[INFO] fetching crate dbus-serialize 0.1.2...
[INFO] checking dbus-serialize-0.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate dbus-serialize 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate dbus-serialize 0.1.2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dbus-serialize 0.1.2
[INFO] finished tweaking crates.io crate dbus-serialize 0.1.2
[INFO] tweaked toml for crates.io crate dbus-serialize 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc72b373cfec791b0387eff97ff235821ad114f05f1508220be4d08134641015
[INFO] running `Command { std: "docker" "start" "-a" "bc72b373cfec791b0387eff97ff235821ad114f05f1508220be4d08134641015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc72b373cfec791b0387eff97ff235821ad114f05f1508220be4d08134641015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc72b373cfec791b0387eff97ff235821ad114f05f1508220be4d08134641015", kill_on_drop: false }`
[INFO] [stdout] bc72b373cfec791b0387eff97ff235821ad114f05f1508220be4d08134641015
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cad546c979684a56fc8c80af07b9b937f3cf74c5e21835e2fe0a3c6be32e71ec
[INFO] running `Command { std: "docker" "start" "-a" "cad546c979684a56fc8c80af07b9b937f3cf74c5e21835e2fe0a3c6be32e71ec", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking dbus-serialize v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/decoder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:49:10
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let x = try!(DBusDecoder::get_unsigned_int(basic_val));
[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/decoder.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let x = try!(DBusDecoder::get_signed_int(basic_val));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let x = try!(DBusDecoder::get_unsigned_int(basic_val));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:98:19
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let val = try!(self.read_usize());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u32::MAX as usize)) as u32)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u16::MAX as usize)) as u16)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u8::MAX as usize)) as u8)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:116:10
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let x = try!(DBusDecoder::get_signed_int(basic_val));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let val = try!(self.read_isize());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i32::MAX as isize, std::i32::MIN as isize)) as i32)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i16::MAX as isize, std::i16::MIN as isize)) as i16)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i8::MAX as isize, std::i8::MIN as isize)) as i8)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:150:19
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let val = try!(self.read_u8());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         try!(obj.encode(&mut encoder));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 194 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/decoder.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:49:10
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let x = try!(DBusDecoder::get_unsigned_int(basic_val));
[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/decoder.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let x = try!(DBusDecoder::get_signed_int(basic_val));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let x = try!(DBusDecoder::get_unsigned_int(basic_val));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:98:19
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let val = try!(self.read_usize());
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u32::MAX as usize)) as u32)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u16::MAX as usize)) as u16)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 |         Ok(try!(DBusDecoder::read_unsigned_int(&self.value, std::u8::MAX as usize)) as u8)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:116:10
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let x = try!(DBusDecoder::get_signed_int(basic_val));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let val = try!(self.read_isize());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:124:12
[INFO] [stdout]     |
[INFO] [stdout] 124 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i32::MAX as isize, std::i32::MIN as isize)) as i32)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i16::MAX as isize, std::i16::MIN as isize)) as i16)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |         Ok(try!(DBusDecoder::read_signed_int(&self.value, std::i8::MAX as isize, std::i8::MIN as isize)) as i8)
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:150:19
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let val = try!(self.read_u8());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Decoder` is imported redundantly
[INFO] [stdout]    --> src/decoder.rs:274:27
[INFO] [stdout]     |
[INFO] [stdout] 274 |     use rustc_serialize::{Decoder,Decodable};
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout] 275 |     use types::{BasicValue,Value,Path,Struct,Signature,Array};
[INFO] [stdout] 276 |     use decoder::*;
[INFO] [stdout]     |         ---------- the item `Decoder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Decodable` is imported redundantly
[INFO] [stdout]    --> src/decoder.rs:274:35
[INFO] [stdout]     |
[INFO] [stdout] 274 |     use rustc_serialize::{Decoder,Decodable};
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout] 275 |     use types::{BasicValue,Value,Path,Struct,Signature,Array};
[INFO] [stdout] 276 |     use decoder::*;
[INFO] [stdout]     |         ---------- the item `Decodable` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BasicValue` is imported redundantly
[INFO] [stdout]    --> src/decoder.rs:275:17
[INFO] [stdout]     |
[INFO] [stdout] 275 |     use types::{BasicValue,Value,Path,Struct,Signature,Array};
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 276 |     use decoder::*;
[INFO] [stdout]     |         ---------- the item `BasicValue` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/decoder.rs:275:28
[INFO] [stdout]     |
[INFO] [stdout] 275 |     use types::{BasicValue,Value,Path,Struct,Signature,Array};
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 276 |     use decoder::*;
[INFO] [stdout]     |         ---------- the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:326:27
[INFO] [stdout]     |
[INFO] [stdout] 326 |                 let foo = try!(s.read_struct_field("foo", 0, |s: &mut S| {
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:329:27
[INFO] [stdout]     |
[INFO] [stdout] 329 |                 let bar = try!(s.read_struct_field("bar", 1, |s: &mut S| {
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/decoder.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |                 let baz = try!(s.read_struct_field("baz", 2, |s: &mut S| {
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         try!(obj.encode(&mut encoder));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 174 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 194 |         try!(f(self));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Encoder` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:233:27
[INFO] [stdout]     |
[INFO] [stdout] 233 |     use rustc_serialize::{Encoder,Encodable};
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Encoder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Encodable` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:233:35
[INFO] [stdout]     |
[INFO] [stdout] 233 |     use rustc_serialize::{Encoder,Encodable};
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Encodable` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `HashMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:17
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Value` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BasicValue` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:23
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                       ^^^^^^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `BasicValue` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Struct` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:34
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Struct` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Signature` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:41
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                                         ^^^^^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Signature` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Dictionary` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:51
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                                                   ^^^^^^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Dictionary` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Array` is imported redundantly
[INFO] [stdout]    --> src/encoder.rs:235:62
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use types::{Value,BasicValue,Struct,Signature,Dictionary,Array};
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout] 236 |     use encoder::*;
[INFO] [stdout]     |         ---------- the item `Array` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:350:17
[INFO] [stdout]     |
[INFO] [stdout] 350 |                 try!(s.emit_struct_field("a", 0, |s| {
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 try!(s.emit_struct_field("b", 1, |s| {
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:379:17
[INFO] [stdout]     |
[INFO] [stdout] 379 |                 try!(s.emit_struct_field("x", 0, |s| {
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:382:17
[INFO] [stdout]     |
[INFO] [stdout] 382 |                 try!(s.emit_struct_field("y", 1, |s| {
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/encoder.rs:385:17
[INFO] [stdout]     |
[INFO] [stdout] 385 |                 try!(s.emit_struct_field("z", 2, |s| {
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 43 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "cad546c979684a56fc8c80af07b9b937f3cf74c5e21835e2fe0a3c6be32e71ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cad546c979684a56fc8c80af07b9b937f3cf74c5e21835e2fe0a3c6be32e71ec", kill_on_drop: false }`
[INFO] [stdout] cad546c979684a56fc8c80af07b9b937f3cf74c5e21835e2fe0a3c6be32e71ec
[INFO] checking dbus-serialize-0.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate dbus-serialize 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate dbus-serialize 0.1.2 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dbus-serialize 0.1.2
[INFO] finished tweaking crates.io crate dbus-serialize 0.1.2
[INFO] tweaked toml for crates.io crate dbus-serialize 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 918edf916ad2247e21124bb80d5c8b7b409720f63acc000cd2885ea9f0064ace
[INFO] running `Command { std: "docker" "start" "-a" "918edf916ad2247e21124bb80d5c8b7b409720f63acc000cd2885ea9f0064ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "918edf916ad2247e21124bb80d5c8b7b409720f63acc000cd2885ea9f0064ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "918edf916ad2247e21124bb80d5c8b7b409720f63acc000cd2885ea9f0064ace", kill_on_drop: false }`
[INFO] [stdout] 918edf916ad2247e21124bb80d5c8b7b409720f63acc000cd2885ea9f0064ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b26e7da5b763f4d11ec486056fa551a551caef7cd1bc1e93937296950d3becb
[INFO] running `Command { std: "docker" "start" "-a" "5b26e7da5b763f4d11ec486056fa551a551caef7cd1bc1e93937296950d3becb", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.25/src/json.rs:1387:20
[INFO] [stdout]      |
[INFO] [stdout] 1387 |             _ => { panic!(); }
[INFO] [stdout]      |                    ^^^^^^^^ cannot infer type
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5b26e7da5b763f4d11ec486056fa551a551caef7cd1bc1e93937296950d3becb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b26e7da5b763f4d11ec486056fa551a551caef7cd1bc1e93937296950d3becb", kill_on_drop: false }`
[INFO] [stdout] 5b26e7da5b763f4d11ec486056fa551a551caef7cd1bc1e93937296950d3becb