[INFO] crate quinn-proto 0.5.2 is already in cache
[INFO] checking quinn-proto-0.5.2 against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] extracting crate quinn-proto 0.5.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate quinn-proto 0.5.2 on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate quinn-proto 0.5.2
[INFO] finished tweaking crates.io crate quinn-proto 0.5.2
[INFO] tweaked toml for crates.io crate quinn-proto 0.5.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8cef545b5fe8b356cdc748900f8f867d8fa593e6f6736008b3ccbadaf0d88767
[INFO] running `"docker" "start" "-a" "8cef545b5fe8b356cdc748900f8f867d8fa593e6f6736008b3ccbadaf0d88767"`
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.6
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]    Compiling err-derive v0.2.2
[INFO] [stderr]    Compiling hex-literal-impl v0.2.1
[INFO] [stderr]     Checking yasna v0.3.1
[INFO] [stderr]     Checking pem v0.6.1
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking rcgen v0.7.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.1.6
[INFO] [stderr]     Checking tracing v0.1.12
[INFO] [stderr]     Checking quinn-proto v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `bytes::bytes_mut::BytesMut::split_off` that must be used
[INFO] [stderr]    --> src/crypto/ring.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |         payload.split_off(payload_len - cipher.tag_len());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: consider BytesMut::truncate if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `bytes::bytes_mut::BytesMut::split_off` that must be used
[INFO] [stderr]    --> src/crypto/ring.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |         payload.split_off(payload_len - cipher.tag_len());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: consider BytesMut::truncate if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.63s
[INFO] running `"docker" "inspect" "8cef545b5fe8b356cdc748900f8f867d8fa593e6f6736008b3ccbadaf0d88767"`
[INFO] running `"docker" "rm" "-f" "8cef545b5fe8b356cdc748900f8f867d8fa593e6f6736008b3ccbadaf0d88767"`
[INFO] [stdout] 8cef545b5fe8b356cdc748900f8f867d8fa593e6f6736008b3ccbadaf0d88767