[INFO] updating cached repository Anecoz/falafel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Anecoz/falafel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Anecoz/falafel" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Anecoz/falafel"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Anecoz/falafel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Anecoz/falafel" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Anecoz/falafel"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Anecoz/falafel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cead85f03b4f823a579b55067295870e184ed49e
[INFO] sha for GitHub repo Anecoz/falafel: cead85f03b4f823a579b55067295870e184ed49e
[INFO] validating manifest of Anecoz/falafel on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Anecoz/falafel on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Anecoz/falafel
[INFO] finished frobbing Anecoz/falafel
[INFO] frobbed toml for Anecoz/falafel written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Anecoz/falafel/Cargo.toml
[INFO] started frobbing Anecoz/falafel
[INFO] finished frobbing Anecoz/falafel
[INFO] frobbed toml for Anecoz/falafel written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Anecoz/falafel/Cargo.toml
[INFO] crate Anecoz/falafel already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Anecoz/falafel against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Anecoz/falafel:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c56190fc720493a67f68de103b8ca0ff12b776ac72378563ac477b216d63a1a
[INFO] running `"docker" "start" "-a" "2c56190fc720493a67f68de103b8ca0ff12b776ac72378563ac477b216d63a1a"`
[INFO] [stderr]     Checking falafel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `serialize`
[INFO] [stderr]   --> src/common.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   pub fn serialize(packet: PacketType) -> Vec<u8> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `serialize`
[INFO] [stderr]   --> src/common.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   pub fn serialize(packet: PacketType) -> Vec<u8> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `HEADER_SIZE`
[INFO] [stderr]  --> src/common.rs:2:3
[INFO] [stderr]   |
[INFO] [stderr] 2 |   pub const HEADER_SIZE: u32 = 2; // 1 byte for type, 1 byte for size of packet
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PacketHeader`
[INFO] [stderr]  --> src/common.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   pub struct PacketHeader {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize_header`
[INFO] [stderr]   --> src/common.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn deserialize_header(header_bytes: Vec<u8>) -> PacketHeader {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/common.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   pub fn deserialize(header: PacketHeader, content_bytes: Vec<u8>) -> PacketType {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/client.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     std::io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/client.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     writer.write(&serialized[..]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `HEADER_SIZE`
[INFO] [stderr]  --> src/common.rs:2:3
[INFO] [stderr]   |
[INFO] [stderr] 2 |   pub const HEADER_SIZE: u32 = 2; // 1 byte for type, 1 byte for size of packet
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PacketHeader`
[INFO] [stderr]  --> src/common.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   pub struct PacketHeader {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize_header`
[INFO] [stderr]   --> src/common.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn deserialize_header(header_bytes: Vec<u8>) -> PacketHeader {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/common.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   pub fn deserialize(header: PacketHeader, content_bytes: Vec<u8>) -> PacketType {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/client.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     std::io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/client.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     writer.write(&serialized[..]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "2c56190fc720493a67f68de103b8ca0ff12b776ac72378563ac477b216d63a1a"`
[INFO] running `"docker" "rm" "-f" "2c56190fc720493a67f68de103b8ca0ff12b776ac72378563ac477b216d63a1a"`
[INFO] [stdout] 2c56190fc720493a67f68de103b8ca0ff12b776ac72378563ac477b216d63a1a