hello-world example does not build

[timthelion]

subuser@c0b8b1978224fe02d0a1:/pwd/src/play/examples/hello-world$ cargo build
   Compiling semver-parser v0.7.0
   Compiling libc v0.2.54
   Compiling autocfg v0.1.2
   Compiling rand_core v0.4.0
   Compiling proc-macro2 v0.4.30
   Compiling unicode-xid v0.1.0
   Compiling byteorder v1.3.1
   Compiling cc v1.0.36
   Compiling stable_deref_trait v1.1.1
   Compiling syn v0.15.34
   Compiling cfg-if v0.1.7
   Compiling lazy_static v1.3.0
   Compiling scopeguard v0.3.3
   Compiling smallvec v0.6.9
   Compiling encoding_index_tests v0.1.4
   Compiling fnv v1.0.6
   Compiling lazycell v1.2.1
   Compiling slab v0.4.2
   Compiling futures v0.1.27
   Compiling matches v0.1.8
   Compiling failure_derive v0.1.5
   Compiling rustc-demangle v0.1.14
   Compiling percent-encoding v1.0.1
   Compiling num-traits v0.2.6
   Compiling version_check v0.1.5
   Compiling memchr v2.2.0
   Compiling ryu v0.2.8
   Compiling void v1.0.2
   Compiling quick-error v1.2.2
   Compiling crc32fast v1.2.0
   Compiling serde v1.0.91
   Compiling linked-hash-map v0.5.2
   Compiling num-integer v0.1.39
   Compiling itoa v0.4.4
   Compiling regex v1.1.6
   Compiling arc-swap v0.3.11
   Compiling ucd-util v0.1.3
   Compiling httparse v1.3.3
   Compiling spin v0.5.0
   Compiling indexmap v1.0.2
   Compiling dtoa v0.4.4
   Compiling untrusted v0.6.2
   Compiling string v0.1.3
   Compiling either v1.5.2
   Compiling utf8-ranges v1.0.2
   Compiling language-tags v0.2.2
   Compiling copyless v0.1.2
   Compiling sha1 v0.6.0
   Compiling hashbrown v0.2.2
   Compiling bitflags v1.0.4
   Compiling termcolor v1.0.4
   Compiling rand_core v0.3.1
   Compiling rand_jitter v0.1.4
   Compiling semver v0.9.0
   Compiling rand_pcg v0.1.2
   Compiling rand_chacha v0.1.1
   Compiling rand v0.6.5
   Compiling backtrace v0.3.15
   Compiling owning_ref v0.4.0
   Compiling log v0.4.6
   Compiling crossbeam-utils v0.6.5
   Compiling thread_local v0.3.6
   Compiling encoding-index-tradchinese v1.20141219.5
   Compiling encoding-index-korean v1.20141219.5
   Compiling encoding-index-simpchinese v1.20141219.5
   Compiling encoding-index-japanese v1.20141219.5
   Compiling encoding-index-singlebyte v1.20141219.5
   Compiling unicode-bidi v0.3.4
   Compiling unicode-normalization v0.1.8
   Compiling backtrace-sys v0.1.28
   Compiling brotli-sys v0.3.2
   Compiling miniz-sys v0.1.11
   Compiling ring v0.14.6
   Compiling unicase v2.4.0
   Compiling humantime v1.2.0
   Compiling lru-cache v0.1.2
   Compiling tokio-sync v0.1.5
   Compiling actix-service v0.3.6
   Compiling regex-syntax v0.6.6
   Compiling rand_hc v0.1.0
   Compiling rand_xorshift v0.1.1
   Compiling rand_isaac v0.1.1
   Compiling lock_api v0.1.5
   Compiling rustc_version v0.2.3
   Compiling tokio-executor v0.1.7
   Compiling encoding v0.2.33
   Compiling rand_os v0.1.3
   Compiling iovec v0.1.2
   Compiling net2 v0.2.33
   Compiling num_cpus v1.10.0
   Compiling hostname v0.1.5
   Compiling socket2 v0.3.9
   Compiling signal-hook-registry v1.0.1
   Compiling time v0.1.42
   Compiling atty v0.2.11
   Compiling base64 v0.10.1
   Compiling parking_lot_core v0.4.0
   Compiling quote v0.6.12
   Compiling tokio-timer v0.2.10
   Compiling tokio-current-thread v0.1.6
   Compiling aho-corasick v0.7.3
   Compiling bytes v0.4.12
   Compiling threadpool v1.7.1
   Compiling mio v0.6.16
   Compiling resolv-conf v0.6.2
   Compiling signal-hook v0.1.9
   Compiling chrono v0.4.6
   Compiling flate2 v1.0.7
   Compiling mime v0.3.13
   Compiling brotli2 v0.3.2
   Compiling tokio-io v0.1.12
   Compiling http v0.1.17
   Compiling string v0.2.0
   Compiling mio-uds v0.6.7
   Compiling idna v0.1.5
   Compiling tokio-codec v0.1.1
   Compiling url v1.7.2
   Compiling h2 v0.1.18
   Compiling env_logger v0.6.1
   Compiling actix-codec v0.1.2
   Compiling parking_lot v0.7.1
   Compiling synstructure v0.10.1
   Compiling enum-as-inner v0.2.1
   Compiling serde_derive v1.0.91
   Compiling derive_more v0.14.0
   Compiling actix-web-codegen v0.1.0-beta.1
   Compiling actix-utils v0.3.5
   Compiling tokio-reactor v0.1.9
   Compiling tokio-tcp v0.1.3
   Compiling tokio-udp v0.1.3
   Compiling tokio-signal v0.2.7
   Compiling failure v0.1.5
   Compiling actix-server-config v0.1.1
   Compiling actix-threadpool v0.1.0
   Compiling trust-dns-proto v0.7.3
   Compiling actix-rt v0.2.2
error[E0004]: non-exhaustive patterns: `_` not covered
   --> /home/subuser/.cargo/registry/src/github.com-1ecc6299db9ec823/trust-dns-proto-0.7.3/src/rr/rdata/tlsa.rs:134:15
    |
134 |         match usage {
    |               ^^^^^ pattern `_` not covered

error[E0004]: non-exhaustive patterns: `_` not covered
   --> /home/subuser/.cargo/registry/src/github.com-1ecc6299db9ec823/trust-dns-proto-0.7.3/src/rr/rdata/tlsa.rs:193:15
    |
193 |         match selector {
    |               ^^^^^^^^ pattern `_` not covered

error[E0004]: non-exhaustive patterns: `_` not covered
   --> /home/subuser/.cargo/registry/src/github.com-1ecc6299db9ec823/trust-dns-proto-0.7.3/src/rr/rdata/tlsa.rs:254:15
    |
254 |         match matching {
    |               ^^^^^^^^ pattern `_` not covered

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0004`.
error: Could not compile `trust-dns-proto`.
warning: build failed, waiting for other jobs to finish...
error: build failed
subuser@c0b8b1978224fe02d0a1:/pwd/src/play/examples/hello-world$ git log -n 1
commit 68509a7eaf4b382aa814d250c0db838c83a2834d (HEAD -> master, origin/master, origin/HEAD)
Author: huang.xiangdong <huang.xiangdong@99cloud.net>
Date:   Mon May 6 15:26:42 2019 +0800

    use absolute path
subuser@c0b8b1978224fe02d0a1:/pwd/src/play/examples/hello-world$ cargo --version
cargo 1.32.0
subuser@c0b8b1978224fe02d0a1:/pwd/src/play/examples/hello-world$ rustc --version
rustc 1.32.0

Perhaps it would help if the examples included Cargo.lock files so that we would have a known good dependency DAG?

[timthelion]

Perhaps related: actix/actix#177

[timthelion]

I tried both cargo update and cargo clean without any change.

[fafhrd91]

you have to upgrade rust compiler