[INFO] crate ixlist 0.1.0 is already in cache
[INFO] extracting crate ixlist 0.1.0 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/ixlist/0.1.0
[INFO] extracting crate ixlist 0.1.0 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/ixlist/0.1.0
[INFO] validating manifest of ixlist-0.1.0 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ixlist-0.1.0 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ixlist-0.1.0
[INFO] finished frobbing ixlist-0.1.0
[INFO] frobbed toml for ixlist-0.1.0 written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/ixlist/0.1.0/Cargo.toml
[INFO] started frobbing ixlist-0.1.0
[INFO] finished frobbing ixlist-0.1.0
[INFO] frobbed toml for ixlist-0.1.0 written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/ixlist/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ixlist-0.1.0 against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-7/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/ixlist/0.1.0:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 37be7919be2d46a98cee83e196eff505680ccdcf1ffd594a329f376eb734e11a
[INFO] running `"docker" "start" "-a" "37be7919be2d46a98cee83e196eff505680ccdcf1ffd594a329f376eb734e11a"`
[INFO] [stderr]     Checking ixlist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> benches/bench1.rs:26:18
[INFO] [stderr]    |
[INFO] [stderr] 26 |         for _ in (0..n) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> benches/bench1.rs:38:18
[INFO] [stderr]    |
[INFO] [stderr] 38 |         for _ in (0..n) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> benches/bench1.rs:66:18
[INFO] [stderr]    |
[INFO] [stderr] 66 |         for _ in (0..n) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> benches/bench1.rs:78:18
[INFO] [stderr]    |
[INFO] [stderr] 78 |         for _ in (0..n) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> benches/bench1.rs:90:14
[INFO] [stderr]    |
[INFO] [stderr] 90 |     for _ in (0..n) {
[INFO] [stderr]    |              ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> benches/bench1.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |     for _ in (0..n) {
[INFO] [stderr]     |              ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> benches/bench1.rs:131:14
[INFO] [stderr]     |
[INFO] [stderr] 131 |     for _ in (0..n) {
[INFO] [stderr]     |              ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `"docker" "inspect" "37be7919be2d46a98cee83e196eff505680ccdcf1ffd594a329f376eb734e11a"`
[INFO] running `"docker" "rm" "-f" "37be7919be2d46a98cee83e196eff505680ccdcf1ffd594a329f376eb734e11a"`
[INFO] [stdout] 37be7919be2d46a98cee83e196eff505680ccdcf1ffd594a329f376eb734e11a