[INFO] fetching crate service_discovery 0.3.0...
[INFO] checking service_discovery-0.3.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate service_discovery 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate service_discovery 0.3.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate service_discovery 0.3.0
[INFO] finished tweaking crates.io crate service_discovery 0.3.0
[INFO] tweaked toml for crates.io crate service_discovery 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", 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] a4d26e0bb120f958855a163202122f03611ca0ff0d09c97a86460aa5af4ebdba
[INFO] running `Command { std: "docker" "start" "-a" "a4d26e0bb120f958855a163202122f03611ca0ff0d09c97a86460aa5af4ebdba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d26e0bb120f958855a163202122f03611ca0ff0d09c97a86460aa5af4ebdba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d26e0bb120f958855a163202122f03611ca0ff0d09c97a86460aa5af4ebdba", kill_on_drop: false }`
[INFO] [stdout] a4d26e0bb120f958855a163202122f03611ca0ff0d09c97a86460aa5af4ebdba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17d038ec1b4cf8172c523729f155cf30cb8a4117f2770a060b8ebeef30d6e0a8
[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" "17d038ec1b4cf8172c523729f155cf30cb8a4117f2770a060b8ebeef30d6e0a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking bincode v0.5.9
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking maidsafe_utilities v0.4.1
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]     Checking service_discovery v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `exceeding_bitshifts` has been renamed to `arithmetic_overflow`
[INFO] [stdout]   --> src/lib.rs:29:22
[INFO] [stdout]    |
[INFO] [stdout] 29 | #![forbid(bad_style, exceeding_bitshifts, mutable_transmutes, no_mangle_const_items,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use the new name: `arithmetic_overflow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(deprecated) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |         ^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `drop_with_repr_extern` has been removed: `drop flags have been removed`
[INFO] [stdout]   --> src/lib.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:30:32
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    = note: `#[forbid(renamed_and_removed_lints)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(improper_ctypes) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:31:44
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(non_shorthand_field_patterns) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout] 32 |         non_shorthand_field_patterns, overflowing_literals, plugin_as_library,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `plugin_as_library` has been removed: `plugins have been deprecated and retired`
[INFO] [stdout]   --> src/lib.rs:32:61
[INFO] [stdout]    |
[INFO] [stdout] 32 |         non_shorthand_field_patterns, overflowing_literals, plugin_as_library,
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `private_no_mangle_fns` has been removed: `no longer a warning, `#[no_mangle]` functions always exported`
[INFO] [stdout]   --> src/lib.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `private_no_mangle_statics` has been removed: `no longer a warning, `#[no_mangle]` statics always exported`
[INFO] [stdout]   --> src/lib.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(stable_features) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:33:59
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unconditional_recursion) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:33:76
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unknown_lints) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                     ^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_allocation) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_attributes) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:64
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_comparisons) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_features) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_parens) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(while_true) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:61
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                                                             ^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `fat_ptr_transmutes` has been removed: `was accidentally removed back in 2014`
[INFO] [stdout]   --> src/lib.rs:38:24
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![allow(box_pointers, fat_ptr_transmutes, missing_copy_implementations,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `exceeding_bitshifts` has been renamed to `arithmetic_overflow`
[INFO] [stdout]   --> src/lib.rs:29:22
[INFO] [stdout]    |
[INFO] [stdout] 29 | #![forbid(bad_style, exceeding_bitshifts, mutable_transmutes, no_mangle_const_items,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ help: use the new name: `arithmetic_overflow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(deprecated) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |         ^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `drop_with_repr_extern` has been removed: `drop flags have been removed`
[INFO] [stdout]   --> src/lib.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:30:32
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                ^^^^^^^^
[INFO] [stdout]    = note: `#[forbid(renamed_and_removed_lints)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(improper_ctypes) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:31:44
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(non_shorthand_field_patterns) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] 31 | #![deny(deprecated, drop_with_repr_extern, improper_ctypes, missing_docs,
[INFO] [stdout] 32 |         non_shorthand_field_patterns, overflowing_literals, plugin_as_library,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `plugin_as_library` has been removed: `plugins have been deprecated and retired`
[INFO] [stdout]   --> src/lib.rs:32:61
[INFO] [stdout]    |
[INFO] [stdout] 32 |         non_shorthand_field_patterns, overflowing_literals, plugin_as_library,
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `private_no_mangle_fns` has been removed: `no longer a warning, `#[no_mangle]` functions always exported`
[INFO] [stdout]   --> src/lib.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `private_no_mangle_statics` has been removed: `no longer a warning, `#[no_mangle]` statics always exported`
[INFO] [stdout]   --> src/lib.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(stable_features) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:33:59
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unconditional_recursion) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:33:76
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 33 |         private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
[INFO] [stdout]    |                                                                            ^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unknown_lints) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                     ^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_allocation) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_attributes) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:34:64
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 34 |         unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_comparisons) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_features) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(unused_parens) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: deny(while_true) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:35:61
[INFO] [stdout]    |
[INFO] [stdout] 30 |           unknown_crate_types, warnings)]
[INFO] [stdout]    |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]    |                                                             ^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: lint `fat_ptr_transmutes` has been removed: `was accidentally removed back in 2014`
[INFO] [stdout]   --> src/lib.rs:38:24
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![allow(box_pointers, fat_ptr_transmutes, missing_copy_implementations,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |             try!(ServiceDiscoveryImpl::<Reply, ReplyGen>::start(port, generator));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:30:32
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     = note: `#[forbid(deprecated)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: allow(unused_qualifications) incompatible with previous forbid
[INFO] [stdout]    --> src/lib.rs:141:10
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 141 | #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: allow(unused_qualifications) incompatible with previous forbid
[INFO] [stdout]    --> src/lib.rs:141:26
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 141 | #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |             try!(serialise::<DiscoveryMsg<Reply>>(&DiscoveryMsg::Request).map_err(|_| {
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:251:40
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let bind_addr = unwrap_option!(try!(("0.0.0.0", port).to_socket_addrs()).next(),
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:254:26
[INFO] [stdout]     |
[INFO] [stdout] 254 |         let udp_socket = try!(UdpSocket::v4());
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         let mut addr = try!(SocketAddr::from_str("0.0.0.0:0").map_err(|_| {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:264:25
[INFO] [stdout]     |
[INFO] [stdout] 264 |                         try!(udp_socket.bind(&addr));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:265:32
[INFO] [stdout]     |
[INFO] [stdout] 265 |                         addr = try!(udp_socket.local_addr());
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |         try!(udp_socket.set_broadcast(true));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:277:28
[INFO] [stdout]     |
[INFO] [stdout] 277 |             seek_peers_on: try!(SocketAddr::from_str(&format!("255.255.255.255:{}", port))
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut event_loop = try!(EventLoop::new());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(event_loop.register(&discovery_impl.socket,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:312:48
[INFO] [stdout]     |
[INFO] [stdout] 312 |         if let Some((bytes_read, peer_addr)) = try!(self.socket.recv_from(&mut self.read_buf)) {
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:324:25
[INFO] [stdout]     |
[INFO] [stdout] 324 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:329:25
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:339:21
[INFO] [stdout]     |
[INFO] [stdout] 339 |                     try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:357:36
[INFO] [stdout]     |
[INFO] [stdout] 357 |             let serialised_reply = try!(serialise(&reply).map_err(|_| {
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:363:45
[INFO] [stdout]     |
[INFO] [stdout] 363 |                     if let Some(bytes_tx) = try!(self.socket
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:368:25
[INFO] [stdout]     |
[INFO] [stdout] 368 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:379:41
[INFO] [stdout]     |
[INFO] [stdout] 379 |                 if let Some(bytes_tx) = try!(self.socket
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:384:21
[INFO] [stdout]     |
[INFO] [stdout] 384 |                     try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |         Ok(try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |             try!(ServiceDiscoveryImpl::<Reply, ReplyGen>::start(port, generator));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:30:32
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     = note: `#[forbid(deprecated)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: allow(unused_qualifications) incompatible with previous forbid
[INFO] [stdout]    --> src/lib.rs:141:10
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 141 | #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |          ^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: allow(unused_qualifications) incompatible with previous forbid
[INFO] [stdout]    --> src/lib.rs:141:26
[INFO] [stdout]     |
[INFO] [stdout] 30  |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                -------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 141 | #[derive(RustcEncodable, RustcDecodable)]
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |             try!(serialise::<DiscoveryMsg<Reply>>(&DiscoveryMsg::Request).map_err(|_| {
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:251:40
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let bind_addr = unwrap_option!(try!(("0.0.0.0", port).to_socket_addrs()).next(),
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:254:26
[INFO] [stdout]     |
[INFO] [stdout] 254 |         let udp_socket = try!(UdpSocket::v4());
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 261 |                         let mut addr = try!(SocketAddr::from_str("0.0.0.0:0").map_err(|_| {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:264:25
[INFO] [stdout]     |
[INFO] [stdout] 264 |                         try!(udp_socket.bind(&addr));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:265:32
[INFO] [stdout]     |
[INFO] [stdout] 265 |                         addr = try!(udp_socket.local_addr());
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |         try!(udp_socket.set_broadcast(true));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:277:28
[INFO] [stdout]     |
[INFO] [stdout] 277 |             seek_peers_on: try!(SocketAddr::from_str(&format!("255.255.255.255:{}", port))
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut event_loop = try!(EventLoop::new());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:290:9
[INFO] [stdout]     |
[INFO] [stdout] 290 |         try!(event_loop.register(&discovery_impl.socket,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:312:48
[INFO] [stdout]     |
[INFO] [stdout] 312 |         if let Some((bytes_read, peer_addr)) = try!(self.socket.recv_from(&mut self.read_buf)) {
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:324:25
[INFO] [stdout]     |
[INFO] [stdout] 324 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:329:25
[INFO] [stdout]     |
[INFO] [stdout] 329 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:339:21
[INFO] [stdout]     |
[INFO] [stdout] 339 |                     try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:357:36
[INFO] [stdout]     |
[INFO] [stdout] 357 |             let serialised_reply = try!(serialise(&reply).map_err(|_| {
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:363:45
[INFO] [stdout]     |
[INFO] [stdout] 363 |                     if let Some(bytes_tx) = try!(self.socket
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:368:25
[INFO] [stdout]     |
[INFO] [stdout] 368 |                         try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:379:41
[INFO] [stdout]     |
[INFO] [stdout] 379 |                 if let Some(bytes_tx) = try!(self.socket
[INFO] [stdout]     |                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:384:21
[INFO] [stdout]     |
[INFO] [stdout] 384 |                     try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:393:12
[INFO] [stdout]     |
[INFO] [stdout] 393 |         Ok(try!(event_loop.reregister(&self.socket,
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 41 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0453`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `service_discovery`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 41 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0453`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "17d038ec1b4cf8172c523729f155cf30cb8a4117f2770a060b8ebeef30d6e0a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d038ec1b4cf8172c523729f155cf30cb8a4117f2770a060b8ebeef30d6e0a8", kill_on_drop: false }`
[INFO] [stdout] 17d038ec1b4cf8172c523729f155cf30cb8a4117f2770a060b8ebeef30d6e0a8