[INFO] fetching crate grubbnet 0.1.3...
[INFO] checking grubbnet-0.1.3 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate grubbnet 0.1.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate grubbnet 0.1.3 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded typenum v1.11.2
[INFO] [stderr]   Downloaded openssl-sys v0.9.53
[INFO] [stderr]   Downloaded bincode v1.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.102
[INFO] [stderr]   Downloaded vcpkg v0.2.7
[INFO] [stderr]   Downloaded net2 v0.2.33
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] [stderr]   Downloaded blowfish v0.4.0
[INFO] [stderr]   Downloaded byteorder v1.3.2
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.6
[INFO] [stderr]   Downloaded derive_more v0.15.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded openssl v0.10.26
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded block-cipher-trait v0.6.2
[INFO] [stderr]   Downloaded libc v0.2.65
[INFO] [stderr]   Downloaded mio v0.6.19
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded syn v1.0.8
[INFO] [stderr]   Downloaded bcrypt v0.4.0
[INFO] [stderr]   Downloaded memchr v2.2.1
[INFO] [stderr]   Downloaded cc v1.0.47
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded serde v1.0.102
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d798a27726f19871e28b5cd8404f9b5aacd0ddb522b8c49b810fa6f7de6bb92
[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" "4d798a27726f19871e28b5cd8404f9b5aacd0ddb522b8c49b810fa6f7de6bb92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d798a27726f19871e28b5cd8404f9b5aacd0ddb522b8c49b810fa6f7de6bb92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d798a27726f19871e28b5cd8404f9b5aacd0ddb522b8c49b810fa6f7de6bb92", kill_on_drop: false }`
[INFO] [stdout] 4d798a27726f19871e28b5cd8404f9b5aacd0ddb522b8c49b810fa6f7de6bb92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caca8e1a3e9f07b445dd8a5b0e4fbc49e4a3236044ca8cea50e4e58eafa4db67
[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" "caca8e1a3e9f07b445dd8a5b0e4fbc49e4a3236044ca8cea50e4e58eafa4db67", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]     Checking mio v0.6.19
[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]     Checking grubbnet v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_server.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PingPacket) -> std::result::Result<Vec<_>, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&PingPacket) -> Vec<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `serialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PingPacket) -> std::result::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:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn deserialize(data: &[u8]) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `PingPacket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> std::result::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:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PongPacket) -> std::result::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:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn deserialize(_data: &[u8]) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `PongPacket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> std::result::Result<PongPacket, grubbnet::Error>`
[INFO] [stdout]               found fn pointer `fn(&[u8]) -> PongPacket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `deserialize` has an incompatible type for trait
[INFO] [stdout]   --> examples/simple_client.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn deserialize(_data: &[u8]) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `PingPacket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> std::result::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:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn serialize(&self) -> Vec<u8> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PongPacket) -> std::result::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:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn deserialize(data: &[u8]) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found struct `PongPacket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&[u8]) -> std::result::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 `std::result::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 `std::result::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" "caca8e1a3e9f07b445dd8a5b0e4fbc49e4a3236044ca8cea50e4e58eafa4db67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caca8e1a3e9f07b445dd8a5b0e4fbc49e4a3236044ca8cea50e4e58eafa4db67", kill_on_drop: false }`
[INFO] [stdout] caca8e1a3e9f07b445dd8a5b0e4fbc49e4a3236044ca8cea50e4e58eafa4db67