[INFO] updating cached repository https://github.com/jjacobson93/graphael
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcdfa64c1b22888b351fde3db67bf060a5dc1415
[INFO] testing jjacobson93/graphael against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjacobson93%2Fgraphael" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jjacobson93/graphael on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jjacobson93/graphael
[INFO] finished tweaking git repo https://github.com/jjacobson93/graphael
[INFO] tweaked toml for git repo https://github.com/jjacobson93/graphael written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jjacobson93/graphael already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a69b42ee5dbdc7c9b46038e603ef1a607b256c034d008e1551f4642856ed1af
[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" "9a69b42ee5dbdc7c9b46038e603ef1a607b256c034d008e1551f4642856ed1af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a69b42ee5dbdc7c9b46038e603ef1a607b256c034d008e1551f4642856ed1af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a69b42ee5dbdc7c9b46038e603ef1a607b256c034d008e1551f4642856ed1af", kill_on_drop: false }`
[INFO] [stdout] 9a69b42ee5dbdc7c9b46038e603ef1a607b256c034d008e1551f4642856ed1af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f63046f06944337ccb7fb3eb6ee5d8fcf4a7f8c64b46d2d832a09689d4c308f
[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" "0f63046f06944337ccb7fb3eb6ee5d8fcf4a7f8c64b46d2d832a09689d4c308f", kill_on_drop: false }`
[INFO] [stderr]    Compiling graphael v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let nodes = try!(decoder.read_struct_field("nodes", 0, |decoder| {
[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/graph.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         let node_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:90:41
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         let node:Node = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             try!(decoder.read_struct_field("edges", 0, |decoder| {
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:109:44
[INFO] [stdout]     |
[INFO] [stdout] 109 |                         let source_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:110:65
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let edge_map:HashMap<NodeIndex, Edge> = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]     |                                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:164:18
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let mut file = try!(File::create(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "0f63046f06944337ccb7fb3eb6ee5d8fcf4a7f8c64b46d2d832a09689d4c308f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f63046f06944337ccb7fb3eb6ee5d8fcf4a7f8c64b46d2d832a09689d4c308f", kill_on_drop: false }`
[INFO] [stdout] 0f63046f06944337ccb7fb3eb6ee5d8fcf4a7f8c64b46d2d832a09689d4c308f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e74f7965afdc49f37e1f9aac50b948b3e7e2a4ad44cfc2d22fdf1ae1a7c5279a
[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" "e74f7965afdc49f37e1f9aac50b948b3e7e2a4ad44cfc2d22fdf1ae1a7c5279a", kill_on_drop: false }`
[INFO] [stderr]    Compiling graphael v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let nodes = try!(decoder.read_struct_field("nodes", 0, |decoder| {
[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/graph.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         let node_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:90:41
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         let node:Node = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             try!(decoder.read_struct_field("edges", 0, |decoder| {
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:109:44
[INFO] [stdout]     |
[INFO] [stdout] 109 |                         let source_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:110:65
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let edge_map:HashMap<NodeIndex, Edge> = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]     |                                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:164:18
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let mut file = try!(File::create(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:85:25
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let nodes = try!(decoder.read_struct_field("nodes", 0, |decoder| {
[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/graph.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         let node_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/graph.rs:90:41
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         let node:Node = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]    |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             try!(decoder.read_struct_field("edges", 0, |decoder| {
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:109:44
[INFO] [stdout]     |
[INFO] [stdout] 109 |                         let source_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:110:65
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let edge_map:HashMap<NodeIndex, Edge> = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stdout]     |                                                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/graph.rs:164:18
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let mut file = try!(File::create(name));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "e74f7965afdc49f37e1f9aac50b948b3e7e2a4ad44cfc2d22fdf1ae1a7c5279a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e74f7965afdc49f37e1f9aac50b948b3e7e2a4ad44cfc2d22fdf1ae1a7c5279a", kill_on_drop: false }`
[INFO] [stdout] e74f7965afdc49f37e1f9aac50b948b3e7e2a4ad44cfc2d22fdf1ae1a7c5279a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9bb41aaa600b14d295c4c7f6f566ef4e5b12b1f1416df7f1ef1aaf0194802111
[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" "9bb41aaa600b14d295c4c7f6f566ef4e5b12b1f1416df7f1ef1aaf0194802111", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/graph.rs:85:25
[INFO] [stderr]    |
[INFO] [stderr] 85 |             let nodes = try!(decoder.read_struct_field("nodes", 0, |decoder| {
[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/graph.rs:89:42
[INFO] [stderr]    |
[INFO] [stderr] 89 |                         let node_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stderr]    |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/graph.rs:90:41
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         let node:Node = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stderr]    |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |             try!(decoder.read_struct_field("edges", 0, |decoder| {
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:109:44
[INFO] [stderr]     |
[INFO] [stderr] 109 |                         let source_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:110:65
[INFO] [stderr]     |
[INFO] [stderr] 110 |                         let edge_map:HashMap<NodeIndex, Edge> = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stderr]     |                                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:164:18
[INFO] [stderr]     |
[INFO] [stderr] 164 |         let mut file = try!(File::create(name));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/graph.rs:85:25
[INFO] [stderr]    |
[INFO] [stderr] 85 |             let nodes = try!(decoder.read_struct_field("nodes", 0, |decoder| {
[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/graph.rs:89:42
[INFO] [stderr]    |
[INFO] [stderr] 89 |                         let node_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stderr]    |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/graph.rs:90:41
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         let node:Node = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stderr]    |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |             try!(decoder.read_struct_field("edges", 0, |decoder| {
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:109:44
[INFO] [stderr]     |
[INFO] [stderr] 109 |                         let source_index = try!(decoder.read_map_elt_key(idx, |decoder| decoder.read_usize()));
[INFO] [stderr]     |                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:110:65
[INFO] [stderr]     |
[INFO] [stderr] 110 |                         let edge_map:HashMap<NodeIndex, Edge> = try!(decoder.read_map_elt_val(idx, |decoder| Decodable::decode(decoder)));
[INFO] [stderr]     |                                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/graph.rs:164:18
[INFO] [stderr]     |
[INFO] [stderr] 164 |         let mut file = try!(File::create(name));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/graphael-3d8958b2415cb13f
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::node_properties ... ok
[INFO] [stdout] test tests::adding_nodes ... ok
[INFO] [stdout] test tests::connecting_nodes ... ok
[INFO] [stdout] test tests::removing_nodes ... ok
[INFO] [stdout] test tests::json_io ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/graphael_shell-0689edbda6c5cd79
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests graphael
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9bb41aaa600b14d295c4c7f6f566ef4e5b12b1f1416df7f1ef1aaf0194802111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bb41aaa600b14d295c4c7f6f566ef4e5b12b1f1416df7f1ef1aaf0194802111", kill_on_drop: false }`
[INFO] [stdout] 9bb41aaa600b14d295c4c7f6f566ef4e5b12b1f1416df7f1ef1aaf0194802111