[INFO] crate dynamo 0.1.0 is already in cache
[INFO] testing dynamo-0.1.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate dynamo 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dynamo 0.1.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dynamo 0.1.0
[INFO] finished tweaking crates.io crate dynamo 0.1.0
[INFO] tweaked toml for crates.io crate dynamo 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7a09e34402367cf955cfd076e755637f2f2bb48e655499b26064ff713c176f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e7a09e34402367cf955cfd076e755637f2f2bb48e655499b26064ff713c176f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7a09e34402367cf955cfd076e755637f2f2bb48e655499b26064ff713c176f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a09e34402367cf955cfd076e755637f2f2bb48e655499b26064ff713c176f3", kill_on_drop: false }`
[INFO] [stdout] e7a09e34402367cf955cfd076e755637f2f2bb48e655499b26064ff713c176f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aefbce37c0e4d816e5f0a1fd5e8b49fd3ae4f1079df593442229e352b3549a1c
[INFO] running `Command { std: "docker" "start" "-a" "aefbce37c0e4d816e5f0a1fd5e8b49fd3ae4f1079df593442229e352b3549a1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling range v0.3.1
[INFO] [stderr]    Compiling read_token v0.6.2
[INFO] [stderr]    Compiling piston_meta v0.25.1
[INFO] [stderr]    Compiling dynamo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let name = try!(name.ok_or(()));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let block = try!(block.ok_or(()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:93:27
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:132:27
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:184:27
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let result = try!(result.ok_or(()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:309:27
[INFO] [stdout]     |
[INFO] [stdout] 309 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:332:19
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let key = try!(key.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |         let value = try!(value.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:350:27
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:386:27
[INFO] [stdout]     |
[INFO] [stdout] 386 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:443:27
[INFO] [stdout]     |
[INFO] [stdout] 443 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:536:27
[INFO] [stdout]     |
[INFO] [stdout] 536 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:560:20
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let base = try!(base.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:561:19
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let exp = try!(exp.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:596:27
[INFO] [stdout]     |
[INFO] [stdout] 596 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:625:20
[INFO] [stdout]     |
[INFO] [stdout] 625 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:643:27
[INFO] [stdout]     |
[INFO] [stdout] 643 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:666:20
[INFO] [stdout]     |
[INFO] [stdout] 666 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:695:27
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:744:18
[INFO] [stdout]     |
[INFO] [stdout] 744 |         let op = try!(op.ok_or(()));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:745:20
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let left = try!(left.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:746:21
[INFO] [stdout]     |
[INFO] [stdout] 746 |         let right = try!(right.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:806:27
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:844:20
[INFO] [stdout]     |
[INFO] [stdout] 844 |         let init = try!(init.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:845:20
[INFO] [stdout]     |
[INFO] [stdout] 845 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:846:20
[INFO] [stdout]     |
[INFO] [stdout] 846 |         let step = try!(step.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:847:21
[INFO] [stdout]     |
[INFO] [stdout] 847 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:871:27
[INFO] [stdout]     |
[INFO] [stdout] 871 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:894:21
[INFO] [stdout]     |
[INFO] [stdout] 894 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:924:27
[INFO] [stdout]     |
[INFO] [stdout] 924 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:960:27
[INFO] [stdout]     |
[INFO] [stdout] 960 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:998:27
[INFO] [stdout]     |
[INFO] [stdout] 998 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1027:20
[INFO] [stdout]      |
[INFO] [stdout] 1027 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1028:26
[INFO] [stdout]      |
[INFO] [stdout] 1028 |         let true_block = try!(true_block.ok_or(()));
[INFO] [stdout]      |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1051:27
[INFO] [stdout]      |
[INFO] [stdout] 1051 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]      |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1094:18
[INFO] [stdout]      |
[INFO] [stdout] 1094 |         let op = try!(op.ok_or(()));
[INFO] [stdout]      |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1095:20
[INFO] [stdout]      |
[INFO] [stdout] 1095 |         let left = try!(left.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1096:21
[INFO] [stdout]      |
[INFO] [stdout] 1096 |         let right = try!(right.ok_or(()));
[INFO] [stdout]      |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |         try!(compare_lifetimes(Some(Lifetime::Return(vec![])), lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:412:25
[INFO] [stdout]     |
[INFO] [stdout] 412 |                         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.11s
[INFO] running `Command { std: "docker" "inspect" "aefbce37c0e4d816e5f0a1fd5e8b49fd3ae4f1079df593442229e352b3549a1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aefbce37c0e4d816e5f0a1fd5e8b49fd3ae4f1079df593442229e352b3549a1c", kill_on_drop: false }`
[INFO] [stdout] aefbce37c0e4d816e5f0a1fd5e8b49fd3ae4f1079df593442229e352b3549a1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d0bb24995cc40ed2174e8dce3f51f60c1026b8c5206521c767626e6a652bfc4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d0bb24995cc40ed2174e8dce3f51f60c1026b8c5206521c767626e6a652bfc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling dynamo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let name = try!(name.ok_or(()));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let block = try!(block.ok_or(()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:93:27
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:132:27
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:184:27
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let result = try!(result.ok_or(()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:309:27
[INFO] [stdout]     |
[INFO] [stdout] 309 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:332:19
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let key = try!(key.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |         let value = try!(value.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:350:27
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:386:27
[INFO] [stdout]     |
[INFO] [stdout] 386 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:443:27
[INFO] [stdout]     |
[INFO] [stdout] 443 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:536:27
[INFO] [stdout]     |
[INFO] [stdout] 536 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:560:20
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let base = try!(base.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:561:19
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let exp = try!(exp.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:596:27
[INFO] [stdout]     |
[INFO] [stdout] 596 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:625:20
[INFO] [stdout]     |
[INFO] [stdout] 625 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:643:27
[INFO] [stdout]     |
[INFO] [stdout] 643 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:666:20
[INFO] [stdout]     |
[INFO] [stdout] 666 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:695:27
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:744:18
[INFO] [stdout]     |
[INFO] [stdout] 744 |         let op = try!(op.ok_or(()));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:745:20
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let left = try!(left.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:746:21
[INFO] [stdout]     |
[INFO] [stdout] 746 |         let right = try!(right.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:806:27
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:844:20
[INFO] [stdout]     |
[INFO] [stdout] 844 |         let init = try!(init.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:845:20
[INFO] [stdout]     |
[INFO] [stdout] 845 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:846:20
[INFO] [stdout]     |
[INFO] [stdout] 846 |         let step = try!(step.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:847:21
[INFO] [stdout]     |
[INFO] [stdout] 847 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:871:27
[INFO] [stdout]     |
[INFO] [stdout] 871 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:894:21
[INFO] [stdout]     |
[INFO] [stdout] 894 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:924:27
[INFO] [stdout]     |
[INFO] [stdout] 924 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:960:27
[INFO] [stdout]     |
[INFO] [stdout] 960 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:998:27
[INFO] [stdout]     |
[INFO] [stdout] 998 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1027:20
[INFO] [stdout]      |
[INFO] [stdout] 1027 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1028:26
[INFO] [stdout]      |
[INFO] [stdout] 1028 |         let true_block = try!(true_block.ok_or(()));
[INFO] [stdout]      |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1051:27
[INFO] [stdout]      |
[INFO] [stdout] 1051 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]      |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1094:18
[INFO] [stdout]      |
[INFO] [stdout] 1094 |         let op = try!(op.ok_or(()));
[INFO] [stdout]      |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1095:20
[INFO] [stdout]      |
[INFO] [stdout] 1095 |         let left = try!(left.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1096:21
[INFO] [stdout]      |
[INFO] [stdout] 1096 |         let right = try!(right.ok_or(()));
[INFO] [stdout]      |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |         try!(compare_lifetimes(Some(Lifetime::Return(vec![])), lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:412:25
[INFO] [stdout]     |
[INFO] [stdout] 412 |                         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:71:20
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let name = try!(name.ok_or(()));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let block = try!(block.ok_or(()));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/ast.rs:93:27
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:132:27
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:184:27
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let result = try!(result.ok_or(()));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:309:27
[INFO] [stdout]     |
[INFO] [stdout] 309 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:332:19
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let key = try!(key.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:333:21
[INFO] [stdout]     |
[INFO] [stdout] 333 |         let value = try!(value.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:350:27
[INFO] [stdout]     |
[INFO] [stdout] 350 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:386:27
[INFO] [stdout]     |
[INFO] [stdout] 386 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:443:27
[INFO] [stdout]     |
[INFO] [stdout] 443 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:536:27
[INFO] [stdout]     |
[INFO] [stdout] 536 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:560:20
[INFO] [stdout]     |
[INFO] [stdout] 560 |         let base = try!(base.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:561:19
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let exp = try!(exp.ok_or(()));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:596:27
[INFO] [stdout]     |
[INFO] [stdout] 596 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:625:20
[INFO] [stdout]     |
[INFO] [stdout] 625 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:643:27
[INFO] [stdout]     |
[INFO] [stdout] 643 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:666:20
[INFO] [stdout]     |
[INFO] [stdout] 666 |         let name = try!(name.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:695:27
[INFO] [stdout]     |
[INFO] [stdout] 695 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:744:18
[INFO] [stdout]     |
[INFO] [stdout] 744 |         let op = try!(op.ok_or(()));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:745:20
[INFO] [stdout]     |
[INFO] [stdout] 745 |         let left = try!(left.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:746:21
[INFO] [stdout]     |
[INFO] [stdout] 746 |         let right = try!(right.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:806:27
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:844:20
[INFO] [stdout]     |
[INFO] [stdout] 844 |         let init = try!(init.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:845:20
[INFO] [stdout]     |
[INFO] [stdout] 845 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:846:20
[INFO] [stdout]     |
[INFO] [stdout] 846 |         let step = try!(step.ok_or(()));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:847:21
[INFO] [stdout]     |
[INFO] [stdout] 847 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:871:27
[INFO] [stdout]     |
[INFO] [stdout] 871 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:894:21
[INFO] [stdout]     |
[INFO] [stdout] 894 |         let block = try!(block.ok_or(()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:924:27
[INFO] [stdout]     |
[INFO] [stdout] 924 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:960:27
[INFO] [stdout]     |
[INFO] [stdout] 960 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/ast.rs:998:27
[INFO] [stdout]     |
[INFO] [stdout] 998 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1027:20
[INFO] [stdout]      |
[INFO] [stdout] 1027 |         let cond = try!(cond.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1028:26
[INFO] [stdout]      |
[INFO] [stdout] 1028 |         let true_block = try!(true_block.ok_or(()));
[INFO] [stdout]      |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1051:27
[INFO] [stdout]      |
[INFO] [stdout] 1051 |         let start_range = try!(convert.start_node(node));
[INFO] [stdout]      |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1094:18
[INFO] [stdout]      |
[INFO] [stdout] 1094 |         let op = try!(op.ok_or(()));
[INFO] [stdout]      |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1095:20
[INFO] [stdout]      |
[INFO] [stdout] 1095 |         let left = try!(left.ok_or(()));
[INFO] [stdout]      |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/ast.rs:1096:21
[INFO] [stdout]      |
[INFO] [stdout] 1096 |         let right = try!(right.ok_or(()));
[INFO] [stdout]      |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:368:9
[INFO] [stdout]     |
[INFO] [stdout] 368 |         try!(compare_lifetimes(Some(Lifetime::Return(vec![])), lifetime_right, &nodes));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lifetime.rs:412:25
[INFO] [stdout]     |
[INFO] [stdout] 412 |                         try!(compare_lifetimes(lifetime_left, lifetime_right, &nodes));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dynamo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6d0bb24995cc40ed2174e8dce3f51f60c1026b8c5206521c767626e6a652bfc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0bb24995cc40ed2174e8dce3f51f60c1026b8c5206521c767626e6a652bfc4", kill_on_drop: false }`
[INFO] [stdout] 6d0bb24995cc40ed2174e8dce3f51f60c1026b8c5206521c767626e6a652bfc4