[INFO] fetching crate ixlist 0.1.0...
[INFO] checking ixlist-0.1.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate ixlist 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ixlist 0.1.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ixlist 0.1.0
[INFO] finished tweaking crates.io crate ixlist 0.1.0
[INFO] tweaked toml for crates.io crate ixlist 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2db3150c070fba0f3e65d5423cdf7e58af276047ddf937c214b8354fab108b24
[INFO] running `"docker" "start" "-a" "2db3150c070fba0f3e65d5423cdf7e58af276047ddf937c214b8354fab108b24"`
[INFO] [stderr]     Checking ixlist v0.1.0 (/opt/rustwide/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 1.65s
[INFO] running `"docker" "inspect" "2db3150c070fba0f3e65d5423cdf7e58af276047ddf937c214b8354fab108b24"`
[INFO] running `"docker" "rm" "-f" "2db3150c070fba0f3e65d5423cdf7e58af276047ddf937c214b8354fab108b24"`
[INFO] [stdout] 2db3150c070fba0f3e65d5423cdf7e58af276047ddf937c214b8354fab108b24