[INFO] crate headers-ext 0.0.4 is already in cache
[INFO] extracting crate headers-ext 0.0.4 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/headers-ext/0.0.4
[INFO] extracting crate headers-ext 0.0.4 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/headers-ext/0.0.4
[INFO] validating manifest of headers-ext-0.0.4 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of headers-ext-0.0.4 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing headers-ext-0.0.4
[INFO] finished frobbing headers-ext-0.0.4
[INFO] frobbed toml for headers-ext-0.0.4 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/headers-ext/0.0.4/Cargo.toml
[INFO] started frobbing headers-ext-0.0.4
[INFO] finished frobbing headers-ext-0.0.4
[INFO] frobbed toml for headers-ext-0.0.4 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/headers-ext/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking headers-ext-0.0.4 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-2/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/headers-ext/0.0.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e087252372891616e4f07fb8eae0faeae51d2ec696c8c193dec68c3b017725f9
[INFO] running `"docker" "start" "-a" "e087252372891616e4f07fb8eae0faeae51d2ec696c8c193dec68c3b017725f9"`
[INFO] [stderr]    Compiling headers-derive v0.0.2
[INFO] [stderr]     Checking headers-core v0.0.2
[INFO] [stderr]     Checking headers-ext v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `from_static`
[INFO] [stderr]   --> src/util/entity.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     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:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn tag(&self) -> &[u8] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_weak`
[INFO] [stderr]   --> src/util/entity.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     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:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     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:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 |     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:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     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:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn weak_ne(&self, other: &EntityTag) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `"docker" "inspect" "e087252372891616e4f07fb8eae0faeae51d2ec696c8c193dec68c3b017725f9"`
[INFO] running `"docker" "rm" "-f" "e087252372891616e4f07fb8eae0faeae51d2ec696c8c193dec68c3b017725f9"`
[INFO] [stdout] e087252372891616e4f07fb8eae0faeae51d2ec696c8c193dec68c3b017725f9