[INFO] crate file-lock 1.1.20 is already in cache
[INFO] extracting crate file-lock 1.1.20 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/file-lock/1.1.20
[INFO] extracting crate file-lock 1.1.20 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/file-lock/1.1.20
[INFO] validating manifest of file-lock-1.1.20 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of file-lock-1.1.20 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing file-lock-1.1.20
[INFO] finished frobbing file-lock-1.1.20
[INFO] frobbed toml for file-lock-1.1.20 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/file-lock/1.1.20/Cargo.toml
[INFO] started frobbing file-lock-1.1.20
[INFO] finished frobbing file-lock-1.1.20
[INFO] frobbed toml for file-lock-1.1.20 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/file-lock/1.1.20/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking file-lock-1.1.20 against try#f45cc3094ee337acd688771b9234318046b0572d for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-1/try#f45cc3094ee337acd688771b9234318046b0572d:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/file-lock/1.1.20:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0b0f433db5aecdb6489fe65a5e311b5ba08bb9b3aa7e9b5c5993a9717b9be76d
[INFO] running `"docker" "start" "-a" "0b0f433db5aecdb6489fe65a5e311b5ba08bb9b3aa7e9b5c5993a9717b9be76d"`
[INFO] [stderr]    Compiling file-lock v1.1.20 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::Build': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   gcc::Build::new()
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]  --> build.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   gcc::Build::new()
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         self.unlock().is_ok();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         self.unlock().is_ok();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:183:29
[INFO] [stderr]     |
[INFO] [stderr] 183 |                             remove_file(&filename).is_ok();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:188:37
[INFO] [stderr]     |
[INFO] [stderr] 188 | /                                     OpenOptions::new()
[INFO] [stderr] 189 | |                                         .write(true)
[INFO] [stderr] 190 | |                                         .create(true)
[INFO] [stderr] 191 | |                                         .open(&filename)
[INFO] [stderr] 192 | |                                         .is_ok();
[INFO] [stderr]     | |_________________________________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:209:57
[INFO] [stderr]     |
[INFO] [stderr] 209 |                                         Some(lock) => { lock.unlock().is_ok(); },
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/lib.rs:276:29
[INFO] [stderr]     |
[INFO] [stderr] 276 |                             remove_file(&filename).is_ok();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "0b0f433db5aecdb6489fe65a5e311b5ba08bb9b3aa7e9b5c5993a9717b9be76d"`
[INFO] running `"docker" "rm" "-f" "0b0f433db5aecdb6489fe65a5e311b5ba08bb9b3aa7e9b5c5993a9717b9be76d"`
[INFO] [stdout] 0b0f433db5aecdb6489fe65a5e311b5ba08bb9b3aa7e9b5c5993a9717b9be76d