Dec 18 15:36:50.552 INFO checking google-tpu1_alpha1-1.0.8+20181010 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 15:36:50.552 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/google-tpu1_alpha1/1.0.8+20181010:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 15:36:51.026 INFO [stdout] 300b9f2b2614e87af6a1c58ec40a43837838dbe0e14f5a7446b4a577dd2f2453
Dec 18 15:36:51.028 INFO running `"docker" "start" "-a" "300b9f2b2614e87af6a1c58ec40a43837838dbe0e14f5a7446b4a577dd2f2453"`
Dec 18 15:36:52.905 INFO [stderr]     Checking google-tpu1_alpha1 v1.0.8+20181010 (/opt/crater/workdir)
Dec 18 15:36:55.848 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 15:36:55.848 INFO [stderr]    --> src/cmn.rs:344:46
Dec 18 15:36:55.848 INFO [stderr]     |
Dec 18 15:36:55.848 INFO [stderr] 344 |             Error::HttpError(ref err) => err.cause(),
Dec 18 15:36:55.848 INFO [stderr]     |                                              ^^^^^
Dec 18 15:36:55.848 INFO [stderr]     |
Dec 18 15:36:55.848 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 18 15:36:55.848 INFO [stderr] 
Dec 18 15:36:55.848 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 15:36:55.848 INFO [stderr]    --> src/cmn.rs:345:55
Dec 18 15:36:55.848 INFO [stderr]     |
Dec 18 15:36:55.848 INFO [stderr] 345 |             Error::JsonDecodeError(_, ref err) => err.cause(),
Dec 18 15:36:55.848 INFO [stderr]     |                                                       ^^^^^
Dec 18 15:36:55.848 INFO [stderr] 
Dec 18 15:36:56.017 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 15:36:56.017 INFO [stderr]    --> src/cmn.rs:344:46
Dec 18 15:36:56.017 INFO [stderr]     |
Dec 18 15:36:56.017 INFO [stderr] 344 |             Error::HttpError(ref err) => err.cause(),
Dec 18 15:36:56.017 INFO [stderr]     |                                              ^^^^^
Dec 18 15:36:56.017 INFO [stderr]     |
Dec 18 15:36:56.017 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 18 15:36:56.017 INFO [stderr] 
Dec 18 15:36:56.017 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 15:36:56.017 INFO [stderr]    --> src/cmn.rs:345:55
Dec 18 15:36:56.017 INFO [stderr]     |
Dec 18 15:36:56.017 INFO [stderr] 345 |             Error::JsonDecodeError(_, ref err) => err.cause(),
Dec 18 15:36:56.017 INFO [stderr]     |                                                       ^^^^^
Dec 18 15:36:56.017 INFO [stderr] 
Dec 18 15:36:56.824 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.05s
Dec 18 15:36:57.238 INFO running `"docker" "inspect" "300b9f2b2614e87af6a1c58ec40a43837838dbe0e14f5a7446b4a577dd2f2453"`
Dec 18 15:36:57.427 INFO running `"docker" "rm" "-f" "300b9f2b2614e87af6a1c58ec40a43837838dbe0e14f5a7446b4a577dd2f2453"`
Dec 18 15:36:57.571 INFO [stdout] 300b9f2b2614e87af6a1c58ec40a43837838dbe0e14f5a7446b4a577dd2f2453