[INFO] crate gron 0.4.0 is already in cache
[INFO] testing gron-0.4.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate gron 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate gron 0.4.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "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] b7209e97a0c248354c2ea5d54d59651da1630e59a7553a00e3ea9c0f76327c42
[INFO] running `"docker" "start" "-a" "b7209e97a0c248354c2ea5d54d59651da1630e59a7553a00e3ea9c0f76327c42"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling gron v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[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/for_rustc_serialize.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "b7209e97a0c248354c2ea5d54d59651da1630e59a7553a00e3ea9c0f76327c42"`
[INFO] running `"docker" "rm" "-f" "b7209e97a0c248354c2ea5d54d59651da1630e59a7553a00e3ea9c0f76327c42"`
[INFO] [stdout] b7209e97a0c248354c2ea5d54d59651da1630e59a7553a00e3ea9c0f76327c42
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 06a92eeb0f9ad745f723cc597ecdbfcfcad48d8c55928525ed2a452f2f81d6c7
[INFO] running `"docker" "start" "-a" "06a92eeb0f9ad745f723cc597ecdbfcfcad48d8c55928525ed2a452f2f81d6c7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gron v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[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/for_rustc_serialize.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[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/for_rustc_serialize.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `"docker" "inspect" "06a92eeb0f9ad745f723cc597ecdbfcfcad48d8c55928525ed2a452f2f81d6c7"`
[INFO] running `"docker" "rm" "-f" "06a92eeb0f9ad745f723cc597ecdbfcfcad48d8c55928525ed2a452f2f81d6c7"`
[INFO] [stdout] 06a92eeb0f9ad745f723cc597ecdbfcfcad48d8c55928525ed2a452f2f81d6c7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 419f78f167ea5dce5417e3ccb7df5664decb2004d98d27d9d3503dbe6a42c0fc
[INFO] running `"docker" "start" "-a" "419f78f167ea5dce5417e3ccb7df5664decb2004d98d27d9d3503dbe6a42c0fc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[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/for_rustc_serialize.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/for_rustc_serialize.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 |             Json::I64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[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/for_rustc_serialize.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Json::U64(value) => try!(writeln!(out, "{} = {}", namebuf, value)),
[INFO] [stderr]    |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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 item '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: 42 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gron-3499f521beb3a2a7
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test::test_simple ... ok
[INFO] [stdout] test test::test_list_in_obj ... ok
[INFO] [stdout] test test::test_vec ... ok
[INFO] [stdout] test test::test_map ... ok
[INFO] [stdout] test test::test_obj_in_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "419f78f167ea5dce5417e3ccb7df5664decb2004d98d27d9d3503dbe6a42c0fc"`
[INFO] running `"docker" "rm" "-f" "419f78f167ea5dce5417e3ccb7df5664decb2004d98d27d9d3503dbe6a42c0fc"`
[INFO] [stdout] 419f78f167ea5dce5417e3ccb7df5664decb2004d98d27d9d3503dbe6a42c0fc