[INFO] fetching crate headers 0.3.0...
[INFO] checking headers-0.3.0 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate headers 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate headers 0.3.0 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate headers 0.3.0
[INFO] finished tweaking crates.io crate headers 0.3.0
[INFO] tweaked toml for crates.io crate headers 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] a83506bff2ca4c0d21a354654151d2b1c101c5e5647b414d691e74b713807a44
[INFO] running `"docker" "start" "-a" "a83506bff2ca4c0d21a354654151d2b1c101c5e5647b414d691e74b713807a44"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking headers v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `from_static`
[INFO] [stderr]   --> src/util/entity.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn from_static(bytes: &'static str) -> EntityTag {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tag`
[INFO] [stderr]   --> src/util/entity.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn tag(&self) -> &[u8] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_weak`
[INFO] [stderr]   --> src/util/entity.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn is_weak(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `strong_eq`
[INFO] [stderr]   --> src/util/entity.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn strong_eq(&self, other: &EntityTag) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `weak_eq`
[INFO] [stderr]   --> src/util/entity.rs:99:5
[INFO] [stderr]    |
[INFO] [stderr] 99 |     pub fn weak_eq(&self, other: &EntityTag) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `strong_ne`
[INFO] [stderr]    --> src/util/entity.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     pub fn strong_ne(&self, other: &EntityTag) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `weak_ne`
[INFO] [stderr]    --> src/util/entity.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn weak_ne(&self, other: &EntityTag) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.39s
[INFO] running `"docker" "inspect" "a83506bff2ca4c0d21a354654151d2b1c101c5e5647b414d691e74b713807a44"`
[INFO] running `"docker" "rm" "-f" "a83506bff2ca4c0d21a354654151d2b1c101c5e5647b414d691e74b713807a44"`
[INFO] [stdout] a83506bff2ca4c0d21a354654151d2b1c101c5e5647b414d691e74b713807a44