[INFO] fetching crate grubbnet 0.1.3...
[INFO] testing grubbnet-0.1.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate grubbnet 0.1.3 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate grubbnet 0.1.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grubbnet 0.1.3
[INFO] finished tweaking crates.io crate grubbnet 0.1.3
[INFO] tweaked toml for crates.io crate grubbnet 0.1.3 written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] crate crates.io crate grubbnet 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b2892fdc91708593948e4c98237096ac2c53611ae79fc3ce07f89e342839c25
[INFO] running `Command { std: "docker" "start" "-a" "9b2892fdc91708593948e4c98237096ac2c53611ae79fc3ce07f89e342839c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b2892fdc91708593948e4c98237096ac2c53611ae79fc3ce07f89e342839c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b2892fdc91708593948e4c98237096ac2c53611ae79fc3ce07f89e342839c25", kill_on_drop: false }`
[INFO] [stdout] 9b2892fdc91708593948e4c98237096ac2c53611ae79fc3ce07f89e342839c25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7817d38996bdd57a6c8fc60a7745e451833b52d99d5a2bf099447eee1a222d5
[INFO] running `Command { std: "docker" "start" "-a" "c7817d38996bdd57a6c8fc60a7745e451833b52d99d5a2bf099447eee1a222d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling grubbnet v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.88s
[INFO] running `Command { std: "docker" "inspect" "c7817d38996bdd57a6c8fc60a7745e451833b52d99d5a2bf099447eee1a222d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7817d38996bdd57a6c8fc60a7745e451833b52d99d5a2bf099447eee1a222d5", kill_on_drop: false }`
[INFO] [stdout] c7817d38996bdd57a6c8fc60a7745e451833b52d99d5a2bf099447eee1a222d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be0c55fa211d66aa0a5118d46cb45feeca9880591b5cdb716ab749c3582a4633
[INFO] running `Command { std: "docker" "start" "-a" "be0c55fa211d66aa0a5118d46cb45feeca9880591b5cdb716ab749c3582a4633", kill_on_drop: false }`
[INFO] [stderr]    Compiling grubbnet v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:15:28
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            expected enum `Result`, found struct `Vec`
[INFO] [stdout]    |                            help: change the output type to match the trait: `Result<Vec<u8>, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PingPacket) -> Result<Vec<_>, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&PingPacket) -> Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `deserialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:22:37
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn deserialize(_data: &[u8]) -> Self {
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected enum `Result`, found struct `PingPacket`
[INFO] [stdout]    |                                     help: change the output type to match the trait: `Result<PingPacket, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> Result<PingPacket, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&[u8]) -> PingPacket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:43:28
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            expected enum `Result`, found struct `Vec`
[INFO] [stdout]    |                            help: change the output type to match the trait: `Result<Vec<u8>, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PongPacket) -> Result<Vec<_>, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&PongPacket) -> Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `deserialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn deserialize(data: &[u8]) -> Self {
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    expected enum `Result`, found struct `PongPacket`
[INFO] [stdout]    |                                    help: change the output type to match the trait: `Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&[u8]) -> PongPacket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_server.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            expected enum `Result`, found struct `Vec`
[INFO] [stdout]    |                            help: change the output type to match the trait: `Result<Vec<u8>, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PingPacket) -> Result<Vec<_>, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&PingPacket) -> Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `deserialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_server.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn deserialize(data: &[u8]) -> Self {
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    expected enum `Result`, found struct `PingPacket`
[INFO] [stdout]    |                                    help: change the output type to match the trait: `Result<PingPacket, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> Result<PingPacket, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&[u8]) -> PingPacket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_server.rs:44:28
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            expected enum `Result`, found struct `Vec`
[INFO] [stdout]    |                            help: change the output type to match the trait: `Result<Vec<u8>, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PongPacket) -> Result<Vec<_>, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&PongPacket) -> Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `deserialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_server.rs:51:37
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn deserialize(_data: &[u8]) -> Self {
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     expected enum `Result`, found struct `PongPacket`
[INFO] [stdout]    |                                     help: change the output type to match the trait: `Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&[u8]) -> PongPacket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0609]: no field `msg` on type `Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]    --> examples/simple_client.rs:102:53
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     println!("Got pong: {}", packet.msg);
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0053, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grubbnet`
[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[E0609]: no field `msg` on type `Result<PingPacket, grubbnet::Error>`
[INFO] [stdout]    --> examples/simple_server.rs:112:77
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     println!("Got ping from client {}: {}", token.0, packet.msg);
[INFO] [stdout]     |                                                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> examples/simple_server.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 69  | /     loop {
[INFO] [stdout] 70  | |         // Sleep for a lil bit so we don't hog the CPU
[INFO] [stdout] 71  | |         std::thread::sleep(std::time::Duration::from_millis(100));
[INFO] [stdout] 72  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |         }
[INFO] [stdout] 133 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 134 | 
[INFO] [stdout] 135 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0053, E0609.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "be0c55fa211d66aa0a5118d46cb45feeca9880591b5cdb716ab749c3582a4633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be0c55fa211d66aa0a5118d46cb45feeca9880591b5cdb716ab749c3582a4633", kill_on_drop: false }`
[INFO] [stdout] be0c55fa211d66aa0a5118d46cb45feeca9880591b5cdb716ab749c3582a4633
