[INFO] updating cached repository https://github.com/samphippen/decachedmem
[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] 6a177dc1571d16cad5853440a83846edb9a3672e
[INFO] testing samphippen/decachedmem against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamphippen%2Fdecachedmem" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samphippen/decachedmem on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samphippen/decachedmem
[INFO] finished tweaking git repo https://github.com/samphippen/decachedmem
[INFO] tweaked toml for git repo https://github.com/samphippen/decachedmem written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/samphippen/decachedmem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b295dbb13c9d8923c1a33b35c7a67bcee931534c05517972806cfeeaec1d4c39
[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" "b295dbb13c9d8923c1a33b35c7a67bcee931534c05517972806cfeeaec1d4c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b295dbb13c9d8923c1a33b35c7a67bcee931534c05517972806cfeeaec1d4c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b295dbb13c9d8923c1a33b35c7a67bcee931534c05517972806cfeeaec1d4c39", kill_on_drop: false }`
[INFO] [stdout] b295dbb13c9d8923c1a33b35c7a67bcee931534c05517972806cfeeaec1d4c39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fca08f27f515e7a278dad23f07a07869d78dc90f20845f69877bcdd456c69bf4
[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" "fca08f27f515e7a278dad23f07a07869d78dc90f20845f69877bcdd456c69bf4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures v0.1.1
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling tokio-core v0.1.0 (https://github.com/tokio-rs/tokio-core/#418a9735)
[INFO] [stderr]    Compiling decachedmem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/crlf_delimited_stream.rs:26:19
[INFO] [stdout]    |
[INFO] [stdout] 26 |             match try!(self.stream.poll()) {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let string = try!(String::from_utf8(part.to_vec())
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let parsed = try!(string.parse().map_err(|e| MemcachedParseError::from_err(e)));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let flags = try!(parse_header_part(parts[2]));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:73:19
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let exptime = try!(parse_header_part(parts[3]));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:74:22
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let byte_count = try!(parse_header_part(&parts[4]));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/stream.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let poll = try!(self.stream.poll());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/stream.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     let frame = try!(self.parser.add_bytes(&x).map_err(|e| other_io_error(e)));
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/handler_stream.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let poll = try!(self.protocol_stream.poll());
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/unpack.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let poll = try!(self.stream.poll());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/memcached/parser.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Self::new(e.description().into())
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/memcached/stream.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     io::Error::new(io::ErrorKind::Other, error.description())
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.53s
[INFO] running `Command { std: "docker" "inspect" "fca08f27f515e7a278dad23f07a07869d78dc90f20845f69877bcdd456c69bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fca08f27f515e7a278dad23f07a07869d78dc90f20845f69877bcdd456c69bf4", kill_on_drop: false }`
[INFO] [stdout] fca08f27f515e7a278dad23f07a07869d78dc90f20845f69877bcdd456c69bf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84784cf46897085feea7c302476ef11beb80d8b2bbdd40d83af7a22a9af55d48
[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" "84784cf46897085feea7c302476ef11beb80d8b2bbdd40d83af7a22a9af55d48", kill_on_drop: false }`
[INFO] [stderr]    Compiling decachedmem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/crlf_delimited_stream.rs:26:19
[INFO] [stdout]    |
[INFO] [stdout] 26 |             match try!(self.stream.poll()) {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let string = try!(String::from_utf8(part.to_vec())
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let parsed = try!(string.parse().map_err(|e| MemcachedParseError::from_err(e)));
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let flags = try!(parse_header_part(parts[2]));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:73:19
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let exptime = try!(parse_header_part(parts[3]));
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/parser.rs:74:22
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let byte_count = try!(parse_header_part(&parts[4]));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/stream.rs:36:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let poll = try!(self.stream.poll());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/stream.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     let frame = try!(self.parser.add_bytes(&x).map_err(|e| other_io_error(e)));
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/memcached/handler_stream.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let poll = try!(self.protocol_stream.poll());
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/unpack.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let poll = try!(self.stream.poll());
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/memcached/parser.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |         Self::new(e.description().into())
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/memcached/stream.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 |     io::Error::new(io::ErrorKind::Other, error.description())
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84784cf46897085feea7c302476ef11beb80d8b2bbdd40d83af7a22a9af55d48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84784cf46897085feea7c302476ef11beb80d8b2bbdd40d83af7a22a9af55d48", kill_on_drop: false }`
[INFO] [stdout] 84784cf46897085feea7c302476ef11beb80d8b2bbdd40d83af7a22a9af55d48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c3306bb9fe39a09622137bf1bc269e51266eebef5dbcac18c79950f018d923dc
[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" "c3306bb9fe39a09622137bf1bc269e51266eebef5dbcac18c79950f018d923dc", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/crlf_delimited_stream.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |             match try!(self.stream.poll()) {
[INFO] [stderr]    |                   ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/main.rs:1:9
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/parser.rs:41:18
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let string = try!(String::from_utf8(part.to_vec())
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/parser.rs:43:18
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let parsed = try!(string.parse().map_err(|e| MemcachedParseError::from_err(e)));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/parser.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let flags = try!(parse_header_part(parts[2]));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/parser.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let exptime = try!(parse_header_part(parts[3]));
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/parser.rs:74:22
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let byte_count = try!(parse_header_part(&parts[4]));
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/stream.rs:36:24
[INFO] [stderr]    |
[INFO] [stderr] 36 |             let poll = try!(self.stream.poll());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/stream.rs:39:33
[INFO] [stderr]    |
[INFO] [stderr] 39 |                     let frame = try!(self.parser.add_bytes(&x).map_err(|e| other_io_error(e)));
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/memcached/handler_stream.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let poll = try!(self.protocol_stream.poll());
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/unpack.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |             let poll = try!(self.stream.poll());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/memcached/parser.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |         Self::new(e.description().into())
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/memcached/stream.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |     io::Error::new(io::ErrorKind::Other, error.description())
[INFO] [stderr]    |                                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/decachedmem-a4ad9dcfb4d5a299
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c3306bb9fe39a09622137bf1bc269e51266eebef5dbcac18c79950f018d923dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3306bb9fe39a09622137bf1bc269e51266eebef5dbcac18c79950f018d923dc", kill_on_drop: false }`
[INFO] [stdout] c3306bb9fe39a09622137bf1bc269e51266eebef5dbcac18c79950f018d923dc