[INFO] fetching crate gron 0.4.0...
[INFO] testing gron-0.4.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate gron 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate gron 0.4.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gron 0.4.0
[INFO] finished tweaking crates.io crate gron 0.4.0
[INFO] tweaked toml for crates.io crate gron 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fce4ef04f002e3f207cc7361e311da55e318daff708e5818fa9d1be03d06200
[INFO] running `Command { std: "docker" "start" "-a" "5fce4ef04f002e3f207cc7361e311da55e318daff708e5818fa9d1be03d06200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fce4ef04f002e3f207cc7361e311da55e318daff708e5818fa9d1be03d06200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fce4ef04f002e3f207cc7361e311da55e318daff708e5818fa9d1be03d06200", kill_on_drop: false }`
[INFO] [stdout] 5fce4ef04f002e3f207cc7361e311da55e318daff708e5818fa9d1be03d06200
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8eceae9a294a44bb5bea3d3e7977a21d51626200ed7979092b3e233f1c066223
[INFO] running `Command { std: "docker" "start" "-a" "8eceae9a294a44bb5bea3d3e7977a21d51626200ed7979092b3e233f1c066223", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling gron v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Json::F64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:33:37
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Json::Boolean(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Json::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:68:29
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:72:29
[INFO] [stdout]    |
[INFO] [stdout] 72 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:111:29
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:115:29
[INFO] [stdout]     |
[INFO] [stdout] 115 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:26:41
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Value::Number(ref value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:30:35
[INFO] [stdout]    |
[INFO] [stdout] 30 |             Value::Bool(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Value::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:53:29
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:79:29
[INFO] [stdout]    |
[INFO] [stdout] 79 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.78s
[INFO] running `Command { std: "docker" "inspect" "8eceae9a294a44bb5bea3d3e7977a21d51626200ed7979092b3e233f1c066223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eceae9a294a44bb5bea3d3e7977a21d51626200ed7979092b3e233f1c066223", kill_on_drop: false }`
[INFO] [stdout] 8eceae9a294a44bb5bea3d3e7977a21d51626200ed7979092b3e233f1c066223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e021f4c723677f956ee81096560dcc90564af570d8e88b41e44962f9ed6850a5
[INFO] running `Command { std: "docker" "start" "-a" "e021f4c723677f956ee81096560dcc90564af570d8e88b41e44962f9ed6850a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Json::F64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:33:37
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Json::Boolean(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Json::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:68:29
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:72:29
[INFO] [stdout]    |
[INFO] [stdout] 72 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:111:29
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:115:29
[INFO] [stdout]     |
[INFO] [stdout] 115 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:26:41
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Value::Number(ref value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:30:35
[INFO] [stdout]    |
[INFO] [stdout] 30 |             Value::Bool(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Value::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gron v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:53:29
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:79:29
[INFO] [stdout]    |
[INFO] [stdout] 79 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Json::F64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:33:37
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Json::Boolean(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:39:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Json::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:68:29
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:72:29
[INFO] [stdout]    |
[INFO] [stdout] 72 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_rustc_serialize.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:111:29
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:115:29
[INFO] [stdout]     |
[INFO] [stdout] 115 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:123:29
[INFO] [stdout]     |
[INFO] [stdout] 123 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_rustc_serialize.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:26:41
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Value::Number(ref value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:30:35
[INFO] [stdout]    |
[INFO] [stdout] 30 |             Value::Bool(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:39:28
[INFO] [stdout]    |
[INFO] [stdout] 39 |             Value::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:53:29
[INFO] [stdout]    |
[INFO] [stdout] 53 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:65:29
[INFO] [stdout]    |
[INFO] [stdout] 65 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:71:29
[INFO] [stdout]    |
[INFO] [stdout] 71 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:79:29
[INFO] [stdout]    |
[INFO] [stdout] 79 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/for_serde.rs:96:29
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:100:29
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/for_serde.rs:118:29
[INFO] [stdout]     |
[INFO] [stdout] 118 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/gron-c7dbae546d2123f6)
[INFO] running `Command { std: "docker" "inspect" "e021f4c723677f956ee81096560dcc90564af570d8e88b41e44962f9ed6850a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e021f4c723677f956ee81096560dcc90564af570d8e88b41e44962f9ed6850a5", kill_on_drop: false }`
[INFO] [stdout] e021f4c723677f956ee81096560dcc90564af570d8e88b41e44962f9ed6850a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6148744c7a8678e45b3fc82a3c5e81535adba435784749de192ec2e9a9d96209
[INFO] running `Command { std: "docker" "start" "-a" "6148744c7a8678e45b3fc82a3c5e81535adba435784749de192ec2e9a9d96209", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] 
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stdout] running 5 tests
[INFO] [stderr]    |
[INFO] [stdout] test test::test_obj_in_list ... ok
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stdout] test test::test_simple ... ok
[INFO] [stderr]    |                                 ^^^
[INFO] [stdout] test test::test_list_in_obj ... ok
[INFO] [stderr]    |
[INFO] [stdout] test test::test_vec ... ok
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] test test::test_map ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   --> src/for_rustc_serialize.rs:28:33
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:29:33
[INFO] [stderr]    |
[INFO] [stderr] 29 |             Json::F64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:31:17
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:33:37
[INFO] [stderr]    |
[INFO] [stderr] 33 |             Json::Boolean(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:42:27
[INFO] [stderr]    |
[INFO] [stderr] 42 |             Json::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:56:29
[INFO] [stderr]    |
[INFO] [stderr] 56 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:60:29
[INFO] [stderr]    |
[INFO] [stderr] 60 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:64:29
[INFO] [stderr]    |
[INFO] [stderr] 64 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:72:29
[INFO] [stderr]    |
[INFO] [stderr] 72 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:76:29
[INFO] [stderr]    |
[INFO] [stderr] 76 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:82:29
[INFO] [stderr]    |
[INFO] [stderr] 82 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:103:29
[INFO] [stderr]     |
[INFO] [stderr] 103 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:107:29
[INFO] [stderr]     |
[INFO] [stderr] 107 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:111:29
[INFO] [stderr]     |
[INFO] [stderr] 111 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:115:29
[INFO] [stderr]     |
[INFO] [stderr] 115 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:119:29
[INFO] [stderr]     |
[INFO] [stderr] 119 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:123:29
[INFO] [stderr]     |
[INFO] [stderr] 123 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:129:29
[INFO] [stderr]     |
[INFO] [stderr] 129 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_rustc_serialize.rs:137:29
[INFO] [stderr]     |
[INFO] [stderr] 137 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:26:41
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Value::Number(ref value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:28:17
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 try!(writeln!(out, "{} = {:?}", namebuf, value));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:30:35
[INFO] [stderr]    |
[INFO] [stderr] 30 |             Value::Bool(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 |             Value::Null => try!(writeln!(out, "{} = null", namebuf)),
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:53:29
[INFO] [stderr]    |
[INFO] [stderr] 53 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:57:29
[INFO] [stderr]    |
[INFO] [stderr] 57 | ...                   try!(writeln!(out, "{}.{} = {:?}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:61:29
[INFO] [stderr]    |
[INFO] [stderr] 61 | ...                   try!(writeln!(out, "{}.{} = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:65:29
[INFO] [stderr]    |
[INFO] [stderr] 65 | ...                   try!(writeln!(out, "{}.{} = null",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:71:29
[INFO] [stderr]    |
[INFO] [stderr] 71 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:79:29
[INFO] [stderr]    |
[INFO] [stderr] 79 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:92:29
[INFO] [stderr]    |
[INFO] [stderr] 92 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/for_serde.rs:96:29
[INFO] [stderr]    |
[INFO] [stderr] 96 | ...                   try!(writeln!(out, "{}[{}] = {:?}",
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_serde.rs:100:29
[INFO] [stderr]     |
[INFO] [stderr] 100 | ...                   try!(writeln!(out, "{}[{}] = {}",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_serde.rs:104:29
[INFO] [stderr]     |
[INFO] [stderr] 104 | ...                   try!(writeln!(out, "{}[{}] = null",
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_serde.rs:110:29
[INFO] [stderr]     |
[INFO] [stderr] 110 | ...                   try!(writeln!(out, "{} = []", namebuf));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/for_serde.rs:118:29
[INFO] [stderr]     |
[INFO] [stderr] 118 | ...                   try!(writeln!(out, "{} = {{}}", namebuf));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `gron` (lib) generated 42 warnings
[INFO] [stderr] warning: `gron` (lib test) generated 42 warnings (42 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.52s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/gron-c7dbae546d2123f6)
[INFO] [stderr]    Doc-tests gron
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - json_to_gron (line 37) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6148744c7a8678e45b3fc82a3c5e81535adba435784749de192ec2e9a9d96209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6148744c7a8678e45b3fc82a3c5e81535adba435784749de192ec2e9a9d96209", kill_on_drop: false }`
[INFO] [stdout] 6148744c7a8678e45b3fc82a3c5e81535adba435784749de192ec2e9a9d96209