[INFO] crate driverkit 0.2.0 is already in cache
[INFO] extracting crate driverkit 0.2.0 into work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/driverkit/0.2.0
[INFO] extracting crate driverkit 0.2.0 into work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/reg/driverkit/0.2.0
[INFO] validating manifest of driverkit-0.2.0 on toolchain master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of driverkit-0.2.0 on toolchain try#097e26225c5cc28d3042ad4c80eac7c488f78ee7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing driverkit-0.2.0
[INFO] finished frobbing driverkit-0.2.0
[INFO] frobbed toml for driverkit-0.2.0 written to work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/driverkit/0.2.0/Cargo.toml
[INFO] started frobbing driverkit-0.2.0
[INFO] finished frobbing driverkit-0.2.0
[INFO] frobbed toml for driverkit-0.2.0 written to work/ex/pr-60932/sources/try#097e26225c5cc28d3042ad4c80eac7c488f78ee7/reg/driverkit/0.2.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+097e26225c5cc28d3042ad4c80eac7c488f78ee7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking driverkit-0.2.0 against master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4 for pr-60932
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60932/worker-4/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60932/sources/master#548add7f61bfcbe3bea3f5ccefb53c84da8fefe4/reg/driverkit/0.2.0:/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" "+548add7f61bfcbe3bea3f5ccefb53c84da8fefe4-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2fcf4644e50b98b0a1252339956ec70b2a0a4c767bc5b80a3bf0e2bc4c25661c
[INFO] running `"docker" "start" "-a" "2fcf4644e50b98b0a1252339956ec70b2a0a4c767bc5b80a3bf0e2bc4c25661c"`
[INFO] [stderr]    Compiling x86 v0.11.0
[INFO] [stderr]     Checking driverkit v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/linux/mem.rs:124:16
[INFO] [stderr]     |
[INFO] [stderr] 124 |             Ok(f) => (),
[INFO] [stderr]     |                ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.31s
[INFO] running `"docker" "inspect" "2fcf4644e50b98b0a1252339956ec70b2a0a4c767bc5b80a3bf0e2bc4c25661c"`
[INFO] running `"docker" "rm" "-f" "2fcf4644e50b98b0a1252339956ec70b2a0a4c767bc5b80a3bf0e2bc4c25661c"`
[INFO] [stdout] 2fcf4644e50b98b0a1252339956ec70b2a0a4c767bc5b80a3bf0e2bc4c25661c