[INFO] crate driverkit 0.2.0 is already in cache
[INFO] extracting crate driverkit 0.2.0 into work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/driverkit/0.2.0
[INFO] extracting crate driverkit 0.2.0 into work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/driverkit/0.2.0
[INFO] validating manifest of driverkit-0.2.0 on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of driverkit-0.2.0 on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-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-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/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-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/driverkit/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking driverkit-0.2.0 against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-7/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/driverkit/0.2.0:/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a8b63f6ddb2d37546fa154702114c50cf68a0366c66f5d02693ddae7321c3b9a
[INFO] running `"docker" "start" "-a" "a8b63f6ddb2d37546fa154702114c50cf68a0366c66f5d02693ddae7321c3b9a"`
[INFO] [stderr]    Compiling x86 v0.11.0
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking mmap v0.1.1
[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 using `_f` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `"docker" "inspect" "a8b63f6ddb2d37546fa154702114c50cf68a0366c66f5d02693ddae7321c3b9a"`
[INFO] running `"docker" "rm" "-f" "a8b63f6ddb2d37546fa154702114c50cf68a0366c66f5d02693ddae7321c3b9a"`
[INFO] [stdout] a8b63f6ddb2d37546fa154702114c50cf68a0366c66f5d02693ddae7321c3b9a