[INFO] updating cached repository bschwind/mqtt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bschwind/mqtt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bschwind/mqtt" "work/ex/beta-1.38-1/sources/1.37.0/gh/bschwind/mqtt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bschwind/mqtt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bschwind/mqtt" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bschwind/mqtt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bschwind/mqtt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 36acbe04a81231bfb4c7c24fe654bb7d2b7fd7da
[INFO] sha for GitHub repo bschwind/mqtt: 36acbe04a81231bfb4c7c24fe654bb7d2b7fd7da
[INFO] validating manifest of bschwind/mqtt on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bschwind/mqtt on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bschwind/mqtt
[INFO] finished frobbing bschwind/mqtt
[INFO] frobbed toml for bschwind/mqtt written to work/ex/beta-1.38-1/sources/1.37.0/gh/bschwind/mqtt/Cargo.toml
[INFO] started frobbing bschwind/mqtt
[INFO] finished frobbing bschwind/mqtt
[INFO] frobbed toml for bschwind/mqtt written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bschwind/mqtt/Cargo.toml
[INFO] crate bschwind/mqtt already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing bschwind/mqtt against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bschwind/mqtt:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ce7ff2314e66abdd8e24e002ea90918a4bad27ffa31c7e3d6dd127329ec5646b
[INFO] running `"docker" "start" "-a" "ce7ff2314e66abdd8e24e002ea90918a4bad27ffa31c7e3d6dd127329ec5646b"`
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling mio v0.6.0
[INFO] [stderr]    Compiling mqtt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0437]: type `Err` is not a member of trait `TryFrom`
[INFO] [stderr]   --> src/protocol/control_packet_type.rs:24:2
[INFO] [stderr]    |
[INFO] [stderr] 24 |     type Err = MqttParseError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `TryFrom`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::Err::NodePosition`
[INFO] [stderr]  --> src/parser.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nom::Err::NodePosition;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::ErrorKind::Custom`
[INFO] [stderr]  --> src/parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use nom::ErrorKind::Custom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/parser.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |         match ControlPacketType::try_from(((first_byte & 0b11110000) >> 4)) {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `protocol::control_packet_type::ControlPacketType`
[INFO] [stderr]  --> src/protocol/variable_header.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use protocol::control_packet_type::ControlPacketType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `protocol::control_packet_type::ControlPacketType`
[INFO] [stderr]  --> src/protocol/payload.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use protocol::control_packet_type::ControlPacketType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0046]: not all trait items implemented, missing: `Error`
[INFO] [stderr]   --> src/protocol/control_packet_type.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl TryFrom<u8> for ControlPacketType {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `Error` in implementation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Error` from trait: `type Error;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0046, E0437, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0046`.
[INFO] [stderr] error: Could not compile `mqtt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ce7ff2314e66abdd8e24e002ea90918a4bad27ffa31c7e3d6dd127329ec5646b"`
[INFO] running `"docker" "rm" "-f" "ce7ff2314e66abdd8e24e002ea90918a4bad27ffa31c7e3d6dd127329ec5646b"`
[INFO] [stdout] ce7ff2314e66abdd8e24e002ea90918a4bad27ffa31c7e3d6dd127329ec5646b