[INFO] crate beautician 0.1.1 is already in cache
[INFO] testing beautician-0.1.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate beautician 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate beautician 0.1.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate beautician 0.1.1
[INFO] finished tweaking crates.io crate beautician 0.1.1
[INFO] tweaked toml for crates.io crate beautician 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6200cd5181d138864b6c6621ca5f3e5a13646ca2346a700c4d76a191a9994e4f
[INFO] running `"docker" "start" "-a" "6200cd5181d138864b6c6621ca5f3e5a13646ca2346a700c4d76a191a9994e4f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling beautician v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(wr.write(BUF));
[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/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(wr.write(&BUF[..n]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(wr.write_all(&bytes[start..i]));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(wr.write_all(escaped));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         try!(wr.write_all(&bytes[start..]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:96:50
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Some(json::JsonEvent::NullValue) => {try!(write!(dest, "null")); Ok(())},
[INFO] [stderr]    |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:97:52
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Some(json::JsonEvent::I64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:98:52
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Some(json::JsonEvent::U64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:99:52
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(json::JsonEvent::F64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 if b { try!(write!(dest, "true")) }
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 else { try!(write!(dest, "false"))};
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(escape_str(dest, &temp));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |             try!(write!(dest, "[]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             try!(write!(dest, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:139:21
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     try!(write!(dest, ","));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 try!(write!(dest, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |                 try!(spaces(dest, curr_indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:21
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     try!(write!(dest, "]"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 try!(write!(dest, "{{}}"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |         try!(write!(dest, "{{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 try!(write!(dest, ","));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             try!(write!(dest, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             try!(spaces(dest, curr_indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(dest, "{:?}: ",key));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     try!(write!(dest, "}}"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn spaces(wr: &mut io::Write, n: u32) -> io::Result<()> {
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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/lib.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn escape_bytes(wr: &mut io::Write, bytes: &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn escape_str(wr: &mut io::Write, value: &str) -> io::Result<()> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:61
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:91:75
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn build_value<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, curr_indent: u32)
[INFO] [stderr]    |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:125:75
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn build_array<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:167:76
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn build_object<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:27
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:48
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self,Read,Write};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "6200cd5181d138864b6c6621ca5f3e5a13646ca2346a700c4d76a191a9994e4f"`
[INFO] running `"docker" "rm" "-f" "6200cd5181d138864b6c6621ca5f3e5a13646ca2346a700c4d76a191a9994e4f"`
[INFO] [stdout] 6200cd5181d138864b6c6621ca5f3e5a13646ca2346a700c4d76a191a9994e4f
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 21736aab09ca83bfc9952ac2675c7fa4006202efcc8cec0422f6daa3e116b87b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "21736aab09ca83bfc9952ac2675c7fa4006202efcc8cec0422f6daa3e116b87b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling beautician v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(wr.write(BUF));
[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/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(wr.write(&BUF[..n]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(wr.write_all(&bytes[start..i]));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(wr.write_all(escaped));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         try!(wr.write_all(&bytes[start..]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:96:50
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Some(json::JsonEvent::NullValue) => {try!(write!(dest, "null")); Ok(())},
[INFO] [stderr]    |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:97:52
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Some(json::JsonEvent::I64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:98:52
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Some(json::JsonEvent::U64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:99:52
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(json::JsonEvent::F64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 if b { try!(write!(dest, "true")) }
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 else { try!(write!(dest, "false"))};
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(escape_str(dest, &temp));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |             try!(write!(dest, "[]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             try!(write!(dest, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:139:21
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     try!(write!(dest, ","));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 try!(write!(dest, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |                 try!(spaces(dest, curr_indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:21
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     try!(write!(dest, "]"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 try!(write!(dest, "{{}}"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |         try!(write!(dest, "{{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 try!(write!(dest, ","));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             try!(write!(dest, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             try!(spaces(dest, curr_indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(dest, "{:?}: ",key));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     try!(write!(dest, "}}"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn spaces(wr: &mut io::Write, n: u32) -> io::Result<()> {
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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/lib.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn escape_bytes(wr: &mut io::Write, bytes: &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn escape_str(wr: &mut io::Write, value: &str) -> io::Result<()> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:61
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:91:75
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn build_value<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, curr_indent: u32)
[INFO] [stderr]    |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:125:75
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn build_array<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:167:76
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn build_object<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:27
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:48
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self,Read,Write};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(wr.write(BUF));
[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/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(wr.write(&BUF[..n]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(wr.write_all(&bytes[start..i]));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(wr.write_all(escaped));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         try!(wr.write_all(&bytes[start..]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:96:50
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Some(json::JsonEvent::NullValue) => {try!(write!(dest, "null")); Ok(())},
[INFO] [stderr]    |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:97:52
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Some(json::JsonEvent::I64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:98:52
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Some(json::JsonEvent::U64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:99:52
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(json::JsonEvent::F64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 if b { try!(write!(dest, "true")) }
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 else { try!(write!(dest, "false"))};
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(escape_str(dest, &temp));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |             try!(write!(dest, "[]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             try!(write!(dest, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:139:21
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     try!(write!(dest, ","));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 try!(write!(dest, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |                 try!(spaces(dest, curr_indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:21
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     try!(write!(dest, "]"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 try!(write!(dest, "{{}}"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |         try!(write!(dest, "{{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 try!(write!(dest, ","));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             try!(write!(dest, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             try!(spaces(dest, curr_indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(dest, "{:?}: ",key));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     try!(write!(dest, "}}"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn spaces(wr: &mut io::Write, n: u32) -> io::Result<()> {
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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/lib.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn escape_bytes(wr: &mut io::Write, bytes: &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn escape_str(wr: &mut io::Write, value: &str) -> io::Result<()> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:61
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:91:75
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn build_value<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, curr_indent: u32)
[INFO] [stderr]    |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:125:75
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn build_array<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:167:76
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn build_object<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:27
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:48
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self,Read,Write};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "21736aab09ca83bfc9952ac2675c7fa4006202efcc8cec0422f6daa3e116b87b"`
[INFO] running `"docker" "rm" "-f" "21736aab09ca83bfc9952ac2675c7fa4006202efcc8cec0422f6daa3e116b87b"`
[INFO] [stdout] 21736aab09ca83bfc9952ac2675c7fa4006202efcc8cec0422f6daa3e116b87b
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 0e10afe06fc91c01494ecdb3c03da2c4d55af6fc1a68d51ff956ab60c6de6d15
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "0e10afe06fc91c01494ecdb3c03da2c4d55af6fc1a68d51ff956ab60c6de6d15"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(wr.write(BUF));
[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/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(wr.write(&BUF[..n]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(wr.write_all(&bytes[start..i]));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(wr.write_all(escaped));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         try!(wr.write_all(&bytes[start..]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:96:50
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Some(json::JsonEvent::NullValue) => {try!(write!(dest, "null")); Ok(())},
[INFO] [stderr]    |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:97:52
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Some(json::JsonEvent::I64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:98:52
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Some(json::JsonEvent::U64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:99:52
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(json::JsonEvent::F64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 if b { try!(write!(dest, "true")) }
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 else { try!(write!(dest, "false"))};
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(escape_str(dest, &temp));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |             try!(write!(dest, "[]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             try!(write!(dest, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:139:21
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     try!(write!(dest, ","));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 try!(write!(dest, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |                 try!(spaces(dest, curr_indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:21
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     try!(write!(dest, "]"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 try!(write!(dest, "{{}}"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |         try!(write!(dest, "{{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 try!(write!(dest, ","));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             try!(write!(dest, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             try!(spaces(dest, curr_indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(dest, "{:?}: ",key));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     try!(write!(dest, "}}"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn spaces(wr: &mut io::Write, n: u32) -> io::Result<()> {
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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/lib.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn escape_bytes(wr: &mut io::Write, bytes: &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn escape_str(wr: &mut io::Write, value: &str) -> io::Result<()> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:61
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:91:75
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn build_value<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, curr_indent: u32)
[INFO] [stderr]    |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:125:75
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn build_array<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:167:76
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn build_object<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:27
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:48
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self,Read,Write};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(wr.write(BUF));
[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/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         try!(wr.write(&BUF[..n]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(wr.write_all(&bytes[start..i]));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         try!(wr.write_all(escaped));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         try!(wr.write_all(&bytes[start..]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     try!(wr.write_all(b"\""));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:96:50
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Some(json::JsonEvent::NullValue) => {try!(write!(dest, "null")); Ok(())},
[INFO] [stderr]    |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:97:52
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Some(json::JsonEvent::I64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:98:52
[INFO] [stderr]    |
[INFO] [stderr] 98 |             Some(json::JsonEvent::U64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:99:52
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Some(json::JsonEvent::F64Value(n)) => {try!(write!(dest, "{}", n)); Ok(())},
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 if b { try!(write!(dest, "true")) }
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:102:24
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 else { try!(write!(dest, "false"))};
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(escape_str(dest, &temp));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:133:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |             try!(write!(dest, "[]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             try!(write!(dest, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:139:21
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     try!(write!(dest, ","));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 try!(write!(dest, "\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:17
[INFO] [stderr]     |
[INFO] [stderr] 142 |                 try!(spaces(dest, curr_indent));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:21
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     try!(write!(dest, "]"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:175:17
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 try!(write!(dest, "{{}}"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |         try!(write!(dest, "{{"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 try!(write!(dest, ","));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             try!(write!(dest, "\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             try!(spaces(dest, curr_indent));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(dest, "{:?}: ",key));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                     try!(write!(dest, "\n"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                     try!(spaces(dest, curr_indent - 2));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:211:21
[INFO] [stderr]     |
[INFO] [stderr] 211 |                     try!(write!(dest, "}}"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn spaces(wr: &mut io::Write, n: u32) -> io::Result<()> {
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[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/lib.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn escape_bytes(wr: &mut io::Write, bytes: &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn escape_str(wr: &mut io::Write, value: &str) -> io::Result<()> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:40
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                        ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:71:61
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn stream(&mut self, src: &mut io::Read, dest: &mut io::Write) -> Result<(), json::BuilderError> {
[INFO] [stderr]    |                                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:91:75
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn build_value<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, curr_indent: u32)
[INFO] [stderr]    |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:125:75
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn build_array<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:167:76
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn build_object<T>(&mut self, parser: &mut json::Parser<T>, dest: &mut io::Write, old_indent: u32)
[INFO] [stderr]     |                                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:27
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                           ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:241:48
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub fn prettify(src: &mut io::Read, dest: &mut io::Write)
[INFO] [stderr]     |                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self,Read,Write};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/beautician-114ecb907171f4bc
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests beautician
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - prettify (line 228) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0e10afe06fc91c01494ecdb3c03da2c4d55af6fc1a68d51ff956ab60c6de6d15"`
[INFO] running `"docker" "rm" "-f" "0e10afe06fc91c01494ecdb3c03da2c4d55af6fc1a68d51ff956ab60c6de6d15"`
[INFO] [stdout] 0e10afe06fc91c01494ecdb3c03da2c4d55af6fc1a68d51ff956ab60c6de6d15