[INFO] crate rson_rs 0.2.1 is already in cache
[INFO] extracting crate rson_rs 0.2.1 into work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/rson_rs/0.2.1
[INFO] extracting crate rson_rs 0.2.1 into work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/reg/rson_rs/0.2.1
[INFO] validating manifest of rson_rs-0.2.1 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rson_rs-0.2.1 on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rson_rs-0.2.1
[INFO] finished frobbing rson_rs-0.2.1
[INFO] frobbed toml for rson_rs-0.2.1 written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/rson_rs/0.2.1/Cargo.toml
[INFO] started frobbing rson_rs-0.2.1
[INFO] finished frobbing rson_rs-0.2.1
[INFO] frobbed toml for rson_rs-0.2.1 written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/reg/rson_rs/0.2.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rson_rs-0.2.1 against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-3/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/rson_rs/0.2.1:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0fb40431fbee23caa9aca5990c593232afbc9e4b1ebff18321816bc52a838c42
[INFO] running `"docker" "start" "-a" "0fb40431fbee23caa9aca5990c593232afbc9e4b1ebff18321816bc52a838c42"`
[INFO] [stderr]     Checking rson_rs v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/de/tests.rs:76:19
[INFO] [stderr]    |
[INFO] [stderr] 76 |     assert_eq!(Ok(([2, 3, 4i32].to_vec())), from_str("[2,3,4,]"));
[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 3.62s
[INFO] running `"docker" "inspect" "0fb40431fbee23caa9aca5990c593232afbc9e4b1ebff18321816bc52a838c42"`
[INFO] running `"docker" "rm" "-f" "0fb40431fbee23caa9aca5990c593232afbc9e4b1ebff18321816bc52a838c42"`
[INFO] [stdout] 0fb40431fbee23caa9aca5990c593232afbc9e4b1ebff18321816bc52a838c42