5b95c5a3", kill_on_drop: false }` [INFO] [stderr] Compiling nom v1.2.4 [INFO] [stderr] Compiling irc-envoy v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | try!(service.login("irc-envoy")); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | try!(service.join("irc-test")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:24:22 [INFO] [stdout] | [INFO] [stdout] 24 | let stream = try!(net::TcpStream::connect((config.server.as_str(), config.port))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | try!(self.tcp_writer.write(format!("USER {} 0 * :IRC Envoy Client \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | try!(self.tcp_writer.write(format!("NICK {} \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | try!(self.tcp_writer.write(format!("JOIN #{} \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | try!(self.tcp_writer.write(format!("PRIVMSG #{} :Hi! \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.12s [INFO] running `Command { std: "docker" "inspect" "d60152a6a2760645cbc14ca81ff8dc903f1b5b3af2cbc400c147b58b5b95c5a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d60152a6a2760645cbc14ca81ff8dc903f1b5b3af2cbc400c147b58b5b95c5a3", kill_on_drop: false }` [INFO] [stdout] d60152a6a2760645cbc14ca81ff8dc903f1b5b3af2cbc400c147b58b5b95c5a3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--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] 20ca71ee08bac22f8ab32382ffd6b61e6daeed4fe19313f5a393193a8507d789 [INFO] running `Command { std: "docker" "start" "-a" "20ca71ee08bac22f8ab32382ffd6b61e6daeed4fe19313f5a393193a8507d789", kill_on_drop: false }` [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | try!(service.login("irc-envoy")); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | try!(service.join("irc-test")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling irc-envoy v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:24:22 [INFO] [stdout] | [INFO] [stdout] 24 | let stream = try!(net::TcpStream::connect((config.server.as_str(), config.port))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | try!(self.tcp_writer.write(format!("USER {} 0 * :IRC Envoy Client \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | try!(self.tcp_writer.write(format!("NICK {} \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | try!(self.tcp_writer.write(format!("JOIN #{} \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | try!(self.tcp_writer.write(format!("PRIVMSG #{} :Hi! \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | try!(service.login("irc-envoy")); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | try!(service.join("irc-test")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:24:22 [INFO] [stdout] | [INFO] [stdout] 24 | let stream = try!(net::TcpStream::connect((config.server.as_str(), config.port))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | try!(self.tcp_writer.write(format!("USER {} 0 * :IRC Envoy Client \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | try!(self.tcp_writer.write(format!("NICK {} \r\n", nick).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 55 | try!(self.tcp_writer.write(format!("JOIN #{} \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | try!(self.tcp_writer.write(format!("PRIVMSG #{} :Hi! \r\n", channel).as_bytes())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/irc.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | try!(self.tcp_writer.flush()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.72s [INFO] running `Command { std: "docker" "inspect" "20ca71ee08bac22f8ab32382ffd6b61e6daeed4fe19313f5a393193a8507d789", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "20ca71ee08bac22f8ab32382ffd6b61e6daeed4fe19313f5a393193a8507d789", kill_on_drop: false }` [INFO] [stdout] 20ca71ee08bac22f8ab32382ffd6b61e6daeed4fe19313f5a393193a8507d789 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0dbab7a6205281c6b3e8ed0fa21fa8fd28bb11c4c5a2759d2066567e984c3be7 [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" "0dbab7a6205281c6b3e8ed0fa21fa8fd28bb11c4c5a2759d2066567e984c3be7", kill_on_drop: false }` [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:40:9 [INFO] [stderr] | [INFO] [stderr] 40 | try!(service.login("irc-envoy")); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | try!(service.join("irc-test")); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:24:22 [INFO] [stderr] | [INFO] [stderr] 24 | let stream = try!(net::TcpStream::connect((config.server.as_str(), config.port))); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:48:9 [INFO] [stderr] | [INFO] [stderr] 48 | try!(self.tcp_writer.write(format!("USER {} 0 * :IRC Envoy Client \r\n", nick).as_bytes())); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:49:9 [INFO] [stderr] | [INFO] [stderr] 49 | try!(self.tcp_writer.write(format!("NICK {} \r\n", nick).as_bytes())); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:50:9 [INFO] [stderr] | [INFO] [stderr] 50 | try!(self.tcp_writer.flush()); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:55:9 [INFO] [stderr] | [INFO] [stderr] 55 | try!(self.tcp_writer.write(format!("JOIN #{} \r\n", channel).as_bytes())); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:56:9 [INFO] [stderr] | [INFO] [stderr] 56 | try!(self.tcp_writer.write(format!("PRIVMSG #{} :Hi! \r\n", channel).as_bytes())); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/irc.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | try!(self.tcp_writer.flush()); [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: `irc-envoy` (lib) generated 9 warnings [INFO] [stderr] warning: `irc-envoy` (lib test) generated 9 warnings (9 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/irc_envoy-b8a6d055fe7ce2b6) [INFO] [stdout] running 2 tests [INFO] [stdout] test parser::tests::test_priv_message ... ok [INFO] [stdout] test parser::tests::test_channel_message ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/irc_envoy-d13068d29cb12d38) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests irc-envoy [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "0dbab7a6205281c6b3e8ed0fa21fa8fd28bb11c4c5a2759d2066567e984c3be7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0dbab7a6205281c6b3e8ed0fa21fa8fd28bb11c4c5a2759d2066567e984c3be7", kill_on_drop: false }` [INFO] [stdout] 0dbab7a6205281c6b3e8ed0fa21fa8fd28bb11c4c5a2759d2066567e984c3be7