[INFO] crate strong-xml-derive 0.6.0-alpha is already in cache
[INFO] checking strong-xml-derive-0.6.0-alpha against master#7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3 for pr-71873
[INFO] extracting crate strong-xml-derive 0.6.0-alpha into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate strong-xml-derive 0.6.0-alpha on toolchain 7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate strong-xml-derive 0.6.0-alpha
[INFO] finished tweaking crates.io crate strong-xml-derive 0.6.0-alpha
[INFO] tweaked toml for crates.io crate strong-xml-derive 0.6.0-alpha written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "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] 10e9e859a6b415d8158fd0994cd308ab08c529f8a9757b54d86c1a9c8638bf39
[INFO] running `"docker" "start" "-a" "10e9e859a6b415d8158fd0994cd308ab08c529f8a9757b54d86c1a9c8638bf39"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]     Checking quote v1.0.6
[INFO] [stderr]     Checking strong-xml-derive v0.6.0-alpha (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Newtype`
[INFO] [stderr]   --> src/types.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 | /     Newtype {
[INFO] [stderr] 49 | |         tags: Vec<LitStr>,
[INFO] [stderr] 50 | |         name: Ident,
[INFO] [stderr] 51 | |         ty: Type,
[INFO] [stderr] 52 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Newtype`
[INFO] [stderr]   --> src/types.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 | /     Newtype {
[INFO] [stderr] 49 | |         tags: Vec<LitStr>,
[INFO] [stderr] 50 | |         name: Ident,
[INFO] [stderr] 51 | |         ty: Type,
[INFO] [stderr] 52 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `"docker" "inspect" "10e9e859a6b415d8158fd0994cd308ab08c529f8a9757b54d86c1a9c8638bf39"`
[INFO] running `"docker" "rm" "-f" "10e9e859a6b415d8158fd0994cd308ab08c529f8a9757b54d86c1a9c8638bf39"`
[INFO] [stdout] 10e9e859a6b415d8158fd0994cd308ab08c529f8a9757b54d86c1a9c8638bf39