[INFO] crate bitcoin-chain 0.3.1 is already in cache
[INFO] checking bitcoin-chain-0.3.1 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate bitcoin-chain 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bitcoin-chain 0.3.1 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bitcoin-chain 0.3.1
[INFO] finished tweaking crates.io crate bitcoin-chain 0.3.1
[INFO] tweaked toml for crates.io crate bitcoin-chain 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c15a91e009ee5804a0e2afa095bc0c969cbb3495a392c33b50017745675e4848
[INFO] running `"docker" "start" "-a" "c15a91e009ee5804a0e2afa095bc0c969cbb3495a392c33b50017745675e4848"`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking bech32 v0.5.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking bitcoin-bech32 v0.8.1
[INFO] [stderr]    Compiling secp256k1 v0.11.6
[INFO] [stderr]     Checking bitcoin v0.15.1
[INFO] [stderr]     Checking bitcoin-chain v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         try!(self.block.consensus_encode(s));
[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/blockchain.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |         try!(self.total_work.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(self.required_difficulty.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         try!(self.height.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         try!(self.has_txdata.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:135:20
[INFO] [stderr]     |
[INFO] [stderr] 135 |             block: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:136:25
[INFO] [stderr]     |
[INFO] [stderr] 136 |             total_work: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:137:34
[INFO] [stderr]     |
[INFO] [stderr] 137 |             required_difficulty: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |             height: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:139:25
[INFO] [stderr]     |
[INFO] [stderr] 139 |             has_txdata: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         try!(self.network.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         try!(self.tree.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         try!(self.best_hash.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         try!(self.genesis_hash.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:176:32
[INFO] [stderr]     |
[INFO] [stderr] 176 |         let network: Network = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:177:35
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut tree: BlockTree = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:178:38
[INFO] [stderr]     |
[INFO] [stderr] 178 |         let best_hash: Sha256dHash = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:179:41
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let genesis_hash: Sha256dHash = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:540:9
[INFO] [stderr]     |
[INFO] [stderr] 540 |         try!(new_block.block.header.spv_validate(&new_block.required_difficulty));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:374:17
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 try!(write!(f, "{:}", if tree.skip_prefix.bit(i) { 1 } else { 0 }));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:376:13
[INFO] [stderr]     |
[INFO] [stderr] 376 |             try!(writeln!(f, ": {:?}", tree.data));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                     try!(write!(f, "-"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:382:17
[INFO] [stderr]     |
[INFO] [stderr] 382 |                 try!(write!(f, "0"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:383:17
[INFO] [stderr]     |
[INFO] [stderr] 383 |                 try!(recurse(&**t, f, depth + tree.skip_len as usize + 1));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:388:21
[INFO] [stderr]     |
[INFO] [stderr] 388 |                     try!(write!(f, "_"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:390:17
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 try!(write!(f, "1"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:391:17
[INFO] [stderr]     |
[INFO] [stderr] 391 |                 try!(recurse(&**t, f, depth + tree.skip_len as usize + 1));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:406:9
[INFO] [stderr]     |
[INFO] [stderr] 406 |         try!(self.skip_prefix.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:407:9
[INFO] [stderr]     |
[INFO] [stderr] 407 |         try!(self.skip_len.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:408:9
[INFO] [stderr]     |
[INFO] [stderr] 408 |         try!(self.data.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:409:9
[INFO] [stderr]     |
[INFO] [stderr] 409 |         try!(self.child_l.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:410:9
[INFO] [stderr]     |
[INFO] [stderr] 410 |         try!(self.child_r.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:422:26
[INFO] [stderr]     |
[INFO] [stderr] 422 |             skip_prefix: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:423:23
[INFO] [stderr]     |
[INFO] [stderr] 423 |             skip_len: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:424:19
[INFO] [stderr]     |
[INFO] [stderr] 424 |             data: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:425:22
[INFO] [stderr]     |
[INFO] [stderr] 425 |             child_l: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:426:22
[INFO] [stderr]     |
[INFO] [stderr] 426 |             child_r: try!(Decodable::consensus_decode(d))
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/blockchain.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         try!(self.block.consensus_encode(s));
[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/blockchain.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |         try!(self.total_work.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(self.required_difficulty.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         try!(self.height.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         try!(self.has_txdata.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:135:20
[INFO] [stderr]     |
[INFO] [stderr] 135 |             block: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:136:25
[INFO] [stderr]     |
[INFO] [stderr] 136 |             total_work: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:137:34
[INFO] [stderr]     |
[INFO] [stderr] 137 |             required_difficulty: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |             height: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:139:25
[INFO] [stderr]     |
[INFO] [stderr] 139 |             has_txdata: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         try!(self.network.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         try!(self.tree.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |         try!(self.best_hash.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         try!(self.genesis_hash.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:176:32
[INFO] [stderr]     |
[INFO] [stderr] 176 |         let network: Network = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:177:35
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut tree: BlockTree = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:178:38
[INFO] [stderr]     |
[INFO] [stderr] 178 |         let best_hash: Sha256dHash = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:179:41
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let genesis_hash: Sha256dHash = try!(Decodable::consensus_decode(d));
[INFO] [stderr]     |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/blockchain.rs:540:9
[INFO] [stderr]     |
[INFO] [stderr] 540 |         try!(new_block.block.header.spv_validate(&new_block.required_difficulty));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:374:17
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 try!(write!(f, "{:}", if tree.skip_prefix.bit(i) { 1 } else { 0 }));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:376:13
[INFO] [stderr]     |
[INFO] [stderr] 376 |             try!(writeln!(f, ": {:?}", tree.data));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                     try!(write!(f, "-"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:382:17
[INFO] [stderr]     |
[INFO] [stderr] 382 |                 try!(write!(f, "0"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:383:17
[INFO] [stderr]     |
[INFO] [stderr] 383 |                 try!(recurse(&**t, f, depth + tree.skip_len as usize + 1));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:388:21
[INFO] [stderr]     |
[INFO] [stderr] 388 |                     try!(write!(f, "_"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:390:17
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 try!(write!(f, "1"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:391:17
[INFO] [stderr]     |
[INFO] [stderr] 391 |                 try!(recurse(&**t, f, depth + tree.skip_len as usize + 1));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:406:9
[INFO] [stderr]     |
[INFO] [stderr] 406 |         try!(self.skip_prefix.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:407:9
[INFO] [stderr]     |
[INFO] [stderr] 407 |         try!(self.skip_len.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:408:9
[INFO] [stderr]     |
[INFO] [stderr] 408 |         try!(self.data.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:409:9
[INFO] [stderr]     |
[INFO] [stderr] 409 |         try!(self.child_l.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:410:9
[INFO] [stderr]     |
[INFO] [stderr] 410 |         try!(self.child_r.consensus_encode(s));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:422:26
[INFO] [stderr]     |
[INFO] [stderr] 422 |             skip_prefix: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:423:23
[INFO] [stderr]     |
[INFO] [stderr] 423 |             skip_len: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:424:19
[INFO] [stderr]     |
[INFO] [stderr] 424 |             data: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:425:22
[INFO] [stderr]     |
[INFO] [stderr] 425 |             child_l: try!(Decodable::consensus_decode(d)),
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/patricia_tree.rs:426:22
[INFO] [stderr]     |
[INFO] [stderr] 426 |             child_r: try!(Decodable::consensus_decode(d))
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/blockchain.rs:73:19
[INFO] [stderr]    |
[INFO] [stderr] 73 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.05s
[INFO] running `"docker" "inspect" "c15a91e009ee5804a0e2afa095bc0c969cbb3495a392c33b50017745675e4848"`
[INFO] running `"docker" "rm" "-f" "c15a91e009ee5804a0e2afa095bc0c969cbb3495a392c33b50017745675e4848"`
[INFO] [stdout] c15a91e009ee5804a0e2afa095bc0c969cbb3495a392c33b50017745675e4848