Nov 04 03:03:12.864 INFO checking mattdeboard/prepend_line against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 03:03:12.866 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-0/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2ad8c7b3502616aff142a4640cce911c6c2c5463-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 04 03:03:13.369 INFO blam! d745f95dd87d2fe0a833b133b77a01564970716e3554535f43892e2ed6085f52
Nov 04 03:03:13.371 INFO running `"docker" "start" "-a" "d745f95dd87d2fe0a833b133b77a01564970716e3554535f43892e2ed6085f52"`
Nov 04 03:03:15.163 INFO kablam! usermod: no changes
Nov 04 03:03:15.381 INFO kablam!    Compiling proc-macro2 v0.4.12
Nov 04 03:03:15.382 INFO kablam!    Compiling ryu v0.2.3
Nov 04 03:03:15.395 INFO kablam!    Compiling wasm-bindgen-shared v0.2.16
Nov 04 03:03:15.415 INFO kablam!    Compiling log v0.4.3
Nov 04 03:03:15.416 INFO kablam!    Compiling serde v1.0.71
Nov 04 03:03:15.416 INFO kablam!     Checking rand v0.3.22
Nov 04 03:03:16.867 INFO kablam!     Checking uuid v0.1.18
Nov 04 03:03:20.217 INFO kablam!     Checking mktemp v0.3.1
Nov 04 03:03:22.091 INFO kablam! error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 04 03:03:22.095 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 04 03:03:22.095 INFO kablam!     |
Nov 04 03:03:22.095 INFO kablam! 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 04 03:03:22.095 INFO kablam!     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 03:03:22.095 INFO kablam!     |
Nov 04 03:03:22.095 INFO kablam!     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 04 03:03:22.095 INFO kablam! 
Nov 04 03:03:22.106 INFO kablam! error: aborting due to previous error
Nov 04 03:03:22.106 INFO kablam! 
Nov 04 03:03:22.106 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 04 03:03:22.132 INFO kablam! error: Could not compile `proc-macro2`.
Nov 04 03:03:22.133 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 04 03:03:32.411 INFO kablam! error: build failed
Nov 04 03:03:32.463 INFO kablam! su: No module specific data is present
Nov 04 03:03:33.197 INFO running `"docker" "rm" "-f" "d745f95dd87d2fe0a833b133b77a01564970716e3554535f43892e2ed6085f52"`
Nov 04 03:03:33.479 INFO blam! d745f95dd87d2fe0a833b133b77a01564970716e3554535f43892e2ed6085f52