Dec 19 07:41:26.858 INFO checking syntheticsh/rust_macro_play against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 07:41:26.858 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/syntheticsh/rust_macro_play:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:41:27.458 INFO [stdout] 57656c7c3aa1cb380445765195c4182cbc00bd4794e307a9f2448443a4cb60a1
Dec 19 07:41:27.460 INFO running `"docker" "start" "-a" "57656c7c3aa1cb380445765195c4182cbc00bd4794e307a9f2448443a4cb60a1"`
Dec 19 07:41:30.180 INFO [stderr]    Compiling proc-macro2 v0.4.20
Dec 19 07:41:30.180 INFO [stderr]     Checking play_macro v0.1.0 (/opt/crater/workdir/play_macro)
Dec 19 07:41:34.186 INFO [stderr]    Compiling quote v0.6.9
Dec 19 07:41:35.286 INFO [stderr]    Compiling syn v0.15.18
Dec 19 07:41:44.320 INFO [stderr]    Compiling play_macro_derive v0.1.0 (/opt/crater/workdir/play_macro/play_macro_derive)
Dec 19 07:41:44.590 INFO [stderr] warning: the feature `extern_crate_item_prelude` has been stable since 1.31.0 and no longer requires an attribute to enable
Dec 19 07:41:44.590 INFO [stderr]  --> play_macro/play_macro_derive/src/lib.rs:1:12
Dec 19 07:41:44.590 INFO [stderr]   |
Dec 19 07:41:44.590 INFO [stderr] 1 | #![feature(extern_crate_item_prelude)]
Dec 19 07:41:44.590 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:41:44.590 INFO [stderr]   |
Dec 19 07:41:44.590 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 07:41:44.590 INFO [stderr] 
Dec 19 07:41:45.625 INFO [stderr]     Checking macro_play v0.1.0 (/opt/crater/workdir)
Dec 19 07:41:46.080 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.94s
Dec 19 07:41:47.100 INFO running `"docker" "inspect" "57656c7c3aa1cb380445765195c4182cbc00bd4794e307a9f2448443a4cb60a1"`
Dec 19 07:41:47.411 INFO running `"docker" "rm" "-f" "57656c7c3aa1cb380445765195c4182cbc00bd4794e307a9f2448443a4cb60a1"`
Dec 19 07:41:47.768 INFO [stdout] 57656c7c3aa1cb380445765195c4182cbc00bd4794e307a9f2448443a4cb60a1