[INFO] crate c_string 0.7.1-obsolete is already in cache
[INFO] extracting crate c_string 0.7.1-obsolete into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/c_string/0.7.1-obsolete
[INFO] extracting crate c_string 0.7.1-obsolete into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/c_string/0.7.1-obsolete
[INFO] validating manifest of c_string-0.7.1-obsolete 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 c_string-0.7.1-obsolete 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 c_string-0.7.1-obsolete
[INFO] finished frobbing c_string-0.7.1-obsolete
[INFO] frobbed toml for c_string-0.7.1-obsolete written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/c_string/0.7.1-obsolete/Cargo.toml
[INFO] started frobbing c_string-0.7.1-obsolete
[INFO] finished frobbing c_string-0.7.1-obsolete
[INFO] frobbed toml for c_string-0.7.1-obsolete written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/c_string/0.7.1-obsolete/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 c_string-0.7.1-obsolete against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-4/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/c_string/0.7.1-obsolete:/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] a5b07c320a86a422ea2ad1a769421c07c1cd73997b407b720d76592f55746d0b
[INFO] running `"docker" "start" "-a" "a5b07c320a86a422ea2ad1a769421c07c1cd73997b407b720d76592f55746d0b"`
[INFO] [stderr]     Checking c_string v0.7.1-obsolete (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> tests/tests.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |     for i in (0 .. len) {
[INFO] [stderr]    |              ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "a5b07c320a86a422ea2ad1a769421c07c1cd73997b407b720d76592f55746d0b"`
[INFO] running `"docker" "rm" "-f" "a5b07c320a86a422ea2ad1a769421c07c1cd73997b407b720d76592f55746d0b"`
[INFO] [stdout] a5b07c320a86a422ea2ad1a769421c07c1cd73997b407b720d76592f55746d0b