Nov 04 03:03:09.989 INFO checking mattdeboard/prepend_line against try#e740b9aa0b624fa39feb39613e76d15bdf57e594 for pr-55655
Nov 04 03:03:09.991 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-3/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55655/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/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 +e740b9aa0b624fa39feb39613e76d15bdf57e594-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 03:03:10.439 INFO blam! 56441b3ca97fb81736a1234319cb276f3db459fe545acff9deeafacff00e72c2
Nov 04 03:03:10.441 INFO running `"docker" "start" "-a" "56441b3ca97fb81736a1234319cb276f3db459fe545acff9deeafacff00e72c2"`
Nov 04 03:03:12.223 INFO kablam! usermod: no changes
Nov 04 03:03:12.393 INFO kablam!    Compiling proc-macro2 v0.4.12
Nov 04 03:03:12.396 INFO kablam!    Compiling wasm-bindgen-shared v0.2.16
Nov 04 03:03:12.403 INFO kablam!    Compiling log v0.4.3
Nov 04 03:03:12.404 INFO kablam!    Compiling ryu v0.2.3
Nov 04 03:03:12.405 INFO kablam!    Compiling serde v1.0.71
Nov 04 03:03:12.407 INFO kablam!     Checking uuid v0.1.18
Nov 04 03:03:14.847 INFO kablam!     Checking mktemp v0.3.1
Nov 04 03:03:18.967 INFO kablam! error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Nov 04 03:03:18.967 INFO kablam!    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Nov 04 03:03:18.967 INFO kablam!     |
Nov 04 03:03:18.967 INFO kablam! 346 |             Span::Nightly(proc_macro::Span::def_site())
Nov 04 03:03:18.967 INFO kablam!     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 04 03:03:18.967 INFO kablam!     |
Nov 04 03:03:18.967 INFO kablam!     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Nov 04 03:03:18.967 INFO kablam! 
Nov 04 03:03:19.015 INFO kablam! error: aborting due to previous error
Nov 04 03:03:19.015 INFO kablam! 
Nov 04 03:03:19.015 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 04 03:03:19.039 INFO kablam! error: Could not compile `proc-macro2`.
Nov 04 03:03:19.039 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 04 03:03:28.011 INFO kablam! error: build failed
Nov 04 03:03:28.011 INFO kablam! su: No module specific data is present
Nov 04 03:03:29.124 INFO running `"docker" "rm" "-f" "56441b3ca97fb81736a1234319cb276f3db459fe545acff9deeafacff00e72c2"`
Nov 04 03:03:29.411 INFO blam! 56441b3ca97fb81736a1234319cb276f3db459fe545acff9deeafacff00e72c2