[INFO] crate rwutil 2.0.0 is already in cache
[INFO] testing rwutil-2.0.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate rwutil 2.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rwutil 2.0.0 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 crates.io crate rwutil 2.0.0
[INFO] finished tweaking crates.io crate rwutil 2.0.0
[INFO] tweaked toml for crates.io crate rwutil 2.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 494f7296f29a92ea605316821041b1da2d3e135bfb5f33f4dd16752b52f30125
[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" "494f7296f29a92ea605316821041b1da2d3e135bfb5f33f4dd16752b52f30125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "494f7296f29a92ea605316821041b1da2d3e135bfb5f33f4dd16752b52f30125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "494f7296f29a92ea605316821041b1da2d3e135bfb5f33f4dd16752b52f30125", kill_on_drop: false }`
[INFO] [stdout] 494f7296f29a92ea605316821041b1da2d3e135bfb5f33f4dd16752b52f30125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 812f29c892a8be802481ff3cba675b9db76bd56679e13abf8ca9637ee247555e
[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" "812f29c892a8be802481ff3cba675b9db76bd56679e13abf8ca9637ee247555e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rwutil v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(try!(result))
[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/bytes0.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         try!(self.write_all(data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_all(&[0; 1]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.write_u8(data.len() as u8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_u16::<T>(data.len() as u16));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         try!(self.write_u32::<T>(data.len() as u32));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(self.write_u64::<T>(data.len() as u64));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let len = try!(self.read_u8());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:80:19
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let len = try!(self.read_u16::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:94:19
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let len = try!(self.read_u32::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:104:19
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let len = try!(self.read_u64::<T>());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "812f29c892a8be802481ff3cba675b9db76bd56679e13abf8ca9637ee247555e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "812f29c892a8be802481ff3cba675b9db76bd56679e13abf8ca9637ee247555e", kill_on_drop: false }`
[INFO] [stdout] 812f29c892a8be802481ff3cba675b9db76bd56679e13abf8ca9637ee247555e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1e4ff8e1f062d848d045721fd9dc32709a9e315003fb855f53d874b38375417a
[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" "1e4ff8e1f062d848d045721fd9dc32709a9e315003fb855f53d874b38375417a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rwutil v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(try!(result))
[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/bytes0.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         try!(self.write_all(data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_all(&[0; 1]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.write_u8(data.len() as u8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_u16::<T>(data.len() as u16));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         try!(self.write_u32::<T>(data.len() as u32));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(self.write_u64::<T>(data.len() as u64));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let len = try!(self.read_u8());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:80:19
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let len = try!(self.read_u16::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:94:19
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let len = try!(self.read_u32::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:104:19
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let len = try!(self.read_u64::<T>());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(try!(result))
[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/bytes0.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         try!(self.write_all(data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/bytes0.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_all(&[0; 1]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.write_u8(data.len() as u8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(self.write_u16::<T>(data.len() as u16));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         try!(self.write_u32::<T>(data.len() as u32));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(self.write_u64::<T>(data.len() as u64));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(self.write_all(&data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let len = try!(self.read_u8());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:80:19
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let len = try!(self.read_u16::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:94:19
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let len = try!(self.read_u32::<T>());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/length_prefixed.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:104:19
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let len = try!(self.read_u64::<T>());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/length_prefixed.rs:108:9
[INFO] [stdout]     |
[INFO] [stdout] 108 |         try!(self.read_exact(&mut buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "1e4ff8e1f062d848d045721fd9dc32709a9e315003fb855f53d874b38375417a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4ff8e1f062d848d045721fd9dc32709a9e315003fb855f53d874b38375417a", kill_on_drop: false }`
[INFO] [stdout] 1e4ff8e1f062d848d045721fd9dc32709a9e315003fb855f53d874b38375417a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] f28a8590c86a932577d2075dcfd5888fced039fc402b5a3f2f1fe83c19e5e68d
[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" "f28a8590c86a932577d2075dcfd5888fced039fc402b5a3f2f1fe83c19e5e68d", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Ok(try!(result))
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         try!(self.write_all(data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(self.write_all(&[0; 1]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.write_u8(data.len() as u8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(self.write_u16::<T>(data.len() as u16));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         try!(self.write_u32::<T>(data.len() as u32));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(self.write_u64::<T>(data.len() as u64));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:68:19
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let len = try!(self.read_u8());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:80:19
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let len = try!(self.read_u16::<T>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:94:19
[INFO] [stderr]    |
[INFO] [stderr] 94 |         let len = try!(self.read_u32::<T>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/length_prefixed.rs:104:19
[INFO] [stderr]     |
[INFO] [stderr] 104 |         let len = try!(self.read_u64::<T>());
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/length_prefixed.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Ok(try!(result))
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |         try!(self.write_all(data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bytes0.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(self.write_all(&[0; 1]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.write_u8(data.len() as u8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(self.write_u16::<T>(data.len() as u16));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         try!(self.write_u32::<T>(data.len() as u32));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(self.write_u64::<T>(data.len() as u64));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         try!(self.write_all(&data));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:68:19
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let len = try!(self.read_u8());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:80:19
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let len = try!(self.read_u16::<T>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:94:19
[INFO] [stderr]    |
[INFO] [stderr] 94 |         let len = try!(self.read_u32::<T>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/length_prefixed.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/length_prefixed.rs:104:19
[INFO] [stderr]     |
[INFO] [stderr] 104 |         let len = try!(self.read_u64::<T>());
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/length_prefixed.rs:108:9
[INFO] [stderr]     |
[INFO] [stderr] 108 |         try!(self.read_exact(&mut buf));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rwutil-74819d0f83579a6c
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test length_prefixed::test::test_u32_prefixed_write_le ... ok
[INFO] [stdout] test length_prefixed::test::test_u32_prefixed_write_be ... ok
[INFO] [stdout] test length_prefixed::test::test_u64_prefixed_write_le ... ok
[INFO] [stdout] test length_prefixed::test::test_u16_prefixed_write_be ... ok
[INFO] [stdout] test length_prefixed::test::test_u8_prefixed_write ... ok
[INFO] [stdout] test length_prefixed::test::test_u16_prefixed_write_le ... ok
[INFO] [stdout] test bytes0::test::test_bytes0 ... ok
[INFO] [stdout] test length_prefixed::test::test_u64_prefixed_write_be ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rwutil
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/bytes0.rs - bytes0 (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f28a8590c86a932577d2075dcfd5888fced039fc402b5a3f2f1fe83c19e5e68d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28a8590c86a932577d2075dcfd5888fced039fc402b5a3f2f1fe83c19e5e68d", kill_on_drop: false }`
[INFO] [stdout] f28a8590c86a932577d2075dcfd5888fced039fc402b5a3f2f1fe83c19e5e68d