[INFO] crate mk20d7 0.1.1 is already in cache
[INFO] extracting crate mk20d7 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/mk20d7/0.1.1
[INFO] extracting crate mk20d7 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mk20d7/0.1.1
[INFO] validating manifest of mk20d7-0.1.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mk20d7-0.1.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mk20d7-0.1.1
[INFO] finished frobbing mk20d7-0.1.1
[INFO] frobbed toml for mk20d7-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mk20d7/0.1.1/Cargo.toml
[INFO] started frobbing mk20d7-0.1.1
[INFO] finished frobbing mk20d7-0.1.1
[INFO] frobbed toml for mk20d7-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mk20d7/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mk20d7-0.1.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mk20d7/0.1.1:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a5120071f9987f242825fef3c10482e73ff3b9673880819eb5d34f63b91afcd2
[INFO] running `"docker" "start" "-a" "a5120071f9987f242825fef3c10482e73ff3b9673880819eb5d34f63b91afcd2"`
[INFO] [stderr]    Compiling mk20d7 v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `private_no_mangle_statics` has been removed: `no longer a warning, #[no_mangle] statics always exported`
[INFO] [stderr]     --> src/lib.rs:1709:9
[INFO] [stderr]      |
[INFO] [stderr] 1709 | #[allow(private_no_mangle_statics)]
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]     --> src/lib.rs:3:9
[INFO] [stderr]      |
[INFO] [stderr] 3    | #![deny(warnings)]
[INFO] [stderr]      |         ^^^^^^^^
[INFO] [stderr]      = note: #[warn(renamed_and_removed_lints)] implied by #[warn(warnings)]
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mk20d7`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mk20d7 src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=b6e1ee7441cb6be4 -C extra-filename=-b6e1ee7441cb6be4 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern bare_metal=/opt/crater/target/debug/deps/libbare_metal-94625642119ee3de.rlib --extern cortex_m=/opt/crater/target/debug/deps/libcortex_m-344db04585196d1b.rlib --extern vcell=/opt/crater/target/debug/deps/libvcell-eddfdd4800b7b5ad.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "a5120071f9987f242825fef3c10482e73ff3b9673880819eb5d34f63b91afcd2"`
[INFO] running `"docker" "rm" "-f" "a5120071f9987f242825fef3c10482e73ff3b9673880819eb5d34f63b91afcd2"`
[INFO] [stdout] a5120071f9987f242825fef3c10482e73ff3b9673880819eb5d34f63b91afcd2