[INFO] fetching crate ff-find 0.24.7...
[INFO] extracting crate ff-find 0.24.7 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ff-find/0.24.7
[INFO] extracting crate ff-find 0.24.7 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ff-find/0.24.7
[INFO] validating manifest of ff-find-0.24.7 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ff-find-0.24.7 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ff-find-0.24.7
[INFO] finished frobbing ff-find-0.24.7
[INFO] frobbed toml for ff-find-0.24.7 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/ff-find/0.24.7/Cargo.toml
[INFO] started frobbing ff-find-0.24.7
[INFO] finished frobbing ff-find-0.24.7
[INFO] frobbed toml for ff-find-0.24.7 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ff-find/0.24.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking ff-find-0.24.7 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-6/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/ff-find/0.24.7:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9e54691ab2a00cddaa2af818156720030d00249470b62297732fbe157fbfc731
[INFO] running `"docker" "start" "-a" "9e54691ab2a00cddaa2af818156720030d00249470b62297732fbe157fbfc731"`
[INFO] [stderr]     Checking globset v0.4.3
[INFO] [stderr]    Compiling ff-find v0.24.7 (/opt/crater/workdir)
[INFO] [stderr]     Checking ignore v0.4.7
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/walk.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |             let mut counter = Counter::new(MAX_CNT / threads, Some(quitting));
[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] error: Could not compile `ff-find`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name ff src/main.rs --color never --emit=dep-info,metadata -C debuginfo=2 --test -C metadata=b9384c16366e7cfe -C extra-filename=-b9384c16366e7cfe --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern aho_corasick=/opt/crater/target/debug/deps/libaho_corasick-df78dc216cf8c9ed.rmeta --extern ansi_term=/opt/crater/target/debug/deps/libansi_term-00b90b7dc24c3749.rmeta --extern atty=/opt/crater/target/debug/deps/libatty-a6808892f853968d.rmeta --extern clap=/opt/crater/target/debug/deps/libclap-4f421d695f956c34.rmeta --extern diff=/opt/crater/target/debug/deps/libdiff-6d341f57671332a7.rmeta --extern globset=/opt/crater/target/debug/deps/libglobset-5134055b8e51fe94.rmeta --extern fnv=/opt/crater/target/debug/deps/libfnv-b519cb2a26b48629.rmeta --extern glob=/opt/crater/target/debug/deps/libglob-f227b2af8d4094e7.rmeta --extern ignore=/opt/crater/target/debug/deps/libignore-a4f284675025422e.rmeta --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1807987e7fbade07.rmeta --extern log=/opt/crater/target/debug/deps/liblog-79ddc6f18204015c.rmeta --extern memchr=/opt/crater/target/debug/deps/libmemchr-28cb2103f6a044d2.rmeta --extern nix=/opt/crater/target/debug/deps/libnix-e3c06e5c1ba8b504.rmeta --extern num_cpus=/opt/crater/target/debug/deps/libnum_cpus-d9ec7c09b78ee6d4.rmeta --extern regex=/opt/crater/target/debug/deps/libregex-d29cb64ae56c9581.rmeta --extern same_file=/opt/crater/target/debug/deps/libsame_file-b4a04f274549f18a.rmeta --extern signal_hook=/opt/crater/target/debug/deps/libsignal_hook-afa9044cd0ecba9a.rmeta --extern tempdir=/opt/crater/target/debug/deps/libtempdir-fc9d97270fea6038.rmeta --extern tempfile=/opt/crater/target/debug/deps/libtempfile-d34e34b7e7f4ad5c.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "9e54691ab2a00cddaa2af818156720030d00249470b62297732fbe157fbfc731"`
[INFO] running `"docker" "rm" "-f" "9e54691ab2a00cddaa2af818156720030d00249470b62297732fbe157fbfc731"`
[INFO] [stdout] 9e54691ab2a00cddaa2af818156720030d00249470b62297732fbe157fbfc731