[INFO] crate qtrac-retest 4.0.3 is already in cache
[INFO] extracting crate qtrac-retest 4.0.3 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/qtrac-retest/4.0.3
[INFO] extracting crate qtrac-retest 4.0.3 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/qtrac-retest/4.0.3
[INFO] validating manifest of qtrac-retest-4.0.3 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of qtrac-retest-4.0.3 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing qtrac-retest-4.0.3
[INFO] finished frobbing qtrac-retest-4.0.3
[INFO] frobbed toml for qtrac-retest-4.0.3 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/qtrac-retest/4.0.3/Cargo.toml
[INFO] started frobbing qtrac-retest-4.0.3
[INFO] finished frobbing qtrac-retest-4.0.3
[INFO] frobbed toml for qtrac-retest-4.0.3 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/qtrac-retest/4.0.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking qtrac-retest-4.0.3 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-0/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/qtrac-retest/4.0.3:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c6a2e86c92a7d5596840058a844f01181f6e16f783b940625b9d7186d360e00b
[INFO] running `"docker" "start" "-a" "c6a2e86c92a7d5596840058a844f01181f6e16f783b940625b9d7186d360e00b"`
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking qtrac-retest v4.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `error_chain_processing`, `impl_error_chain_kind`, `impl_error_chain_processed`, `impl_extract_backtrace`
[INFO] [stderr]  --> src/errors.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 |     error_chain, error_chain_processing, impl_error_chain_kind,
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 5 |     impl_error_chain_processed, impl_extract_backtrace,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error_chain_processing`, `impl_error_chain_kind`, `impl_error_chain_processed`, `impl_extract_backtrace`
[INFO] [stderr]  --> src/errors.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 |     error_chain, error_chain_processing, impl_error_chain_kind,
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 5 |     impl_error_chain_processed, impl_extract_backtrace,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.92s
[INFO] running `"docker" "inspect" "c6a2e86c92a7d5596840058a844f01181f6e16f783b940625b9d7186d360e00b"`
[INFO] running `"docker" "rm" "-f" "c6a2e86c92a7d5596840058a844f01181f6e16f783b940625b9d7186d360e00b"`
[INFO] [stdout] c6a2e86c92a7d5596840058a844f01181f6e16f783b940625b9d7186d360e00b