Dec 19 15:15:43.025 INFO checking jeremyBanks/tprime against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:15:43.025 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/jeremyBanks/tprime:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:15:43.511 INFO [stdout] 627c7de2d848fd3093974243eebf2c9e7a7bb622f5ffb8f3a2e633f56d263e8e
Dec 19 15:15:43.513 INFO running `"docker" "start" "-a" "627c7de2d848fd3093974243eebf2c9e7a7bb622f5ffb8f3a2e633f56d263e8e"`
Dec 19 15:15:45.928 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 19 15:15:46.070 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.15
Dec 19 15:15:46.072 INFO [stderr]     Checking web-sys v0.0.1
Dec 19 15:15:46.072 INFO [stderr]    Compiling proc-macro2 v0.4.9
Dec 19 15:15:46.080 INFO [stderr]    Compiling serde_json v1.0.24
Dec 19 15:15:46.080 INFO [stderr]    Compiling serdebug v1.0.5
Dec 19 15:15:46.080 INFO [stderr]     Checking thread_local v0.3.5
Dec 19 15:15:47.860 INFO [stderr]     Checking regex v1.0.2
Dec 19 15:15:48.280 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 19 15:15:48.281 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
Dec 19 15:15:48.281 INFO [stderr]     |
Dec 19 15:15:48.282 INFO [stderr] 347 |             Span::Nightly(proc_macro::Span::def_site())
Dec 19 15:15:48.282 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 15:15:48.292 INFO [stderr]     |
Dec 19 15:15:48.293 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 19 15:15:48.293 INFO [stderr] 
Dec 19 15:15:48.368 INFO [stderr] error: aborting due to previous error
Dec 19 15:15:48.368 INFO [stderr] 
Dec 19 15:15:48.369 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 19 15:15:48.395 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 19 15:15:48.395 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 15:15:52.768 INFO [stderr] error: build failed
Dec 19 15:15:53.602 INFO running `"docker" "inspect" "627c7de2d848fd3093974243eebf2c9e7a7bb622f5ffb8f3a2e633f56d263e8e"`
Dec 19 15:15:53.900 INFO running `"docker" "rm" "-f" "627c7de2d848fd3093974243eebf2c9e7a7bb622f5ffb8f3a2e633f56d263e8e"`
Dec 19 15:15:54.226 INFO [stdout] 627c7de2d848fd3093974243eebf2c9e7a7bb622f5ffb8f3a2e633f56d263e8e