[INFO] fetching crate minecraft-protocol 0.1.0...
[INFO] checking minecraft-protocol-0.1.0 against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] extracting crate minecraft-protocol 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate minecraft-protocol 0.1.0 on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minecraft-protocol 0.1.0
[INFO] finished tweaking crates.io crate minecraft-protocol 0.1.0
[INFO] tweaked toml for crates.io crate minecraft-protocol 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 63225d24499c2c1fe2f1da4e1e90c21f4428dc032a21af01635a0444a9abae28
[INFO] running `Command { std: "docker" "start" "-a" "63225d24499c2c1fe2f1da4e1e90c21f4428dc032a21af01635a0444a9abae28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63225d24499c2c1fe2f1da4e1e90c21f4428dc032a21af01635a0444a9abae28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63225d24499c2c1fe2f1da4e1e90c21f4428dc032a21af01635a0444a9abae28", kill_on_drop: false }`
[INFO] [stdout] 63225d24499c2c1fe2f1da4e1e90c21f4428dc032a21af01635a0444a9abae28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 449332345fbeb15e6de4ed6c27844e3ed3bbcbdfd8bcb42a7579763a29e8e63d
[INFO] running `Command { std: "docker" "start" "-a" "449332345fbeb15e6de4ed6c27844e3ed3bbcbdfd8bcb42a7579763a29e8e63d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking named-binary-tag v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling minecraft-protocol-derive v0.0.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking minecraft-protocol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/lib.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Cursor, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]    --> src/lib.rs:569:12
[INFO] [stdout]     |
[INFO] [stdout] 569 |     pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/lib.rs:575:12
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]    --> src/lib.rs:569:12
[INFO] [stdout]     |
[INFO] [stdout] 569 |     pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/lib.rs:575:12
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.27s
[INFO] running `Command { std: "docker" "inspect" "449332345fbeb15e6de4ed6c27844e3ed3bbcbdfd8bcb42a7579763a29e8e63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449332345fbeb15e6de4ed6c27844e3ed3bbcbdfd8bcb42a7579763a29e8e63d", kill_on_drop: false }`
[INFO] [stdout] 449332345fbeb15e6de4ed6c27844e3ed3bbcbdfd8bcb42a7579763a29e8e63d