[INFO] crate core_extensions 0.1.7 is already in cache
[INFO] extracting crate core_extensions 0.1.7 into work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/core_extensions/0.1.7
[INFO] extracting crate core_extensions 0.1.7 into work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/core_extensions/0.1.7
[INFO] validating manifest of core_extensions-0.1.7 on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of core_extensions-0.1.7 on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing core_extensions-0.1.7
[INFO] finished frobbing core_extensions-0.1.7
[INFO] frobbed toml for core_extensions-0.1.7 written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/core_extensions/0.1.7/Cargo.toml
[INFO] started frobbing core_extensions-0.1.7
[INFO] finished frobbing core_extensions-0.1.7
[INFO] frobbed toml for core_extensions-0.1.7 written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/core_extensions/0.1.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking core_extensions-0.1.7 against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-6/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/core_extensions/0.1.7:/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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cad9654471789ad4496cf665db257774dcf98da84fc4bb1c80d0152edb39b062
[INFO] running `"docker" "start" "-a" "cad9654471789ad4496cf665db257774dcf98da84fc4bb1c80d0152edb39b062"`
[INFO] [stderr]    Compiling core_extensions v0.1.7 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `super::ValSliceExt`
[INFO] [stderr]  --> src_core_extensions/slices/slice_split_while.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::ValSliceExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std_::borrow::Borrow`
[INFO] [stderr]    --> src_core_extensions/slices/slice_split_while.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |     use std_::borrow::Borrow;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std_::cmp::min`
[INFO] [stderr]    --> src_core_extensions/slices/slice_split_while.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |     use std_::cmp::min;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.16s
[INFO] running `"docker" "inspect" "cad9654471789ad4496cf665db257774dcf98da84fc4bb1c80d0152edb39b062"`
[INFO] running `"docker" "rm" "-f" "cad9654471789ad4496cf665db257774dcf98da84fc4bb1c80d0152edb39b062"`
[INFO] [stdout] cad9654471789ad4496cf665db257774dcf98da84fc4bb1c80d0152edb39b062