[INFO] updating cached repository ashfordneil/looker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ashfordneil/looker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ashfordneil/looker" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ashfordneil/looker"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ashfordneil/looker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ashfordneil/looker" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ashfordneil/looker"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ashfordneil/looker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0227cdebe3afbcfc1fe695f2e773e2ab0bac07fe
[INFO] sha for GitHub repo ashfordneil/looker: 0227cdebe3afbcfc1fe695f2e773e2ab0bac07fe
[INFO] validating manifest of ashfordneil/looker on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ashfordneil/looker on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ashfordneil/looker
[INFO] finished frobbing ashfordneil/looker
[INFO] frobbed toml for ashfordneil/looker written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ashfordneil/looker/Cargo.toml
[INFO] started frobbing ashfordneil/looker
[INFO] finished frobbing ashfordneil/looker
[INFO] frobbed toml for ashfordneil/looker written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/ashfordneil/looker/Cargo.toml
[INFO] crate ashfordneil/looker already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ashfordneil/looker against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-4/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/ashfordneil/looker:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 22b3b8d5a509995f135c4ed38f45f8e9de2b0fd4e766268ea65a245a8a69afb4
[INFO] running `"docker" "start" "-a" "22b3b8d5a509995f135c4ed38f45f8e9de2b0fd4e766268ea65a245a8a69afb4"`
[INFO] [stderr]     Checking census v0.2.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking fst v0.3.3
[INFO] [stderr]     Checking murmurhash32 v0.2.0
[INFO] [stderr]     Checking snap v0.2.5
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking bitpacking v0.6.0
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking fail v0.2.1
[INFO] [stderr]     Checking atomicwrites v0.2.2
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking globset v0.4.2
[INFO] [stderr]     Checking levenshtein_automata v0.1.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tantivy-fst v0.1.0
[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr]     Checking ignore v0.4.6
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling rental-impl v0.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr] error: Could not compile `bitpacking`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name bitpacking /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/bitpacking-0.6.0/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata -C debuginfo=2 -C metadata=1ee04c7f905434ef -C extra-filename=-1ee04c7f905434ef --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern crunchy=/opt/crater/target/debug/deps/libcrunchy-a5cc8b12ccdc26e1.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `rental-impl`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rental_impl /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rental-impl-0.5.2/src/lib.rs --color never --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C debuginfo=2 -C metadata=d702ebd57bb5a60b -C extra-filename=-d702ebd57bb5a60b --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern proc_macro2=/opt/crater/target/debug/deps/libproc_macro2-cc9073ade9a27f39.rlib --extern quote=/opt/crater/target/debug/deps/libquote-9a7a3337db4d3443.rlib --extern syn=/opt/crater/target/debug/deps/libsyn-3897882c4ae86cee.rlib --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "22b3b8d5a509995f135c4ed38f45f8e9de2b0fd4e766268ea65a245a8a69afb4"`
[INFO] running `"docker" "rm" "-f" "22b3b8d5a509995f135c4ed38f45f8e9de2b0fd4e766268ea65a245a8a69afb4"`
[INFO] [stdout] 22b3b8d5a509995f135c4ed38f45f8e9de2b0fd4e766268ea65a245a8a69afb4