[INFO] fetching crate optra 0.2.1...
[INFO] testing optra-0.2.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate optra 0.2.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate optra 0.2.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optra 0.2.1
[INFO] finished tweaking crates.io crate optra 0.2.1
[INFO] tweaked toml for crates.io crate optra 0.2.1 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6713877c7bba2b554a24afbf451b5ac52a2b38a5577bd9b2037b9c7a3a3b5b08
[INFO] running `Command { std: "docker" "start" "-a" "6713877c7bba2b554a24afbf451b5ac52a2b38a5577bd9b2037b9c7a3a3b5b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6713877c7bba2b554a24afbf451b5ac52a2b38a5577bd9b2037b9c7a3a3b5b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6713877c7bba2b554a24afbf451b5ac52a2b38a5577bd9b2037b9c7a3a3b5b08", kill_on_drop: false }`
[INFO] [stdout] 6713877c7bba2b554a24afbf451b5ac52a2b38a5577bd9b2037b9c7a3a3b5b08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84bb9c5dd74a3aa1fda7ccc19f062870fab579c5117e9094df8ac65b6c5cf198
[INFO] running `Command { std: "docker" "start" "-a" "84bb9c5dd74a3aa1fda7ccc19f062870fab579c5117e9094df8ac65b6c5cf198", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rdiff v0.1.2
[INFO] [stderr]    Compiling optra v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |         try!(writer.write(&int_buf));
[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/operations.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(writer.write(&long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         try!(writer.write(&int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         try!(writer.write(&self.value));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             try!(writer.write(&int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(reader.read_exact(&mut long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         try!(reader.read_exact(&mut value));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |         try!(writer.write(&int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |         try!(writer.write(&long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |         try!(writer.write(&long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |         try!(reader.read_exact(&mut long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/operations.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |         try!(reader.read_exact(&mut long_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:116:40
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let local_concurrent_inserts = try!(self.get_concurrent_inserts(&remote_sequence, lookup, stamper));
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:136:46
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let transformed_concurrent_inserts = try!(self.get_concurrent_inserts(&remote_sequence, lookup, stamper));
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:184:34
[INFO] [stdout]     |
[INFO] [stdout] 184 |             let reference_time = try!(stamper.get_local_timestamp_for(remote_site_id, remote_timestamp)
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |         try!(writer.write(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         try!(writer.write(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |             try!(insert.compress_to(writer, true));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |             try!(delete.compress_to(writer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:250:55
[INFO] [stdout]     |
[INFO] [stdout] 250 |                     tail_timestamp = Some((timestamp, try!(lookup.get(&timestamp).ok_or(OTError::new(Kind::NoSuchState)))))
[INFO] [stdout]     |                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:253:51
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 tail_timestamp = Some((timestamp, try!(lookup.get(&timestamp).ok_or(OTError::new(Kind::NoSuchState)))))
[INFO] [stdout]     |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:261:55
[INFO] [stdout]     |
[INFO] [stdout] 261 |                     tail_timestamp = Some((timestamp, try!(lookup.get(&timestamp).ok_or(OTError::new(Kind::NoSuchState)))))
[INFO] [stdout]     |                                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:264:51
[INFO] [stdout]     |
[INFO] [stdout] 264 |                 tail_timestamp = Some((timestamp, try!(lookup.get(&timestamp).ok_or(OTError::new(Kind::NoSuchState)))))
[INFO] [stdout]     |                                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:270:34
[INFO] [stdout]     |
[INFO] [stdout] 270 |             let reference_time = try!(stamper.get_local_timestamp_for(remote_site_id, remote_timestamp)
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:480:9
[INFO] [stdout]     |
[INFO] [stdout] 480 |         try!(writeln!(f, "Site: {}", self.site_id));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:481:9
[INFO] [stdout]     |
[INFO] [stdout] 481 |         try!(writeln!(f, "Inserts: {:?}", self.inserts));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:568:9
[INFO] [stdout]     |
[INFO] [stdout] 568 |         try!(writer.write(&int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:571:13
[INFO] [stdout]     |
[INFO] [stdout] 571 |             try!(writer.write(&int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:573:13
[INFO] [stdout]     |
[INFO] [stdout] 573 |             try!(writer.write(&int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:575:13
[INFO] [stdout]     |
[INFO] [stdout] 575 |             try!(writer.write(&int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:584:9
[INFO] [stdout]     |
[INFO] [stdout] 584 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:590:13
[INFO] [stdout]     |
[INFO] [stdout] 590 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:592:13
[INFO] [stdout]     |
[INFO] [stdout] 592 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:594:13
[INFO] [stdout]     |
[INFO] [stdout] 594 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:639:9
[INFO] [stdout]     |
[INFO] [stdout] 639 |         try!(file.seek(SeekFrom::Start(0)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:644:9
[INFO] [stdout]     |
[INFO] [stdout] 644 |         try!(file.read_to_end(&mut file_bytes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:645:9
[INFO] [stdout]     |
[INFO] [stdout] 645 |         try!(file.seek(SeekFrom::Start(0)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:646:9
[INFO] [stdout]     |
[INFO] [stdout] 646 |         try!(file.set_len(0));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:682:29
[INFO] [stdout]     |
[INFO] [stdout] 682 | ...                   try!(file.write(&[*next]));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:713:9
[INFO] [stdout]     |
[INFO] [stdout] 713 |         try!(writer.write(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:718:9
[INFO] [stdout]     |
[INFO] [stdout] 718 |         try!(writer.write(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:703:13
[INFO] [stdout]     |
[INFO] [stdout] 703 |             try!(writer.write(&[1]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:705:13
[INFO] [stdout]     |
[INFO] [stdout] 705 |             try!(writer.write(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:707:13
[INFO] [stdout]     |
[INFO] [stdout] 707 |             try!(writer.write(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:709:13
[INFO] [stdout]     |
[INFO] [stdout] 709 |             try!(writer.write(&[0]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:715:13
[INFO] [stdout]     |
[INFO] [stdout] 715 |             try!(insert.compress_to(writer, false));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:720:13
[INFO] [stdout]     |
[INFO] [stdout] 720 |             try!(delete.compress_to(writer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:731:9
[INFO] [stdout]     |
[INFO] [stdout] 731 |         try!(reader.read_exact(&mut bool_buffer));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:746:9
[INFO] [stdout]     |
[INFO] [stdout] 746 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:755:9
[INFO] [stdout]     |
[INFO] [stdout] 755 |         try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:734:13
[INFO] [stdout]     |
[INFO] [stdout] 734 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:736:13
[INFO] [stdout]     |
[INFO] [stdout] 736 |             try!(reader.read_exact(&mut int_buf));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:751:31
[INFO] [stdout]     |
[INFO] [stdout] 751 |             inserts.push_back(try!(InsertOperation::expand_from(reader, timestamp_lookup)))
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/engine.rs:760:31
[INFO] [stdout]     |
[INFO] [stdout] 760 |             deletes.push_back(try!(DeleteOperation::expand_from(reader)));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(linked_list_extras)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `linked_list_extras`
[INFO] [stdout]   --> src/lib.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(linked_list_extras)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:334:39
[INFO] [stdout]     |
[INFO] [stdout] 334 |                         incoming_iter.insert_next(mem::replace(&mut saved_op, None).unwrap())
[INFO] [stdout]     |                                       ^^^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, O1>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:343:39
[INFO] [stdout]     |
[INFO] [stdout] 343 |                         incoming_iter.insert_next(mem::replace(&mut saved_op, Some(new_op)).unwrap())
[INFO] [stdout]     |                                       ^^^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, O1>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:421:39
[INFO] [stdout]     |
[INFO] [stdout] 421 |                         incoming_iter.insert_next(mem::replace(&mut saved_op, None).unwrap())
[INFO] [stdout]     |                                       ^^^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, DeleteOperation>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:430:39
[INFO] [stdout]     |
[INFO] [stdout] 430 |                         incoming_iter.insert_next(mem::replace(&mut saved_op, Some(new_op)).unwrap())
[INFO] [stdout]     |                                       ^^^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, DeleteOperation>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `peek_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:466:44
[INFO] [stdout]     |
[INFO] [stdout] 466 |             while something_less(seq1_iter.peek_next(), &elem2, offset) {
[INFO] [stdout]     |                                            ^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, O>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `&O: OperationInternal` is not satisfied
[INFO] [stdout]    --> src/engine.rs:466:19
[INFO] [stdout]     |
[INFO] [stdout] 466 |             while something_less(seq1_iter.peek_next(), &elem2, offset) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^ the trait `OperationInternal` is not implemented for `&O`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `something_less`
[INFO] [stdout]    --> src/engine.rs:445:30
[INFO] [stdout]     |
[INFO] [stdout] 445 |         fn something_less<O: OperationInternal>(mut a: Option<&mut O>, b: &O, offset: Offset) -> bool {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^ required by this bound in `something_less`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `insert_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:470:23
[INFO] [stdout]     |
[INFO] [stdout] 470 |             seq1_iter.insert_next(elem2.clone());
[INFO] [stdout]     |                       ^^^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, O>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `peek_next` found for struct `std::collections::linked_list::IterMut` in the current scope
[INFO] [stdout]    --> src/engine.rs:472:25
[INFO] [stdout]     |
[INFO] [stdout] 472 |         while seq1_iter.peek_next().is_some() {
[INFO] [stdout]     |                         ^^^^^^^^^ method not found in `std::collections::linked_list::IterMut<'_, O>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 60 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `optra` due to 11 previous errors; 60 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "84bb9c5dd74a3aa1fda7ccc19f062870fab579c5117e9094df8ac65b6c5cf198", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84bb9c5dd74a3aa1fda7ccc19f062870fab579c5117e9094df8ac65b6c5cf198", kill_on_drop: false }`
[INFO] [stdout] 84bb9c5dd74a3aa1fda7ccc19f062870fab579c5117e9094df8ac65b6c5cf198