[INFO] crate nested_intervals 0.1.8 is already in cache
[INFO] extracting crate nested_intervals 0.1.8 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nested_intervals/0.1.8
[INFO] extracting crate nested_intervals 0.1.8 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/nested_intervals/0.1.8
[INFO] validating manifest of nested_intervals-0.1.8 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 nested_intervals-0.1.8 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 nested_intervals-0.1.8
[INFO] finished frobbing nested_intervals-0.1.8
[INFO] frobbed toml for nested_intervals-0.1.8 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nested_intervals/0.1.8/Cargo.toml
[INFO] started frobbing nested_intervals-0.1.8
[INFO] finished frobbing nested_intervals-0.1.8
[INFO] frobbed toml for nested_intervals-0.1.8 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/nested_intervals/0.1.8/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 nested_intervals-0.1.8 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-6/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/nested_intervals/0.1.8:/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 254710a4b13dd2b8d5bb13dbf4ce389aad7c1c7b4d1f857e88a81f28b52df98d
[INFO] running `"docker" "start" "-a" "254710a4b13dd2b8d5bb13dbf4ce389aad7c1c7b4d1f857e88a81f28b52df98d"`
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking nested_intervals v0.1.8 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/lib.rs:1535:13
[INFO] [stderr]      |
[INFO] [stderr] 1535 |         let mut n = IntervalSet::new_with_ids(&intervals, &ids).merge_split();
[INFO] [stderr]      |             ----^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `"docker" "inspect" "254710a4b13dd2b8d5bb13dbf4ce389aad7c1c7b4d1f857e88a81f28b52df98d"`
[INFO] running `"docker" "rm" "-f" "254710a4b13dd2b8d5bb13dbf4ce389aad7c1c7b4d1f857e88a81f28b52df98d"`
[INFO] [stdout] 254710a4b13dd2b8d5bb13dbf4ce389aad7c1c7b4d1f857e88a81f28b52df98d